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Queensland Stock Status Assessment Workshop 2014 5-6 June, 2014 Queensland information for Status of key Australian fish stocks report 2014
Queensland Stock Status Assessment Workshop 2014
5-6 June, 2014
Queensland information for Status of key Australian fish stocks report 2014
Department of Agriculture, Fisheries and Forestry 2014, Queensland Stock Status Assessment Workshop 2014, Brisbane, Queensland Department of Agriculture, Fisheries and Forestry.
This publication has been compiled by staff from Fisheries Queensland, Department of Agriculture, Fisheries and Forestry.
© State of Queensland, 2014.
The Queensland Government supports and encourages the dissemination and exchange of its information. The copyright in this publication is licensed under a Creative Commons Attribution 3.0 Australia (CC BY) licence.
Under this licence you are free, without having to seek our permission, to use this publication in accordance with the licence terms.
You must keep intact the copyright notice and attribute the State of Queensland as the source of the publication.
For more information on this licence, visit http://creativecommons.org/licenses/by/3.0/au/deed.en
The information contained herein is subject to change without notice. The Queensland Government shall not be liable for technical or other errors or omissions contained herein. The reader/user accepts all risks and responsibility for losses, damages, costs and other consequences resulting directly or indirectly from using this information.
Queensland Stock Status Assessment Workshop 2014 3
Queensland Stock Status Assessment Workshop 2014
The Queensland Department of Agriculture Fisheries and Forestry (DAFF) held a workshop in June 2014 to help determine the stock status of 29 nationally important fishery species that occur in Queensland. The status of these stocks is reported in the Status of key Australian fish stocks report 2014 (fish.gov.au). This document provides summaries of the Queensland-specific information considered in the workshop1. DAFF has assessed the status of Queensland’s key fish stocks every year since 2010. These assessments follow a weight-of-evidence approach, whereby an expert panel reaches consensus on the status of Queensland’s component of each stock. Between 2010 and 2013, the process for assessing stock status was based on a Queensland-developed method (i.e. Queensland criteria and terminology). In 2014, the process was changed. In particular, the criteria and terminology used to determine status were modified to make them consistent with those used nationally for determining the status of stocks. This change ensured the results of the Queensland workshop were able to be used during the national process and should help to improve community confidence in the stock status findings. Stock status determinations help guide DAFF in decisions about fisheries management and research. In addition to this report, up-to-date commercial catch data for individual species can be obtained from and information about the fishery-dependent and -independent biological monitoring programs can be found at https://www.daff.qld.gov.au/fisheries/monitoring-our-fisheries/commercial-fisheries/species-specific-programs .
1 1 Queensland-specific information for seven SAFS species (mulloway, black jewfish, yellowtail kingfish, golden
snapper, blacktip shark, sandbar shark and Murray River cod) was not presented and discussed at the 2014 workshop.
https://www.daff.qld.gov.au/fisheries/monitoring-our-fisheries/commercial-fisheries/species-specific-programshttps://www.daff.qld.gov.au/fisheries/monitoring-our-fisheries/commercial-fisheries/species-specific-programs
Queensland Stock Status Assessment Workshop 2014 4
Fin Fish
Barramundi (Lates calcarifer)
Figure 1. East coast barramundi – all stocks combined. Total reported annual commercial catch (tonnes) and raw annual catch rate for net fishing (kg/100m net).
Figure 2. East coast barramundi – north east coast stock. Total reported annual commercial catch (tonnes) and raw annual catch rates for net fishing (kg/100 m of net).
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
100
200
300
400
500
600
700
800
Catc
h (
t)
0
10
20
30
40
50
Catc
h r
ate
(kg/1
00m
net)
Catch rate
Barramundi (EC)
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
50
100
150
200
250
300
350
400
Catc
h (
t)
0
20
40
60
80
100C
atc
h r
ate
(kg/1
00m
net)
Catch rate
Barramundi (north east coast)
Queensland Stock Status Assessment Workshop 2014 5
Figure 3. East coast barramundi – north east coast stock. Length frequency distributions of fish retained by commercial and recreational sectors in 2013.
Figure 4. East coast barramundi – north east coast stock. Annual age frequency distributions of fish retained by commercial and recreational sectors.
54
-55
58
-59
62
-63
66
-67
70
-71
74
-75
78
-79
82
-83
86
-87
90
-91
94
-95
98
-99
10
2-1
03
10
6-1
07
11
0-1
11
11
4-1
15
11
8-1
19
12
2-1
23
12
6-1
27
0
5
10
15
20Commercial
LTMP n=1260CFISH weight=92.8tunder legal size
legal size
54
-55
58
-59
62
-63
66
-67
70
-71
74
-75
78
-79
82
-83
86
-87
90
-91
94
-95
98
-99
10
2-1
03
10
6-1
07
11
0-1
11
11
4-1
15
11
8-1
19
12
2-1
23
12
6-1
27
Recreational
LTMP n=242
Total length (cm)
Pe
rce
nta
ge
of
ca
tch
East Coast - North
01020304050 2007
Commercial2007
Recreational
01020304050 2008 2008
01020304050 2009 2009
01020304050 2010 2010
01020304050 2011 2011
01020304050 2012 2012
1 3 5 7 9
11
13
15
17
19
21
23
25
27
29
01020304050 2013
1 3 5 7 9
11
13
15
17
19
21
23
25
27
29
2013
Age Group (years)
Pe
rce
nta
ge
of
Ca
tch
East Coast - North
Queensland Stock Status Assessment Workshop 2014 6
Figure 5. East coast barramundi – north east coast stock. Annual estimates of instantaneous rate of total mortality (Z) based on cross sectional analysis of annual age frequency distributions of fish retained by commercial and recreational sectors. ‘Cohort’ is a modelled average rate of total mortality calculated using all age-frequency distributions together (2007–2013) and taking account of year-to-year variation in year-class strength. The horizontal line indicates the rate of total mortality corresponding to twice the rate of natural mortality (2M). This is also the value for rate of total mortality where rates of fishing and natural mortality are equal (i.e. F=M).
Figure 6. East coast barramundi – central coast stock. Total reported annual commercial catch (tonnes) grouped by subregion, plus raw annual catch rates for net fishing (kg/100 m of net).
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Fitzroy Gladstone Central Coast other
0
50
100
150
200
250
300
350
400
Catc
h (
t)
0
50
100
150
200
250
300
Catc
h r
ate
(kg/1
00m
net)
Fitzroy CR Gladstone CR Central Coast other CR
Barramundi (central coast breakdown)
Queensland Stock Status Assessment Workshop 2014 7
54
-55
58
-59
62
-63
66
-67
70
-71
74
-75
78
-79
82
-83
86
-87
90
-91
94
-95
98
-99
10
2-1
03
10
6-1
07
11
0-1
11
11
4-1
15
11
8-1
19
12
2-1
23
12
6-1
27
0
5
10
15
20Commercial
LTMP n=2178CFISH weight=143.6tunder legal size
legal size
54
-55
58
-59
62
-63
66
-67
70
-71
74
-75
78
-79
82
-83
86
-87
90
-91
94
-95
98
-99
10
2-1
03
10
6-1
07
11
0-1
11
11
4-1
15
11
8-1
19
12
2-1
23
12
6-1
27
Recreational
LTMP n=66
Total length (cm)
Pe
rce
nta
ge
of
ca
tch
Fitzroy
Figure 7. East coast barramundi – central coast stock (Fitzroy subregion only). Length frequency distributions of fish retained by commercial and recreational sectors in 2013.
Commercial
01632486480 2007
Recreational2007
01632486480 2008 2008
01632486480 2009 2009
01632486480 2010 2010
01632486480 2011 2011
01632486480 2012 2012
1 3 5 7 9
11
13
15
17
19
21
23
25
27
29
01632486480 2013
1 3 5 7 9
11
13
15
17
19
21
23
25
27
29
2013
Age Group (years)
Pe
rce
nta
ge
of
Ca
tch
Fitzroy
Figure 8. East coast barramundi – central coast stock (Fitzroy subregion only). Annual age frequency distributions of fish retained by commercial and recreational sectors.
Queensland Stock Status Assessment Workshop 2014 8
0.0
0.5
1.0
1.5
2.0
Index
x$
estZ
2007 2008 2009 2010 2011 2012 2013 Cohort
Fitzroyx$
estZ
2M - Reference lineCommercial annualRecreational annual
Commercial cohort
Year
To
tal M
ort
ality
Ra
te (
Z)
Min Age= 3 Max Age = 11
Figure 9. East coast barramundi – central coast stock (Fitzroy subregion only). Annual estimates of instantaneous rate of total mortality (Z) based on cross sectional analysis of annual age frequency distributions of fish retained by commercial and recreational sectors. ‘Cohort’ is a modelled average rate of total mortality calculated using all age-frequency distributions together (2007–2013) and taking account of year-to-year variation in year-class strength. The horizontal line indicates the rate of total mortality corresponding to twice the rate of natural mortality (2M). This is also the value for rate of total mortality where rate of fishing mortality equals the rate of natural mortality (i.e. F=M).
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
50
100
150
200
250
300
350
400
Catc
h (
t)
0
20
40
60
80
100
Catc
h r
ate
(kg/1
00m
net)
Catch rate (kg/100m net)
Barramundi (PCB)
Figure 10. East coast barramundi – Princess Charlotte Bay stock. Total reported annual commercial catch (tonnes) and raw catch rates for net fishing (kg/100 m of net).
Queensland Stock Status Assessment Workshop 2014 9
Figure 11. East coast barramundi – Mackay stock. Total reported annual commercial catch (tonnes) and raw catch rates for net fishing (kg/100 m of net).
Figure 12. Gulf of Carpentaria barramundi – both stocks combined. Total reported annual commercial catch (tonnes) and raw catch rate for net fishing (kg/100m net).
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
50
100
150
200
250
300
350
400C
atc
h (
t)
0
20
40
60
80
100
Catc
h r
ate
(kg/1
00m
net)
Catch rate
Barramundi (Mackay)
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
200
400
600
800
1000
Catc
h (
t)
0
10
20
30
40
Catc
h r
ate
(kg/1
00m
net)
Catch rate
Barramundi (GOC all stocks)
Queensland Stock Status Assessment Workshop 2014 10
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
200
400
600
800
1000
Catc
h (
t)
0
10
20
30
40
50
60
70
Catc
h r
ate
(kg/1
00m
net)
Catch rate (kg/100m net)
Barramundi (GOC south stock)
Figure 13. Gulf of Carpentaria barramundi – southern stock. Total reported annual commercial catch (tonnes) and raw catch rates for net fishing (kg/100 m of net).
54
-55
58
-59
62
-63
66
-67
70
-71
74
-75
78
-79
82
-83
86
-87
90
-91
94
-95
98
-99
10
2-1
03
10
6-1
07
11
0-1
11
11
4-1
15
11
8-1
19
12
2-1
23
12
6-1
27
0
5
10
15
20Commercial
LTMP n=836CFISH weight=492.2tunder legal size
legal size
54
-55
58
-59
62
-63
66
-67
70
-71
74
-75
78
-79
82
-83
86
-87
90
-91
94
-95
98
-99
10
2-1
03
10
6-1
07
11
0-1
11
11
4-1
15
11
8-1
19
12
2-1
23
12
6-1
27
Recreational
LTMP n=228
Total length (cm)
Pe
rce
nta
ge
of
ca
tch
Gulf of Carpentaria
Figure 14. Gulf of Carpentaria barramundi – southern stock. Length frequency distributions of fish retained by commercial and recreational sectors in 2013.
Queensland Stock Status Assessment Workshop 2014 11
Figure 15. Gulf of Carpentaria barramundi – southern stock. Annual age frequency distributions of fish retained by commercial and recreational sectors.
01224364860 2007
Commercial2007
Recreational
01224364860 2008 2008
01224364860 2009 2009
01224364860 2010 2010
01224364860 2011 2011
01224364860 2012 2012
1 3 5 7 9
11
13
15
17
19
21
23
25
27
29
01224364860 2013
1 3 5 7 9
11
13
15
17
19
21
23
25
27
29
2013
Age Group (years)
Pe
rce
nta
ge
of
Ca
tch
Gulf of Carpentaria
Queensland Stock Status Assessment Workshop 2014 12
0.0
0.5
1.0
1.5
2.0
Index
x$
estZ
2007 2008 2009 2010 2011 2012 2013 Cohort
Gulf of Carpentariax$
estZ
2M - Reference lineCommercial annualRecreational annual
Commercial cohortRecreational cohort
Year
To
tal M
ort
ality
Ra
te (
Z)
Min Age= 3 Max Age = 11
Figure 16. Gulf of Carpentaria barramundi – southern stock. Annual estimates of instantaneous rate of total mortality (Z) based on cross sectional analysis of annual age frequency distributions of fish retained by commercial and recreational sectors. ‘Cohort’ is a modelled average rate of total mortality calculated using all age-frequency distributions together (2007–2013) and taking account of year-to-year variation in year-class strength.The horizontal line indicates the rate of total mortality corresponding to twice the rate of natural mortality (2M). This is also the value for rate of total mortality where rate of fishing mortality equals the rate of natural mortality (i.e. F=M).
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
200
400
600
800
1000
Catc
h (
t)
0
10
20
30
40
50
60
70
Catc
h r
ate
(kg/1
00m
net)
Catch rate (kg/100m net)
Barramundi (GOC north stock)
Figure 17. Gulf of Carpentaria barramundi – northern stock. Total reported annual commercial catch (tonnes) and raw catch rates for net fishing (kg/100 m of net).
Queensland Stock Status Assessment Workshop 2014 13
Coral trout (Plectropomus and Variola spp.)
1988-8
9
1989-9
0
1990-9
1
1991-9
2
1992-9
3
1993-9
4
1994-9
5
1995-9
6
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3
Catch (t)
TACC (t)
0
500
1000
1500
2000
2500
Catc
h (
t)
0
20
40
60
80
100
120
Catc
h r
ate
kg/primary day kg/dory day
Coral trout (EC commercial)
Figure 18. East coast coral trout. Total reported annual commercial catch (tonnes) and raw catch rates (kg/day per primary licence and kg/day per dory).
1995 2000 2005 2010
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Coral trout catch rate by quota year
Year
Sta
nd
ard
ise
d c
atc
h r
ate
Standardised catch rate
Average
Upper 10% buffer
Lower 10% buffer
Figure 19. East coast coral trout. Annual standardised catch rate, taking into account differences in daily catch rates between different months, locations and fishers, and the effects of different numbers of crew and dories. Horizontal lines show the mean and 80% confidence intervals.
Queensland Stock Status Assessment Workshop 2014 14
1995 2000 2005 2010
0.0
0.5
1.0
1.5
2.0
Coral trout by region (northern regions)
Year
Sta
nd
ard
ise
d c
atc
h r
ate
Cape York
Lockhart River
Princess Charlotte Bay
Cooktown
Cairns
Figure 20. East coast coral trout – northern regions. Annual standardised catch rate by region, taking into account differences in daily catch rates between different months, locations and fishers, and the effects of different numbers of crew and dories.
1995 2000 2005 2010
0.0
0.5
1.0
1.5
2.0
Coral trout by region (southern regions)
Year
Sta
nd
ard
ise
d c
atc
h r
ate
Townsville
Mackay
Swains
Capricorn-Bunker
Figure 21. East coast coral trout – southern regions. Annual standardised catch rate by region, taking into account differences in daily catch rates between different months, locations and fishers, and the effects of different numbers of crew and dories.
Queensland Stock Status Assessment Workshop 2014 15
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Fish trawl Line
0
5
10
15
20
25
30
Catc
h (
t)
0
20
40
60
80
100
120
Catc
h r
ate
(kg/d
ay)
Trawl catch rate Line catch rate
Coral trout (GOC)
Figure 22. Gulf of Carpentaria coral trout. Total reported annual commercial catch (tonnes) and raw catch rate (kg/day), grouped by fishing method.
Queensland Stock Status Assessment Workshop 2014 16
Crimson snapper (Lutjanus erythropterus)
1987-8
8
1988-8
9
1989-9
0
1990-9
1
1991-9
2
1992-9
3
1993-9
4
1994-9
5
1995-9
6
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3
Crimson snapper Nannygai - unspec
0
10
20
30
40
Catc
h (
t)
Crimson snapper (EC)
Figure 23. East coast crimson snapper and unspecified nannygai. Total reported annual commercial catch (tonnes).
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
GOCDFFTF NT
0
100
200
300
400
500
600
700
800
Catc
h (
t)
Crimson snapper (Northern Australian stock catch share)
Figure 24. Gulf of Carpentaria crimson snapper. Total reported annual commercial catch (tonnes) for Gulf of Carpentaria Developmental Fin Fish Trawl Fishery (GOCDFFTF) and the Northern Territory.
Queensland Stock Status Assessment Workshop 2014 17
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
50
100
150
200
250
300
350
Catc
h (
t)
0
500
1000
1500
2000
2500
3000
3500
Catc
h r
ate
(kg/d
ay)
Catch rate
Crimson snapper (GOC)
Figure 25. Gulf of Carpentaria crimson snapper. Total reported annual commercial catch (tonnes) and raw catch rate (kg/day) for Gulf of Carpentaria Developmental Fin Fish Trawl Fishery.
Figure 26. Gulf of Carpentaria crimson snapper. Observed (raw) and standardised catch rates for the Gulf of Carpentaria Developmental Fin Fish Trawl Fishery.
Queensland Stock Status Assessment Workshop 2014 18
Dusky flathead (Platycephalus fuscus)
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
0
20
40
60
80
100
Catc
h (
t)
0
5
10
15
20
Net
catc
h r
ate
kg/100m net kg/day
Flathead (all east coast)
.
Figure 27. East coast dusky flathead. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rates for net fishing (kg/100 m of net and kg/day).
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
0
20
40
60
80
100
Catc
h (
t)
0
5
10
15
20N
et
catc
h r
ate
kg/100m net kg/day
Flathead (north of Baffle)
Figure 28. East coast dusky flathead – north of Baffle Creek. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rates for net fishing (kg/100 m of net and kg/day).
Queensland Stock Status Assessment Workshop 2014 19
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
0
20
40
60
80
100
Catc
h (
t)
0
5
10
15
20
Net
catc
h r
ate
kg/100m net kg/day
Flathead (south of Baffle)
Figure 29. East coast dusky flathead – south of Baffle Creek. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rates for net fishing (kg/100 m of net and kg/day).
0
10
20
30
40 2010Commercial
2010Recreational
0
10
20
30
40 2011 2011
0
10
20
30
40 2012 2012
20-2
3
24-2
7
28-3
1
32-3
5
36-3
9
40-4
3
44-4
7
48-5
1
52-5
5
56-5
9
60-6
3
64-6
7
68-7
1
72-7
5
76-7
9
80-8
3
84-8
7
0
10
20
30
40 2013
20-2
3
24-2
7
28-3
1
32-3
5
36-3
9
40-4
3
44-4
7
48-5
1
52-5
5
56-5
9
60-6
3
64-6
7
68-7
1
72-7
5
76-7
9
80-8
3
84-8
7
2013
Total Length (cm)
Perc
enta
ge o
f catc
h
Figure 30. East coast dusky flathead – south of Baffle Creek. Annual length frequency distributions of fish retained by commercial and recreational sectors.
Queensland Stock Status Assessment Workshop 2014 20
0
10
20
30
40
50
602010
Commercial
0
10
20
30
40
50
602011
0
10
20
30
40
50
602012
0 1 2 3 4 5 6 7 8 9 10 11
0
10
20
30
40
50
602013
2010
Recreational
2011
2012
0 1 2 3 4 5 6 7 8 9 10 11
2013
Perc
enta
ge o
f catc
h
Age Group (Years)
Figure 31. East coast dusky flathead – south of Baffle Creek. Annual age frequency distributions of fish retained by commercial and recreational sectors.
y$Z
2007 2008 2009 2010 2011 2012 2013
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Year
Tota
l Mort
alit
y R
ate
(Z
)
Commercial
Recreational
2M
Figure 32. East coast dusky Flathead – south of Baffle Creek. Annual estimates of instantaneous rate of total mortality (Z) based on cross sectional analysis of age frequency distributions of fish retained by commercial and recreational sectors. The horizontal line indicates the rate of total mortality corresponding to twice the rate of natural mortality (2M). This is also the value for rate of total mortality where rates of fishing and natural mortality are equal (i.e. F=M).
Queensland Stock Status Assessment Workshop 2014 21
Golden snapper (Lutjanus johnii)
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
0
2
4
6
8
10
Catc
h (
t)
0
50
100
150
200
250
Catc
h r
ate
(kg/d
ay)
Net catch rate
Golden snapper (EC)
Figure 33. East coast golden snapper. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rates for net fishing (kg/100 m of net and kg/day).
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
10
20
30
40
Catc
h (
t)
0
100
200
300
400
500
600
Catc
h r
ate
(kg/d
ay)
Catch rate
Golden snapper (GOC)
Figure 34. Gulf of Carpentaria golden snapper. Total reported annual commercial catch (tonnes) and raw catch rate (kg/day) for Gulf of Carpentaria Developmental Fin Fish Trawl Fishery.
Queensland Stock Status Assessment Workshop 2014 22
Figure 35. Gulf of Carpentaria golden snapper. Observed (raw) and standardised catch rates for the Gulf of Carpentaria Developmental Fin Fish Trawl Fishery.
Queensland Stock Status Assessment Workshop 2014 23
Grey mackerel (Scomberomorus semifasciatus)
1992-9
3
1993-9
4
1994-9
5
1995-9
6
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3
Net Line
Quota (t)
0
50
100
150
200
250
300
350
400
450
Catc
h (
t)
0
10
20
30
40
Catc
h r
ate
(kg/1
00m
net)
Catch rate
Grey mackerel (EC catch and catch rate)
Figure 36. East coast grey mackerel. Total reported annual (financial year) commercial catch (tonnes) grouped by fishing method, plus raw catch rate for net fishing (kg/100 m net).
1993-9
4
1994-9
5
1995-9
6
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3
Net Line
0
50
100
150
200
250
Catc
h (
t)
0
20
40
60
80
100
120
Catc
h r
ate
(kg/1
00m
net)
Catch rate
Grey mackerel (North East catch and catch rate)
Figure 37. East coast grey mackerel – northern east coast stock. Total reported annual (financial year) commercial catch (tonnes) grouped by fishing method, plus raw catch rate for net fishing (kg/100 m net).
Queensland Stock Status Assessment Workshop 2014 24
1993-9
4
1994-9
5
1995-9
6
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3
Net Line
0
50
100
150
200
250C
atc
h (
t)
0
20
40
60
80
100
120
Catc
h r
ate
(kg/1
00m
net)
Catch rate
Grey mackerel (Bowen catch and catch rate)
Figure 38. East coast grey mackerel – Bowen region (transitional zone between NE coast and SE coast stocks). Total reported annual (financial year) commercial catch (tonnes) grouped by fishing method, plus raw catch rate for net fishing (kg/100 m net).
1993-9
4
1994-9
5
1995-9
6
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3Net Line
0
50
100
150
200
250
Catc
h (
t)
0
20
40
60
80
100
120
Catc
h r
ate
(kg/1
00m
net)
Catch rate
Grey mackerel (South east catch and catch rate)
Figure 39. East coast grey mackerel – southern east coast stock. Total reported annual (financial year) commercial catch (tonnes) grouped by fishing method, plus raw catch rate for net fishing (kg/100 m net).
Queensland Stock Status Assessment Workshop 2014 25
0
5
10
15
20 2008-2009n=22
cfish weight=0.3t
mls
North-eastLine
0
5
10
15
20 2009-2010n=147
cfish weight=2.3t
mls
0
5
10
15
20 2010-2011n=247
cfish weight=3t
mls
0
5
10
15
20 2011-2012n=436
cfish weight=7t
mls
38
-39
42
-43
46
-47
50
-51
54
-55
58
-59
62
-63
66
-67
70
-71
74
-75
78
-79
82
-83
86
-87
90
-91
94
-95
10
2-1
03
10
4-1
05
10
6-1
07
10
8-1
09
0
5
10
15
20 2012-2013n=463
cfish weight=5.3t
mls
2008-2009n=55
cfish weight=135.7t
mls
North-eastGill Net
2009-2010n=59
cfish weight=17.7t
mls
2010-2011n=1021
cfish weight=73.2t
mls
2011-2012n=3498
cfish weight=139.7t
mls
38
-39
42
-43
46
-47
50
-51
54
-55
58
-59
62
-63
66
-67
70
-71
74
-75
78
-79
82
-83
86
-87
90
-91
94
-95
10
2-1
03
10
4-1
05
10
6-1
07
10
8-1
09
2012-2013n=3134
cfish weight=71.8t
mls
2008-2009n=566
cfish weight=209.4t
mls
South-eastGill Net
2009-2010n=533
cfish weight=90.8t
mls
2010-2011n=478
cfish weight=40.9t
mls
2011-2012n=613
cfish weight=44.5t
mls
38
-39
42
-43
46
-47
50
-51
54
-55
58
-59
62
-63
66
-67
70
-71
74
-75
78
-79
82
-83
86
-87
90
-91
94
-95
10
2-1
03
10
4-1
05
10
6-1
07
10
8-1
09
2012-2013n=119
cfish weight=20.2t
mls
fork length (2cm size classes)
Pe
rce
nta
ge
of C
atc
h
Figure 40. East coast grey mackerel – northern and southern east coast stocks. Annual length frequency distributions of fish retained by commercial line and gill net sectors.
Queensland Stock Status Assessment Workshop 2014 26
02
04
06
02008-2009
North-eastLine
02
04
06
0
2009-2010
02
04
06
0
2010-2011
02
04
06
0
2011-2012
1 2 3 4 5 6 7 8 9 11 13
02
04
06
0
2012-2013
2008-2009
North-eastGill Net
2009-2010
2010-2011
2011-2012
1 2 3 4 5 6 7 8 9 11 13
2012-2013
2008-2009
South-eastGill Net
2010-2011
2011-2012
Age Group (years)
Pe
rce
nta
ge
of C
atc
h
Figure 41. East coast grey mackerel – northern and southern east coast stocks. Annual age frequency distributions of fish retained by commercial line and gill net sectors.
0.0
0.5
1.0
1.5
2008-2009 2010-2011 2012-2013 Cohort
Perf ormance Measure Threshold (2M)
Annual Estimate
Cohort Estimate
North-eastLine
0.0
0.5
1.0
1.5
2008-2009 2010-2011 2012-2013 Cohort
Perf ormance Measure Threshold (2M)
Annual Estimate
Cohort Estimate
North-eastGill Net
0.0
0.5
1.0
1.5
2008-2009 2009-2010 2010-2011 2011-2012
Perf ormance Measure Threshold (2M)
Annual Estimate
Cohort Estimate
South-eastGill Net
Year
To
tal M
ort
alit
y R
ate
(Z
)
Figure 42. East coast grey mackerel – northern and southern east coast stocks. Annual estimates of instantaneous rate of total mortality (Z) based on cross sectional analysis of annual age frequency distributions of fish retained by commercial line and gill net sectors. ‘Cohort’ is a modelled average rate of total mortality calculated using all age-frequency distributions together (2007–2013) and taking account of year-to-year variation in year-class strength. The horizontal line indicates the rate of total mortality corresponding to twice the rate of natural mortality (2M). This is also the value for rate of total mortality where rates of fishing and natural mortality are equal (i.e. F=M).
Queensland Stock Status Assessment Workshop 2014 27
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net QFJA net Other
Catch average (previous 5 yrs)
0
200
400
600
800
1000
Catc
h (
t)
0
20
40
60
80
100
Catc
h r
ate
(kg/1
00m
net)
Catch rate
Grey mackerel (GOC)
Figure 43. Gulf of Carpentaria grey mackerel. Total reported annual commercial catch (tonnes), plus raw catch rate (kg/100m net). QFJA net – net fishing under Queensland Fisheries Joint Authority.
Queensland Stock Status Assessment Workshop 2014 28
Red emperor (Lutjanus sebae)
1988-8
9
1989-9
0
1990-9
1
1991-9
2
1992-9
3
1993-9
4
1994-9
5
1995-9
6
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3
Catch (t)
0
50
100
150
200
250
Catc
h (
t)
0
10
20
30
40
Catc
h r
ate
kg/main vessel day kg/dory day
Red emperor (EC)
Figure 44. East coast red emperor. Total reported annual commercial catch (tonnes) and raw catch rates (kg/day per primary licence and kg/day per dory).
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Trawl Line
0
5
10
15
Catc
h (
t)
0
25
50
75
100
125
150
Catc
h r
ate
(kg/d
ay)
Trawl catch rate
Red emperor (GOC)
Figure 45. Gulf of Carpentaria red emperor. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rate for trawling (kg/day).
Queensland Stock Status Assessment Workshop 2014 29
Figure 46. Gulf of Carpentaria red emperor. Observed (raw) and standardised catch rates for the Gulf of Carpentaria Developmental Fin Fish Trawl Fishery.
Queensland Stock Status Assessment Workshop 2014 30
Redthroat Emperor (Lethrinus miniatus)
1988-8
9
1989-9
0
1990-9
1
1991-9
2
1992-9
3
1993-9
4
1994-9
5
1995-9
6
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3
Catch (t)
0
200
400
600
800
1000
Catc
h (
t)
0
10
20
30
40
50
60
70
Catc
h r
ate
kg/primary day kg/dory day
Redthroat emperor (EC commercial)
Figure 47. East coast redthroat emperor. Total reported annual commercial catch (tonnes) and raw catch rates (kg/day per primary licence and kg/day per dory).
1995 2000 2005 2010
0.0
0.2
0.4
0.6
0.8
1.0
1.2
RTE catch rate by quota year
Year
Sta
nd
ard
ise
d c
atc
h r
ate
Standardised catch rate
Average
Upper 10% buffer
Lower 10% buffer
Figure 48. East coast redthroat emperor. Annual standardised catch rate, taking into account differences in daily catch rates between different months, locations and fishers, and the effects of different numbers of crew and dories. Horizontal lines show the mean and 80% confidence intervals.
Queensland Stock Status Assessment Workshop 2014 31
1995 2000 2005 2010
0.0
0.5
1.0
1.5
RTE by region (northern regions)
Year
Sta
nd
ard
ise
d c
atc
h r
ate
Cape York
Lockhart River
Princess Charlotte Bay
Cooktown
Cairns
Figure 49. East coast redthroat emperor – northern regions. Annual standardised catch rate by region, taking into account differences in daily catch rates between different months, locations and fishers, and the effects of different numbers of crew and dories.
1995 2000 2005 2010
0.0
0.5
1.0
1.5
RTE by region (southern regions)
Year
Sta
nd
ard
ise
d c
atc
h r
ate
Swains
Capricorn-Bunker
Townsville
Mackay
Swains
Capricorn-Bunker
Figure 50. East coast redthroat emperor – southern regions. Annual standardised catch rate by region, taking into account differences in daily catch rates between different months, locations and fishers, and the effects of different numbers of crew and dories.
Queensland Stock Status Assessment Workshop 2014 32
Saddletail snapper (Lutjanus malabaricus)
1987-8
8
1988-8
9
1989-9
0
1990-9
1
1991-9
2
1992-9
3
1993-9
4
1994-9
5
1995-9
6
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3
Saddletail snapper Nannygai unspec
0
50
100
150
200
250
300
Catc
h (
t)
0
25
50
75
100
125
150
Catc
h r
ate
(kg/d
ay)
Saddletail rate
Saddletail snapper (EC)
Figure 51. East coast saddletail snapper and unspecified Nannygai. Total reported annual commercial catch (tonnes) and raw catch rate (kg/day).
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
GOCDFFTF NT
0
500
1000
1500
2000
Catc
h (
t)
Saddletail snapper (Northern Australian stock catch share)
Figure 52. Gulf of Carpentaria saddletail snapper. Total reported annual commercial catch (tonnes) for Gulf of Carpentaria Developmental Fin Fish Trawl Fishery (GOCDFFTF) and the Northern Territory.
Queensland Stock Status Assessment Workshop 2014 33
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
50
100
150
200
250
Catc
h (
t)
0
300
600
900
1200
1500
Catc
h r
ate
(kg/d
ay)
Catch rate
Saddletail snapper (GOC)
Figure 53. Gulf of Carpentaria saddletail snapper. Total reported annual commercial catch (tonnes) and raw catch rate (kg/day) for Gulf of Carpentaria Developmental Fin Fish Trawl Fishery.
Figure 54. Gulf of Carpentaria saddletail snapper. Observed (raw) and standardised catch rates for the Gulf of Carpentaria Developmental Fin Fish Trawl Fishery.
Queensland Stock Status Assessment Workshop 2014 34
Sand whiting (Sillago ciliata)
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
0
50
100
150
200
250
300
350
400
Catc
h (
t)
0
10
20
30
40
50
60
70
Net
catc
h r
ate
kg/100m net kg/day
Sand whiting (all east coast)
Figure 55. East coast sand whiting. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rates for net fishing (kg/100 m of net and kg/day).
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
0
50
100
150
200
250
300
350
400
Catc
h (
t)
0
10
20
30
40
50
60
70
Net
catc
h r
ate
kg/100m net kg/day
Sand whiting (north of Baffle)
Figure 56. East coast sand whiting – north of Baffle Creek. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rates for net fishing (kg/100 m of net and kg/day).
Queensland Stock Status Assessment Workshop 2014 35
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
0
50
100
150
200
250
300
350
400C
atc
h (
t)
0
10
20
30
40
50
60
70
Net
catc
h r
ate
kg/100m net kg/day
Sand whiting (south of Baffle)
Figure 57. East coast sand whiting – south of Baffle Creek. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rates for net fishing (kg/100 m of net and kg/day).
2007
2008
2009
2010
2011
2012
2013
Hervey Bay Moreton Bay
0
25
50
75
100
125
150
175
200
Catc
h (
t)
0
20
40
60
80
100
Catc
h r
ate
(kg/d
ay)
Hervey Bay catch rate Morteton Bay catch rate
Sandwhiting (Hervey Bay and Moreton Bay)
Figure 58. East coast sand whiting – Hervey and Moreton Bays. Total reported annual commercial catch (tonnes) and raw catch rates for net fishing (kg/100 m of net and kg/day).
Queensland Stock Status Assessment Workshop 2014 36
0
10
20
30
40
50
60 2010Commercial
2010Recreational
0
10
20
30
40
50
60 2011 2011
0
10
20
30
40
50
60 2012 2012
13-1
4
15-1
6
17-1
8
19-2
0
21-2
2
23-2
4
25-2
6
27-2
8
29-3
0
31-3
2
33-3
4
35-3
6
37-3
8
39-4
0
41-4
2
43-4
4
45-4
6
47-4
8
49-5
0
0
10
20
30
40
50
60 2013
13-1
4
15-1
6
17-1
8
19-2
0
21-2
2
23-2
4
25-2
6
27-2
8
29-3
0
31-3
2
33-3
4
35-3
6
37-3
8
39-4
0
41-4
2
43-4
4
45-4
6
47-4
8
49-5
0
2013
Total Length (cm)
Perc
enta
ge o
f catc
h
Figure 59. East coast sand whiting – south of Baffle Creek. Annual length frequency distributions of fish retained by commercial and recreational sectors.
0
10
20
30
40
50
602010
Commercial
0
10
20
30
40
50
602011
0
10
20
30
40
50
602012
0 1 2 3 4 5 6 7 8 9 10 11 12
0
10
20
30
40
50
602013
2010
Recreational
2011
2012
0 1 2 3 4 5 6 7 8 9 10 11 12
2013
Perc
enta
ge o
f catc
h
Age Group (Years)
Figure 60. East coast sand whiting – south of Baffle Creek. Annual age frequency distributions of fish retained by commercial and recreational sectors.
Queensland Stock Status Assessment Workshop 2014 37
y$Z
2007 2008 2009 2010 2011 2012 2013
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Year
Tota
l Mort
alit
y R
ate
(Z
)
Commercial
Recreational
2M
Figure 61. East coast sand whiting – south of Baffle Creek. Annual estimates of instantaneous rate of total mortality (Z) based on cross sectional analysis of age frequency distributions of fish retained by commercial and recreational sectors. The horizontal line indicates the rate of total mortality corresponding to twice the assumed rate of natural mortality (2M). This is also the value for rate of total mortality where rates of fishing and natural mortality are equal (i.e. F=M).
Queensland Stock Status Assessment Workshop 2014 38
Sea mullet (Mugil cephalus)
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
0
500
1000
1500
2000
2500
3000
3500
Catc
h (
t)
0
50
100
150
200
250
Catc
h r
ate
(kg/d
ay)
Catch rate (kg/day)
Sea mullet (cal yr)
Figure 62. East coast sea mullet. Total reported annual commercial catch (tonnes) and raw catch rates for net fishing (kg/day).
0
200
400
600
800
1000
1200
1400
1600
2007 2008 2009 2010 2011 2012 2013
Cat
ch (
t)
Year
Ocean Beach
Non-Ocean Beach
Figure 63. East coast sea mullet. Total reported annual commercial catch (tonnes) grouped by sector (Ocean Beach and Non-ocean Beach). Ocean Beach sector is defined by fishers requiring a K endorsement and fishing on designated ocean beaches between April and August. Non-ocean Beach sector includes all other catches.
Queensland Stock Status Assessment Workshop 2014 39
0
10
20
302011
Non-Ocean Beach
2011
Ocean Beach
0
10
20
302012 2012
20–21
22–23
24–25
26–27
28–29
30–31
32–33
34–35
36–37
38–39
40–41
42–43
44–45
46–47
48–49
50–51
52–53
54–55
56–57
58–59
60–61
0
10
20
302013
20–21
22–23
24–25
26–27
28–29
30–31
32–33
34–35
36–37
38–39
40–41
42–43
44–45
46–47
48–49
50–51
52–53
54–55
56–57
58–59
60–61
2013
Fork Length (cm)
Pe
rce
nta
ge
of ca
tch
Figure 64. East coast sea mullet – south of Baffle Creek. Annual length frequency distributions of fish retained by commercial Ocean Beach and Non-ocean Beach sectors. Ocean Beach sector is defined by fishers requiring a K endorsement and fishing on designated ocean beaches between April and August. Non-ocean Beach includes all other catches.
0
10
20
30
40
50
602008
0
10
20
30
40
50
602009
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
0
10
20
30
40
50
602010
2011
2012
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
2013
Perc
enta
ge o
f catc
h
Age Group (Years)
Figure 65. East coast sea mullet – south of Baffle Creek. Annual age frequency distributions of fish retained by commercial fishers (both sectors combined).
Queensland Stock Status Assessment Workshop 2014 40
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
2007 2008 2009 2010 2011 2012 2013
2M
Fishery
Year
To
tal M
ort
ality
Ra
te (
Z)
Figure 66. East coast sea mullet – south of Baffle Creek. Annual estimates of instantaneous rate of total mortality (Z) based on cross sectional analysis of age frequency distributions of fish retained by Ocean Beach and Non-ocean Beach sectors combined. The horizontal line indicates the rate of total mortality corresponding to twice the assumed rate of natural mortality (2M). This is also the value for rate of total mortality where rates of fishing and natural mortality are equal (i.e. F=M).
Queensland Stock Status Assessment Workshop 2014 41
Snapper (Chrysophrys auratus)
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
LF Net
0
50
100
150
200
250
300
Catc
h (
t)
Snapper (catch share)
Figure 67. East coast snapper. Total reported annual catch (tonnes) grouped by fishing method.
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
50
100
150
200
250
300
Catc
h (
t)
0
20
40
60
80
100
Catc
h r
ate
(kg/d
ay)
Catch rate Standardised catch rate
Snapper
Figure 68. East coast snapper. Total reported annual commercial catch (tonnes), raw catch rate (kg/day) and standardised catch rate.
Queensland Stock Status Assessment Workshop 2014 42
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
10
20
30
40
50
60
70C
atc
h (
t)
Snapper (charter)
Figure 69. East coast snapper. Total reported annual reported recreational catch from charter boats (tonnes).
0
10
20
302011
Recreational
2011
Commercial
2011
Charter
0
10
20
302012 2012 2012
20-2
4 30-3
4 40-4
4 50-5
4 60-6
4 70-7
4 80-8
4 90-9
4 100-1
04
110-1
14
0
10
20
302013
20-2
4 30-3
4 40-4
4 50-5
4 60-6
4 70-7
4 80-8
4 90-9
4 100-1
04
110-1
14
2013
20-2
4 30-3
4 40-4
4 50-5
4 60-6
4 70-7
4 80-8
4 90-9
4 100-1
04
110-1
14
2013
Total Length (cm)
Perc
enta
ge o
f catc
h
Figure 70. East coast snapper. Annual length frequency distributions of fish retained by commercial and recreational fishers. “Charter” refers to recreational fishers on board charter boats.
Queensland Stock Status Assessment Workshop 2014 43
0
10
20
30 2011Recreational
2011Commercial
2011Charter
0
10
20
302012 2012 2012
2 4 6 8 10 12 14 16 18 20+
0
10
20
302013
2 4 6 8 10 12 14 16 18 20+
2013
2 4 6 8 10 12 14 16 18 20+
2013
Age Group (years)
Perc
enta
ge o
f catc
h
Figure 71. East coast snapper. Annual age frequency distributions of fish retained by commercial and recreational fishers. “Charter” refers to recreational fishers on board charter boats.
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
0.6
2007 2008 2009 2010 2011 2012 2013
2M
CharterCommercial
Recreational
Year
To
tal M
ort
ality
Ra
te (
Z)
Figure 72. East coast snapper. Annual estimates of instantaneous rate of total mortality (Z) based on cross sectional analysis of age frequency distributions of fish retained by commercial and recreational fishers. “Charter” refers to recreational fishers on board charter boats. The horizontal line indicates the rate of total mortality corresponding to twice the assumed rate of natural mortality (2M). This is also the value for rate of total mortality where rates of fishing and natural mortality are equal (i.e. F=M).
Queensland Stock Status Assessment Workshop 2014 44
Spanish mackerel (Scomberomorus commerson)
1988-8
9
1989-9
0
1990-9
1
1991-9
2
1992-9
3
1993-9
4
1994-9
5
1995-9
6
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3
Catch (t)
0
100
200
300
400
500
600
700
800
Catc
h (
t)
0
20
40
60
80
100
Catc
h r
ate
(kg/d
ay)
kg/main vessel day kg/dory day
Spanish mackerel (EC commercial)
Figure 73. East coast Spanish mackerel. Total reported annual commercial catch (tonnes) and raw catch rates (kg/day per primary licence and kg/day per dory).
1989-9
0
1990-9
1
1991-9
2
1992-9
3
1993-9
4
1994-9
5
1995-9
6
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3Catch (t)
0
50
100
150
200
250
Catc
h (
t)
0
25
50
75
100
125
150
175
200
Catc
h r
ate
(kg/d
ay)
kg/main vessel day kg/dory day
Spanish mackerel (EC spawning grids)
Figure 74. East coast Spanish mackerel – “spawning” CFISH grids only (3 grids off Townsville and 1 grid off Bowen). Total reported annual commercial catch (tonnes) and raw catch rates (kg/day per primary licence and kg/day per dory).
Queensland Stock Status Assessment Workshop 2014 45
1996-9
7
1997-9
8
1998-9
9
1999-0
0
2000-0
1
2001-0
2
2002-0
3
2003-0
4
2004-0
5
2005-0
6
2006-0
7
2007-0
8
2008-0
9
2009-1
0
2010-1
1
2011-1
2
2012-1
3
Catch (t)
0
10
20
30
40
50C
atc
h (
t)
Spanish mackerel (EC charter)
Figure 75. East coast Spanish mackerel. Total reported annual recreational catch from charter boats (tonnes).
Queensland Stock Status Assessment Workshop 2014 46
0
5
102004-05
Commercial
n=26722004-05
Recreational
n=295
0
5
102005-06n=2885
2005-06n=351
0
5
10 2006-07n=2006
2006-07n=305
0
5
102007-08n=1878
2007-08n=411
0
5
102008-09n=3246
2008-09n=628
0
5
102009-10n=3804
2009-10n=830
0
5
102010-11n=3729
2010-11n=568
0
5
10 2011-12n=4646
2011-12n=367
60-6
164-6
568-6
972-7
376-7
780-8
184-8
588-8
992-9
396-9
7100-1
01
104-1
05
108-1
09
112-1
13
116-1
17
120-1
21
124-1
25
128-1
29
132-1
33
136-1
37
140-1
41
144-1
45
148-1
49
152-1
53
156-1
57
160-1
61
164-1
65
168-1
69
172-1
73
176-1
77
180-1
81
184-1
85
188-1
89
192-1
93
196-1
97
0
5
102012-13n=3741
60-6
164-6
568-6
972-7
376-7
780-8
184-8
588-8
992-9
396-9
7100-1
01
104-1
05
108-1
09
112-1
13
116-1
17
120-1
21
124-1
25
128-1
29
132-1
33
136-1
37
140-1
41
144-1
45
148-1
49
152-1
53
156-1
57
160-1
61
164-1
65
168-1
69
172-1
73
176-1
77
180-1
81
184-1
85
188-1
89
192-1
93
196-1
97
2012-13n=385
Fork length (cm)
Pe
rce
nta
ge
of ca
tch
Figure 76. East coast Spanish mackerel. Annual length frequency distributions of fish retained by commercial and recreational fishers. Vertical line shows approximate minimum legal fork length (75cm total length≈67cm fork length).
Queensland Stock Status Assessment Workshop 2014 47
0
20
40
602004-05
n=2672
Commercial2004-05
n=295
Recreational
0
20
40
602005-06
n=28852005-06
n=351
0
20
40
602006-07
n=20062006-07
n=305
0
20
40
602007-08
n=18782007-08
n=410
0
20
40
602008-09
n=32462008-09
n=628
0
20
40
602009-10
n=38042009-10
n=829
0
20
40
602010-11
n=37272010-11
n=568
0
20
40
602011-12
n=46462011-12
n=367
0 2 4 6 8 10 12 14 16 18 20 22 24 26
0
20
40
602012-13
n=3741
0 2 4 6 8 10 12 14 16 18 20 22 24 26
2012-13n=385
Age group (years)
Perc
enta
ge o
f catc
h
Figure 77. East coast Spanish mackerel. Annual age frequency distributions of fish retained by commercial and recreational fishers.
Queensland Stock Status Assessment Workshop 2014 48
0.0
0.2
0.4
0.6
0.8
1.0x$estZ
04-05 05-06 06-07 07-08 08-09 09-10 10-11 11-12 12-13 Cohort
2M reference point
Recreational
Commercial
Year
Tota
l M
ort
alit
y R
ate
(Z
)
Figure 78. East coast Spanish mackerel. Annual estimates of instantaneous rate of total mortality (Z) based on cross sectional analysis of age frequency distributions of fish retained by commercial and recreational fishers. The horizontal line indicates the rate of total mortality corresponding to twice the assumed rate of natural mortality (2M). This is also the value for rate of total mortality where rates of fishing and natural mortality are equal (i.e. F=M).
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Line Net Trawl
0
50
100
150
200
250
300
350
Catc
h (
t)
Spanish mackerel (GOC catch share)
Figure 79. Gulf of Carpentaria Spanish mackerel. Total reported annual catch (tonnes) grouped by fishing method.
Queensland Stock Status Assessment Workshop 2014 49
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
50
100
150
200
250
300C
atc
h (
t)
0
50
100
150
200
250
300
350
Catc
h r
ate
(kg/d
ay)
Catch rate
Spanish mackerel (GOC line)
Figure 80. Gulf of Carpentaria Spanish mackerel. Total reported annual commercial catch (tonnes) and raw catch rate (kg/day) for line fishing.
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
10
20
30
40
50
60
70
Catc
h (
t)
0
20
40
60
80
100
120
Catc
h r
ate
(kg/d
ay)
Catch rate
Spanish mackerel (GOC net)
Figure 81. Gulf of Carpentaria Spanish mackerel. Total reported annual commercial catch (tonnes) and raw catch rate for net fishing (kg/day).
Queensland Stock Status Assessment Workshop 2014 50
0
5
10
152007
Commercial
n=4842007
Recreational
n=57
0
5
10
152008
n=19142008
n=123
0
5
10
15 2009n=825
2009n=160
0
5
10
15 2010n=2404
2010n=43
0
5
10
15 2011n=3172
2011n=83
0
5
10
152012
n=27362012
n=113
60-6
164-6
568-6
972-7
376-7
780-8
184-8
588-8
992-9
396-9
7100-1
01
104-1
05
108-1
09
112-1
13
116-1
17
120-1
21
124-1
25
128-1
29
132-1
33
136-1
37
140-1
41
144-1
45
148-1
49
152-1
53
156-1
57
160-1
61
164-1
65
168-1
69
0
5
10
152013
n=830
60-6
164-6
568-6
972-7
376-7
780-8
184-8
588-8
992-9
396-9
7100-1
01
104-1
05
108-1
09
112-1
13
116-1
17
120-1
21
124-1
25
128-1
29
132-1
33
136-1
37
140-1
41
144-1
45
148-1
49
152-1
53
156-1
57
160-1
61
164-1
65
168-1
69
2013n=68
Fork length (cm)
Pe
rce
nta
ge
of ca
tch
Figure 82. Gulf of Carpentaria Spanish mackerel. Annual length frequency distributions of fish retained by commercial and recreational fishers. Vertical line shows approximate minimum legal fork length (75cm total length≈67cm fork length).
Queensland Stock Status Assessment Workshop 2014 51
01020304050
01020304050
2007n=484
Commercial
01020304050
2007n=57
Recreational
01020304050
01020304050 2008
n=1910
01020304050 2008
n=123
01020304050
01020304050
2009n=825
01020304050
2009n=160
01020304050
01020304050
2010n=2404
01020304050
2010n=43
01020304050
01020304050
2011n=3172
01020304050
2011n=83
01020304050
01020304050
2012n=2735
01020304050
2012n=113
01020304050
0 1 2 3 4 5 6 7 8 9 10 12 14 16
01020304050
2013n=830
01020304050
0 1 2 3 4 5 6 7 8 9 10 12 14 16
2013n=68
Age group (years)
Perc
enta
ge o
f catc
h
Figure 83. Gulf of Carpentaria Spanish mackerel. Annual age frequency distributions of fish retained by commercial and recreational fishers.
Queensland Stock Status Assessment Workshop 2014 52
Stout whiting (Sillago robusta)
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
QLD NSW
0
500
1000
1500
2000
2500
Catc
h (
t)
Stout whiting (Qld NSW catch share cal yr)
Figure 84. East coast stout whiting. Total reported annual commercial catch (tonnes) for Queensland and New South Wales.
Figure 85. East coast stout whiting. Annual standardised catch rate, taking into account vessel, season, location, fishing gear and environmental factors. Error bars show 95% confidence intervals.
Queensland Stock Status Assessment Workshop 2014 53
Figure 86. East coast stout whiting. Annual length frequency distributions of fish retained in the Fin Fish (Stout Whiting) Trawl Fishery.
Queensland Stock Status Assessment Workshop 2014 54
Figure 87. East coast stout whiting. Annual age frequency distributions of fish retained in the Fin Fish (Stout Whiting) Trawl Fishery.
Queensland Stock Status Assessment Workshop 2014 55
Tailor (Pomatomus saltatrix)
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
Quota (t)
0
50
100
150
200
250
300
Catc
h (
t)
0
25
50
75
100
125
150
Net
catc
h r
ate
Catch rate (kg/day) Catch rate (kg/100m net)
Tailor (catch and catch rate cal yr)
Figure 88. East coast tailor. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rates for net fishing (kg/100 m of net and kg/day).
Figure 89. East coast tailor – south of Baffle Creek. Total reported annual commercial catch (tonnes) by haul netting on ocean beaches, grouped by region.
Figure 90. East coast tailor – south of Baffle Creek. Total reported annual commercial effort (days) by haul netting on ocean beaches, grouped by region.
Queensland Stock Status Assessment Workshop 2014 56
Figure 92. East coast tailor – south of Baffle Creek. Total reported annual commercial effort (days) by gill netting, grouped by region (Moreton Bay and Fraser Inshore only).
Figure 91. East coast tailor – south of Baffle Creek. Total reported annual commercial catch (tonnes) by gill netting, grouped by region.
Figure 93. East coast tailor – south of Baffle Creek. Annual length frequency distributions of fish retained by recreational and commercial (ocean beach and gill net/tunnel net) sectors.
Queensland Stock Status Assessment Workshop 2014 57
Figure 94. East coast tailor – south of Baffle Creek. Annual age frequency distributions of fish retained by recreational and commercial (ocean beach and gill net/tunnel net) sectors.
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
2007 2008 2009 2010 2011 2012 2013
2M
Commercial (Gill Tunnel)Commercial (Ocean Beach)
Recreational
Year
To
tal M
ort
ality
Ra
te (
Z)
Figure 95. East coast tailor – south of Baffle Creek. Annual estimates of instantaneous rate of total mortality (Z) based on cross sectional analysis of age frequency distributions of fish retained by recreational and commercial (ocean beach and gill net/tunnel net) sectors. The horizontal line indicates the rate of total mortality corresponding to twice the rate of natural mortality (2M). This is also the value for rate of total mortality where rates of fishing and natural mortality are equal (i.e. F=M).
Queensland Stock Status Assessment Workshop 2014 58
Yellowfin bream (Acanthopagrus australis)
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
0
50
100
150
200
250
300
Catc
h (
t)
0
10
20
30
40
50
60
70
Net
catc
h r
ate
kg/100m net kg/day
Bream (all east coast)
Figure 96. East coast yellowfin bream. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rates for net fishing (kg/100 m of net and kg/day).
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
0
50
100
150
200
250
Catc
h (
t)
0
10
20
30
40
50
60
70
Net
catc
h r
ate
kg/100m net kg/day
Bream (north of Baffle)
Figure 97. East coast yellowfin bream – north of Baffle Creek. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rates for net fishing (kg/100 m of net and kg/day).
Queensland Stock Status Assessment Workshop 2014 59
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Net Line
0
50
100
150
200
250C
atc
h (
t)
0
10
20
30
40
50
60
70
Net
catc
h r
ate
kg/100m net kg/day
Bream (south of Baffle)
Figure 98. East coast yellowfin bream. Total reported annual commercial catch (tonnes) grouped by fishing method, plus raw catch rates for net fishing (kg/100 m of net and kg/day).
0
10
20
30
40
50
60 2010Commercial
2010Recreational
0
10
20
30
40
50
60 2011 2011
0
10
20
30
40
50
60 2012 2012
17-1
8
19-2
0
21-2
2
23-2
4
25-2
6
27-2
8
29-3
0
31-3
2
33-3
4
35-3
6
37-3
8
39-4
0
41-4
2
43-4
4
45-4
6
47-4
8
49-5
0
0
10
20
30
40
50
60 2013
17-1
8
19-2
0
21-2
2
23-2
4
25-2
6
27-2
8
29-3
0
31-3
2
33-3
4
35-3
6
37-3
8
39-4
0
41-4
2
43-4
4
45-4
6
47-4
8
49-5
0
2013
Total Length (cm)
Perc
enta
ge o
f catc
h
Figure 99. East coast yellowfin bream – south of Baffle Creek. Annual length frequency distributions of fish retained by commercial and recreational sectors.
Queensland Stock Status Assessment Workshop 2014 60
0
10
20
302010
Commercial
0
10
20
302011
0
10
20
302012
0 2 4 6 8 10 12 14 16 18 20
0
10
20
302013
2010
Recreational
2011
2012
0 2 4 6 8 10 12 14 16 18 20
2013
Perc
enta
ge o
f catc
h
Age Group (Years)
Figure 100. East coast yellowfin bream – south of Baffle Creek. Annual age frequency distributions of fish retained by commercial and recreational sectors.
y$Z
2007 2008 2009 2010 2011 2012 2013
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Year
Tota
l Mort
alit
y R
ate
(Z
)
Commercial
Recreational
2M
Figure 101. East coast yellowfin Bream – south of Baffle Creek. Annual estimates of instantaneous rate of total mortality (Z) based on cross sectional analysis of age frequency distributions of fish retained by commercial and recreational sectors. The horizontal line indicates the rate of total mortality corresponding to twice the rate of natural mortality (2M). This is also the value for rate of total mortality where rates of fishing and natural mortality are equal (i.e. F=M).
Queensland Stock Status Assessment Workshop 2014 61
Crabs
Blue swimmer crab (Portunus armatus)
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Pot Trawl
0
300
600
900
1200
1500
Catc
h (
t)
Blue swimmer crab (catch share)
Figure 102. East coast blue swimmer crab. Total reported annual commercial catch (tonnes) grouped by fishing method.
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Catch (t)
0
300
600
900
1200
1500
Catc
h (
t)
0
20
40
60
80
100
Catc
h r
ate
(kg/d
ay)
Catch rate Standardised catch rate
Blue swimmer crab (pot)
Figure 103. East coast blue swimmer crab. Total reported annual commercial catch (tonnes) by pot fishing, plus raw (kg/day) and standardised catch rates. Standardisation adjusts for factors like month, location, lunar phase and the effect of an investment warning in 2003.
Queensland Stock Status Assessment Workshop 2014 62
0
100
200
300
400
500
600
700
800
900
1,000
19
88
19
89
19
90
19
91
19
92
19
93
19
94
19
95
19
96
19
97
19
98
19
99
20
00
20
01
20
02
20
03
20
04
20
05
20
06
20
07
20
08
20
09
20
10
20
11
20
12
20
13
Ca
tch
(To
nn
es)
Year
Moreton Bay
Sunshine Coast to Fraser
Figure 104. East coast blue swimmer crab – southern east coast. Total reported annual commercial catch (tonnes) by pot fishing, grouped by region.
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
19
88
19
89
19
90
19
91
19
92
19
93
19
94
19
95
19
96
19
97
19
98
19
99
20
00
20
01
20
02
20
03
20
04
20
05
20
06
20
07
20
08
20
09
20
10
20
11
20
12
20
13
Eff
ort
(catc
he
s r
ep
ort
ed)
Year
Moreton Bay
Sunshine Coast to Fraser
Figure 105. East coast blue swimmer crab – southern east coast. Total reported annual commercial effort (catches reported) by pot fishing, grouped by region.
Queensland Stock Status Assessment Workshop 2014 63
0
5
10
15
20
25
30
35
40
45
50
55
60
88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13
Catc
h r
ate
(kg
/boat/day)
Year
Adjusted catch rate Average (2000-2012)
Lower decile Upper decile
Figure 106. East coast blue swimmer crab. Annual standardised catch rates. Standardisation adjusts for factors like month, location, lunar phase and the effect of an investment warning in 2003. Horizontal lines show the mean catch rate between 2000 and 2012, and the upper and lower deciles.
0
10
20
30
40
50
60
70
80
90
100
88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13
Catc
h r
ate
(kg
/boat/day)
Year
Moreton Bay - 46.6% of total catch
Adjusted catch rate
Average (2000-2012)
Upper decile
Lower decile
Figure 107. East coast blue swimmer crab – Moreton Bay. Annual standardised catch rates. Standardisation adjusts for factors like month, location, lunar phase and the effect of an investment warning in 2003. Horizontal lines show the mean catch rate between 2000 and 2012, and the upper and lower deciles.
Queensland Stock Status Assessment Workshop 2014 64
0
10
20
30
40
50
60
70
80
90
100
88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13
Ca
tch r
ate
(kg
/boa
t/day)
Year
Sunshine Coast to Fraser - 51.8% of total catch
Adjusted catch rate
Average (2000-2012)
Upper decile
Lower decile
Figure 108. East coast blue swimmer crab – Sunshine Coast to Fraser Island. Annual standardised catch rates. Standardisation adjusts for factors like month, location, lunar phase and the effect of an investment warning in 2003. Horizontal lines show the mean catch rate between 2000 and 2012, and the upper and lower deciles.
Figure 109. East coast blue swimmer crab – Moreton Bay. Annual index of abundance for juvenile crabs, estimated from fishery-independent trawl surveys.
Queensland Stock Status Assessment Workshop 2014 65
Mud crab (Scylla spp.)
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
EC GOC
0
300
600
900
1200
1500
Catc
h (
t)
0
10
20
30
