摘要
对采集于信阳市浉河的31尾大鳍刺鰟鮍的年轮特征、长重关系、食性和繁殖力等进行研究.结果表明:大鳍刺鰟鮍多为一年生,环片间平行,多呈开阔的U型轮纹;体长与体质量的相关数学式为W=0.018L3.0945,雌性个体的平均肥满度较雄性略高;食物组成复杂,能摄取动、植物,同时摄取一些有机碎屑,植物在饵料中比例较高;卵径呈多峰状分布,绝对繁殖力在1101.6～4470.2之间.大鳍刺鳑鮍的年轮为闭合切割型,呈等速生长,属于偏植物性的杂食鱼类,分批产卵,绝对繁殖力与体长的关系为正相关.
According to the samples of 31 Acanthorhodeus macropterus Bleeker collected from Shihe River in Xinyang city, some biological characteristics, such as ring feature, relationship between body length and weight, feeding habit and fecundity were studied in the paper. It was found that, Acanthorhodeus macropterus Bleeker was usually one year old, with the rings on scale parallel and often U-shaped, the formula of relationship between body length and weight was W = 0. 018L^3.0945, as well as the fullness of the female was higher than the male, the diet composition was wide, including predominant plants and partly animals ,the individual absolute fecundity （AF） was between 1101.6 -4470.2 granules, with linear relationship existed between absolute fecundity and body length.
出处
《信阳师范学院学报（自然科学版）》
CAS
北大核心
2012年第4期495-499,共5页
Journal of Xinyang Normal University(Natural Science Edition)
基金
中国科学院武汉植物园水域生态重点实验室项目(201102)
河南省教育厅科学技术研究重点项目(12A180023)
关键词
大鳍刺鰟鮍
年轮特征
长重关系
食性
繁殖力
Acanthorhodeus macropterus Bleeker
ring feature
length-weight relationship
feeding habit
fecundity
