CULTIVATION, SPAWNING, AND GROWTH OF THE GIANT CLAMS TRIDACNA-GIGAS, TRIADACNA-DERASA, AND TRIADACNA-SQUAMOSA IN PALAU, CAROLINE-ISLANDS
CULTIVATION, SPAWNING, AND GROWTH OF THE GIANT CLAMS TRIDACNA-GIGAS, TRIADACNA-DERASA, AND TRIADACNA-SQUAMOSA IN PALAU, CAROLINE-ISLANDS
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DOI：
10.1016/0044-8486(81)90040-5
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发表时间：
1981-01-01
期刊：
影响因子：
4.5
通讯作者：
BECKVAR, N
中科院分区：
文献类型：
--
作者：
BECKVAR, N
巨型砗磲、德拉萨砗磲和鳞砗磲的幼虫在实验室中饲养，幼体则在室外阳光照射、流动的海水系统中培养。配子是通过实验室自发产卵和用 H2O2 诱导产卵获得的。系统中没有添加任何补充食物。实验室饲养的巨型巨蜥在 10 个月时平均长度达到 2.6 厘米。受精后； T. derasa 在 5 个月时平均长度为 1.1 厘米。和 T. squamosa 在 2 岁时的平均长度为 6.7 厘米。对 12-25 厘米长的蛤蜊进行的现场生长研究预测，每年的生长预计会很高：T. gigas 每年生长 8-12 厘米； T. derasa 每年生长 3-6 厘米；河马 河马每年生长 3-5 厘米；和 T. squamosa 每年生长 2-4 厘米。每个物种的瞬时生长率随着长度的增加而降低。海水养殖和过度捕捞珊瑚礁的种植可能不会被审查其可行性。
Larvae of the giant clams T. gigas, T. derasa and T. squamosa were reared in the laboratory and juveniles were cultivated outdoors in a sunlit, flowing seawater system. Gametes were obtained from spontaneous laboratory spawnings and by induction of spawning with H2O2. No supplemental food was added to the system. Laboratory reared T. gigas reached a mean length of 2.6 cm at 10 mo. post-fertilization; T. derasa were 1.1 cm mean length at 5 mo. and T. squamosa were 6.7 cm mean length at 2 yr. Field growth studies on clams, 12-25 cm long, predict high projected growth per year: T. gigas grow 8-12 cm/yr; T. derasa grow 3-6 cm/yr; Hippopus hippopus grow 3-5 cm/yr; and T. squamosa grow 2-4 cm/yr. Instantaneous growth rates decrease with increasing length for each species. Mariculture and the seeding of overharvested reefs may not be examined for their feasibility.