11 Tables, Plates and Figures

TABLE 1 Estimate of the number of coconut crabs exported to New Zealand by individual passengers during the period 1.06.87 to 18.03.88.

TYPE OF CONTAINER	NUMBER OF CONTAINERS	AVERAGE NUMBER OF CRABS PER CONTAINER			TOTAL NO. OF CRABS PER CONTAINER TYPE
TYPE OF CONTAINER	NUMBER OF CONTAINERS	SMALL	MED	LARGE	TOTAL NO. OF CRABS PER CONTAINER TYPE
CARTON	149	27	20	15	2235 – 4023
‘HAND’ BAG	42	22	15	10	420 – 924
CHILLYBIN	18	42	33	23	414 – 756
SUITCASE	3	60	45	33	99 – 180
PLASTIC BAG	1	15	12	8	8 – 15

TABLE 2 Niue coconut crab survey data showing calculated land area, mean CPUE and estimated crab population for each vegetation category.

VEGETATION CATEGORY	LAND AREA		MEAN CPUE	CRAB POPULATION
VEGETATION CATEGORY	Actual (ha)	% Total	MEAN CPUE	Actual	% Total
Coastal Forest	2999	11.5	0.378	137560	75.8
Primary Forest (Coastal)	1002	3.8	0.070	10820	6.0
Primary Forest (Inland)	2046	7.9	0.014	4910	2.7
Light & Scattered (Coastal)	5685	21.8	0.063	25840	14.2
Light & Scattered (Inland)	6406	24.6	0.004	2310	1.3
Fernland Regions	7915	30.4	0	0	0
TOTAL	26050	100	NA	181440	100

TABLE 3 Male and female morphometric data

	MEAN TL (MM)	MEAN WGHT (GM)	SAMPLE SIZE	NO. ON ISLAND	% TOTAL POPULATION
MALES	32.5	375	91	96160	53
FEMALES	26.9	180	123	85280	47

TABLE 4 Niue coconut crab size frequency data for females.
(Size class = 2mm thoracic length)

SIZE CLASS (mm)	POPULATION		CUMULATIVE
SIZE CLASS (mm)	% Total	Actual	Percent	Actual
16 – 18	2.68	2286	2.68	2286
18 – 20	0	0	2.68	2286
20 – 22	2.68	2286	5.36	4572
22 – 24	9.82	8375	15.18	12947
24 – 26	28.57	24363	43.75	37310
26 – 28	18.75	15990	62.50	53300
28 – 30	16.96	14463	79.46	67763
30 – 32	11.61	9901	91.07	77664
32 – 34	6.25	5330	97.32	82994
34 – 36	2.68	2286	100	85280

TABLE 5 Niue coconut crab size frequency data for males.
(Size class = 2mm thoracic length)

SIZE CLASS (mm)	POPULATION		CUMULATIVE
SIZE CLASS (mm)	% Total	Actual	Percent	Actual
12 – 14	0.67	644	0.67	644
14 – 16	0.67	644	1.34	1288
16 – 18	0.67	644	2.01	1932
18 – 20	0	0	2.01	1932
20 – 22	1.33	1279	3.34	3211
22 – 24	12.67	12184	16.01	15395
24 – 26	7.33	7049	23.34	22444
26 – 28	12.00	11539	35.34	33983
28 – 30	13.30	12789	48.64	46772
30 – 32	8.67	8337	57.31	55109
32 – 34	9.33	8972	66.64	64081
34 – 36	6.0	5770	72.64	69851
36 – 38	5.33	5125	77.97	74976
38 – 40	4.67	4491	82.64	79467
40 – 42	2.67	2568	85.31	82035
42 – 44	2.67	2567	87.98	84602
44 – 46	1.33	1278	89.31	85880
46 … 58	10.69	10280	100	96160

WORLD DISTRIBUTION OF THE COCONUT CRAB BIRGUS LATRO (L.) (BOUNDED AREA)

Map of Niue showing 5 major habitat categories based on vegetation type and distance from the coast.

(Coastal: < 2 km from coast; Inland: > 2 km from coast)

FIGURE 3 Position of population survey transects

Figure 4 Coconut Crab indicating the position of the Thoracic Length (TL) measurement.

TL - Thoracic Length (measured in millimetres)

Figure 5 Size frequency distribution (1990) for A Male and B Female coconut crabs on Niue Island.

Figure 5a

Figure 5b

Figure 6 Size frequency distribution for female coconut crabs on Niue for A 1990 and B 1988.

A 1990

Figure 6a

B 1988

Figure 6b

Figure 7 Size frequency distribution of female coconut crabs on Niue, Vanuatu and Christmas Island

Thoracic Length (mm)

Figure 8 Size frequency distribution of male coconut crabs on Niue, Vanuatu and Christmas Island

Thoracic Length (mm)

Von Bertalanffy growth curves for A Male and B Female coconut crabs showing the approximate age/size at which crabs become sexually mature

Location of Existing and Proposed Coconut Crab Sanctuaries

Plate 1 Coastal Forest	Plate 2 High Forest

Plate 3 Regenerating Forest	Plate 4 Fernland