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Indirect evidence of an early mating advantage in wild cooperatively breeding male banded mongooses

Graham Birch, Michael A. Cant, Hazel Nichols Orcid Logo, Magali Meniri, Robert Businge, Francis Mwanguhya, Jonathan D. Blount

Scientific Reports, Volume: 15, Issue: 1, Start page: 1434

Swansea University Author: Hazel Nichols Orcid Logo

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Abstract

Promiscuous females reduce male reproductive control. Males can attempt to monopolise access to these females, but distractions and sneaky rivals mean extra copulations cannot always be blocked. By mating first, males can obtain a headstart in sperm competition, but this may be negated by sperm stor...

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Published in: Scientific Reports
ISSN: 2045-2322
Published: Springer Nature 2025
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URI: https://cronfa.swan.ac.uk/Record/cronfa68672
Abstract: Promiscuous females reduce male reproductive control. Males can attempt to monopolise access to these females, but distractions and sneaky rivals mean extra copulations cannot always be blocked. By mating first, males can obtain a headstart in sperm competition, but this may be negated by sperm storage and cryptic female choice mechanisms. We carry out an indirect rare test of an early mating advantage in a population of free-living wild animals. Using Bayesian GLMM analysis of a long-term life history database spanning 17 years, we show that banded mongoose males who interacted with females in earlier days of oestrus had a higher chance of siring their offspring compared with later rivals. An early mating advantage would intensify initial male-male competition and hence selection for male choice, as any initial mistake identifying preferred mating partners could see paternity lost to rivals.
Keywords: Cooperative breeder, Mate competition, Sperm competition, Polyandry, Paternity, Sperm precedence, Copulatory plug
College: Faculty of Science and Engineering
Funders: G.B received funding from NERC GW4 + (grant no. NE/S007504/1). Data collection has been funded by a ERC Consolidator (SOCODEV, grant number 309249) and NERC (UK) Standard Grants (NE/E015441/1; NE/J010278/1) awarded to M.C. and NE/N011171 awarded to J.B and M.C. The funders had no role in study design, data collection and analysis, decision to publish or preparation of the manuscript.
Issue: 1
Start Page: 1434