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Evolution of life histories along elevational gradients: Trade-off between parental care and fecundity


Metadata FieldValueLanguage
dc.creatorBadyaev, Alexander V.
dc.creatorGhalambor, Cameron K.
dc.date.accessioned2020-04-20T20:49:06Z
dc.date.available2020-04-20T20:49:06Z
dc.date.created2001
dc.identifier10.1890/0012-9658(2001)082[2948:EOLHAE]2.0.CO;2en_US
dc.identifier.urihttps://esajournals.onlinelibrary.wiley.com/doi/full/10.1890/0012-9658%282001%29082%5B2948%3AEOLHAE%5D2.0.CO%3B2en_US
dc.identifier.urihttp://hdl.handle.net/11200/49791
dc.description.abstractLife history responses to environmental conditions include a combination of fecundity-survival schedules and behavioral strategies that yield the highest fitness in a given environment. In this study, we examined the pattern of covariation in avian life history strategies along an elevational gradient by comparing variation in life history traits, including most components of parental care, between phylogenetically paired taxa from low- and high-elevation sites. We found that high-elevation species had significantly lower annual fecundity but provided greater parental care to their offspring. However, a strong negative relationship between offspring number and duration of parental care along the elevational gradient suggested that high-elevation species were shifting investment from offspring number toward offspring quality. Although adult survival did not differ between high- and low-elevation species, higher juvenile survival may have compensated for lower annual fecundity in high-elevation species. The elevation at which breeding occurred strongly influenced the partitioning of parental behavior between sexes. Male participation in nestling provisioning was significantly greater in high-elevation species. In turn, altitudinal variation in the frequency of biparental care closely covaries with the intensity of sexual selection, ultimately resulting in the strong elevational pattern of sexual dimorphism. Moreover, elevational variation in costs of development and maintenance of secondary sexual traits constitutes an additional effect on fecundity-survival schedules along elevational gradients. Thus, a trade-off between fecundity and parental care, and associated interactions among morphological, life history, and behavioral traits play important roles in the evolution of life history strategies in birds.en_US
dc.formatPDFen_US
dc.relation.ispartofEcologyen_US
dc.relation.ispartofseries1939-9170en_US
dc.rights© 2001. This is the version of record published by John Wiley & Sons, Inc. and is made available under the CC-BY-NC-ND 4.0 license. Item should be cited as: Badyaev, A. V., & Ghalambor, C. K. (2001). Evolution of life histories along elevational gradients: trade‐off between parental care and fecundity. Ecology, 82(10), 2948-2960.en_US
dc.subjectbirdsen_US
dc.subjectbreeding elevationen_US
dc.subjectenvironmental gradienten_US
dc.subjectfecundityen_US
dc.subjectlife historyen_US
dc.subjectnest predationen_US
dc.subjectparental careen_US
dc.subjectsexual dimorphismen_US
dc.subjecttrade-offsen_US
dc.titleEvolution of life histories along elevational gradients: Trade-off between parental care and fecundityen_US
dc.typeCollectionen_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume82en_US
dc.citation.issue10en_US
dc.citation.spage2948en_US
dc.citation.epage2960en_US
dc.description.statusPublisheden_US
dc.description.peerreviewYesen_US

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