Adaptive and plastic variation in growth and maturation of the cutlassfish Trichiurus japonicus in the subtropical Pacific Ocean

15135 9 80874 2 223938 document 80874 wang.pdf application/pdf 368de2f66590864b18b43a55fb74d1cd MD5 1515332 2018-02-22 14:29:32 https://pure.iiasa.ac.at/id/eprint/15135/1/wang.pdf 15135 1 1 application/pdf text en public cc_by

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published 80875 2 223945 document 80875 lightbox.jpg image/png 57ad2fae515a6e8650f0d91167044651 MD5 48848 2018-02-22 14:39:53 https://pure.iiasa.ac.at/id/eprint/15135/2/lightbox.jpg 15135 2 2 image/png other Thumbnails conversion from text to thumbnail_lightbox en public

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/80874 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/80874 http://eprints.org/relation/isIndexCodesVersionOf https://pure.iiasa.ac.at/id/document/80874 archive 353 disk0/00/01/51/35 2018-02-22 14:33:31 2021-08-27 17:29:57 2018-02-22 14:33:31 article show Wang H.-Y. Heino M. 7602 0000-0003-2928-3940 Adaptive and plastic variation in growth and maturation of the cutlassfish Trichiurus japonicus in the subtropical Pacific Ocean pub prog_eep We investigate d va ria- t ion in growth and maturation in response to 1) spatial variation in climate and 2) exploitation of the subtropical cutlassfish Trichiurus japonicus , an important fishery species whose population ecology i s virtually unknown . Individuals of this cutlassfish species were sampled monthly at 2 primary landing sites: Kengfang, in northeast (NE) Taiwan, and Tsukuan, in southwest (SW ) Taiwan, during 2013–2015. Habitat temperatures were about 1–4°C lower at the NE site t han at the SW site, and the length at age of adult fish had a n inverse pattern with temperature (NE lengths > SW lengths at age). The probabilistic maturation reaction norms did not differ significantly between the 2 areas, but ages and lengths a t maturation were higher for males from NE than for males from SW. Differences in asymptotic lengths (NE>SW) and growth coefficients (NE<SW), tog eth- er with narrower length distribution at the SW site than at the NE site, indicate potentially different mortality between the areas (NE<SW). These results indicate plastic variation in maturation and potentially adaptive variation in growth for this species that are related to the differences in temperature and mortality between the areas, although reliable proxies for mortality are lacking. The observed life-history variation was consistent with the tem perature–size rule that organisms tend to grow faster, mature earlier, and reach smal ler asymptotic sizes at warmer temperatures and may indicate an adaptive divergence of cutlassfish populati 2018-02-01 published 10.7755/FB.116.2.6 122 public Fishery Bulletin 116 2 171-182 TRUE 0090-0656 FALSE no info:eu-repo/semantics/article