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DOI | 10.1139/cjfas-2018-0123 |
Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes | |
Reed, Thomas E.1; Prodohl, Paulo2; Bradley, Caroline2; Gilbey, John3; McGinnity, Philip1,4; Primmer, Craig R.5,6; Bacon, Philip J.3 | |
发表日期 | 2019 |
ISSN | 0706-652X |
EISSN | 1205-7533 |
卷号 | 76期号:5页码:790-805 |
英文摘要 | While evolutionary responses require heritable variation, estimates of heritability (h(2)) from wild fish populations remain rare. A 20-year molecular pedigree for a wild Scottish population of Atlantic salmon (Salmo salar) was used to investigate genetic contributions to (co) variation in two important, correlated, phenotypic traits: "sea age" (number of winters spent at sea prior to spawning) and size-at-maturity (body length just prior to spawning). Sea age was strongly heritable (h(2) = 0.51) and size exhibited moderate heritability (h(2) = 0.27). A very strong genetic correlation (r(G) = 0.96) between these traits implied the same functional loci must underpin variation in each. Indeed, body size within sea ages had much lower heritability that did not differ significantly from zero. Thus, within wild S. salar populations, temporal changes in sea age composition could reflect evolutionary responses, whereas rapid changes of body size within sea ages are more likely due to phenotypic plasticity. These inheritance patterns will influence the scope of evolutionary responses to factors such as harvest or climate change and, hence, have management implications for salmonid populations comprising a mix of sea ages. |
WOS研究方向 | Fisheries ; Marine & Freshwater Biology |
来源期刊 | CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/97213 |
作者单位 | 1.Univ Cork, Sch Biol Earth & Environm Sci, North Mall, Cork, Ireland; 2.Queens Univ Belfast, Inst Global Food Secur, Sch Biol Sci, Ctr Med Biol, 97 Lisburn Rd, Belfast BT9 7BL, Antrim, North Ireland; 3.Marine Scotland Sci, Freshwater Lab, Pitlochry PH16 5LB, Perth, Scotland; 4.Marine Inst, Newport, Mayo, Ireland; 5.Univ Helsinki, Dept Biosci, FIN-00014 Helsinki, Finland; 6.Univ Helsinki, Inst Biotechnol, FIN-00014 Helsinki, Finland |
推荐引用方式 GB/T 7714 | Reed, Thomas E.,Prodohl, Paulo,Bradley, Caroline,et al. Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes[J],2019,76(5):790-805. |
APA | Reed, Thomas E..,Prodohl, Paulo.,Bradley, Caroline.,Gilbey, John.,McGinnity, Philip.,...&Bacon, Philip J..(2019).Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes.CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES,76(5),790-805. |
MLA | Reed, Thomas E.,et al."Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes".CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES 76.5(2019):790-805. |
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