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STATE OF THE STURGEON STOCKS IN THE DANUBE RIVER

机译:丹布河的ST鱼状态

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摘要

Approximately 3/4 of the world sturgeon catches consist of species Huso huso Linnaeus, 1758 (beluga), Acipenser gueldenstaedti Brandt, 1833 (osetra) and Acipenser stellatus Pallas, 1771 (sevruga), and distribution and fishing of these fish species are confined to the hydrographic basins of Caspian Sea, Sea of Azov and the Black Sea, operated by the states of CIS, Iran, Romania, Bulgaria, Turkey, Ukraine and Serbia. Annual sturgeon catches have declined recently in most countries exploiting these fish stocks, although it is widely recognised that it is impossible to assess the quantity sold on the black market. Despite errors of assessment of real catch, a general trend of rapid decline of breeding stock is observed. Regarding the progeny resulting from natural spawning, the data and observations of research fisheries have revealed the following aspects: in the catches were recorded juvenile specimens of Acipenser stellatus (sevruga) with lengths between 12-20 cm, juvenile specimens of Huso huso (20-25 cm), and Acipenser gueldenstaedti (12-18 cm); the percentage of the total number of juvenile individuals caught, Acipenser stellatus is 70%, of Huso huso - 29% and of Acipenser gueldenstaedti - 1%.
机译:世界st鱼的大约3/4捕捞种类包括Huso huso Linnaeus(1758(beluga)),Acipenser gueldenstaedti Brandt(1833)(osetra)和Acipenser stellatus Pallas(1771(sevruga))种类,这些鱼类的分布和捕捞仅限于里海,亚速海和黑海的水文盆地,由独联体,伊朗,罗马尼亚,保加利亚,土耳其,乌克兰和塞尔维亚等州经营。尽管人们普遍认为不可能评估在黑市上出售的数量,但在大多数利用这些鱼类资源的国家中,每年st鱼的捕捞量最近有所下降。尽管评估实际捕捞量有误,但观察到种畜迅速减少的总体趋势。关于自然产卵的后代,研究渔业的数据和观察结果揭示了以下方面:在渔获物中记录了长度在12至20厘米之间的中华st(scipruga)幼鱼,胡索(20- 25厘米)和Acipenser gueldenstaedti(12-18厘米);捕捞的青少年总数中,星状cip占70%,胡索人-29%,古氏den-1%。

著录项

  • 来源
    《Journal of Environmental Protection and Ecology》 |2011年第4期|p.1746-1751|共6页
  • 作者单位

    Institute of Research and Development for Aquatic Ecology, Fishing and Aquaculture, 54 Portului Street, 800 211 Galati, Romania;

    'Dunarea de Jos' University of Galati, 47 Domneasca Street, 800 008 Galati,Romania;

    Institute of Research and Development for Aquatic Ecology, Fishing and Aquaculture, 54 Portului Street, 800 211 Galati, Romania;

    'Dunarea de Jos' University of Galati, 47 Domneasca Street, 800 008 Galati,Romania;

    Institute of Research and Development for Aquatic Ecology, Fishing and Aquaculture, 54 Portului Street, 800 211 Galati, Romania;

    Institute of Research and Development for Aquatic Ecology, Fishing and Aquaculture, 54 Portului Street, 800 211 Galati, Romania;

    Institute of Research and Development for Aquatic Ecology, Fishing and Aquaculture, 54 Portului Street, 800 211 Galati, Romania;

    'Dunarea de Jos' University of Galati, 47 Domneasca Street, 800 008 Galati,Romania;

    'Dunarea de Jos' University of Galati, 47 Domneasca Street, 800 008 Galati,Romania;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    sturgeon; migration; stocks; catches;

    机译:鲟;移民;库存;渔获;

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