Mapping Growth-Related Quantitative Trait Locus (QTL) in Commercial Yellow River Carp (Cyprinus carpio haematopterus) during Overwintering

The common carp (Cyprinus carpio) is farmed globally; as a subspecies, the Yellow River (C. c. haematopterus) widely in northern China. Since grows slowly winter, it would benefit breeders to implement breeding program targeting growth winter. In May 2017, we established family and measured body length, height, thickness, weight of individuals before (October 2017) after winter (February 2018). Based on genetic linkage map our laboratory, quantitative trait locus (QTL) mapping these four traits led detection 29 growth-related QTLs, which 9, 7, 3, 10 QTLs were associated with weight, respectively. One consensus QTL contained seven traits. Through two major-effect (qBL-p-1 qBL-p-2), screened three candidate genes (fnd3b, ghsr, pld1), biological activities, such fat formation, growth, membrane transport. These results are helpful exploring regulation mechanism providing reference for regard overwintering carp.