Ecological opportunities and individual condition as predictors of extra-pair paternity in a south-temperate swallow (Tachycineta leucorrhoa)

Ecological and physiological factors such as breeding density, breeding synchrony, and adult body condition can all affect extra-pair mating behavior, but the relative importance of these factors may vary among species. White-rumped Swallows (Tachycineta leucorrhoa) nesting in Buenos Aires Province,...

Descripción completa

Guardado en:
Detalles Bibliográficos
Publicado: 2018
Materias:
body condition
breeding density
breeding synchrony
extra-pair paternity
Hirundinidae
mating system
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02738570_v89_n3_p221_Ferretti
http://hdl.handle.net/20.500.12110/paper_02738570_v89_n3_p221_Ferretti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02738570_v89_n3_p221_Ferretti
record_format dspace
spelling paper:paper_02738570_v89_n3_p221_Ferretti2025-07-30T18:03:43Z Ecological opportunities and individual condition as predictors of extra-pair paternity in a south-temperate swallow (Tachycineta leucorrhoa) body condition breeding density breeding synchrony extra-pair paternity Hirundinidae mating system Ecological and physiological factors such as breeding density, breeding synchrony, and adult body condition can all affect extra-pair mating behavior, but the relative importance of these factors may vary among species. White-rumped Swallows (Tachycineta leucorrhoa) nesting in Buenos Aires Province, Argentina, exhibit high rates of extra-pair paternity, with 77% of nests having extra-pair young. Our objective was to determine the extent to which extra-pair paternity in this species is explained by breeding synchrony, breeding density, and adult body condition. Our study of a population of White-rumped Swallows breeding in nest boxes was conducted during two consecutive breeding seasons (September – early January 2006–2008). We found that neither breeding synchrony nor density of neighbors predicted levels of extra-pair paternity in our study population. Leaner females were more likely to engage in extra-pair behavior and fledged more nestlings, but did not differ in structural size from females that did not engage in extra-pair behavior, suggesting that female mass is an important predictor of mating decisions and fitness for these aerial insectivores. Male body condition was not related to male extra-pair behavior. The mass of female White-rumped Swallows may affect their flying ability such that, during their fertile period, they are exposed to more potential extra-pair mates during longer foraging flights. Being lighter may also improve the ability of females to provision nestlings later in the breeding cycle. © 2018 Association of Field Ornithologists 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02738570_v89_n3_p221_Ferretti http://hdl.handle.net/20.500.12110/paper_02738570_v89_n3_p221_Ferretti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic body condition
breeding density
breeding synchrony
extra-pair paternity
Hirundinidae
mating system
spellingShingle body condition
breeding density
breeding synchrony
extra-pair paternity
Hirundinidae
mating system
Ecological opportunities and individual condition as predictors of extra-pair paternity in a south-temperate swallow (Tachycineta leucorrhoa)
topic_facet body condition
breeding density
breeding synchrony
extra-pair paternity
Hirundinidae
mating system
description Ecological and physiological factors such as breeding density, breeding synchrony, and adult body condition can all affect extra-pair mating behavior, but the relative importance of these factors may vary among species. White-rumped Swallows (Tachycineta leucorrhoa) nesting in Buenos Aires Province, Argentina, exhibit high rates of extra-pair paternity, with 77% of nests having extra-pair young. Our objective was to determine the extent to which extra-pair paternity in this species is explained by breeding synchrony, breeding density, and adult body condition. Our study of a population of White-rumped Swallows breeding in nest boxes was conducted during two consecutive breeding seasons (September – early January 2006–2008). We found that neither breeding synchrony nor density of neighbors predicted levels of extra-pair paternity in our study population. Leaner females were more likely to engage in extra-pair behavior and fledged more nestlings, but did not differ in structural size from females that did not engage in extra-pair behavior, suggesting that female mass is an important predictor of mating decisions and fitness for these aerial insectivores. Male body condition was not related to male extra-pair behavior. The mass of female White-rumped Swallows may affect their flying ability such that, during their fertile period, they are exposed to more potential extra-pair mates during longer foraging flights. Being lighter may also improve the ability of females to provision nestlings later in the breeding cycle. © 2018 Association of Field Ornithologists
title Ecological opportunities and individual condition as predictors of extra-pair paternity in a south-temperate swallow (Tachycineta leucorrhoa)
title_short Ecological opportunities and individual condition as predictors of extra-pair paternity in a south-temperate swallow (Tachycineta leucorrhoa)
title_full Ecological opportunities and individual condition as predictors of extra-pair paternity in a south-temperate swallow (Tachycineta leucorrhoa)
title_fullStr Ecological opportunities and individual condition as predictors of extra-pair paternity in a south-temperate swallow (Tachycineta leucorrhoa)
title_full_unstemmed Ecological opportunities and individual condition as predictors of extra-pair paternity in a south-temperate swallow (Tachycineta leucorrhoa)
title_sort ecological opportunities and individual condition as predictors of extra-pair paternity in a south-temperate swallow (tachycineta leucorrhoa)
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02738570_v89_n3_p221_Ferretti
http://hdl.handle.net/20.500.12110/paper_02738570_v89_n3_p221_Ferretti
_version_ 1840328325911805952

Ejemplares similares