Exposure to a common environment erodes inherited between-population trophic morphology differences in Arctic charr

被引:23
作者
Alexander, GD [1 ]
Adams, CE [1 ]
机构
[1] Univ Glasgow, Fish Biol Grp, Inst Biomed & Life Sci, Univ Field Stn, Loch Lomond, Glasgow G63 0AW, Lanark, Scotland
关键词
phenotypic change; phenotypic plasticity; Salvelinus alpinus;
D O I
10.1111/j.1095-8649.2004.00276.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Arctic charr Salvelinus alpinus juveniles reared from eggs collected from four Scottish populations showed inherited variation in their expression of trophic morphology, measured as a suite of eight characteristics of the head and mouth, before their first exogenous feeding. This demonstrated a genetic component to trophic morphology expression. During a period of 5 months following first feeding, typified by rapid growth, the differential between groups exposed to a common rearing and feeding environment was reduced significantly. It was concluded that this was the result of common environmental exposure acting on phenotypic plasticity in trophic morphology. (C) 2004 The Fisheries Society of the British Isles.
引用
收藏
页码:253 / 257
页数:5
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