文章摘要
孙帼英.太湖河川沙塘鳢的生物学研究[J].水产学报,1996,20(3):
太湖河川沙塘鳢的生物学研究
STUDIES ON THE BIOLOGY OF ODONTOBUTIS POTAMOPHILA IN TAIHU LAK
投稿时间:2014-05-11  修订日期:2014-05-11
DOI:
中文关键词: 河川沙塘鳢  生物学  太湖
英文关键词: Odontobutis potamophila, Biology, Taihu Lake
基金项目:
作者单位地址
孙帼英 华东师范大学 华东师范大学
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中文摘要:
      研究了河川沙塘鳢的年轮特征、生长特性、繁殖和摄食习性。观察比较了耳石、鳞 片、脊椎骨和胸鳍支鳍骨的年轮特征, 选取耳石作为鉴定年龄的依据。渔获物有0~ ..龄五个年龄 组, 其中.. 和.. 龄组占渔获量的85%, ..龄组仅为1. 02%。体长与耳石半径呈直线相关。体长与体 重( W) 和纯体重( W..) 均呈指数函数增长关系, W= 2. 241 6 .. 10- 2 L3. 086 7; W.. = 2. 498 .. 10- 2 L2. 974 7。卵巢发育分.. 期及重复发育的.... 和....期, 属分批非同步型产卵鱼类, 产卵时间为3~ 6 月, 盛产期为4~ 5 月, 繁殖期间至少产两次卵。该鱼主要以无经济价值的小鱼和虾为食。
英文摘要:
      A detailed resear ch is reported in this pa per on the biolo gy of age, gr ow th, feeding habit, r epr oduct ion o f Odontobutis potamphila ( G..nther ) . The oto lith is the best indicator in ag e de terminat ion, w ith ve rtebra and scale as reference. The pe cto ral r adial bo ne is not re liable in age determinat ion. Of all the aquat ic ca tches the age .. and .. co ntr ibuted 85% o f the to ta l number in f iv e.. ye ar gro ups f rom 0 to ... The radius o f oto lith a nd body length are in a signif icant line ar corr elat ion, w hich ca n be described by the fol low ing equat ion: L = 5. 313 3R - 0. 069 03. The relat ionship between bo dy length and bo dy w eight (W) and net w eig ht (W..) ca n be described by the fo llow ing equat ion: .. W= 0. 022 416L3. 086 7; W..= 0. 024 98L2. 974 7. The f ish mainly feeds on juv enile f ish and shrimps, but on less amo unt o f mo lluscs and insect s. The co urse of o varia n maturat io n can be div ided into six sta ges and .. ~ .. .. o r .. stage. The f ish releases two batches at least in a breeding season. The breeding se ason is betw een March and June. The nest preferences are w idely given to many kinds o f substances, such a s gr ass ro o t, tit le, some and other materia ls. The egg mass can be fo und on the top o r side of the nest . The indiv idual abso lute f ecundity ranges f rom 2 645~ 7 708 eg gs and individua l re lat ive ranges f rom 56~ 163 eggs.
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