Full lifetime perspectives on the costs and benefits of lay-date variation in tree swallows.

Autor: Winkler DW; Department of Ecology and Evolutionary Biology and Museum of Vertebrates, Cornell University, Ithaca, New York, 14853, USA.; Cornell Lab of Ornithology, 159 Sapsucker Woods Road, Ithaca, New York, 14850, USA., Hallinger KK; Department of Ecology and Evolutionary Biology and Museum of Vertebrates, Cornell University, Ithaca, New York, 14853, USA.; Cornell Lab of Ornithology, 159 Sapsucker Woods Road, Ithaca, New York, 14850, USA., Pegan TM; Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan, 48014, USA., Taff CC; Department of Ecology and Evolutionary Biology and Museum of Vertebrates, Cornell University, Ithaca, New York, 14853, USA.; Cornell Lab of Ornithology, 159 Sapsucker Woods Road, Ithaca, New York, 14850, USA., Verhoeven MA; Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences, University of Groningen, P.O. Box 11103, Groningen, 9700 CC, The Netherlands., Chang van Oordt D; Department of Ecology and Evolutionary Biology and Museum of Vertebrates, Cornell University, Ithaca, New York, 14853, USA.; Cornell Lab of Ornithology, 159 Sapsucker Woods Road, Ithaca, New York, 14850, USA., Stager M; Ecology and Evolution, University of Montana, Missoula, Montana, 59812, USA., Uehling JJ; Department of Ecology and Evolutionary Biology and Museum of Vertebrates, Cornell University, Ithaca, New York, 14853, USA.; Cornell Lab of Ornithology, 159 Sapsucker Woods Road, Ithaca, New York, 14850, USA., Vitousek MN; Department of Ecology and Evolutionary Biology and Museum of Vertebrates, Cornell University, Ithaca, New York, 14853, USA.; Cornell Lab of Ornithology, 159 Sapsucker Woods Road, Ithaca, New York, 14850, USA., Andersen MJ; Museum of Southwestern Biology & Department of Biology, University of New Mexico, Albuquerque, New Mexico, 87131, USA., Ardia DR; Department of Biology, Franklin & Marshall College, Lancaster, Pennsylvania, 17603, USA., Belmaker A; The Steinhardt Museum of Natural History, Tel Aviv University, Tel Aviv, 6901127, Israel., Ferretti V; Instituto de Ecología, Genética y Evolución, CONICET, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, C1428EGA CABA, Argentina., Forsman AM; Department of Biology, Genomics & Bioinformatics Cluster, University of Central Florida, Orlando, Florida, 32816, USA., Gaul JR; International High School at La Guardia Community College, Long Island City, New York, 11101, USA., Llambias PE; Biología de Aves - IADIZA-CONICET, Av. Ruiz Leal s/n, Parque General San Martin, Mendoza, 5500, Argentina., Orzechowski SC; Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, 02138, USA., Shipley JR; Max Planck Institute for Animal Behavior, Radolfzell, 78315, Germany., Wilson M; Department of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 24061, USA., Yoon HS; Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Tennessee, 37996, USA.
Jazyk: angličtina
Zdroj: Ecology [Ecology] 2020 Sep; Vol. 101 (9), pp. e03109. Date of Electronic Publication: 2020 Jul 08.
DOI: 10.1002/ecy.3109
Abstrakt: Animals must balance various costs and benefits when deciding when to breed. The costs and benefits of breeding at different times have received much attention, but most studies have been limited to investigating short-term season-to-season fitness effects. However, breeding early, versus late, in a season may influence lifetime fitness over many years, trading off in complex ways across the breeder's lifespan. In this study, we examined the complete life histories of 867 female tree swallows (Tachycineta bicolor) breeding in Ithaca, New York, between 2002 and 2016. Earlier breeders outperformed later breeders in short-term measures of reproductive output and offspring quality. Though there were weak indications that females paid long-term future survival costs for breeding early, lifetime fledgling output was markedly higher overall in early-breeding birds. Importantly, older females breeding later in the season did not experience compensating life history advantages that suggested an alternative equal-fitness breeding strategy. Rather, most or all of the swallows appear to be breeding as early as they can, and differences in lay dates appear to be determined primarily by differences in individual quality or condition. Lay date had a significant repeatability across breeding attempts by the same female, and the first lay date of females fledged in our population was strongly influenced by the first lay date of their mothers, indicating the potential for ongoing selection on lay date. By examining performance over the entire lifespan of a large number of individuals, we were able to clarify the relationship between timing of breeding and fitness and gain new insight into the sources of variability in this important life history trait.
(© 2020 by the Ecological Society of America.)
Databáze: MEDLINE
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