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Position: Home > Articles > Observation on the Chromosomes in 2 Species of Bivalve Journal of Anhui Agricultural Sciences 2008,36 (12) 5012-5013

2种双壳贝类染色体的观察研究

作  者:
李鹏;孙振兴
单  位:
鲁东大学生命科学学院
关键词:
等边浅蛤;江户布目蛤;染色体
摘  要:
[目的]为贝类的细胞遗传学研究提供基础资料。[方法]以等边浅蛤和江户布目蛤的鳃组织为研究材料,用植物血球凝集素和秋水仙素对2种双壳贝类的腮组织进行处理后,采用滴片-空气干燥法制片并观察其染色体数目。[结果]通过观察2种贝类的中期分裂相,发现等边浅蛤的染色体众数为36的分裂相细胞,占全部计数细胞的55.0%,说明其染色体数目(2n)为36。而江户布目蛤的染色体众数为30的分裂相细胞,占全部计数细胞的58.8%,说明江户布目蛤的染色体数目(2n)为30。[结论]从细胞水平上看,日本镜蛤(2n=30)和江户布目蛤有较亲密的亲缘关系,而青蛤(2n=36)和等边浅蛤也有较亲密的亲缘关系。
译  名:
Observation on the Chromosomes in 2 Species of Bivalve
作  者:
LI Peng et al(College of Life Science,Ludong University,Yantai,Shandong 264025)
关键词:
Gomphina aequilatera;Protothaca jedoensis;Chromosome
摘  要:
[Objective] The aim of the research was to provide the basic data for the cytogenetic study of shellfish.[Method] With gill tissues of Gomphina aequilatera and Protothaca jedoensis as research materials,after the gill tissues of 2 species of bivalve were treated with phytohemagglutinin and colchicine,specimens were prepared by using dripping tablets and air drying method to observe the chromosome number.[Result] Through observing the metaphases of 2 species of shellfish,it was found that the divding cells in G.aequilatera with the chromosome mode of 36 occupied 55.0% in all counted cells,which indicated that its chromosome number(2n) was 36.The dividing cells in P.jedoensis with the chromosome mode of 30 occupied 58.8%all counted cells,which indicated that its chromosome number(2n) was 30.[Conclusion] At the cellular level,Dosinia japonica(2n=30) had closer genetic relationship with P.jedoensis,while Cyclina sinensis(2n=36)had closer genetic relationship with G.aequilatera.

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