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Position: Home > Articles > Spatial Distribution,Gonad Development and Reproductive Isolation Mechanism in Two Schizothoracins in Yili River Chinese Journal of Fisheries 2015,28 (4) 1-5

伊犁河两种裂腹鱼类基因安全和种群分布的关系

作  者:
牛建功;蔡林钢;李红;马徐发
单  位:
新疆维吾尔自治区水产科学研究所;华中农业大学
关键词:
裂腹鱼类;种群分布;性腺发育;生殖适应性
摘  要:
研究伊犁河流域新疆裸重唇鱼Gymnodiptychus dybowskii(Kessler)和斑重唇鱼Diptychus maculates Steindachner的种群空间分布和性腺发育。结果表明:这两种裂腹鱼的空间分布具有较高的重叠性与相似性,可以远缘杂交,说明这两种裂腹鱼类具有较近的亲缘关系。但是,它们的繁殖习性却截然不同,性成熟的斑重唇鱼会选择性腺发育处于I~II期的新疆裸重唇鱼共同栖息;性成熟的新疆裸重唇鱼也会仅选择性腺发育处于I~II期的斑重唇鱼共同栖息生长;他们相互之间通过繁殖习性因子的选择避免自然条件下的基因污染,保证自身基因遗传的安全。
译  名:
Spatial Distribution,Gonad Development and Reproductive Isolation Mechanism in Two Schizothoracins in Yili River
作  者:
NIU Jian-gong;CAI Lin-gang;LI Hong;MA Xu-fa;Fisheries Research Institute of Xinjiang Uygur Autonomous Region;Huazhong Agricultural University;
关键词:
Schizothoracins;;population distribution;;gonadal development;;reproductive habit
摘  要:
Spatial distribution and gonad development was investigated in two Schizothoracins,Gymnodiptychus dybowskii(Kessler)and Diptychus maculates Steindachner,in Yili River basin.The results showed that the two fishes had a high overlap and similarity of the spatial distribution,with distant hybridization,indicating a closer relationship between the two fishes.However,the two fishes had distinct,reproductive habits in that the mature Diptychus maculates inhabited with Gymnodiptychus dybowskii with gonad at I~II stage,and that the mature G.dybowskii inhabited with D.maculates with gonad of I~II stage.They avoided gene contamination with each other under natural conditions by choice of reproductive adaptability factors,in order to ensure the safety of their own genetic inheritance.

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