【摘要】 根据2009年5～10月底的调查和统计资料,对在渤海增殖放流的中国对虾的分布、生长、资源量以及捕捞生产情况进行了调查和研究。结果显示,6月中旬放流的中国对虾多集中在水深1～2m以内和河口附近的浅水区,到7月下旬,分布水深为5～18m,密集分布区在10～15m,之后一直生活在较深水域。6月中旬,中国对虾平均体重为2.5g;7月上、中旬,平均体重为7.0g;7月下旬,平均体重为20.0g;7月底、8月初,平均体重为27.0g;8月中旬,平均体重为36.0g;9月上旬,平均体重为41.0g。8月上、中旬渤海中国对虾的资源量为1 665t;10月下旬,生产捕捞后的资源量减少为137t。8月份中国对虾的资源分布以渤海湾最高,为129.9ind/haul.h,其次为莱州湾,为7.8ind/haul.h,再次是辽东湾,为0.3ind/haul.h,渤海中部最低,为0.05ind/haul.h。2009年渤海共放流中国对虾202641万尾,据初步统计估算,截止10月中旬共捕捞中国对虾2377t,总回捕率为2.8%。更多还原

【Abstract】 Growth,distribution and abundance of released Fenneropenaeus orientalis were studied based on the data collected in the Bohai Sea from May to October in 2009.The collection and statistics of total yield of F.orientalis was carried out by the provincial institutes at the end of October.Results showed that the released F.orientalis mainly distributed in the shallow water(1~2 m) and estuary areas in mid June,and distributed at the depth of 5~18 m at the end of July,especially 10~15 m.The mean weight of F.orientalis were 2.5 g in mid June,and reached 7.0 g from the beginning to mid July,20.0 g from the end of July,27.0 g from the end of July to the beginning of August,36.0 g in mid August and 41.0 g at the beginning of September.Based upon the survey data,the estimated biomass of F.orientalis in the Bohai Sea was 1 665 tons in August and reduced to 137 tons in October after being captured.The abundance of F.orientalis in the bays of the Bohai Sea was 129.9,7.8,0.3,and 0.05 ind/net·h respectively,which were positively related to the released numbers.Based on the collection and statistical data,the total yield of F.orientalis in the Bohai Sea was 2 377 tons and the estimated recapture ratio was 2.8% in 2009.更多还原