引用本文: | 郑小东,张涛,黄水英,刘旭东,王清,杨红生,张福绥.硬壳蛤的核型研究[J].海洋科学,2005,29(8):71-74. |
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摘要: |
基于硬壳蛤(Mercenaria mercenaria(Linnaeus,1758))是一种生长速度快、经济效益高的埋栖型双壳类,为给生产提供更多的遗传学理论依据,以硬壳蛤胚胎(4~8细胞期)为材料,通过压片法和空气干燥法进行染色体制片和核型分析。结果表明:硬壳蛤二倍体染色体数目为2n=38,其中中部着丝粒染色体(m)有14对,亚中部着丝粒染色体(sm)有4对,亚端部着丝粒染色体(st)有1对,无端部着丝粒染色体(t)。核型公式为28m+8sm+2st,染色体臂数=74,未发现性染色体和随体。 |
关键词: 硬壳蛤(Mercenaria mercenaria(Linnaeus,1758)) 染色体 核型 |
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基金项目:国家“863”青年基金项目(2004AA603810);国家级星火计划项目(2004EA741014);山东省科技兴海项目;青岛市重大科技项目 |
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The karyotype of hard clam Mercenaria mercenaria (Linnaeus,1758) |
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Abstract: |
The karyotype of Mercenaria mercenaria was studied using embryonic cells(4~8 cell period). The chromosomes were prepared by squashing and air-dry method. The diploid chromosome number of Mercenaria mercenaria is 2n=38. The karytype of Mercenaria mercenaria can be described by 28m+8sm+2st with NF=74. The sex chromosomes and the satellites were not found. |
Key words: hard clam Mercenaria mercenaria chromosome karyotype |