伊犁河两种裂腹鱼类基因安全和种群分布的关系  

Spatial Distribution,Gonad Development and Reproductive Isolation Mechanism in Two Schizothoracins in Yili River

作　　者：牛建功[1] 蔡林钢[1] 李红[1] 马徐发[2] 

机构地区：[1]新疆维吾尔自治区水产科学研究所,新疆乌鲁木齐830000 [2]华中农业大学,湖北武汉430070

出　　处：《水产学杂志》2015年第4期1-5,共5页Chinese Journal of Fisheries

基　　金：国家科技基础性工作专项(2012FY112700);新疆维吾尔自治区自然科学基金(2015211B026);国家自然科学基金项目(31060357)

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。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 inheri-tance.

关 键 词：裂腹鱼类 种群分布 性腺发育 生殖适应性 

分 类 号：S917[农业科学—水产科学] Q347[生物学—遗传学]