Genetic manipulation of sex ratio for the large-scale breeding of YY super-male and XY all-male yellow catfish (Pelteobagrus fulvidraco (Richardson)).
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.
Key Laboratory of Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources, Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences, Wuhan, 430079, People's Republic of China. hqliu@mail.ihe.ac.cn
Hanqin
H
Liu
Bo
B
Guan
Jiang
J
Xu
Changchun
C
Hou
Hua
H
Tian
Hongxi
H
Chen
D000818:Animals; D017756:Aquaculture / Q000379:methods*; D001947:Breeding / Q000379:methods*; D002397:Catfishes / Q000235:genetics*; D005260:Female; D008297:Male; D019849:Sex Determination Processes / Q000235:genetics; D012744:Sex Ratio; D014998:Y Chromosome / Q000235:genetics*