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5种裸腹溞的核型及亲缘进化关系的研究
引用本文:张鹏,赵文,孙静娴.5种裸腹溞的核型及亲缘进化关系的研究[J].大连水产学院学报,2009,24(2):109-113.
作者姓名:张鹏  赵文  孙静娴
作者单位:大连水产学院,辽宁省水生生物学重点实验室,辽宁,大连,116023
基金项目:国家自然科学基金,辽宁省自然科学基金 
摘    要:以5种裸腹溞Moina为试验材料进行了染色体数目和核型的研究。染色体制片采用气干法,依据Levan等和Stebbins的标准进行染色体分类。结果表明:蒙古裸腹溞M.mongolica的核型公式为2N=6M+18T,NF=30,1A;多刺裸腹溞M.macrocopa,2N=10M+12T,NF=32,1A;直额裸腹溞M.rectirostris,2N=12M+12T,NF=36,1B;微型裸腹溞M.micrura,2N=10M+14T,NF=34,1A;近亲裸腹溞M.affinis,2N=12M+14T,NF=38,1B。在此基础上进一步探讨了5种裸腹溞的亲缘进化关系,认为5种裸腹溞按进化地位的高低顺序依次为直额裸腹溞〉近亲裸腹溞〉多刺裸腹溞〉微型裸腹溞〉蒙古裸腹溞。

关 键 词:裸腹溞  染色体  核型  亲缘进化关系

The karyotype and evolutionary relationship among 5 species water fleas Moina
ZHANG Peng,ZHAO Wen,SUN Jing-xian.The karyotype and evolutionary relationship among 5 species water fleas Moina[J].Journal of Dalian Fisheries University,2009,24(2):109-113.
Authors:ZHANG Peng  ZHAO Wen  SUN Jing-xian
Institution:ZHANG Peng,ZHAO Wen,SUN Jing-xian(Key Laboratory of Hydrobiology in Liaoning Province's University,Dalian Fisheries Univ.,Dalian 116023,China)
Abstract:The chromosomal numbers and karyotypes of 5 species water fleas Moina were studied by the air-drying method.The chromosomes were classified by the methods of Levan et al.and Stebbins.The karyotype formula was found as following: 2N=24=6M +18T,NF=30,1A in M.mongolica;2N=22=10M+12T,NF=32,1A in M.macrocopa;2N=24=12M+12T,NF=36,1B in M.rectirostris;2N=24=10M+14T,NF=34,1A in M.micrura;2N=26=12M+14T,NF=38,1B in M.affinis.Furthermore,the evolutionary relationship among 5 species of Moina was discussed,and the compa...
Keywords:Moina  chromosome  karyotype  evolutionary relationship  
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