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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
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Dissection of a Standing Dead Coconut Palm
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Vertical Distribution of Animals Inhabiting a Standing Dead Coconut 19’: nothing 18’: cockroach; 2 sm. blue metallic beetles; gecko egg; 2 millipedes 17’: 2 gecko eggs; 5 carpenter bee larvae; 2 Scolopendra centipedes; 2 beetles (passalids?) 16’: 14 carpenter bee larvae; 6 gecko eggs 15’: 3 carpenter bee larvae 14’: 6 CRB larvae; spider; cockroach; carpenter bee larva 13’: 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 larva 11’: 7 CRB larvae; carpenter bee adult; carpenter bee pupa 10’: CRB larva; cockroach; adult carpenter bee 9’: cockroach; sm. metallic blue beetle; 3 termites; adult carpenter bee; 2 carpenter bee larvae; sm. centipede; 2 lepidoptera larvae 8’: CRB larva 7’: CRB larva; 2 carpenter bee adults 6’: CRB larva; 2 carpenter bee adults 5’: carpenter bee adult 4’: Scolopendra centipede 3’: carpenter bee adult 2’; nothing 1: carpenter bee adult Stump: nothing
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Vertical Distribution of CRB Larvae & Adults in Standing Dead Coconut Trankilidat, 25 Oct 2007
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CRB Breeding in Coconut Stumps
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CRB Extracted from Coconut Stumps at Trankilidat, 25 Oct 2007 StumpLarvaePupaeAdults 17700 27800 32100 41101 53060 6500 7000 8600 9600 102800
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CRB Adults Attacking & Killing Young Coconut Palms
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Gun Beach / Faifai Beach
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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 3 rd instar, and we are started to see pupae. We can expect to see an outbreak of adults within 1-2 months.
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