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首页> 外文期刊>ICES Journal of Marine Science >Population biology of monkfish Lophius americanus
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Population biology of monkfish Lophius americanus

机译:美洲扁Lo的种群生物学

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This paper provides an overview of the biology of monkfish in US waters of the Northwest Atlantic Ocean using data from resource surveys spanning the period 1948-2007. Monkfish exhibited seasonal onshore-offshore shifts in distribution, migrated out of the southern Mid-Atlantic Bight (MAB) in mid-spring, and re-appeared there in autumn. Sex ratios at length for fish 40-65-cm long were skewed towards males in the southern MAB, but approximated unity elsewhere, suggesting that a portion of the population resides outside sampled areas. Growth was linear at 9.9 cm year~(-1) and did not differ by region or sex. Maximum observed size was 138 cm for females and 85 cm for males. Length at 50% maturity for males was 35.6 cm (4.1 years old) in the north and 37.9 cm (4.3 years old) in the south; for females 38.8 cm (4.6 years old) in the north and 43.8 cm (4.9 years old) in the south. Ripe females were found in shallow ( < 50 m) and deep ( > 200 m) water in the south, and in shallow water ( < 50 m) in the north.
机译:本文使用从1948-2007年间的资源调查数据,概述了西北大西洋美国水域中的安康鱼生物学。安康鱼表现出季节性的陆上-近海分布变化,于春季中旬迁出南部大西洋中部海岸线(MAB),并于秋季重新出现。在人与生物圈计划的南部,长40-65厘米长的鱼的性别比偏向于雄性,但在其他地方近似于男性,这表明一部分人口居住在抽样区域之外。在9.9 cm年〜(-1)处呈线性增长,并且按地区或性别无差异。女性的最大观察尺寸为138厘米,男性为85厘米。男性50%成熟时的长度在北部为35.6厘米(4.1岁),在南部为37.9厘米(4.3岁)。北部为38.8厘米(4.6岁),南部为43.8厘米(4.9岁)的女性。在南部的浅水(<50 m)和深水(> 200 m)中发现了成熟的雌性,在北部的浅水中发现了成熟的雌性(<50 m)。

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