乳山湾滩涂贝类养殖容量的估算
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Estimation of carrying capacity for shellfish in Rushan Bay
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    摘要:

    通过计算单位面积的浮游植物和底栖微藻生产的有机碳供应量、单位面积浮游动物和其它底栖生物的生物量及其对有机碳的需求量,首次对乳山湾滩涂贝类(以菲律宾蛤仔为代表,后文简称蛤仔)在不同养殖季节的养殖容量进行了估算。结果显示,不同体长范围内的蛤仔养殖容量均表现为10月份最大,6月份次之,8月份最小。壳长在1.5~2.5cm范围内的蛤仔的平均养殖容量为2692ind.m-2,目前乳山湾蛤仔实际养殖密度为1080 ind.m-2,该体长范围内的蛤仔养殖密度尚有较大发展余地;壳长在2.5~3.5cm范围内的蛤仔的平均养殖容量为1157ind.m-2,该体长范围内的蛤仔养殖密度基本接近其实际养殖密度;壳长大于3.5cm的蛤仔平均养殖容量为2692ind.m-2,该体长范围内的蛤仔养殖密度已经超过其最佳养殖密度。

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    Ruditapes philippinarum, which is naturally distributed along the coast of the Pacific and India Oceans, is one of the most popular shellfish cultured in China and many parts of the world. China is the world’s largest producer of Ruditapes philippinarum. Some inappropriate ways of aquaculture, however, have resulted in the worseness of environment, which would restrict and endanger the development of aquaculture. The study of carrying capacity may resolve the problem of ecosystem by overstocking, so the study on carrying capacity of cultured tidal shellfish is very necessary. The carrying capacity for shellfish Ruditapes philippinarum that cultured in the Rushan Bay was estimated by calculating the demand for and the supply of organic carbon produced by primary production. Ingestion rate of filter-ingestion animals and other field data were used for model validation. The results obtained showed that the highest carrying capacity of the bay for the Ruditapes philippinarum occurred in October and the lowest in August in tidal cultured areas among different shell length. The average carrying capacity of the bay for the Ruditapes philippinarum with the shell length of 1.5-2.5cm was 2692ind/m2 and still in suitable opportunity, the shell length of 2.5-3.5cm was 1157 ind/m2 and near the actual culture density, and the shell length above 3.5cm was 2692 ind/m2 and over the best culture density.

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尹晖,孙 耀,徐林梅,陈碧娟,姜守轩,孟 伟,宋建中.乳山湾滩涂贝类养殖容量的估算[J].水产学报,2007,31(5):669~674

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  • 收稿日期:2007-06-10
  • 最后修改日期:2007-06-10
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  • 在线发布日期: 2007-09-05
  • 出版日期: 2007-09-15
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