Growth of the tropical scallop, Euvola (Pecten) ziczac, in bottom and suspended culture in the Golfo de Cariaco, Venezuela
Growth of the tropical scallop, Euvola (Pecten) ziczac, in bottom and suspended culture in the Golfo de Cariaco, Venezuela
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委内瑞拉卡里亚科湾的热带扇贝 Euvola (Pecten) ziczac 在底部和悬浮养殖中的生长
DOI：
10.1016/0044-8486(95)01055-6
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
N. Marín
中科院分区：
文献类型：
--
作者：
A. Velez;L. Freites;J. Himmelman;W. Senior;N. Marín
比较了扇贝Euvola（Pecten）ziczac（L.）在有可能用于商业养殖的三种情况下，即悬挂的网箱、底部的网箱和部分埋在沉积物底部的网箱。后者允许扇贝像在自然栖息地一样埋葬自己。在整个7个月的研究中，以壳长和肌肉质量测量的生长，对于部分掩埋的笼子中的扇贝来说是上级的。这可能是由于围隔对扇贝的应激作用，使其不能埋藏;沉积物/水界面上的有机质是扇贝重要的食物来源，E. ziczac有更好的访问时，它埋本身与底部齐平。性腺生长和产卵的时间显着不同的治疗。有些产卵与温度上升相吻合，但其他人没有。悬浮扇贝与底层处理扇贝之间的差异表明，繁殖受扇贝直接环境条件的控制，也受大规模环境因素的控制。存活率最高的扇贝保持在部分掩埋的笼子。
We compared the growth of the scallop Euvola (Pecten) ziczac (L.) in three situations which potentially could be used for commercial culture, in cages maintained in suspension, in cages on the bottom and in cages partly buried in a sediment bottom. The latter permitted the scallops to bury themselves as in their natural habitat. Throughout the 7-month study, growth, as measured by shell length and muscle mass, was by far superior for scallops in the partly buried cages. Possible explanations for this are (1) that the scallops are stressed by enclosures which prevent them from burying themselves and (2) that organic material at the sediment/water interface is an important food resource and E. ziczac has better access to this when it buries itself flush with the bottom. The timing of gonadal growth and spawning varied markedly among treatments. Some spawnings coincided with temperature increases but others did not. Differences between scallops in suspension compared to those in bottom treatments suggested that reproduction is as much controlled by conditions in the immediate environment of the scallops as by large-scale environmental factors. Survival was highest for the scallops maintained in partly buried cages.