Size-selective harvesting alters biological traits of marine medaka (Oryzias melastigma)

18866 8 104727 3 318919 document 104727 Xi etal 2023 Size-selective harvesting alters biological traits of marine medaka.pdf application/pdf 7b63c2538d30dfbbf6d577c4c95fffb9 MD5 1787876 2024-01-30 09:13:27 https://pure.iiasa.ac.at/id/eprint/18866/1/Xi%20etal%202023%20Size-selective%20harvesting%20alters%20biological%20traits%20of%20marine%20medaka.pdf 18866 1 1 application/pdf text en public cc_by_nc_nd_4

Xi etal 2023 Size-selective harvesting alters biological traits of marine medaka.pdf

2024-06-01 accepted 104728 2 318922 document 104728 lightbox.jpg image/png 132363f23e72f16857bca53e0bc303a5 MD5 45084 2024-01-30 09:14:24 https://pure.iiasa.ac.at/id/eprint/18866/2/lightbox.jpg 18866 2 2 image/png other Thumbnails conversion from text to thumbnail_lightbox en staffonly

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/104727 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/104727 http://eprints.org/relation/isIndexCodesVersionOf https://pure.iiasa.ac.at/id/document/104727 archive 353 disk0/00/01/88/66 2023-06-26 06:48:18 2024-06-01 03:00:03 2023-06-26 06:48:18 article show Xi X. Sun P. Sun R. Tian Y. Heino M. 7602 0000-0003-2928-3940 Size-selective harvesting alters biological traits of marine medaka (Oryzias melastigma) pub ASA CAT EM Biological traits; Early life stages; Marine medaka; Size-selective harvest Under long-term fishing pressure, the biological traits of many wild fish populations have changed. Such phenotypic changes include smaller in size and earlier age-at-maturation, strongly suggesting that fishing could induce rapid changes in the life-history traits of fish. However, whether extensive fishing will lead to genetic changes in fish, how they occur, and whether they are reversible still requires further research. In this study, we analyzed biological traits of marine medaka (Oryzias melastigma) subjected to 50% experimental harvest for 4 consecutive generations. This study adopted a factorial design with three size-selective harvesting strategies (large-, small-, and random-size selection) on groups either before or after maturation. We compared the growth, maturation, and early life stages of marine medaka for different harvesting strategies. The results showed that the mean lengths and mean weights in large-harvested populations significantly declined after 4 generations, whereas small-harvested populations did the opposite. Furthermore, selective harvesting of large individuals also led to earlier maturation, declining fecundity, declining hatching rate and increasing larval mortality. Importantly, compared to harvesting before maturation, harvesting after maturation could mitigate the effects of harvest on biological traits. This study provided experimental evidence for the impact of selective harvest on phenotypic evolution and contributed to the theoretical basis for sustainability in fisheries and fishery management. 2023-10 published Elsevier doi:10.1016/j.fishres.2023.106775 122 public Fisheries Research 266 e106775 TRUE 1872-6763 no info:eu-repo/semantics/article