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袁河花鱼骨的种群特征

投稿时间：2012-11-15 修订日期：2012-11-23

DOI：

中文关键词:花鱼骨种群形态学袁河

英文关键词:Hemibarbus maculates population morphology Yuanhe River

基金项目:

作者	单位	E-mail
庹云^*	江西宜春学院生命科学与资源环境学院，江西宜春　３３６０００	fisher007@163.com

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中文摘要:

对采集自袁河(宜春市袁州区段)的140尾花鱼骨的形态特征、生物学特性进行测量分析。鳍式:背鳍Ⅲ,7～8;臀鳍Ⅲ,6;胸鳍Ⅰ,16～18;腹鳍Ⅰ,7～8。食物以摇蚊幼虫、藻类和软体动物为主。由1～5龄组成,2龄组比例最高,占45%。2龄生长速度最快。体长与年龄关系L=2.828t+9.732,体重与年龄关系W=5.690t2+14.74t+15.40,体长与体重关系W=2.2×10-2L2.916。个体绝对怀卵量1602～47477粒,个体绝对繁殖力与体长的回归关系F=1996L-23159,单位体长怀卵量114.23～1684粒/cm,单位体重怀卵量21～288粒/g。袁河花鱼骨种群的年龄结构不合理,个体小型化。捕捞规格应为体长大于21.45cm、体重大于133.3g。

英文摘要:

The biological characteristics of Hemibarbus maculates were studied by using the 140 specimens collected in the period between March 2009 and June 2010 from the Yuanhe River in Jiangxi，China. Results showed that the fin type of H. maculatus is D. Ⅲ -7 (8)，A. Ⅲ -6. The main preys of H. maculates adults were chironomid larvae，alga and mollusk. The population of H. maculates was composed of one-year-old to five-year-old individuals .Two-year-old H. maculates had the highest proportion，which was 45 %，and were the fastest growing individuals . Relationships between body length，body weight and age were expressed as formulas: L=2.828 t+9. 732 and W=5. 690t2+14. 74t+15. 40，respectively. Relationship between body length and body weight was expressed as the formula :W=2. 2•10一2L2.916 . The individual absolute fecundity ranged from 1602 to 47477 eggs. Relationship between fecundity and body length was indicated by the equation := 1996L一23159 .The individual relative fecundities by body length were 114.23 to 1684 eggs/cm，and by body weight were 21 to 288 eggs/g. The age structure of H. maculatus population in Yuanhe River was unreasonable. The capture size of H. maculatus should be longer than21.45cm and heavier than 133.3 g.

庹云.2012.袁河花鱼骨的种群特征[J].水生态学杂志,33(6):109-113.

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