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.