Journal
FRONTIERS IN ENDOCRINOLOGY
Volume 13, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fendo.2022.923475
Keywords
farmed fish; HPI signaling; domestication; genetic breeding; stress response
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Funding
- National Key RD Program [2018YFD0900404]
- Chinese Academy of Sciences [XDA24010206]
- National Natural Science Foundation of China [32102783]
- State Key Laboratory of Freshwater Ecology and Biotechnology [2019FBZ05]
- Hainan Yazhou Bay Seed Laboratory [B21Y10106]
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The domestication of terrestrial animals traditionally takes thousands of years. This review focuses on how the attenuation of the hypothalamic-pituitary-adrenal (inter-renal in fish) endocrine axis can be applied to accelerate the domestication and genetic breeding of farmed fish.
Human-directed domestication of terrestrial animals traditionally requires thousands of years for breeding. The most prominent behavioral features of domesticated animals include reduced aggression and enhanced tameness relative to their wild forebears, and such behaviors improve the social tolerance of domestic animals toward both humans and crowds of their own species. These behavioral responses are primarily mediated by the hypothalamic-pituitary-adrenal (inter-renal in fish) (HPA/I) endocrine axis, which is involved in the rapid conversion of neuronal-derived perceptual information into hormonal signals. Over recent decades, growing evidence implicating the attenuation of the HPA/I axis during the domestication of animals have been identified through comprehensive genomic analyses of the paleogenomic datasets of wild progenitors and their domestic congeners. Compared with that of terrestrial animals, domestication of most farmed fish species remains at early stages. The present review focuses on the application of HPI signaling attenuation to accelerate the domestication and genetic breeding of farmed fish. We anticipate that deeper understanding of HPI signaling and its implementation in the domestication of farmed fish will benefit genetic breeding to meet the global demands of the aquaculture industry.
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