Date post: | 24-Dec-2014 |
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International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
Biological pest control in tree crops
Mites on coconut; Sri Lanka fruit fly on mango and other host fruits
Baits for the control of cucurbit fruit flies
Rachid Hanna
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
Aceria guerreronis on theunderside of coconut bract
Severely damaged bunch
Undamaged bunch
Classical biological control of the coconut mite
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
Foreign exploration for the coconut mite and associated natural enemies in America continent
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
Phytoseiid mites on conconutPhytoseiid mites on conconutVenezuelaVenezuelaPREDATORY MITES
PHYTOSEIIDAE Fr1 Lf1 Fn1
Amblyseius chiapensis - 5 -
Amblyseius largoensis 81 316 2
Amblyseius operculatus - 11 -
Amblyseius sp. - 30 -
Amblyseius tamatavensis - 1 -
Cocoseius sp. - 3 -
Euseius naindaime - 3 -
Iphiseiodes zuluagai - 49 -
Leonseius regularis - 3 -
Metaseiulus (Metaseiulus)ellipticus - 5 -
Neoseiulus baraki 8 - -
Neoseiulus californicus - 1 -
Neoseiulus paspalivorus 209 - 23
Neoseiulus sp. 7 - 1
Prorpioseiopis mexicanus 2 - 1
Typhlodromina subtropica 1 1 -
Typhlodromips aff. mangleae - 1 -
Typhlodromips sp1. 2 1 -
Typhlodromips sp2. - 1 -
Typhloseiopsis funiculatus - 2 -
Typhloseiopsis aff. maryae - 1 -
Typhloseiopsis sp. 1 1 - 1Fr = fruit; Lf = leaflets; Fn = fallen nuts
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
Introduction and evaluation of Fopius arisanus for the control of
the Sri Lanka fruit fly
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
Parasitism of B. invadens and five indigenous fruit fly species by F. arisanus
Fruit fly species NParasitized
pupaeProportion parasitized
Bactrocera invadens 22 78.82 ± 8.01 0.67 ± 0.04
Ceratitis capitata 17 28.94 ± 3.57 0.37 ± 0.04
Ceratitis cosyra 24 9.38 ± 2.09 0.18 ± 0.05
Ceratitis rosa 6 0.17 ± 0.17 0.00 ± 0.00
Ceratitis fasciventris 7 0.00 ± 0.00 0.00 ± 0.00
Ceratitis anonae 6 3.50 ± 1.34 0.02 ± 0.01
- Highest parasitism of B. invadens- New association of C. cosyra
Mohammad et al. manusc. In prep
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
Field evaluations of F. arisanus
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
B. invadensadded
F. arisanusadded
A B
Days after cage installation
0 3 6 9 12 0 3 6 9 12
Whole tree cages in guava orchards
Orchard A Orchard B
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
Fopius arisanus introduced into Benin and Togo in 2009
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
Other evaluations
Open field evaluations in five mango orchards in Benin and two in Togo;
Two citrus orchards in Benin
Similar evaluations on wild hosts: Terminalia and wild apple (Irviginia gabonensis)
> 100,000 parasitoids released
Recovery from all sites
Continuing to follow establishment
Additional releases in 2010
Metarhizium:
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
Baits for the control of fruit flies in cucurbits
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
$624
Net gain
$1425
Management of cucurbit fruit flies with bait sprays GF-120
International Institute of Tropical Agriculture – Institut international d’agriculture tropicale – www.iita.org
Outlook
Participatory evaluations with farmers
Other crops: e.g., tomato
Other baits: e.g., bait from waste yeasts from local breweries.