摘要
大刺鳅体形扁而长，背鳍鳍棘３３～３４，有“刀鳅”之称，体长与体重呈指数方程：Ｗ＝０．００４９４Ｌ（ｒ＝０．９７２６），最大个体可达０．５ｋｇ。大刺鳅食性以动物性为主，主要食物为水生昆虫，喜爱食物为蜉蝣目。大刺鳅的繁殖习性属分批产卵类型，产卵期为４月底至１１月初，产卵高峰为７月和 ９月，绝对怀卵量为 １９５１．８粒，相对怀卵量为 ３２．７粒／克，成熟系数２３．０％。
Mastacembelus armatus has a long body, small head, protruding lips, and 33 - 34 spines on the dorsal fin, so called 'knife loach'. The heaviest weight is more than 0. 5kg. M. armatus feeds chielfly on animal food. They almost eat aquatic insects and prefer to cat the Ephermereptera. M. armatus can spawn several times per year. Spawning season for the end of April to the beginning of November, frequently occurs in July and September. The absolute fecundity is 1951. 8 and the relative fecundity is 32. 7, the mature coefficient is 23. 0%.
出处
《水产学报》
CAS
CSCD
北大核心
1999年第S1期1-6,共6页
Journal of Fisheries of China
基金
厦门水产学院自然基金!1994-5
关键词
大刺鳅
食性
繁殖生物学
Mastaeembelus armatus, Feeding habit, Reproductive biology
