Heritable morphological differentiation in salmonids from two distinct stream types

Dermond, Philip; Sperlich, Nicola; Brodersen, Jakob (2019). Heritable morphological differentiation in salmonids from two distinct stream types. Journal of fish biology, 95(5), pp. 1215-1222. Wiley 10.1111/jfb.14121

Text Dermond Sperlich & Brodersen 2019_Heritable morphological differentiation in salmonids from two distinct stream types.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (1MB) | Request a copy

We tested for phenotype-to-habitat associations in brown trout Salmo trutta populations from two ecologically different habitat types; i.e., groundwater and surface-water-fed streams. Additionally, we raised captive offspring from two such populations under standardised conditions to test whether potential phenotypic differentiation would be passed on to offspring. We found analogous differentiation by habitat in multiple wild populations. Some of these morphological differences were at least partially inherited by offspring. We suggest that this could have implications for both scientists and fisheries authorities studying or managing trout populations.

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