% pubman genre = article
@article{item_3652870,
title = {{Dominance rank, facial morphology and testes size in male white-faced capuchins: evidence 2 for pre- and post-mating competition}},
author = {Chapoy, Nicholas and Alvarez-Garita, Marcos and Howard, Evelyn and Insausti, Blanca Cejalvo and Kulick, Nelle K. and Marinaro, Mercedes and Mendez, Hubert A. and Morales, Suheidy Romero and Petersdorf, Megan and Poirier, Alice C. and Sandoval, Robinson and Severino, Giulia and Arias, Wendy T{\'e}llez and Widdig, Anja and Melin, Amanda D. and Jack, Katharine M.},
language = {eng},
issn = {0962-8452; 1471-2954},
doi = {10.1098/rspb.2025.0645},
publisher = {Royal Society},
address = {London},
year = {2025},
date = {2025-08},
abstract = {{Male reproductive success is determined by the interplay of female mate choice and male-male competition, often linked to dominance rank in social animals. Across taxa, elaborate ornaments, such as bright coloration or large antlers, often function as badges of status, signaling male competitive ability to rivals. In species where females mate with multiple males, post-mating sperm competition also plays an important role in male reproductive success and is associated with larger relative testes size. We investigate the relationship between morphological features and dominance rank in wild male white-faced capuchins. Using parallel-laser photogrammetry, we measured aspects of facial morphology, including facial width-to-height ratio, and testes size. We found that alpha males had significantly larger facial width-to-height ratios, wider faces, and wider scrota than subordinate males. These results suggest that facial traits potentially function as badges of status in male white-faced capuchins and may play a role in pre-mating competition and/or mate choice, while differences in scrotal size reflect adaptations for post-mating competition. This study highlights the underrecognized role of facial trait evolution in sexual selection among relatively gracile yet highly visually oriented mammals and highlights the potential variability of sexual traits in species characterized by strong reproductive skew among males}},
journal = {{Proceedings of the Royal Society B: Biological Sciences}},
volume = {292},
number = {2053},
}