2004～2010年夏季杭州湾鱼类浮游生物种类组成与数量分布  

Ichthyoplankton species composition and distribution in Hangzhou Bay in summer during 2004～2010

作　　者：魏永杰[1] 王晓波[1] 张海波[1] 刘莲[1] 蔡燕红[1] 

机构地区：[1]国家海洋局宁波海洋环境监测中心站,浙江宁波315012

出　　处：《台湾海峡》2012年第4期501-508,共8页Journal of Oceanography In Taiwan Strait

基　　金：国家"908"专项资助项目(908-02-02-0333);国家海洋公益性行业科研专项经费资助项目(200805065;200805080);海洋赤潮灾害立体监测技术与应用国家海洋局重点实验室开放基金资助项目(MATHAB200905)

摘　　要：2004～2010年夏季(8月),在杭州湾设置12～15个采样点,采集鱼类浮游生物样本共93网次.经鉴定分析,共得鱼卵233粒,仔稚鱼29 825尾,仔稚鱼分别隶属8目17科26属34种,其中凤鲚(Coilia mystus)为优势种,数量占总量的91.5%,历年优势度在80.0%～99.1%之间.各年比例较高的种类还有弹涂鱼属一种(Periophthalmus sp.1)、鮻(Liza haematocheila)、鲻鱼(Mugil cephalus)、中颌棱鳀(Thrissa mystax)、康氏小公鱼(Anchoviella commersonii)、棘头梅童鱼(Collichthys lucidus)和七星底灯鱼(Benthosema pterotum)等.滩浒山附近和杭州湾内湾南部海域鱼类浮游生物密度较高,是杭州湾内凤鲚仔稚鱼活动的主要区域.生态类型主要包括半咸水型种类、沿岸型种类和近岸型种类.对鱼类浮游生物密度与主要环境因子进行逐步回归分析,结果显示,鱼类浮游生物密度的自然对数与水体透明度、盐度和水温的相关性显著(p<0.05),其中与水体透明度的相关系数最大.In summer during 2004~2010,a total of 93 ichthyoplankton samples were collected at 15 stations in Hangzhou Bay.As results,233 eggs and 29 825 larvae were obtained.Meanwhile,a total of 34 taxa of fish larvae were found belonging to 8 orders,17 families and 26 genera.Coilia mystus was the dominant species with a percentage of 91.5% of the whole ichthyoplankton.The range of dominance was 80.0%~99.1%.Other familiar species included Periophthalmus sp.1,Liza haematocheila,Mugil cephalus,Thrissa mystax,Anchoviella commersonii,Collichthys lucidus,Benthosema pterotum,etc.Ichthyoplankton in surrounding water of Tanxu island and in the southern Hangzhou Bay was much denser compared with other areas.The main ecological groups were brackish water group,coastal group and alongshore group.Results of stepwise regression analysis with ichthyoplankton density and environmental factors showed that the correlation was significant（p0.05） between ichthyoplankton logarithm density and factors of hydrological conditions including salinity,temperature and particularly water transparency.

关 键 词：海洋生物学 鱼类浮游生物 杭州湾 种类组成 数量分布 

分 类 号：P735[天文地球—海洋生物学]