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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->2018 Vol.37 No.3

Reproductive Biology of Liobagrus marginatus (Günther) in Panzhihua Reach of the Jinsha River
Author of the article:YU Xueying1,2, TAN Deqing1, DAN Shengguo1, WANG Jianwei1*
Author's Workplace:1. Center for Aquatic Biodiversity and Resource Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;
2. Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, Ocean College, Qinzhou University, Qinzhou, Guangxi Zhuang Autonomous Region 535000, China
Key Words:Jinsha River; Liobagrus marginatus (Günther); reproductive biology
Abstract:To explore the basic biological characteristics of Liobagrus marginatus (Günther) in the Panzhihua reach of the Jinsha River, 729 specimens were used to analyze their age structure, the ratio of female to male, body length and body weight at sexual maturity, and fecundity in this study. The breeding stock was consisted of 4 age groups (Age 1 to 4), of which 2-age was the dominant group (63.83%) and contributed 62.07% to population fecundity. Among sexual mature specimens, 64 were female and 77 were male, thus the ratio of female to male was 1:1.20, which met the theoretical value of 1:1 (χ2=1.199, P>0.05). The minimum body length and body weight of mature female and male were 66.8 mm, 5.7 g and 67.32 mm, 6.7 g, respectively. The breeding season of L. marginatus was from March to June. The average absolute fecundity was 161.2 eggs±55.1 eggs. The development of oocytes in Stage IV ovaries was not completely synchronous, and the egg diameter varied between 0.29 mm to 3.86 mm. Although L. marginatus in Panzhihua reach of the Jinsha River was fast to sexual maturity, its fecundity was low, and the breeding stock was mainly composed of young individuals. The current study indicates the urgent need to strengthen the protection of this species.
2018,37(3): 291-297 收稿日期:2017-09-15
DOI:10.11984/j.issn.1000-7083.20170288
分类号:Q959.4
基金项目:国家自然科学基金项目(50679095);广西科技厅基金项目(2016GXNSFBA380142);广西教育厅基金项目(KY2016YB476,KY2016YB487)
作者简介:于学颖(1984-),女,博士,讲师,研究方向为濒危生物养护,E-mail:junzhi45@163.com
*通讯作者:王剑伟,男,博士,研究员,研究方向为鱼类生物学,E-mail:wangjw@ihb.ac.cn
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浙江省鸟类新纪录——斑背燕尾2018年1月30日,在浙江乌岩岭国家级自然保护区双坑口保护站(119°40'23″E,27°42'37″N,海拔710 m)发现2只斑背燕尾Enicurus maculatus在靠近居民点的溪滩上活动。该鸟腹部白色,头部、胸部、背部和尾部以黑色为主,尾与躯干几乎等长,与本地常见鸟类白额燕尾E. leschenaulti相似。该鸟背部有白色的点状斑,与白额燕尾相区别。斑背燕尾共有4个亚种,本次发现的个体背部白色斑点多,且多为圆形斑点,可与E. m. maculatus亚种(背部白色斑点月牙状)、E. m. guttatus亚种(背部白色斑点少)、E. m. robinsoni亚种(背部白色斑点少)相区分,符合E. m. bacatus亚种的特征(Collar,2018)。斑背燕尾分布在亚洲南部,我国见于西藏、云南、四川、湖南、湖北、江西、福建、广东、广西、贵州等地(周放等,2011;谢镇国等,2014;郑光美,2017)。此次发现的斑背燕尾为浙江省鸟类新纪录。斑背燕尾Enicurus maculatus (刘西 摄)
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