Selection experiment on guppy ornamental traits

Magdalena Herdegen-Radwan, Silvia Cattelan, Jakub Buda, Jarosław Raubic & Jacek Radwan
Female preferences for male ornamental traits can arise from indirect benefits, such as increased attractiveness or better viability of progeny, but empirical evidence for such benefits is inconsistent. Artificial selection offers a powerful way to investigate indirect effects of male ornaments. Here, we selected for the area of orange spots on male guppies, a trait subject to female preferences in our population, in replicated up- and down-selected lines. We found a significant direct response to...
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