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根据2010年7月至2011年6月对浙南沿岸张网渔获物采样调查资料,研究分析张网渔获物优势种类组成及季节分布。结果表明,在全年取样调查中,共鉴定游泳生物97种。优势种类为中国毛虾、日本毛虾、龙头鱼、细螯虾、带鱼,双斑虫寻、刀鲚以及小公鱼属、虎鱼科、口虾蛄属、管鞭虾属、仿对虾属、鼓虾属等12个类群。毛虾全年均有出现,在一年中出现旺季有两个,一个是3月至5月,再一个是7月至8月,各月样品中毛虾重量占比分别为41.5%、33.1%、36.4%、43.1%与77.2%。龙头鱼出现旺季主要在9月至10月,各月样品中重量占比分别为25.5%与39.7%,平均体重分别为1.2 g与1.1 g。带鱼出现旺季在6月至9月,各月样品中重量占比分别为3.2%、3.6%、1.4%与2.6%,平均体重分别为1.1 g、2.2g、1.8 g与3.9 g。口虾蛄出现旺季主要在9月至10月,各月样品中重量占比分别为10.5%与9.2%,平均体重分别为3.5 g与4.8 g。
According to the sampling survey data of Zhang net catches from the south of Zhejiang in July 2010 to June 2011, the dominant species composition and seasonal distribution of the net catches were studied. The results showed that in the annual sampling survey, a total of 97 species of swimming organisms were identified. The dominant species are Chinese shrimp, Japanese shrimp, fishes, crayfish, octopus, locusts, Dictyostella, Hylobates, Genus, shrimp genus and other 12 groups. Gross shrimp appeared all year round with two peak season occurrences in one year, one from March to May and the other from July to August. The gross weight of the shrimp in each month was 41.5% and 33.1 %, 36.4%, 43.1% and 77.2%. Faucet appeared in the peak season from September to October, the monthly weight of the samples accounted for 25.5% and 39.7%, respectively, the average body weight of 1.2 g and 1.1 g. The highest frequency of octopus occurred in June to September from June to September, with the monthly weight of samples accounting for 3.2%, 3.6%, 1.4% and 2.6%, respectively, and the average weights were 1.1 g, 2.2g, 1.8 g and 3.9 g respectively. Mouth 虾 蛄 peak season appeared mainly in September to October, the sample weight of each month accounted for 10.5% and 9.2%, respectively, the average body weight were 3.5 g and 4.8 g.