Genetic Manipulation of Sex Ratio for the Large-Scale Breeding of YY Super-Male and XY All-Male Yellow Catfish (Pelteobagrus fulvidraco (Richardson))

• DOI: 10.1007/s10126-012-9487-7
• Publication Date: 2012-10-01T18:29:20Z
• Authors: Hanqin Liu; Bo Guan; Jiang Xu; Changchun Hou; Hua Tian; Hongxi Chen
• Keywords: Male; 0303 health sciences; Aquaculture; Breeding; Sex Determination Processes; 03 medical and health sciences; 5. Gender equality; Y Chromosome; Animals; Female; Sex Ratio; 14. Life underwater; Catfishes

Yellow catfish has become one of the most important freshwater aquaculture species in China. The mono-sex male yellow catfish has important application value in aquaculture because the male grows generally faster than the sibling females under the same conditions. This study has screened YY super-male and YY physiological female yellow catfish by sex reversal, gynogenesis, and progeny testing, which can help to achieve the large-scale production of YY super-male and XY all-male. From 2008 to 2010, about 123,000 YY super-male were produced, and about 81 million XY all-male fry were produced with 100% male rate by random sampling. Therefore, these results indicate that YY super-male and YY physiological female yellow catfish can be viable and fertile. We conclude that the mono-sex breeding technique by YY super-male yellow catfish is stable and reliable, which has great potential for application in yellow catfish aquaculture.