Warm springs, early lay dates, and double brooding in a North American migratory songbird, the black-throated blue warbler.

Numerous studies have correlated the advancement of lay date in birds with warming climate trends, yet the fitness effects associated with this phenological response have been examined in only a small number of species. Most of these species--primarily insectivorous cavity nesters in Europe--exhibit...

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Autores principales:	Andrea K Townsend, T Scott Sillett, Nina K Lany, Sara A Kaiser, Nicholas L Rodenhouse, Michael S Webster, Richard T Holmes
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/61a9e86a25084f2d828d6ea5319d1ea7
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spelling	oai:doaj.org-article:61a9e86a25084f2d828d6ea5319d1ea72021-11-18T07:51:07ZWarm springs, early lay dates, and double brooding in a North American migratory songbird, the black-throated blue warbler.1932-620310.1371/journal.pone.0059467https://doaj.org/article/61a9e86a25084f2d828d6ea5319d1ea72013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23565154/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Numerous studies have correlated the advancement of lay date in birds with warming climate trends, yet the fitness effects associated with this phenological response have been examined in only a small number of species. Most of these species--primarily insectivorous cavity nesters in Europe--exhibit fitness declines associated with increasing asynchrony with prey. Here, we use 25 years of demographic data, collected from 1986 to 2010, to examine the effects of spring temperature on breeding initiation date, double brooding, and annual fecundity in a Nearctic-Neotropical migratory songbird, the black-throated blue warbler (Setophaga caerulescens). Data were collected from birds breeding at the Hubbard Brook Experimental Forest, New Hampshire, USA, where long-term trends toward warmer springs have been recorded. We found that black-throated blue warblers initiated breeding earlier in warmer springs, that early breeders were more likely to attempt a second brood than those starting later in the season, and that double brooding and lay date were linked to higher annual fecundity. Accordingly, we found selection favored earlier breeding in most years. However, in contrast to studies of several other long-distance migratory species in Europe, this selection pressure was not stronger in warmer springs, indicating that these warblers were able to adjust mean lay date appropriately to substantial inter-annual variation in spring temperature. Our results suggest that this North American migratory songbird might not experience the same fecundity declines as songbirds that are unable to adjust their timing of breeding in pace with spring temperatures.Andrea K TownsendT Scott SillettNina K LanySara A KaiserNicholas L RodenhouseMichael S WebsterRichard T HolmesPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 4, p e59467 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Andrea K Townsend T Scott Sillett Nina K Lany Sara A Kaiser Nicholas L Rodenhouse Michael S Webster Richard T Holmes Warm springs, early lay dates, and double brooding in a North American migratory songbird, the black-throated blue warbler.
description	Numerous studies have correlated the advancement of lay date in birds with warming climate trends, yet the fitness effects associated with this phenological response have been examined in only a small number of species. Most of these species--primarily insectivorous cavity nesters in Europe--exhibit fitness declines associated with increasing asynchrony with prey. Here, we use 25 years of demographic data, collected from 1986 to 2010, to examine the effects of spring temperature on breeding initiation date, double brooding, and annual fecundity in a Nearctic-Neotropical migratory songbird, the black-throated blue warbler (Setophaga caerulescens). Data were collected from birds breeding at the Hubbard Brook Experimental Forest, New Hampshire, USA, where long-term trends toward warmer springs have been recorded. We found that black-throated blue warblers initiated breeding earlier in warmer springs, that early breeders were more likely to attempt a second brood than those starting later in the season, and that double brooding and lay date were linked to higher annual fecundity. Accordingly, we found selection favored earlier breeding in most years. However, in contrast to studies of several other long-distance migratory species in Europe, this selection pressure was not stronger in warmer springs, indicating that these warblers were able to adjust mean lay date appropriately to substantial inter-annual variation in spring temperature. Our results suggest that this North American migratory songbird might not experience the same fecundity declines as songbirds that are unable to adjust their timing of breeding in pace with spring temperatures.
format	article
author	Andrea K Townsend T Scott Sillett Nina K Lany Sara A Kaiser Nicholas L Rodenhouse Michael S Webster Richard T Holmes
author_facet	Andrea K Townsend T Scott Sillett Nina K Lany Sara A Kaiser Nicholas L Rodenhouse Michael S Webster Richard T Holmes
author_sort	Andrea K Townsend
title	Warm springs, early lay dates, and double brooding in a North American migratory songbird, the black-throated blue warbler.
title_short	Warm springs, early lay dates, and double brooding in a North American migratory songbird, the black-throated blue warbler.
title_full	Warm springs, early lay dates, and double brooding in a North American migratory songbird, the black-throated blue warbler.
title_fullStr	Warm springs, early lay dates, and double brooding in a North American migratory songbird, the black-throated blue warbler.
title_full_unstemmed	Warm springs, early lay dates, and double brooding in a North American migratory songbird, the black-throated blue warbler.
title_sort	warm springs, early lay dates, and double brooding in a north american migratory songbird, the black-throated blue warbler.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/61a9e86a25084f2d828d6ea5319d1ea7
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Warm springs, early lay dates, and double brooding in a North American migratory songbird, the black-throated blue warbler.

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