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首页> 外文期刊>Russian journal of marine biology >The Spatial Distribution, Growth, and Reproduction of the Bivalve Macoma calcarea (Gmelin, 1791) off the Novaya Zemlya Coast
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The Spatial Distribution, Growth, and Reproduction of the Bivalve Macoma calcarea (Gmelin, 1791) off the Novaya Zemlya Coast

机译：诺亚Zemlya海岸的北部双抗体的空间分布，生长和繁殖，生长和生殖，1791年）

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摘要

The population and biological characteristics of the bivalve mollusk Macoma calcarea (Gmelin, 1791) off the Novaya Zemlya Archipelago, eastern Barents Sea, are considered. The biomass of Macoma clams in the study area varied from 3.9 to 350.6 g/m(2); the population density varied from 13.3 to 196.6 ind./m(2). It was shown that the biomass and population density of clams do not depend on the depth and near-bottom water temperature; the size structures and growth rates were similar at different depths. The life span was found to differ significantly between clams that lived at depths shallower than 100 m (17 years) and deeper (26 years). At depths shallower than 100 m, aggregations of this species consisted mainly of juveniles (up to 4 mm); at the stations with greater depths, both juveniles and individuals with a shell length of 14.9 mm were found in abundance. Individuals of M. calcarea reach sexual maturity at an age of 3-4 yr, with a shell length of over 7.5 mm. At the stations with greater depths, there were significantly more mature clams than immature ones, and more males than females. Three stages of gametogenesis were identified in the examined females. The size of mature, ready to be spawned oocytes was 175 mu m.
机译：考虑了Novaya Zemlya Archipelago，东部偏见的人口和生物学特性，诺亚·Zemlya群岛，东部的小须群岛，东部的小须群岛。研究区中的生物质蛤的生物量在3.9至350.6克/米（2）之间变化。人口密度从13.3到196.6 Ind./m（2）变化。结果表明，蛤蜊的生物质和种群密度不依赖于深度和近底水温度;尺寸结构和生长速率在不同的深度相似。发现寿命有显着不同，在深度浅的蛤蜊比100米（17岁）和更深（26岁）之间。在深度浅，比100米浅，这个物种的聚集主要由青少年（最多4毫米）组成;在具有更深入的地区，在丰度中发现了壳体长度为14.9毫米的幼稚和个体。 M. Calcarea的个体以3-4岁的年龄达到性成熟，壳体长度超过7.5毫米。在深度更深的地站上，比未成熟的蛤蜊显着更具成熟的蛤蜊，比女性更多的雄性。在检查的女性中鉴定了三个阶段的配子发生。成熟的大小，准备产生卵母细胞是175亩。

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