【摘要】 方斑东风螺(Babylonia areolata)和泥东风螺(Babylonia lutosa)隶属于东风螺属,是中国重要的水产经济品种.以这两种东风螺的担轮幼体为实验材料,经秋水仙素处理,空气干燥法制片,Giemsa染色,观察分析获得的两种东风螺染色体核型.结果表明,方斑东风螺核型为2n=66=32m+20sm+8st+6t,染色体总臂数NF=118.泥东风螺核型为2n=66=30m+22sm+8st+6t,总臂数NF=118.两种东风螺的全套染色体中均未发现次缢痕、随体及性染色体.另外,本研究还分析了这两种螺与蛾螺科其他种类之间的染色体数目差异,为探讨它们之间的亲源关系提供科学依据.更多还原

【Abstract】 Babylonia aerolata and B.Lutosa are two commonly commercially important species among the members of the Lvory Shell genus Babylonia.The karyotypes of the chromosomes of these two species were examined by the colchicines-hypotonic-air drying-giemsa staining method.The karyotype formulae of Babylonia areolata was 2n=66=32m+20sm+8st+6t,and NF was found to be 118.The karyotype formulae of Babylonia lutosa was 2n=66=30m+22sm+8st+6t,and NF was found to be 118.The secondary constriction,satellites and sex chromosomes were not observed.Furthermore,the comparison of karyotype is also made between different species of Buccinidae family,so as to lay a theoretic foundation for further researches on their evolutional relationship.更多还原