春季珠江口水域鱼卵和仔稚鱼的分布及其与环境因子的关系  

Relationship between abundance distribution of fish eggs,larvae and juveniles and environmental factors in the Pearl River Estuary waters in spring

作　　者：肖瑜璋[1,2] 王蓉[3,4] 欧强[2] 方宏达[2] 

机构地区：[1]国家海洋局南海环境监测中心,广东广州510300 [2]中国海洋大学环境科学与工程学院,山东青岛272100 [3]国家海洋局南海预报中心 [4]广东省海洋预报台,广东广州510310

出　　处：《台湾海峡》2010年第4期488-495,共8页Journal of Oceanography In Taiwan Strait

基　　金：国家海洋公益性行业科研专项资助项目(200805015)

摘　　要：根据2004~2007年春季珠江口水域10个站位的鱼卵和仔稚鱼调查资料,着重就鱼卵和仔稚鱼的数量分布和年际变化及其与环境因子的相关关系进行研究.结果表明：其鱼卵和仔稚鱼隶属于9目33科58种（类）,以鲈形目种类数所占比例最高（为53.4%）,其次为鲱形目（为20.7%）.鱼卵和仔稚鱼大致分成半咸水性、近岸性和近海性3个生态类群.鱼卵和仔稚鱼优势种类共9种,其中鱼卵优势种为6种,仔稚鱼的也为6种.青洲附近水域是春季鱼卵和仔稚鱼的最主要分布区域之一.鱼卵和仔稚鱼数量的年际变化明显,鱼卵和仔稚鱼个体数量的最大值均出现在2006年.水温、pH值和溶解氧含量是影响鱼卵个体数量的较显著因子,盐度和溶解氧含量为影响仔稚鱼个体数量的较显著因子.盐度、pH值及溶解氧、悬浮物、叶绿素a含量对鱼卵和仔稚鱼种类数均有不同程度的影响.Based on data collected from four oceanographic surveys conducted in spring from 2004 to 2007 in the Pearl River Estuary waters,the inter-annual features of fish eggs,larvae and juveniles abundance distribution were investigated,and their relationship with environmental factors was analyzed.The results showed that fish eggs,larvae and juveniles belonged to 9 phyla,33 families,and 58 species.In addition,Perciformes（53.4%） and Clupeiformes（20.7%） were the two most abundant components of eggs,larvae and juveniles.Three ecological groups of eggs,larvae and juveniles were roughly divided into brackish water,near shore and offshore groups.There were 9 dominant species of fish eggs,larvae and juveniles during spring,with 6 dominant species of eggs and 6 dominant species of larvae and juveniles.The adjacent waters of Qingzhou were one of the most important areas for eggs,larvae and juveniles in spring.The annual variations in the abundance of eggs,larvae and juveniles were obvious,with the maximum abundances occurring in 2006.The most important factors influencing the abundance of fish eggs were water temperature,pH and dissolved oxygen concentration,while those influencing the abundance of fish larvae and juveniles were salinity and dissolved oxygen concentration.Salinity,pH,and dissolved oxygen,suspended substances and chlorophyll-a concentration all influenced the number of types of eggs,larvae and juveniles.

关 键 词：海洋生物学 鱼卵 仔稚鱼 数量分布 种类组成 水温 盐度 珠江口水域 

分 类 号：P735[天文地球—海洋生物学]