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中街山列岛海域厚壳贻贝生物学特征及生长规律

梁君,虞宝存,毕远新,王伟定**   

  1. (浙江省海洋水产研究所, 农业部重点渔场渔业资源科学观测实验站, 浙江省海洋渔业资源可持续利用技术研究重点
    实验室, 浙江舟山 316021)
  • 出版日期:2015-02-07 发布日期:2015-02-07

The biological characteristics and growth patterns of Mytilus coruscus in the waters of Zhongjieshan Islands.

LIANG Jun, YU Bao-cun, BI Yuan-xin, WANG Wei-ding**   

  1. (Marine Fisheries Research Institute of Zhejiang Province, Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, MOA, Key Laboratory of Sustainable Utilization of Technology Research for Fisheries Resources of Zhejiang Province, Zhoushan 316021, Zhejiang, China)
  • Online:2015-02-07 Published:2015-02-07

摘要: 根据2013年4月—2014年2月厚壳贻贝Ⅰ龄个体跟踪调查和2013年8—12月Ⅱ龄个体取样调查数据,利用Taylor公式、线性函数和Von Bertalanffy生长方程对中街山列岛海域厚壳贻贝生物学特征及生长规律进行了分析。结果表明:雌雄样本间壳长、壳高、壳宽、体重、贝壳重和软组织湿重差异不显著;壳长与壳高、壳宽之间有极显著的线性正相关关系,壳长与体重、贝壳重、软组织湿重之间有极显著幂函数关系;壳长生长方程为Lt=87.48(1-e-0.348(t+0.913)),体重生长方程为Wt=79.51(1-e-0.348(t+0.913))3;8—10月是厚壳贻贝生长旺季,8月下旬为性成熟拐点,建议厚壳贻贝春季苗的最佳收获期为10月中旬。

关键词: 高寒草甸, 多样性指数, 放牧干扰

Abstract: Mytilus coruscus is an economic mollusc and good object for artificial propagation and culture, but there are very few reports about its biological characteristics so far. Based on the data of tracking survey of one-year-old M. coruscus from April 2013 to February 2014 and of sampling survey of two-year-old M. coruscus during August to December 2013, Taylor formula, linear function and Von Bertalanffy growth equation were used to analyze their biological characteristics and growth patterns in the waters of Zhongjieshan Islands. The result showed that there were no obvious differences in shell length, shell height, shell width, body weight, shell weight and wet weight of soft tissues between male and female individuals. There were significant positive linear correlations between shell length and shell height and shell width. Moreover, there were significant power function relationships between shell length and body weight, shell weight, and wet weight of soft tissues. The growth equations of shell length and body weight were as follows: Lt=87.48(1-e-0.348(t+0.913)) and Wt=79.51(1-e-0.348(t+0.913)) 3-respectively. The period between August and October was considered to be the rapid growth season, and inflection point of sexual maturity of M. coruscus was in late August. It was proposed that midOctober was the best harvest season for spring seeding.

Key words: grazing disturbance, alpine meadow, diversity index