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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2010 Vol.29 No.3

Study on Individual Fecundity of Opsariichthys bidens of the Beijiang River in Guangdong Province
Author of the article:LI Qiang1, LAN Zhao-jun2, ZHAO Jun2, CHEN Long-xiu2, ZHONG Liang-ming3, YI Zu-sheng1, SHU Hu1, LI Ha
Author's Workplace:(1. School of Life Sciences, Guangzhou University, Guangzhou 510006, China; 2. School of Life Science, South China Normal University, Guangzhou 510631, China; 3. Shaoguan Fisheries Research Institute, Shaoguan, Guangdong Province 512000, China)
Key Words:Opsariichthys bidens;individual fecundity;biological indices;Beijiang River
Abstract:The individual fecundity of Opsariichthys bidens, which were collected in March and April 2009 in the Beijiang River, were studied. The results are summarized as follows. The absolute fecundity of Opsariichthys bidens varies from 1486.29 to 12 025.78(average 4 842.42) eggs. The relative fecundity of body lengthranges from 163.33 to 856.27 (average 437.30) eggs/cm. The fecundity of body weightranges from 99.77 to 470.27 (average 207.29) eggs/g. The relationship between the absolute fecundity and body length (L)body weight (W), net body weight (Wn), ovary weight (Wo)and age (t) could be described by a quadratic equationand the relationship between the absolute fecundityand gonadosomatic indices (GSI), can be regressed by an exponential equation. The absolute fecundity has no obvious relationship with fullness (K). Multi-stepwise regressive analyses show that the absolute fecundity is significantly related with both body weight (W) and gonadosomatic indices (GSI), and the regression equation is F=- 312.129+137.765W+ 108.715 GSI (R² =0.719 n=55 F=57.089, P<0.001).
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