Rhino Hunting Ag. 109 Trankilidot, Tumon Bay, Guam 25 Oct 2007
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Transcript of Rhino Hunting Ag. 109 Trankilidot, Tumon Bay, Guam 25 Oct 2007
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Rhino HuntingAg. 109
Trankilidot, Tumon Bay, Guam25 Oct 2007
Roland QuituguaAubrey MooreBob BourgeoisBen Quichocho
Pat ArteroAg. 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 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
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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)
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CRB Breeding in
Coconut Stumps
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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
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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 3rd 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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