DMAC - Clam estimates

Djulin Marine Aboriginal Corporation

Aquaculture profit estimates

Giant Clams at Pioneer Bay, Orpheus Island

The following table shows the value of farming giant clams (Tridacna gigas) as a medium to large-scale aquaculture business:

Giant clam culture estimates [e.g. Tridacna gigas]. Note most likely market age is 3-6 years

Year of age	Approx. size (cm)	Stocking density/ sq m	Annual survival rate	$ value per clam	Total per ha surviving	$ value of clams per ha	Total in 10 ha surviving	$ value of clams per 10 ha	Total in 50 ha surviving	$ value of clams per 50 ha
0.5	1.5	1000	0.25	0.75	2,500,000	1875000
1	2.5	500	0.3	1	1,500,000	1500000
2	9	50	0.4	2.75	200,000	550000	2,000,000	5500000	10000000	27500000
3	15	30	0.45	4	135,000	540000	1,350,000	5400000	6750000	27000000
4	21	20	0.53	5.5	106,000	583000	1,060,000	5830000	5300000	29150000
5	27	17	0.65	7	110,500	773500	1,105,000	7735000	5525000	38675000
6	32	13	0.72	8.5	93,600	795600	936,000	7956000	4680000	39780000
7	37	10	0.8	10	80,000	800000	800,000	8000000	4000000	40000000
8	41	5	0.86	12	43,000	516000	430,000	5160000	2150000	25800000
9	44	5	0.88	15	44,000	660000	440,000	6600000	2200000	33000000
10	49	3	0.91	18	27,300	491400	273,000	4914000	1365000	24570000
11	52	3	0.94	22	28,200	620400	282,000	6204000	1410000	31020000
12	55	2	0.94	27	18,800	507600	188,000	5076000	940000	25380000
13	60	2	0.95	32	19,000	608000	190,000	6080000	950000	30400000
14	64	1	0.95	40	9,500	380000	95,000	3800000	475000	19000000
15	69	1	0.96	50	9,600	480000	96,000	4800000	480000	24000000
16	73	1	0.96	60	9,600	576000	96,000	5760000	480000	28800000
17	75	0.7	0.97	70	6,790	475300	67,900	4753000	339500	23765000
18	77	0.7	0.97	80	6,790	543200	67,900	5432000	339500	27160000
19	79	0.5	0.98	90	4,900	441000	49,000	4410000	245000	22050000
20	80	0.5	0.98	100	4,900	490000	49,000	4900000	245000	24500000

updated 13th Nov 2013