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首页> 外文期刊>Oceanologia >Gonad maturity in female Chinese mitten crab Eriocheir sinensis from the southern Baltic Sea - the first description of ovigerous females and the embryo developmental stage
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Gonad maturity in female Chinese mitten crab Eriocheir sinensis from the southern Baltic Sea - the first description of ovigerous females and the embryo developmental stage

机译：波罗的海南部中华绒螯蟹中华绒螯蟹的性腺成熟-卵生雌性的第一个描述和胚胎发育阶段

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摘要

This paper describes for the first time the gonad maturity stage of Eriocheir sinensis females (carapace width 55.20-78.10mm) collected in the autumns and winters of 2005-2012 in the Gulf of Gdansk and Vistula Lagoon (southern Baltic Sea). Seventeen females had gonads in the penultimate stage, which indicates that spawning would shortly take place. Four other females had gonads in the last stage, which means they were already carrying eggs. These accounted, on average, for 17.9 +/- 2.9% of female weight and were in the 3rd and 4th embryo developmental stage. The results show that the low salinity of southern Baltic Sea (@? 7 PSU) permits mating and fertilization as well as embryo development in E. sinensis. It is still not clear, whether such a salinity level will enable hatching and the complete larval cycle.
机译：本文首次描述了2005-2012年秋冬季在格但斯克湾和维斯杜拉泻湖（波罗的海南部）采集的中华绒螯蟹（甲壳宽度55.20-78.10mm）的性腺成熟期。倒数第二阶段有17只雌性生殖腺，这表明将很快发生产卵。在最后阶段，另外四只雌性腺有性腺，这意味着她们已经在携带卵。这些平均占女性体重的17.9 +/- 2.9％，处于第3和第4胚胎发育阶段。结果表明，波罗的海南部的低盐度（@？7 PSU）允许中华绒螯蟹的交配和受精以及胚胎发育。这样的盐度水平是否将使孵化和整个幼体周期尚不清楚。

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