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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Maternally derived nutrients influence fatty acid composition and predator evasion behavior of larval southern flounder, Paralichthys lethostigma
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Maternally derived nutrients influence fatty acid composition and predator evasion behavior of larval southern flounder, Paralichthys lethostigma

机译：母体衍生的营养素会影响幼虫南方群体的脂肪酸组成和捕食者逃避行为，Paralichthys lethostigma

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摘要

Predation is the main source of mortality during the larval stage of marine fishes. Previous work has shown a correlation between measures of performance related to predator evasion and fatty acid (FA) composition of marine fish larvae, and that the latter can be influenced by both larval diet and maternally-derived nutrition (yolk). This study aimed to determine the relationships between FA composition of eggs, FA composition of the larval body, and predator evasion performance of southern flounder, Paralichthys lethostigma. Larvae hatched from eggs differing in FA composition were reared under common garden conditions to 15 and 35 days post-hatching (dph) when measurements of routine swimming and responsiveness to a simulated looming predator were made. Larval responsiveness to the predatory stimulus was positively correlated with the FA ratios DHA: ARA and DHA: EPA in whole larvae at 15 and 35 dph, respectively. The amount of omega-3 docosapentaenoic acid (22:5(n-3)) in the egg was correlated, though not significantly, with the amount of DHA in the larval body at 15 dph (r = -0.51, P = 0.052), and was significantly correlated with the amount of DHA in the larval body at 35 dph (r = -0.62, P = 0.031). These results provide evidence of metabolic programming in southern flounder, and suggest that maternally derived nutrients indirectly influence larval mortality in the wild.
机译：捕食是海洋鱼类幼虫阶段的死亡率的主要来源。以前的工作表明，与捕食者逃避和脂肪酸（FA）的海洋鱼类幼虫组成有关的性能之间的相关性，并且后者可能受到幼虫饮食和潜水营养营养（蛋黄）的影响。本研究旨在确定鸡蛋，幼虫体内的成分组成，南方群体的捕食者逃避表现，Paralichthys lethostigma。当常见的庭院条件下，在常见的庭院条件下饲养鸡蛋的幼虫，在孵化后的常规游泳和对模拟的迫在眉睫的捕食者进行响应时孵化到15和35天。对掠夺性刺激的幼虫反应性与FA比DHA：ARA和DHA：全部幼虫的EPA分别呈正相关，分别为15％和35分钟。卵中ω-3二胞酰氯（22：5（N-3））的量相关，但没有显着，在15pph的幼虫体中的DHA的量（r = -0.51，p = 0.052） ，并且与35分DPH（R = -0.62，P = 0.031）显着与幼虫体中DHA的量相关。这些结果提供了南方比目鱼的代谢规划的证据，并表明母体衍生的营养素间接影响野生幼虫死亡率。

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