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. 2024 Jun 27;25(13):7071.
doi: 10.3390/ijms25137071.

Studies on the Relationships between Growth and Gonad Development during First Sexual Maturation of Macrobrachium nipponense and Associated SNPs Screening

Sufei Jiang  1 , Yinxiang Xie  2 , Zijian Gao  2 , Yunpeng Niu  2 , Cheng Ma  2 , Wenyi Zhang  1 , Yiwei Xiong  1 , Hui Qiao  1   2 , Hongtuo Fu  1   2
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Studies on the Relationships between Growth and Gonad Development during First Sexual Maturation of Macrobrachium nipponense and Associated SNPs Screening

Sufei Jiang et al. Int J Mol Sci. .

Abstract

In this study, we used full-sib families to investigate the association between growth and gonad development during first sexual maturation of M. nipponense. We found that male GSI was significantly negatively correlated with growth traits (p < 0.01) and there were no significant correlations between female GSI (Gonadosomatic index) and growth traits (p > 0.05). HSI (Hepatopancreas index) in both males and females showed no significant correlations with growth traits (p > 0.05). We furthermore investigated the association between the specific allele of Mn-CTS L1 polymorphism and gonad development and growth traits. In total, 35 mutation loci were screened and 16 high-quality single-nucleotide polymorphisms (SNPs) loci were obtained after validation. Four and two SNPs proved to be strongly associated with all growth traits in female and male M. nipponense separately, among which A+118T might be a candidate SNP positively associated with large growth traits. Two and one SNPs were screened, respectively, in males and females to associate with GSI, while three SNPs were detected to associate with female HSI, among which A+1379C may be applied as a potential molecular marker for gene-assisted selection to improve both reproduction speed and growth traits in M. nipponense.

Keywords: Cathepsin L1; Macrobrachium nipponense; growth; sexual maturation; single-nucleotide polymorphism.

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Conflict of interest statement

The authors declare no conflicts of interest.

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