Latitudinal differences in life-history traits and parental care in northern and southern temperate zone House Wrens

South temperate songbirds differ from north temperate species in life-history traits, having greater adult survival, smaller clutch size, longer developmental periods and extended parental care. Due to its broad distribution, the House Wren, Troglodytes aedon, is an excellent model to evaluate selec...

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Autores principales: Llambías, P.E., Carro, M.E., Fernández, G.J.
Formato: JOUR
Materias:
Breeding biology
House wren
Life-history traits
Parental care
body mass
clutch size
latitudinal gradient
life history trait
parental care
parental investment
reproductive biology
songbird
survival
temperate environment
Central America
Troglodytes
Troglodytes aedon
Troglodytinae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00218375_v156_n4_p933_Llambias
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00218375_v156_n4_p933_Llambias
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spelling todo:paper_00218375_v156_n4_p933_Llambias2023-10-03T14:20:57Z Latitudinal differences in life-history traits and parental care in northern and southern temperate zone House Wrens Llambías, P.E. Carro, M.E. Fernández, G.J. Breeding biology House wren Life-history traits Parental care body mass clutch size latitudinal gradient life history trait parental care parental investment reproductive biology songbird survival temperate environment Central America Troglodytes Troglodytes aedon Troglodytinae South temperate songbirds differ from north temperate species in life-history traits, having greater adult survival, smaller clutch size, longer developmental periods and extended parental care. Due to its broad distribution, the House Wren, Troglodytes aedon, is an excellent model to evaluate selective pressures that may influence the maintenance of present clutch size. Here we report data on life-history traits and parental care of socially monogamous House Wrens from a north temperate and a south temperate population. Southern House Wrens exhibited smaller clutch sizes and longer developmental periods than Northern House Wrens; however, we did not find significant differences in adult survival probability between populations, contrary to a critical prediction of the cost of reproduction hypothesis. Our data did not support the hypothesis that smaller clutches are the consequence of greater food limitation in the south. Southern wrens have greater adult body mass but smaller territories; southern nestlings reached a greater proportion of adult body mass 6–7 days before fledgling, and provisioning rates to the nest per nestling were greater in the south. We did not find support for the hypothesis that reduced clutch size is a consequence of limited parental activity at the nest as southern wrens did not reduce parental care during the incubation and nestling stage. Our data better supports the offspring quality hypothesis; southern wrens invest more per nestling than northern wrens as provisioning rates per nestling were significantly higher and developmental periods longer in the south. Published results from Tropical House Wrens suggest that neither food limitation nor nest predation can explain reduced clutches in Central America. We suggest that south temperate and tropical wrens may differ in parental investment strategies as tropical wrens seem to invest even less per nestling than north temperate wrens. © Dt. Ornithologen-Gesellschaft e.V. 2015. Fil:Llambías, P.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Carro, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fernández, G.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00218375_v156_n4_p933_Llambias
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Breeding biology
House wren
Life-history traits
Parental care
body mass
clutch size
latitudinal gradient
life history trait
parental care
parental investment
reproductive biology
songbird
survival
temperate environment
Central America
Troglodytes
Troglodytes aedon
Troglodytinae
spellingShingle Breeding biology
House wren
Life-history traits
Parental care
body mass
clutch size
latitudinal gradient
life history trait
parental care
parental investment
reproductive biology
songbird
survival
temperate environment
Central America
Troglodytes
Troglodytes aedon
Troglodytinae
Llambías, P.E.
Carro, M.E.
Fernández, G.J.
Latitudinal differences in life-history traits and parental care in northern and southern temperate zone House Wrens
topic_facet Breeding biology
House wren
Life-history traits
Parental care
body mass
clutch size
latitudinal gradient
life history trait
parental care
parental investment
reproductive biology
songbird
survival
temperate environment
Central America
Troglodytes
Troglodytes aedon
Troglodytinae
description South temperate songbirds differ from north temperate species in life-history traits, having greater adult survival, smaller clutch size, longer developmental periods and extended parental care. Due to its broad distribution, the House Wren, Troglodytes aedon, is an excellent model to evaluate selective pressures that may influence the maintenance of present clutch size. Here we report data on life-history traits and parental care of socially monogamous House Wrens from a north temperate and a south temperate population. Southern House Wrens exhibited smaller clutch sizes and longer developmental periods than Northern House Wrens; however, we did not find significant differences in adult survival probability between populations, contrary to a critical prediction of the cost of reproduction hypothesis. Our data did not support the hypothesis that smaller clutches are the consequence of greater food limitation in the south. Southern wrens have greater adult body mass but smaller territories; southern nestlings reached a greater proportion of adult body mass 6–7 days before fledgling, and provisioning rates to the nest per nestling were greater in the south. We did not find support for the hypothesis that reduced clutch size is a consequence of limited parental activity at the nest as southern wrens did not reduce parental care during the incubation and nestling stage. Our data better supports the offspring quality hypothesis; southern wrens invest more per nestling than northern wrens as provisioning rates per nestling were significantly higher and developmental periods longer in the south. Published results from Tropical House Wrens suggest that neither food limitation nor nest predation can explain reduced clutches in Central America. We suggest that south temperate and tropical wrens may differ in parental investment strategies as tropical wrens seem to invest even less per nestling than north temperate wrens. © Dt. Ornithologen-Gesellschaft e.V. 2015.
format JOUR
author Llambías, P.E.
Carro, M.E.
Fernández, G.J.
author_facet Llambías, P.E.
Carro, M.E.
Fernández, G.J.
author_sort Llambías, P.E.
title Latitudinal differences in life-history traits and parental care in northern and southern temperate zone House Wrens
title_short Latitudinal differences in life-history traits and parental care in northern and southern temperate zone House Wrens
title_full Latitudinal differences in life-history traits and parental care in northern and southern temperate zone House Wrens
title_fullStr Latitudinal differences in life-history traits and parental care in northern and southern temperate zone House Wrens
title_full_unstemmed Latitudinal differences in life-history traits and parental care in northern and southern temperate zone House Wrens
title_sort latitudinal differences in life-history traits and parental care in northern and southern temperate zone house wrens
url http://hdl.handle.net/20.500.12110/paper_00218375_v156_n4_p933_Llambias
work_keys_str_mv AT llambiaspe latitudinaldifferencesinlifehistorytraitsandparentalcareinnorthernandsoutherntemperatezonehousewrens
AT carrome latitudinaldifferencesinlifehistorytraitsandparentalcareinnorthernandsoutherntemperatezonehousewrens
AT fernandezgj latitudinaldifferencesinlifehistorytraitsandparentalcareinnorthernandsoutherntemperatezonehousewrens
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