Effects of known age on male paternity in a migratory songbird
Many avian studies have shown that reproductive performance improves with age, but little is known about how key components of male fitness, extrapair and within pair paternity, vary across life spans. We tested for age effects on male paternity in purple martins ( Progne subis ) using cross-section...
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fthighwire:oai:open-archive.highwire.org:beheco:arr188v1 2023-05-15T15:34:41+02:00 Effects of known age on male paternity in a migratory songbird Tarof, Scott A. Kramer, Patrick M. Tautin, John Stutchbury, Bridget J. M. 2011-11-17 10:45:04.0 text/html http://beheco.oxfordjournals.org/cgi/content/short/arr188v1 https://doi.org/10.1093/beheco/arr188 en eng Oxford University Press http://beheco.oxfordjournals.org/cgi/content/short/arr188v1 http://dx.doi.org/10.1093/beheco/arr188 Copyright (C) 2011, International Society for Behavioral Ecology Original article TEXT 2011 fthighwire https://doi.org/10.1093/beheco/arr188 2016-11-16T18:36:43Z Many avian studies have shown that reproductive performance improves with age, but little is known about how key components of male fitness, extrapair and within pair paternity, vary across life spans. We tested for age effects on male paternity in purple martins ( Progne subis ) using cross-sectional analyses of known-aged males (1–9 years old) and longitudinal analyses of individuals sampled in 2 successive years. Microsatellite analyses found that 137 of 297 (46%) nests contained extrapair offspring and 273 of 1235 (22%) offspring were extrapair. Using a subsample of unique known-aged males ( n = 160), we found significant linear and nonlinear effects of male age on the number of within pair offspring and, to a lesser extent, on the number of extrapair offspring sired. Male genetic reproductive success increased with age to 3 years and then leveled off. In longitudinal comparisons of known age males sampled in successive years ( n = 41), within pair offspring increased with age, even for males ≥2 years old. Paired comparisons ( n = 74) found that extrapair sires were older than the males they cuckolded, and that first-year males were significantly underrepresented as extrapair sires given the known age distribution in the population. Poor genetic reproductive performance in younger males is likely constrained through male–male competition during mate guarding and female choice for older males. Text Avian Studies HighWire Press (Stanford University) Behavioral Ecology 23 2 313 321 |
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Original article |
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Original article Tarof, Scott A. Kramer, Patrick M. Tautin, John Stutchbury, Bridget J. M. Effects of known age on male paternity in a migratory songbird |
topic_facet |
Original article |
description |
Many avian studies have shown that reproductive performance improves with age, but little is known about how key components of male fitness, extrapair and within pair paternity, vary across life spans. We tested for age effects on male paternity in purple martins ( Progne subis ) using cross-sectional analyses of known-aged males (1–9 years old) and longitudinal analyses of individuals sampled in 2 successive years. Microsatellite analyses found that 137 of 297 (46%) nests contained extrapair offspring and 273 of 1235 (22%) offspring were extrapair. Using a subsample of unique known-aged males ( n = 160), we found significant linear and nonlinear effects of male age on the number of within pair offspring and, to a lesser extent, on the number of extrapair offspring sired. Male genetic reproductive success increased with age to 3 years and then leveled off. In longitudinal comparisons of known age males sampled in successive years ( n = 41), within pair offspring increased with age, even for males ≥2 years old. Paired comparisons ( n = 74) found that extrapair sires were older than the males they cuckolded, and that first-year males were significantly underrepresented as extrapair sires given the known age distribution in the population. Poor genetic reproductive performance in younger males is likely constrained through male–male competition during mate guarding and female choice for older males. |
format |
Text |
author |
Tarof, Scott A. Kramer, Patrick M. Tautin, John Stutchbury, Bridget J. M. |
author_facet |
Tarof, Scott A. Kramer, Patrick M. Tautin, John Stutchbury, Bridget J. M. |
author_sort |
Tarof, Scott A. |
title |
Effects of known age on male paternity in a migratory songbird |
title_short |
Effects of known age on male paternity in a migratory songbird |
title_full |
Effects of known age on male paternity in a migratory songbird |
title_fullStr |
Effects of known age on male paternity in a migratory songbird |
title_full_unstemmed |
Effects of known age on male paternity in a migratory songbird |
title_sort |
effects of known age on male paternity in a migratory songbird |
publisher |
Oxford University Press |
publishDate |
2011 |
url |
http://beheco.oxfordjournals.org/cgi/content/short/arr188v1 https://doi.org/10.1093/beheco/arr188 |
genre |
Avian Studies |
genre_facet |
Avian Studies |
op_relation |
http://beheco.oxfordjournals.org/cgi/content/short/arr188v1 http://dx.doi.org/10.1093/beheco/arr188 |
op_rights |
Copyright (C) 2011, International Society for Behavioral Ecology |
op_doi |
https://doi.org/10.1093/beheco/arr188 |
container_title |
Behavioral Ecology |
container_volume |
23 |
container_issue |
2 |
container_start_page |
313 |
op_container_end_page |
321 |
_version_ |
1766364990993858560 |