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首页> 外文期刊>Russian journal of marine biology >The Period of Occurrence, Density, and Distribution of Larvae of Three Commercial Crab Species in Peter the Great Bay, Sea of Japan
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The Period of Occurrence, Density, and Distribution of Larvae of Three Commercial Crab Species in Peter the Great Bay, Sea of Japan

机译：日本海彼德大湾的三种商品蟹物种的幼虫的发生，密度和分布时期

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摘要

Based on materials from plankton surveys carried out in 2004-2009, the period of occurrence, density, and distribution of larvae of three commercial species of crabs in the Peter the Great bay and adjacent areas of Sea of Japan were studied. The larvae of the horsehair crab Erimacrus isenbeckii (Brandt, 1848) occurred in the plankton from mid-March to early June, within the range of water temperature from -1 to 10.8℃. The larvae of the helmet crab Telmessus cheiragonus (Tilesius, 1812) appeared in the plankton in mid-April and occurred to the end of June within the temperature range from 2.8 to 13.0℃. The larvae of the snow crab Chionoecetes opilio (O. Fabricius, 1788) appeared in the plankton in mid-April as well, but some individuals sporadically occurred until early August. All the species of crabs produced one generation of larvae for their reproduction season. The terms of larval stay in plankton depended on water temperature and the duration of the pelagic period increased in colder years. In that area, the larvae of C. opilio were the most abundant (up to 41 ind./m3) and the zoea density of horsehair and helmet crabs was significantly lower (no more than 2 ind./m3). The larvae of C. opilio occurred over the entire area of the Peter the Great bay; the greatest aggregations of their early stages were observed in its southwestern open part. The maximum density of E. isenbeckii zoea was recorded in the south of the Amursky bay and in the Posyet bay. Individual larvae of T. cheiragonus occurred in the Posyet bay and in the southern part of the Amursky and Ussuriisky bays. The late-stage larvae of all crab species were concentrated in areas of the coastal circulation.
机译：根据2004年至2009年进行的浮游生物调查的资料，研究了在彼得大帝湾和日本海附近地区三种商品蟹的幼体的发生时期，密度和分布。马毛蟹Erimacrus isenbeckii（Brandt，1848年）的幼虫发生在3月中旬至6月初的浮游生物中，水温为-1至10.8℃。头盔蟹Telmessus cheiragonus（Tilesius，1812）的幼虫出现在4月中旬的浮游生物中，并发生在6月底，温度范围为2.8至13.0℃。雪蟹Chionoecetes opilio（O. Fabricius，1788）的幼虫也于4月中旬出现在浮游生物中，但一些个体零星地发生到8月初。所有种类的螃蟹在繁殖季节都会产生一代幼虫。浮游生物中的幼体停留时间取决于水温，在较冷的年份中，浮游时期的持续时间增加。在该区域中，鸦片梭菌的幼虫最丰富（高达41 ind./m3），马毛和头盔蟹的动物区系密度显着较低（不超过2 ind./m3）。 C. opilio的幼虫遍布于彼得大帝海湾的整个区域。在其西南开放部分观察到了其早期阶段的最大聚集。在Amursky海湾的南部和Posyet海湾记录到了伊森贝克菌的最大密度。 T. cheiragonus的幼虫出现在Posyet海湾以及Amursky和Ussuriisky海湾的南部。所有蟹类的后期幼虫都集中在沿海环流地区。

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