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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
Address:College of Life Sciences, Sichuan University, No.29, Wangjiang Road, Chengdu, Sichuan Province, 610064, China
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Your Position :Home->Past Journals Catalog->2019 Vol.38 No.3

Individual Fecundity of Euchiloglanis kishinouyei in the Zumuzu River
Author of the article:SHI Jinrong, LUO Dongmei, LIANG Lingyue, WANG Yongming, PENG Penglin, XIE Biwen*
Author's Workplace:Conservation and Utilization of Fishes Resources in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, School of Life Sciences, Neijiang Normal University, Neijiang, Sichuan Province 641112, China
Key Words:Euchiloglanis kishinouyei; individual fecundity; morphology index; regression analysis; Zumuzu River
Abstract:Euchiloglanis kishinouyei is an endemic fish lives only in the upper reaches of the Yangtze River, and also an important creature to study fish evolution. This study was to investigate the relationship between individual fecundity and morphology index of E. kishinouyei, and to propose effective measures to protect this species. Female E. kishinouyei specimens at an ovary maturation stage Ⅳ were collected in mid-July 2012 and late-June 2013 in the Zumuzu River, a tributary river of the Yangtze River. The results showed that E. kishinouyei spawns once a year and the main spawning groups were 5 to 8 years old. The individual absolute fecundity, the body length relative fecundity and the body mass relative fecundity were (247.77±81.37) eggs, (17.75±5.34) eggs per centimeter and (6.59±1.99) eggs per gram, respectively. The reproductive strategy of E. kishinouyei was the typical K strategy. The correlation analysis revealed that the individual absolute fecundity, the body length relative fecundity and the body mass relative fecundity were significantly correlated with gonadosomatic index, respectively. The individual absolute fecundity was significantly correlated with body length, while the body mass relative fecundity was significantly correlated with net body mass and condition factor. We can predicted the reproductive ability of the population according to the maturity coefficient, body length and body mass of E. kishinouyei, and then understand the dynamic change of the population.
2019,38(3): 305-310 收稿日期:2018-11-13
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