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首页> 外文期刊>Marine ecology >Seasonal changes in the biochemical composition of females and offspring of red squat lobster, Pleuroncodes monodon (Decapoda, Munididae), from the Southeastern Pacific
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Seasonal changes in the biochemical composition of females and offspring of red squat lobster, Pleuroncodes monodon (Decapoda, Munididae), from the Southeastern Pacific

机译：东南太平洋红蹲龙虾（Pleuroncodes monodon）的雌性和后代的生化成分的季节性变化

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摘要

Pleuroncodes monodon is an important fishery resource and key species from the Southeastern Pacific. During its prolonged reproductive period (from February to December), ovigerous females are exposed to seasonal variation in environmental factors (e.g. temperature and food availability), with higher levels of these environmental parameters during summer and lower in winter, and must adjust their biochemistry to ensure their own survival and that of their embryos. The aim of this study was to analyse seasonal changes in the biochemical composition of ovigerous females and their eggs. The data show that the content of lipids, proteins and organic matter in the hepatopancreases of females was significantly higher in winter than in summer. Similarly, the lipid content of the eggs was significantly higher in winter than in summer, yet the protein content of the eggs had the opposite pattern with greater values found in summer. Consistent with the 'reproductive energetic model', the initial and final energy produced by the hepatopancreas showed significant seasonal variations, whereas female investment in egg production (in absolute values) did not show significant seasonal differences. The seasonal differences observed in the biochemistry, organic matter and energy content of the female hepatopancreases may be related to the storage of energy for growth and reproduction. Furthermore, the seasonal variation in the content of lipids, proteins and energy in eggs is likely related to embryogenesis and larval hatching in function with environmental conditions. Seasonal variation in the biochemical composition of P.monodon has direct effects on the marine food web and also upon fisheries.
机译：斑节对虾是东南太平洋的重要渔业资源和重要物种。在长期繁殖期（从2月到12月），雌雄异体的雌性受到环境因素（例如温度和食物供应）的季节性变化的影响，夏季的这些环境参数水平较高，而冬季的则较低，因此必须将其生化调整为确保自己和胚胎的生存。这项研究的目的是分析雌雄同体的卵及其卵的生化成分的季节性变化。数据表明，女性肝脂肪中脂质，蛋白质和有机物的含量在冬季明显高于夏季。同样，冬季鸡蛋的脂质含量明显高于夏季，但鸡蛋的蛋白质含量却相反，夏季却更高。与“生殖能量模型​​”一致，肝胰腺产生的初始能量和最终能量显示出明显的季节性变化，而女性对鸡蛋生产的投资（以绝对值计）没有显示出明显的季节性差异。雌性肝脂肪增加的生物化学，有机质和能量含量中观察到的季节性差异可能与生长和繁殖所需的能量储存有关。此外，鸡蛋中脂质，蛋白质和能量含量的季节性变化可能与环境条件下胚胎发生和幼虫孵化有关。斑节对虾生化成分的季节性变化直接影响海洋食物网和渔业。

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