

FOLLOWUS
1.State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Institute of Aquatic Economic Animals, Sun Yat-Sen University, Guangzhou 510275, China
2.Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Marine Science and Technology Center, Qingdao 266237, China
lsszy@mail.sysu.edu.cn
lshuish@mail.sysu.edu.cn
收稿:2025-08-18,
网络首发:2026-04-07,
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Zixuan E, Xiaoman HUANG, Yonglin MIAO, 等. Assessment of growth performance and transcriptome analysis of mechanisms underlying slow growth in triploid grass carp[J/OL]. 海洋湖沼学报(英文), 2026,1-10.
E Zixuan,HUANG Xiaoman,MIAO Yonglin,et al.Assessment of growth performance and transcriptome analysis of mechanisms underlying slow growth in triploid grass carp[J].Journal of Oceanology and Limnology,
Zixuan E, Xiaoman HUANG, Yonglin MIAO, 等. Assessment of growth performance and transcriptome analysis of mechanisms underlying slow growth in triploid grass carp[J/OL]. 海洋湖沼学报(英文), 2026,1-10. DOI:
E Zixuan,HUANG Xiaoman,MIAO Yonglin,et al.Assessment of growth performance and transcriptome analysis of mechanisms underlying slow growth in triploid grass carp[J].Journal of Oceanology and Limnology, DOI:.
Triploid induction has been widely used in aquaculture to increase somatic growth
induce reproductive sterility
and mitigate ecological risks from uncontrolled breeding. However
the differences in growth between triploids and diploids are species specific. Grass carp (
Ctenopharyngodon
idella
) is a crucial species in China’s freshwater aquaculture industry. A one-year growth trial was conducted
and the results reveal that triploids exhibited a slower growth rate than diploids did. Further analyses demonstrated that the number of erythrocytes and the size of their nuclei were significantly greater in triploids than in their diploid counterparts (
P
<
0.001)
which was accompanied by a reduced packed cell volume (PCV) in triploids (
P
<
0.05). Histological analysis
revealed that the triploid liver displayed features of metabolic stress. Liver transcriptome analysis identified 713 differentially expressed genes (DEGs)
which showed primarily enrichment in metabolic processes
including hexose
lipid
and monosaccharide metabolism. This analysis also revealed significant downregulation of the growth hormone/insulin-like growth factor (GH/IGF) axis (
ghrb
igf1
and
igfbp5a
) and downstream signaling pathways
namely
PI3K-AKT in triploids. The results of this study characterize the early growth performance of triploid grass carp and provide molecular insights into the growth retardation observed in triploid individuals.
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