Presentation Details
| Temperature and Social Context Jointly Shape Mating and Parenting in a Wild Mediterranean Fish Louise M.Alissa1, 2, Susan Marsh-Rollo1, 3, Kelly A.Stiver4, Suzanne H.Alonzo1. 1University of California, Santa Cruz, Santa Cruz, California, USA.2Universidade de São Paulo, São Paulo, São Paulo, Brazil.3McMaster University, Hamilton, Ontario, Canada.4Southern Connecticut State University, New Haven, Connecticut, USA |
Abstract
To understand how reproduction will shift in a changing world, we must integrate environmental and social influences on mating and parenting. Using 15 breeding seasons of data on the ocellated wrasse (Symphodus ocellatus), a Mediterranean fish with alternative male tactics and obligate male care, we examined how temperature affects mating opportunities, social interactions, and parental behavior. Elevated temperatures were associated with fewer females and sneaker males per nest, while intermediate temperatures had more individuals with a more skewed distribution among nests. Satellite male presence was not temperature-dependent but was more frequent at nests with many females and sneakers, indicating that cooperation depends more on social context than temperature. Males were more likely to desert at higher temperatures and at nests with fewer females and less satellite male presence. Overall, these results show that warming reduces nest activity, alters social dynamics, and decreases paternal effort. Predicting how animal reproduction changes under environmental change requires linking individual responses to population-level patterns.
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No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
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