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Rhino Hunting Ag. 109 Trankilidot, Tumon Bay, Guam 25 Oct 2007 Roland Quitugua Aubrey Moore Bob Bourgeois Ben Quichocho Pat Artero Ag. 109 Students
Rhino HuntingAg. 109
Trankilidot, Tumon Bay, Guam25 Oct 2007
Roland QuituguaAubrey MooreBob BourgeoisBen Quichocho
Pat ArteroAg. 109 Students
Dissection of a Standing Dead Coconut Palm
Vertical Distribution of Animals Inhabiting a Standing Dead Coconut19’: nothing18’: cockroach; 2 sm. blue metallic beetles; gecko egg; 2 millipedes17’: 2 gecko eggs; 5 carpenter bee larvae; 2 Scolopendra centipedes; 2 beetles (passalids?)16’: 14 carpenter bee larvae; 6 gecko eggs15’: 3 carpenter bee larvae14’: 6 CRB larvae; spider; cockroach; carpenter bee larva13’: adult CRB male; CRB larva; Scolopendra centipede; 3 worms; unidentified beetle larva; 2 millipedes; small centipede; adult carabid beetle; gecko egg; ~30 small fly larvae (syrphids?)12’: adult CRB female; 2 CRB grubs; unidentified beetle larva11’: 7 CRB larvae; carpenter bee adult; carpenter bee pupa10’: CRB larva; cockroach; adult carpenter bee9’: cockroach; sm. metallic blue beetle; 3 termites; adult carpenter bee; 2 carpenter bee larvae;
sm. centipede; 2 lepidoptera larvae8’: CRB larva7’: CRB larva; 2 carpenter bee adults6’: CRB larva; 2 carpenter bee adults5’: carpenter bee adult4’: Scolopendra centipede3’: carpenter bee adult2’; nothing1: carpenter bee adultStump: nothing
Vertical Distribution of CRB Larvae & Adults in Standing Dead Coconut
Trankilidat, 25 Oct 2007
0 1 2 3 4 5 6 7 8
Stump1'2'3'4'5'6'7'8'9'
10'11'12'13'14'15'16'17'18'19'
CRB larvae (n=20)
CRB adults (n=2)
CRB Breeding in
Coconut Stumps
CRB Extracted from Coconut Stumps at Trankilidat, 25 Oct 2007
Stump Larvae Pupae Adults
1 77 0 0
2 78 0 0
3 21 0 0
4 11 0 1
5 30 6 0
6 5 0 0
7 0 0 0
8 6 0 0
9 6 0 0
10 28 0 0
CRB Adults Attacking &
Killing Young Coconut Palms
Gun Beach / Faifai Beach
Conclusions• Decaying coconut stumps are an excellent
breeding site for CRB. Necessitates spot treatment with persistent insecticide.
• Young coconut palms (1-4 yrs. Old) are being killed by CRB adult feeding activity.
• We do not yet have confirmation that CRB is breeding at Faifai Beach. However, numerous standing, dead coconuts should be inspected & removed ASAP. (Same with Gun Beach).
• Most larvae at Trankilidot are 3rd instar, and we are started to see pupae. We can expect to see an outbreak of adults within 1-2 months.
