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Analysis of parentage between male Pelteobagrus fulvidraco and guarded fertilized eggs

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Author(s): JIANG Peng | YIN Hong-Bin | ZHANG Yan | LI Da-Yu | SUN Xiao-Wen

Journal: Acta Zoologica Sinica
ISSN 0001-7302

Volume: 54;
Issue: 5;
Start page: 798;
Date: 2008;

ABSTRACT
Parental investment through extended parental care of young presumably enhances the reproductive success of the custodial parent, such as the mature males of Pelteobagrus fulvidraco which often build nests to guard their oosperm. The parentage is yet not to be clear between male Pelteobagrus fulvidraco and guarded eggs. In this study, ten microsatellite makers were used to identify the parentage of 12 nests between the Pelteobagrus fulvidraco and the guarded oosperm. And also, the genetic diversity of offspring was investigated. Results showed that ten markers would exclude the alleged parent with a probability of 0.9986. In father-son set, the average relative chance of paternity (RCP) ranged from 99.989% to 99.999%. Also, the cumulative paternity index (PI) ranged from 2006.73 to 604464.07. Moreover, the alleles of eggs origin from two females in three nests, this implied that one male Pelteobagrus fulvidraco could mate with two females. The average number of alleles per locus ranged from 6.0 to 14, (mean=11.7), while unbiased heterozygosity (No) ranged from 0.2473 to 0.9866, and polymorphic information content (PIC) ranged from 0.7096 to 0.8993. Through identifying the parentage, the parentage between mature males and guarded oosperm could be affirmed [Acta Zoologica Sinica 54(5): 798–804, 2008].

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