Title

Genetic architecture and maternal contributions of early-life survival in lake trout Salvelinus namaycush

Document Type

Article

Publication Date

2016

Publication Title

Journal of Fish Biology

Volume

88

Issue

5

First Page

2088

Last Page

2094

DOI

10.1111/jfb.12965

Keywords

additive genetic effects, genetic architecture, maternal effects, non-additive genetic effects

Abstract

The influences of additive, non-additive and maternal effects on early survival (uneyed embryo survival, eyed embryo survival, alevin survival and overall survival to first feeding) were quantified in lake trout Salvelinus namaycush using a 7 × 7 full-factorial breeding design. Maternal effects followed by non-additive genetic effects explained around one third of the phenotypic variance of the survival traits. Although the amount of additive genetic effects were low (<1%), suggesting a limited potential of the traits to respond to new selection pressures, how maternal and non-additive genetic effects may respond to selection under certain circumstances are discussed.

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