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首页> 外文期刊>Marine biology >Pre-hatching development in the intertidal zone negatively affects juvenile survival and physiology in the muricid gastropod Acanthina monodon
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Pre-hatching development in the intertidal zone negatively affects juvenile survival and physiology in the muricid gastropod Acanthina monodon

机译：潮间带孵化前的发育对鼠腹足纲Acanthina monodon的幼体存活和生理产生负面影响

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Encapsulated development in the intertidal environment can potentially expose developing embryos to environmental stresses, particularly during low tides. Such stresses can affect juvenile performance after hatching. Capsules-containing advanced pre-hatching stages of the snail Acanthina monodon were collected during July-August 2017 from rocks in the intertidal and subtidal environments along the coast of Valdivia, Chile (Calfuco beach, 39A degrees 79'27aEuro(3)S; 73A degrees 39'27aEuro(3)W) and brought to the laboratory, where hatching of the juveniles took place. The number of embryos per capsule in relationship to capsule size was determined for capsules from the two environments, as were the juvenile hatching size and the number of juveniles hatching from each capsule. Survival and respiratory performance were also monitored for juveniles from the two locations. Neither embryonic packaging nor the number of juveniles hatched per capsule, nor the hatching size of the juveniles evidenced any differences for capsules that were collected in the two different environments. In general, juvenile survival was low ( 10% at 4 week post-hatching) regardless of capsule origin. However, survival and standardized rates of oxygen consumption were substantially higher for juveniles from subtidal capsules. This suggests that environmental stressors had a detrimental effect on embryos from intertidal capsules.
机译：潮间环境中的囊状发育有可能使发育中的胚胎承受环境压力，特别是在退潮期间。这样的压力会影响孵化后的幼体性能。 2017年7月至8月期间，从智利瓦尔迪维亚海岸的潮间带和潮间带环境中的岩石中收集了螺A Acanthina monodon的含胶囊的高级孵化前阶段（Calfuco海滩，39A度79'27aEuro（3）S; 73A度39'27aEuro（3）W），并带到实验室进行孵化。确定来自两种环境的胶囊的每个胶囊的胚数与胶囊大小的关系，以及幼体孵化的大小和每个胶囊中孵化的幼鱼的数目。还监测了两个地点的少年的生存和呼吸性能。既没有胚胎包装，也没有每个胶囊孵化的幼虫数量，也不是孵化的幼体的大小证明了在两种不同环境下收集的胶囊的任何差异。通常，无论胶囊起源如何，幼虫的存活率都很低（孵化后4周<10％）。然而，潮下囊的幼虫的存活率和标准耗氧率要高得多。这表明环境应激源对潮间带胶囊的胚胎有不利影响。

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