阿克苏河塔里木裂腹鱼生物学初步研究  

Preliminary Study on the Biologica of Schizothorax biddulphi Günter in Aksu River

作　　者：马燕武[1] 张人铭[1] 吐尔逊[1] 谢春刚[1] 郭焱[1] 

机构地区：[1]新疆维吾尔自治区水产科学研究所,新疆乌鲁木齐830000

出　　处：《水生态学杂志》2009年第2期148-153,共6页Journal of Hydroecology

基　　金：新疆维吾尔自治区自然科学基金(200521105)

摘　　要：采用常规生物学方法,对阿克苏河塔里木裂腹鱼的形态特征、体长与体重关系、肥满度、食性、繁殖等个体生物学特征进行了观测研究。结果表明,塔里木裂腹鱼体长与体重的相关表达式为:W=0.020L2.8886(r=0.992);杂食性,喜食水生昆虫。在体长30cm以内,随着体长的增加,肥满度逐渐降低。Ⅴ期时绝对怀卵量平均为3784粒,相对怀卵量平均为23粒/g。成熟卵卵径为1.51～1.83mm。种群性比(♀∶♂)为1.0∶1.4;繁殖群体性比(♀∶♂)为1.0∶1.5。雄性最小性成熟个体体长77mm、体重7.0g;雌性最小性成熟个体体长133mm、体重36.0g。每年4～5月,当水温达到12℃时,开始溯河繁殖。The biological characteristics of Schizothorx biddulphi Gtinter in Aksu river, such as morphological feature, the relationship of body length and weight, plumpness, feeding habits, reproduction, ect. , were observed by means of biological survey. The results showed that the relationship between its body length and weight was as fol- lows ： W = 0. 020L^2.8886 （ r = 0. 992 ）. Within 30 cm of the body length, plumpness gradually reduced with the growth of body. It＇s diets were miscellaneous and main food was aquatic insects. The fertility was lower, average of absolute fecundity of the breeding groups was 3 784 eggs and relative brood strength were 23 eggs/g, and the diameter of manual eggs were 1.51 - 1.83mm. The sex ratio of males to females in the brood stock was 1.0 to 1.5. than the population compares （ ♀ ： ♂ ） 1.0 ： 1.4. In all t he brood stocks , the body length and body weight of the smallest male individual are 77 mm and 7.0 g , respectively , while the body length and body weight of the smallest female individual are 133 mm and 36.0 g . Breeding time is from April to May.

关 键 词：阿克苏河 塔里木裂腹鱼 生物学 塔里木河 

分 类 号：S917[农业科学—水产科学]