首页> 外文期刊>Russian journal of marine biology >Egg Size and Formation of the Geographical Range in Thysanoessa inermis (Kroyer, 1846) (Crustacea: Euphausiacea) in the Norwegian and Barents Seas
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Egg Size and Formation of the Geographical Range in Thysanoessa inermis (Kroyer, 1846) (Crustacea: Euphausiacea) in the Norwegian and Barents Seas

机译:挪威和巴伦支海Thysanoessa inermis(Kroyer,1846)(甲壳纲:Euphausiacea)的卵大小和地理范围的形成

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摘要

Using materials on the euphausiacean Thysanoessa inermis collected in the Norwegian and Barents seas (from 60°N to 73°N) we studied the variability of size characteristics in the eggs (diameter of embryos and egg capsules and the width of the perivitelline space) and their correlations with water temperature and salinity. The size of embryos showed almost no variability irrespective of the location of the sampling site and the water temperature and salinity; the perivitelline space performs a protective function, and its width showed a tendency to decrease with increasing water temperature and salinity. The similarities in the size of embryos in T. inermis populations thousands of kilometers away from each other might be explained, first, by the relatively small age of the populations (the age of the population from the Barents Sea did not exceed 6000-7000 years) and second, by movement of the crustaceans with currents from the Norwegian Sea to the Barents Sea.
机译:使用从挪威和巴伦支海(从60°N到73°N)收集的紫罗兰色泛紫苏属植物的材料,我们研究了卵大小特征的变异性(胚胎和卵囊的直径以及卵白质间隙的宽度),以及它们与水温和盐度的关系。胚胎的大小几乎没有变化,而与采样点的位置以及水温和盐度无关。卵周空间起保护作用,其宽度随水温和盐度的增加而呈减小趋势。首先,可以通过相对较小的种群年龄(来自巴伦支海的种群年龄不超过6000-7000年)来解释无定形毛虫种群中距彼此数千公里的胚胎大小的相似性。 ),其次,甲壳类动物从挪威海流到巴伦支海。

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