不同发育期的太平洋牡蛎在不同干露状态下的成活率研究

A Study on the Survival Rate of Pacific Oysters in Different Exposure States at Different Development Stages

用太平洋牡蛎的D形幼虫、壳顶中期幼虫、眼点幼虫、稚贝、幼贝及成体为材料，在8～10℃和20～22℃干、湿环境下干露不同时间对所取样品的成活率进行了比较研究。实验说明太平洋牡蛎其成体、D形幼虫、壳顶中期幼虫、眼点幼虫、稚贝及幼贝在低温湿润的条件下干露时间长，成活率高，而在高温干燥的条件下干露相同的时间成活率明显降低。在温度、湿度相同的条件下，其耐干能力为成贝〉眼点幼虫〉壳顶中期幼虫〉幼贝〉稚贝〉D形幼虫。本实验为太平洋牡蛎幼虫的异地采苗，稚贝和幼贝的长途运输，成贝低温或干露保存提供了一定的科学依据。

In this study the survival rates of D-stage larvae, Umbo-larvae, eye-spot larvae, spats, young and adult Pacific oysters were compared in the two temperature ranges： 8-10℃ and 20-22℃, exposed to air, in both dry and wet envirenments. The results indicate that the survival rates of D-stage larvae, Umbo-larvae, eye-spot larvae, spats, young and adult Pacific oysters were higher at low temperature in wet environment than at high temperature in dry environment. The ability to with stand exposure to air was oysters 〉 eye-spot larvae 〉 Umbo-larvae 〉young oysters〉 spats 〉D-stage larvae. The results are of value to seeds collection of the Pacific oysters, long-distance transport of juveniles and young oysters, and preservation, of adultoysters during air exposure or in low temperature.