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University of Groningen

Better together

Groenewoud, Frank

IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite from

it. Please check the document version below.

Document Version

Publisher's PDF, also known as Version of record

Publication date:

2018

Link to publication in University of Groningen/UMCG research database

Citation for published version (APA):

Groenewoud, F. (2018). Better together: Cooperative breeding under environmental heterogeneity.

University of Groningen.

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Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum.

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Better Together

Cooperative breeding under environmental heterogeneity

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The research presented in this thesis was carried out in the Behavioural Physiology and Eco-logy (BPE) group, which is part of the Groningen Institute for Evolutionary Life Sciences (GELIFES) at the University of Groningen and the Behavioural Ecology group at the Univer-sity of Bern, Institute of Ecology and Evolution.

This thesis is financially supported by the Netherlands Organisation for Scientific Rese-arch (NWO-TOP-854.11.003 to JK/DSR; NWO-ALW-823.01.014 to JK), the European Commu-nity’s Sixth Framework Programme (028696 to JK), the Swiss National Science Foundation (310030B_138660 and 31003A_156152 to MT; 31003A_144191 and 31003A_166470 to JGF), the Rektorenkonferenz der Schweizer Universitäten (CRUS) for their contribution within the framework of the “Cotutelles de these” program. Printing was supported by the University of Groningen and the Faculty of Science and Engineering..

ISBN (printed book): 978-94-034-1156-9

ISBN (e-book PDF without DRM): 978-94-034-1155-2

Cover: Tim Holland

Illustration: Jacqueline van Rhijn

Layout: Ilse Modder, www.ilsemodder.nl

Printing: Gildeprint - Enschede, www.gildeprint.nl

© Frank Groenewoud, 2018

For all articles published, the copyright has been transferred to the respective publisher. No part of this thesis may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without written permission from the author or, when appropriate, from the publisher.

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Better Together

Cooperative breeding under environmental heterogeneity

PhD thesis

to obtain the degree of PhD of the University of Groningen

on the authority of the Rector Magnificus Prof. dr. E. Sterken

and in accordance with the decision by the College of Deans.

and

to obtain the degree of PhD of Science in Ecology and Evolution of the University of Bern

on the authority of the Rector Prof. dr. C. Leumann and

the Dean of the Faculty of Science Prof. dr. Z. Balogh.

Double PhD degree

This thesis will be defended in public on Friday 16 November 2018 at 12.45 hours

by

Frank Groenewoud

born on 25 October 1984

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Supervisors

Prof. dr. ir. J. Komdeur Prof. dr. M. Taborsky

Co-supervisors

Dr. S. A. Kingma

Assessment Committee

Prof. dr. I.R. Pen Prof. dr. H. Kokko Prof. dr. S. Alonzo Prof. dr. J.M. Gaillard

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CONTENTS

Chapter 1 General introduction

Chapter 2 Predation risk drives social complexity in cooperative breeders

Chapter 3 Spatio-temporal resource variation, group formation and the benefits of cooperative breeding in the Seychelles warbler

Chapter 4 Subordinate females in the cooperatively breeding Seychelles warbler obtain direct benefits by joining unrelated groups

Chapter 5 Predation risk mediates the benefits of sociality and

suppresses within-group conflict in a cooperatively breeding cichlid fish

Chapter 6 Experimentally induced anti-predator responses are sex specific and mediated by social and environmental factors in a cooperatively breeding passerine

Box A Box A: Anti-predator benefits drive communal breeding in the Seychelles warbler Chapter 7 Synthesis References Nederlandse samenvatting Dankwoord/Acknowledgements 9 23 43 67 87 107 125 131 141 159 169

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