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Differential timing of larval starvation effects on filtration rate and growth in juvenile Crepidula onyx

机译：幼虫饥饿的不同时机对Cre玛瑙幼虫的过滤速率和生长的影响

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This study demonstrates that the timing of larval starvation did not only determine the larval quality (shell length, lipid content, and RNA:DNA ratio) and the juvenile performance (growth and filtration rates), but also determine how the latent effects of larval starvation were mediated in Crepidula onyx. The juveniles developed from larvae that had experienced starvation in the first two days of larval life had reduced growth and lower filtration rates than those developed from larvae that had not been starved. Lower filtration rates explained the observed latent effects of early larval starvation on reduced juvenile growth. Starvation late in larval life caused a reduction in shell length, lipid content, and RNA:DNA ratio of larvae at metamorphosis; juveniles developed from these larvae performed poorly in terms of growth in shell length and total organic carbon content because of "depletion of energy reserves" at metamorphosis. Results of this study indicate that even exposure to the same kind of larval stress (starvation) for the same period of time (2 days) can cause different juvenile responses through different mechanisms if larvae are exposed to the stress at different stages of the larval life.
机译：这项研究表明，幼虫饥饿的时机不仅决定了幼虫的质量（壳长，脂质含量和RNA：DNA比）和幼年性能（生长和滤过率），而且还决定了幼虫饥饿的潜在影响是在Crepidula玛瑙中介导的。从幼虫生活的前两天经历饥饿的幼虫发育而来的幼虫，与从未饥饿的幼虫发育成的幼虫相比，生长速度降低，滤过率降低。较低的过滤率解释了观察到的早期幼虫饥饿对减少幼体生长的潜在影响。幼虫寿命后期的饥饿导致其变态时幼虫的壳长，脂质含量和幼虫RNA：DNA比例降低；由这些幼虫发育而来的幼虫在壳长的增长和总有机碳含量方面表现不佳，这是因为在变态时“能量储备的消耗”。这项研究的结果表明，如果幼虫在幼虫生命的不同阶段受到压力，即使在相同的时间段（2天）内暴露于相同种类的幼虫压力（饥饿），也会通过不同的机制引起不同的幼体反应。 。

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