Insights on dispersal and recruitment paradigms: sex- and age-dependent variations in a nomadic breeder

Autor: Arnaud Béchet, Nicolas Sadoul, Paul Acker, Agata S. Pijl, Aurélien Besnard, Charlotte Francesiaz, Catherine M. Lessells
Přispěvatelé: Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Université Paul-Valéry - Montpellier 3 (UPVM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut de Recherche pour le Développement (IRD [France-Sud]), Centre de Recherche de la Tour du Valat (CRTV), Les Marais du Vigueirat, Partenaires INRAE, Netherlands Institute for Ecology (NIOO-KNAW), Tour du Valat, non-profit organisation Les Amis du Marais du Vigueirat, MAVA foundation, French Laboratory of Excellence project 'TULIP' (ANR-10-LABX-41), (ANR-11-IDEX-0002-02), ANR-11-IDEX-0002,UNITI,Université Fédérale de Toulouse(2011), Animal Ecology (AnE), Lafarge Centre de Recherche [Lyon] (Lafarge LCR Lyon), Lafarge, Institut de recherche de la Tour du Valat, Les amis du Marais du Viguerat, Laboratoire Bourguignon des Matériaux et Procédés (LABOMAP), Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Oecologia
Oecologia, Springer Verlag, 2018, 186 (1), pp.85-97. ⟨10.1007/s00442-017-3972-7⟩
Oecologia, 186(1), 85-97. Springer Verlag GmbH
Oecologia, Springer Verlag, 2018, 186 (1), pp.85-97
ISSN: 1432-1939
0004-1947
0029-8549
DOI: 10.1007/s00442-017-3972-7⟩
Popis: Correction DOI: 10.1007/s00442-017-4001-6 (WOS:000419477800010); International audience; Sex- and age-dependence in recruitment and dispersal are often explained by costs arising from competition for holding a breeding territory over the years-a typical feature of species living in stable habitats. For instance, long-lived birds with male territoriality often exhibit large variation in recruitment age and higher dispersal in females and young individuals. As a corollary, we expected that species with ephemeral habitat suitability, and hence nomadic breeding, would show weak age- and sex-dependence in dispersal and low variation in recruitment age, because territory ownership is not maintained over the years. In addition, the higher cost of reproduction in females might not be (over)compensated for by costs of territoriality in males. Accordingly, females would recruit later than males. We explored these variations using multievent capture-recapture models over 13 years, 3479 (2392 sexed) slender-billed gulls (Chroicocephalus genei) and 45 colony sites along the French Mediterranean coast. As expected, variability in recruitment age was low with males recruiting earlier than females. Nonetheless, dispersal in and out of the study area decreased with age and was slightly higher in males than in females. Decreased dispersal with age might result from foraging benefits associated with increased spatial familiarity. Higher dispersal in males might be explained by a male-biased sex ratio or higher philopatry benefits in females (arising from their higher cost of reproduction). Sex- and age-dependent dispersal and recruitment may thus occur in the absence of year-to-year breeding territory ownership, which stresses the importance of considering other processes in shaping recruitment and dispersal patterns.
Databáze: OpenAIRE
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