中街山列岛海洋保护区棘头梅童鱼生物学特征与资源密度的季节变化  

Seasonal Variations of the Biological Characteristics and Abundance Density of Collichthys lucidus in Zhongjieshan Islands Marine Protected Area

作　　者：张洪亮[1] 王洋[1] 梁君[1] 贺舟挺[1] 周永东[1] 

机构地区：[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　　处：《浙江海洋学院学报（自然科学版）》2015年第5期407-410,共4页Journal of Zhejiang Ocean University(Natural Science Edition)

基　　金：浙江省海域海岛管理利用项目(浙海渔计[2013]149号);浙江省渔业资源增殖放流项目(浙财农[2014]277号);中央财政渔业资源保护项目(浙财农[2015]31号);东海区渔业资源和生态调查项目(东渔政[2013]144号与[2014]75号)

摘　　要：根据2012年冬季(2月)、春季(5月)、夏季(8月)与秋季(11月)进行的共4个航次的底拖网渔业资源调查资料,对中街山列岛海洋保护区棘头梅童鱼的生物学特征与资源密度进行了分析。结果表明:四季中,夏季存在明显的幼鱼体长组与体重组;摄食强度以冬季为最低;性腺成熟度春季达最高;重量密度与尾数密度以夏季为最高,春季最低,且夏季与春季间均存在显著性差异(P<0.05),这应与春季卵孵化后的幼体在夏季已能被底拖网所捕获有关;重量密度与平均底盐呈二次曲线相关(P<0.05)。The biological characteristics and abundance density of CoUichthys lucidus in Zhongjieshan Islands Marine Protected Area were analyzed based on the data from the investigations in winter （February）, el in winter was the lowest. The gonadal maturity in spring was the highest. Both the weight density and indi- vidual density were highest in summer and lowest in spring, due to the juvenile fishes bone in spring fed up and could be caught by bottom trawls in summer. The weight density in summer was specifically different withthat in spring （P〈0.05）, and similar to the individual density（P〈0.05）. The relationship between the weight den- sity and sea bottom water salinity can be denoted by binary curve （P〈0.05）.

关 键 词：中街山列岛 棘头梅童鱼 摄食强度 性腺成熟度 资源密度 

分 类 号：S932.4[农业科学—渔业资源]