Peer-Reviewed Publication
Horm Behav2025;176105834.November 1, 2025Journal Article
Adjustment of paternal care in response to experimental variation in extra-pair mating opportunity in male zebra finches.
Navina D Liebermann-Lilie1, Benedikt Schniedermeyer2, Anabel Kröhnert2, Sepand Riyahi3, Sylvia Kaiser4, Tim Schmoll5, Peter Korsten6
1Department of Animal Behaviour, Bielefeld University, Bielefeld, Germany; Evolutionary Biology, Bielefeld University, Bielefeld, Germany. Electronic address: navina.lilie@uni-bielefeld.de.
2Department of Animal Behaviour, Bielefeld University, Bielefeld, Germany.
3Evolutionary Biology, Bielefeld University, Bielefeld, Germany.
4Department of Behavioural Biology, University of Münster, Münster, Germany; Joint Institute for Individualisation in a Changing Environment (JICE), University of Münster and Bielefeld University, Bielefeld, Germany.
5Evolutionary Biology, Bielefeld University, Bielefeld, Germany; Joint Institute for Individualisation in a Changing Environment (JICE), University of Münster and Bielefeld University, Bielefeld, Germany.
6Department of Animal Behaviour, Bielefeld University, Bielefeld, Germany; Department of Life Sciences, Aberystwyth University, Aberystwyth, United Kingdom. Electronic address: pek19@aber.ac.uk.
Abstract
Extra-pair paternity is prevalent in socially monogamous bird species with biparental care. Male extra-pair matings may coincide with paternal care provisioned to within-pair offspring. This may lead to a trade-off between obtaining additional fertilizations and securing offspring growth and survival through paternal care. In this pre-registered study, we manipulated the social environment of zebr…
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