Inheritance of microsatellite DNA in bisexual gynogenesis complex of Fangzheng silver crucian carp, Carassius auratus gibelio (Bloch)
文献类型： 外文期刊
作者： Jia, Z. Y. 2 ; Shi, L. Y. 2 ; Sun, X. W. 1 ; Lei, Q. Q. 1 ;
作者机构： 1.Harbin Sci & Technol Univ, Dept Mat Sci & Engn, Harbin 150080, Peoples R China
2.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Key Lab Bioengn Breeding No Fishing, Harbin 150070, Peoples R China
关键词： sex ratio;progeny;bisexual gynogenesis
期刊名称：JOURNAL OF FISH BIOLOGY （ 影响因子：2.051； 五年影响因子：2.25 ）
ISSN：
年卷期：
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收录情况： SCI
摘要： Five gynogenetic progeny groups of silver crucian carp Carassius auratus gibelio were produced and sex ratios (males:total progeny) of each of the progeny groups were analysed. About 110 males and 366 females were genotyped at 15 microsatellite loci for comparison with their parents to (1) verify the gynogenesis status of Fangzheng C. auratus gibelio, (2) detect the incorporation of paternal genetic material into the offspring and (3) study the possible association of genetic exchange at microsatellite loci with the existence of sex. The sex ratios in progenies of five groups were highly variable, but all had significant female bias. The sex ratio ranged from 0 to 0.37. Significant differences in the sex ratio within and between groups were also found. Microsatellite genotyping at 15 loci showed that 100 and 97% of the progeny shared the same genotype with the mother in four groups and in one group, respectively, confirming that gynogenesis is the general mechanism of reproduction in C. auratus gibelio. However, 0.63% of all offspring did show incorporation of paternal genetic material. No single loci tested were associated with the occurrence of male progeny, indicating unknown genetic mechanisms for sex determination in C. auratus gibelio.
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