Polygyny carries costs in both sexes in Trinidadian guppies
Tess Makenna van der Walle, Flavio Di Giorgio, Tomos Potter, Anja Felmy
This study shows that polygyny has costs for both male and female Trinidadian guppies, with females experiencing delayed reproduction and increased failure risk, while males have higher reproductive output but slower pregnancy initiation.
bioRxiv · Apr 10, 2026 · PreprintEvolutionary Biology