钱塘江干流(清渚江至七堡江段)软体动物的定量调查  

A Quantitative Investigation of Mollusks in the Main Stream of the Qiantang River (from Qingzhujiang to Qibao)

作　　者：黄惟灏[1] 李章来[1] 

机构地区：[1]浙江省淡水水产研究所,湖州313001

出　　处：《动物学杂志》2003年第4期56-61,共6页Chinese Journal of Zoology

摘　　要：本文是对钱塘江干流清渚江至七堡江段软体动物定量调查的结果。标本经鉴定计有 1 6种 ,其中腹足纲 1 1种 ,瓣鳃纲 5种 ,优势种为河蚬。该江段软体动物的全年平均生物量为 ( 1 1 4 5± 1 0 0 2 )g m2 ,密度为 ( 64 5 2± 1 1 80 )个 m2 ,其中河蚬平均生物量为 ( 1 0 9 5 3± 1 6 96)g m2 ,密度为 ( 3 6 45± 6 3 6)个 m2 。探讨了该江段河蚬的主产区和河蚬种群内分布的类型 ,提出了软体动物渔业利用的建议。This paper presents the results of a quantitative investigation on mollusks in the main stream of the Qaintang River from Qingzhujiang to Qibao. Specimen identification indicated that there were 16 species, including 11 species of Gastropod and 5 species of Lamellibranchs. The dominant species was identified as Corbicula fluminea. Results of quantitative investigation showed that the total annual average biomass of mollusks in the investigated waters was (114 5±10 02)g/m 2 with a density of (64 52±11 8) individual/m 2, while that of the dominant species in the investigated waters was (109 53±16 96)g/m 2 with a density of (34 45±6 36) individual/m 2. The main production zone and the distribution of Corbicula fluminea in the fauna, and comments on proper utilization of the mollusk resource for fisheries purpose are discussed.

关 键 词：淡水软体动物 现存量 钱塘江干流 

分 类 号：Q958[生物学—动物学]