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dc.contributor.authorAraki, Hitoshi
dc.contributor.editorRomana-Eguia, Maria Rowena R.
dc.contributor.editorParado-Estepa, Fe D.
dc.contributor.editorSalayo, Nerissa D.
dc.contributor.editorLebata-Ramos, Ma. Junemie Hazel
dc.date.accessioned2016-01-19T09:59:22Z
dc.date.available2016-01-19T09:59:22Z
dc.date.issued2015
dc.identifier.citationAraki, H. (2015). Rapid adaptation to a new environment: is it reversible? In M. R. R. Romana-Eguia, F. D. Parado-Estepa, N. D. Salayo, & M. J. H. Lebata-Ramos (Eds.), Resource Enhancement and Sustainable Aquaculture Practices in Southeast Asia: Challenges in Responsible Production of Aquatic Species: Proceedings of the International Workshop on Resource Enhancement and Sustainable Aquaculture Practices in Southeast Asia 2014 (RESA) (pp. 19-24). Tigbauan, Iloilo, Philippines: Aquaculture Dept., Southeast Asian Fisheries Development Center.en
dc.identifier.isbn9789719931041
dc.identifier.urihttp://hdl.handle.net/10862/2760
dc.description.abstractAccumulating evidence suggests rapid adaptation of fish populations when they are exposed to artificial hatchery environments. However, little is known if rapidly-adapted populations can readapt to their original, natural environment at the same rate. Here, I review recent studies on salmonid fish that address this issue. They indeed suggest rapid adaptation of hatchery populations, in which reproductive fitness under a natural environment became much lower than that in the wild population after only 1-2 generations of captive breeding. However, the reproductive fitness did not recover after one generation of natural rearing, implying that rapid adaptation to a new environment was not reversible at the same rate. I discuss potential consequences of the irreversible fitness reduction in extensively stocked fish species. Understanding the mechanism behind the irreversible rapid adaptation in fish populations will help us figure out a better, nature-friendly, and hence sustainable means of hatchery operations for human welfare.en
dc.language.isoenen
dc.publisherAquaculture Department, Southeast Asian Fisheries Development Centeren
dc.subjecthatcheriesen
dc.subjectSalmo trutta
dc.subjectOncorhynchus gorbuscha
dc.subjectOncorhynchus mykiss
dc.subjectSalmonidae
dc.subjectOncorhynchus tshawytscha
dc.subjectOncorhynchus kisutch
dc.subjectFish stockingen
dc.subjectRapid adaptationen
dc.subjectReproductive fitnessen
dc.subjectSalmonid speciesen
dc.titleRapid adaptation to a new environment: is it reversible?en
dc.typeConference paperen
dc.citation.spage19
dc.citation.epage24
dc.subject.asfaAdaptationsen
dc.subject.asfabreedingen
dc.subject.asfaAnadromous speciesen
dc.subject.asfabehaviouren
dc.subject.asfastocksen
dc.subject.asfaculture effectsen
dc.subject.asfareproductionen
dc.subject.asfareproductive behaviouren
dc.subject.asfacultured organismsen
dc.subject.asfafish cultureen
dc.citation.conferenceTitleResource Enhancement and Sustainable Aquaculture Practices in Southeast Asia: Challenges in Responsible Production of Aquatic Species: Proceedings of the International Workshop on Resource Enhancement and Sustainable Aquaculture Practices in Southeast Asia 2014 (RESA)en


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