粤西福建纹胸鮡的食性及繁殖力

Feeding Habits and Productivity of Glyptothorax fukiensis in Waters of Western Guangdong

对2007年取自粤西水域的福建纹胸鮡进行生物学研究。结果显示:粤西福建纹胸鮡食性是以动物性食物为主;雌雄性比为1.16∶1;性腺成熟系数雌性为0.263%～19.048%,雄性为0.101%～3.226%;福建纹胸鮡个体绝对怀卵量在45～420粒之间,平均140.9±74.7粒;相对怀卵量在31.7～130.4粒/g之间,平均64.3±21.1粒/g;绝对怀卵量与体长呈幂相关:y=0.0008 x7.7308,R2=0.855 2;绝对怀卵量与体重呈指数相关:y=14.439 e0.838 2 x,R2=0.878 3。

The biological study of Glyptothorax fukiensis which were captured in the waters of the western Guangdong in 2007 was carried out. The results showed that： The food habits of Glyptothorax fukiensis was inclined to be carnivorous; The sex ratio of female to male is 1.16：1 and the maturity of ovary was between 0.263% to 19.048% while that of male sex gland was between 0.101% to 3.226%; The absolute brood amount （ABA） of Glyptothorax fukiensis was between 45 ane 420 grains with a average of 140.9±74.7 and the relative productivity was about 31.7 to 130.4 grains per gram body weight with a average of 64.3±21.1; The ABA and body length was to be power related that can be formulated as Y=0.0008x^7.7308,R^2=0.8552 and the correlative between ABA and body weight was to be exponential that can be formulated as Y=14.439e^0.8382x,R^2=0.8783.