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首页> 外文期刊>Oceanology >The Impact of Environmental Conditions on the Reproduction of the Sea Urchin Strongylocentrotus pallidus(Sars)off the Primor'e Coast,Japan Sea
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The Impact of Environmental Conditions on the Reproduction of the Sea Urchin Strongylocentrotus pallidus(Sars)off the Primor'e Coast,Japan Sea

机译：环境条件对日本海滨海沿岸海胆（Sars）海胆繁殖的影响

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Reproduction of the pale sea urchin Strongylocentrotus pallidus was studied off the Primor'e coast(the northwestern part of the Japan Sea)at sea depths from 30 to 550 m.The area studied is conventionally divided into three parts with different environmental conditions.The southern part was surveyed in late May and the central and northern parts were studied early in June and in the middle June,respectively.Using the condition of the gonads of sea urchins as an indicator,it was found that,in the southern subarea,the mass spawning proceeded at the end of May-June;in the central part it occurred in June,and in the northern part it lasted from the middle of May to the middle June.It should be noted that,in the south,the spawning was more extended in time,whereas,in the north,the duration of the spawning was the shortest.Sea urchins with gonads at the stages of growing and maturing were hauled from the places with an excess of silicate within the near-bottom layer of the sea due to the mineralization of detritus,namely,diatoms,whereas the urchins with post-spawned gonads were sampled from the places with a deficit of silicates.From this it follows that the rate of maturing and the time of spawning of the sea urchins Strongylocentrotus pallidus depend on the detritus sedimentation on the sea bottom in the course of the spring bloom.In particular,the early spawning in the northern area was related to the early bloom caused by the saline stratification of the northern waters of the Japan Sea.The time of the mass spawning of the pale sea urchins off the Primor'e coast is primarily determined by the physiological response of adult individuals to the seasonal changes in their own forage base rather than by evolutionary adaptation of the population to the seasonal changes in the forage base of their larvae.
机译：淡海顽童（Strongylocentrotus pallidus）的繁殖是在离原住民海岸（日本海西北部）30至550 m的海深处进行的。在5月下旬进行了调查，在6月初和6月中旬分别对中部和北部进行了研究。以海胆性腺的性腺状况为指标，发现在南部分区产卵在5月至6月底进行;在中部发生在6月，在北部持续从5月中旬到6月中旬。应该注意的是，在南部，产卵更多随着时间的延长，在北方，产卵的时间最短。在海底近海层中，从生长有大量硅酸盐的地方拖出了带有性腺的海胆。到我的碎屑的分解，即硅藻，而从缺乏硅酸盐的地方采样了带有产卵后性腺的海胆。由此得出，海胆Strongylocentrotus pallidus的成熟速度和产卵时间取决于春季开花过程中海底碎屑沉积。特别是北部地区的早期产卵与日本海北部水域的盐分分层引起的早期开花有关。滨海边疆区浅海顽童的数量主要取决于成年个体对其自身饲草基础的季节性变化的生理反应，而不是取决于种群对幼虫饲草基础的季节性变化的进化适应。

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