Some aspects of the reproductive biology and sex-ratio of Cirrhina reba (Hamilton) (Cyprinidae : Cypriniformes)

University Journal of Zoology, Rajshahi University Pub Date : 2012-05-23 DOI:10.3329/UJZRU.V30I0.10739

S. Akther, Shirin Akther

引用次数: 3

Abstract

Some aspects of the reproductive biology viz. sex-ratio gonadal length index (G.L.I.), gonado somatic index (G.S.I.) and sex-ratio of Cirrhina reba were studied during September 2004 to July 2005. In present study the highest values of GLI (33.76) and GSI (0.63) were in the month of July. Total length (TL) and gonadal length (GL), total weight (TW) and gonadal weight ( GW ), standard length (SL) and gonadal length ( GL ) and gonadal weight relationships were found to be positive; and the relationships were: GL = -3.873 + 0.219 TL (r = 0.992), GW = 0.01511+0.000815 TL (r = 0.979), GL = -2.6030+0.253 SL (r = 0.990), GL = 0.01997+0.000938 SL (r= 0.976), GW = 13.2952+0.6064 TW (r = 0.958), GW = 0.0772+0.00233 TW (r = 0.979). The sex- ratio of C. reba were 1:1.62 for male and female respectively. The Chi-square test showed significant differences of sex-ratio among months and totals. DOI: http://dx.doi.org/10.3329/ujzru.v30i0.10739 Univ. j. zool. Rajshahi Univ. Vol. 30, 2011 pp. 21-24

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黄颡鱼(鲤科:鲤形目)生殖生物学及性别比的若干问题

本文于2004年9月至2005年7月对黄颡鱼生殖生物学的性别比、性腺长度指数(G.L.I.)、性腺体细胞指数(G.S.I.)和性别比进行了研究。在本研究中，GLI(33.76)和GSI(0.63)在7月份最高。体长(TL)与性腺长(GL)、总重(TW)与性腺重(GW)、标准体长(SL)与性腺长(GL)与性腺重呈正相关;相关性为:GL = -3.873 + 0.219 TL (r= 0.992)， GW = 0.01511+0.000815 TL (r= 0.979)， GL = -2.6030+0.253 SL (r= 0.990)， GL = 0.01997+0.000938 SL (r= 0.976)， GW = 13.2952+0.6064 TW (r= 0.958)， GW = 0.0772+0.00233 TW (r= 0.979)。热刺雌雄性别比为1:1.62。卡方检验显示月份和总数的性别比有显著差异。DOI: http://dx.doi.org/10.3329/ujzru.v30i0.10739 Univ. j. zool。Rajshahi大学，2011年第30卷，第21-24页

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University Journal of Zoology, Rajshahi University

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