Construction of the first high-density genetic map for growth related QTL analysis in Ancherythroculter nigrocauda

• 作者: Yanhong SUN Pei LI Guiying WANG Renli SUN Jian CHEN Qi ZHOU Jingou TONG Qing LI
• 来源期刊: 海洋湖沼学报（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: Aquaculture and Fisheries
• 页码范围: 1118-1130
• 页数: 13页
• 语种: 英文

摘要

Ancherythroculter nigrocauda is a fish endemic to the upper areas of the Changjiang (Yangtze) River in China. Quantitative trait locus (QTL) mapping is a powerful tool to identify potential genes affecting traits of economic importance in domestic animals. In this study, a high-density genetic map was constructed with 5901 single nucleotide polymorphism (SNP) makers by sequencing 92 individual fish from a F1 family using the specific-locus amplified fragment sequencing approach. Initially, 48 QTLs for total length, body length, body height, and body weight were identified according to the high density of the genetic map with 24 LGs, a total length of 3839.4 cM, and marker spacing of about 0.82 cM. These QTLs explained 27.1％–49.9％ of phenotypic variance. The results of this study suggest that major QTLs are responsible for the growth of A . nigrocauda , and these are potentially useful in comparative genomics research, genome assembly, and marker-assisted breeding programs for this species.