Breeding biology and variable mating system of a population of introduced dunnocks (Prunella modularis) in New Zealand.

Species with variable mating systems provide a unique opportunity to investigate whether females receive direct fitness benefits from additional male partners. The direct benefits provide an obvious explanation for why females would breed polyandrously, in a situation where males clearly do not atta...

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Autores principales:	Eduardo S A Santos, Shinichi Nakagawa
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6252d4008386463e913d5319e3e9781f
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spelling	oai:doaj.org-article:6252d4008386463e913d5319e3e9781f2021-11-18T07:38:01ZBreeding biology and variable mating system of a population of introduced dunnocks (Prunella modularis) in New Zealand.1932-620310.1371/journal.pone.0069329https://doaj.org/article/6252d4008386463e913d5319e3e9781f2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23874945/?tool=EBIhttps://doaj.org/toc/1932-6203Species with variable mating systems provide a unique opportunity to investigate whether females receive direct fitness benefits from additional male partners. The direct benefits provide an obvious explanation for why females would breed polyandrously, in a situation where males clearly do not attain their optimal reproductive success. Evidence for these direct benefits is, however, mixed. Here, we present a detailed study of the breeding biology of the dunnock, Prunella modularis, which inform an investigation into the effects of the social mating system on the reproductive success in a population of dunnocks in Southern New Zealand. We studied 80 different social groups over the course of three breeding seasons. Dunnocks in our population presented a variable mating system, with socially monogamous (45%), socially polyandrous (54%) and socially polygynandrous (1%) groups being observed in the same breeding season. We did not observe any polygynous social units in our study period although polygyny exists in the population. We found little difference in the numbers of eggs laid, and egg volume between monogamous and polyandrous nests. However, polyandrous groups had better hatching and fledging success than monogamous groups (composite d = 0.385, 95% CI: 0.307 to 0.463). Overall our results support the notion that polyandry is beneficial for females.Eduardo S A SantosShinichi NakagawaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 7, p e69329 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Eduardo S A Santos Shinichi Nakagawa Breeding biology and variable mating system of a population of introduced dunnocks (Prunella modularis) in New Zealand.
description	Species with variable mating systems provide a unique opportunity to investigate whether females receive direct fitness benefits from additional male partners. The direct benefits provide an obvious explanation for why females would breed polyandrously, in a situation where males clearly do not attain their optimal reproductive success. Evidence for these direct benefits is, however, mixed. Here, we present a detailed study of the breeding biology of the dunnock, Prunella modularis, which inform an investigation into the effects of the social mating system on the reproductive success in a population of dunnocks in Southern New Zealand. We studied 80 different social groups over the course of three breeding seasons. Dunnocks in our population presented a variable mating system, with socially monogamous (45%), socially polyandrous (54%) and socially polygynandrous (1%) groups being observed in the same breeding season. We did not observe any polygynous social units in our study period although polygyny exists in the population. We found little difference in the numbers of eggs laid, and egg volume between monogamous and polyandrous nests. However, polyandrous groups had better hatching and fledging success than monogamous groups (composite d = 0.385, 95% CI: 0.307 to 0.463). Overall our results support the notion that polyandry is beneficial for females.
format	article
author	Eduardo S A Santos Shinichi Nakagawa
author_facet	Eduardo S A Santos Shinichi Nakagawa
author_sort	Eduardo S A Santos
title	Breeding biology and variable mating system of a population of introduced dunnocks (Prunella modularis) in New Zealand.
title_short	Breeding biology and variable mating system of a population of introduced dunnocks (Prunella modularis) in New Zealand.
title_full	Breeding biology and variable mating system of a population of introduced dunnocks (Prunella modularis) in New Zealand.
title_fullStr	Breeding biology and variable mating system of a population of introduced dunnocks (Prunella modularis) in New Zealand.
title_full_unstemmed	Breeding biology and variable mating system of a population of introduced dunnocks (Prunella modularis) in New Zealand.
title_sort	breeding biology and variable mating system of a population of introduced dunnocks (prunella modularis) in new zealand.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/6252d4008386463e913d5319e3e9781f
work_keys_str_mv	AT eduardosasantos breedingbiologyandvariablematingsystemofapopulationofintroduceddunnocksprunellamodularisinnewzealand AT shinichinakagawa breedingbiologyandvariablematingsystemofapopulationofintroduceddunnocksprunellamodularisinnewzealand
_version_	1718423163944042496

Breeding biology and variable mating system of a population of introduced dunnocks (Prunella modularis) in New Zealand.

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