ABSTRACT This paper examines the responses of the fluted giant clam Tridacna squamosa pediveligers to elevated temperature and reduced light levels. In a light reduction experiment, a total of 104,000 T. squamosa pediveligers were exposed to four different levels of shading for approximately one month. The most heavily shaded treatment, at 0.4% of ambient light, had significantly lower survival than the other groups, which all received 1% or more of ambient light. In a second experiment, for approximately two weeks 13,000 T. squamosa pediveligers were divided among three treatments: one at ambient temperature averaging 29.5 °C, and two with elevated temperatures averaging 32.2 °C and 34.8 °C. The elevated temperature treatments resulted in near total mortality. The highest temperature survived by any pediveliger was 32.8 °C. Our results indicate a potential synergetic effect, with turbidity causing giant clam pediveligers to settle in shallower water―where they will likely be exposed to higher temperatures.

中文翻译：

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弱光和高温对沟纹巨蛤Tridacna squamosa的繁殖体的影响

摘要 本文研究了带凹槽的巨蛤 Tridacna squamosa pediveligers 对升高的温度和降低的光照水平的反应。在减光实验中，总共有 104,000 只 T.squamosa pediveligers 暴露在四种不同程度的阴影下大约一个月。最严重的阴影处理（0.4% 的环境光）的存活率显着低于其他组（均接受 1% 或更多的环境光）。在第二个实验中，大约两周的时间里，13,000 只 T.squamosa pediveligers 被分为三种处理：一种在平均 29.5 °C 的环境温度下，另一种在平均 32.2 °C 和 34.8 °C 的高温下进行。升高的温度处理导致接近总死亡率。任何pediveliger存活的最高温度为32.8°C。