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Hybrid Dysfunction Expressed as Elevated Metabolic Rate in Male Ficedula Flycatchers
Studies of ecological speciation are often biased towards extrinsic sources of selection against hybrids, resulting from intermediate hybrid morphology, but the knowledge of how genetic incompatibilities accumulate over time under natural conditions is limited. Here we focus on a physiological trait...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5008804/ https://www.ncbi.nlm.nih.gov/pubmed/27583553 http://dx.doi.org/10.1371/journal.pone.0161547 |
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author | McFarlane, S. Eryn Sirkiä, Päivi M. Ålund, Murielle Qvarnström, Anna |
author_facet | McFarlane, S. Eryn Sirkiä, Päivi M. Ålund, Murielle Qvarnström, Anna |
author_sort | McFarlane, S. Eryn |
collection | PubMed |
description | Studies of ecological speciation are often biased towards extrinsic sources of selection against hybrids, resulting from intermediate hybrid morphology, but the knowledge of how genetic incompatibilities accumulate over time under natural conditions is limited. Here we focus on a physiological trait, metabolic rate, which is central to life history strategies and thermoregulation but is also likely to be sensitive to mismatched mitonuclear interactions. We measured the resting metabolic rate of male collared, and pied flycatchers as well as of naturally occurring F1 hybrid males, in a recent hybrid zone. We found that hybrid males had a higher rather than intermediate metabolic rate, which is indicative of hybrid physiological dysfunction. Fitness costs associated with elevated metabolic rate are typically environmentally dependent and exaggerated under harsh conditions. By focusing on male hybrid dysfunction in an eco-physiological trait, our results contribute to the general understanding of how combined extrinsic and intrinsic sources of hybrid dysfunction build up under natural conditions. |
format | Online Article Text |
id | pubmed-5008804 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-50088042016-09-27 Hybrid Dysfunction Expressed as Elevated Metabolic Rate in Male Ficedula Flycatchers McFarlane, S. Eryn Sirkiä, Päivi M. Ålund, Murielle Qvarnström, Anna PLoS One Research Article Studies of ecological speciation are often biased towards extrinsic sources of selection against hybrids, resulting from intermediate hybrid morphology, but the knowledge of how genetic incompatibilities accumulate over time under natural conditions is limited. Here we focus on a physiological trait, metabolic rate, which is central to life history strategies and thermoregulation but is also likely to be sensitive to mismatched mitonuclear interactions. We measured the resting metabolic rate of male collared, and pied flycatchers as well as of naturally occurring F1 hybrid males, in a recent hybrid zone. We found that hybrid males had a higher rather than intermediate metabolic rate, which is indicative of hybrid physiological dysfunction. Fitness costs associated with elevated metabolic rate are typically environmentally dependent and exaggerated under harsh conditions. By focusing on male hybrid dysfunction in an eco-physiological trait, our results contribute to the general understanding of how combined extrinsic and intrinsic sources of hybrid dysfunction build up under natural conditions. Public Library of Science 2016-09-01 /pmc/articles/PMC5008804/ /pubmed/27583553 http://dx.doi.org/10.1371/journal.pone.0161547 Text en © 2016 McFarlane et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article McFarlane, S. Eryn Sirkiä, Päivi M. Ålund, Murielle Qvarnström, Anna Hybrid Dysfunction Expressed as Elevated Metabolic Rate in Male Ficedula Flycatchers |
title | Hybrid Dysfunction Expressed as Elevated Metabolic Rate in Male Ficedula Flycatchers |
title_full | Hybrid Dysfunction Expressed as Elevated Metabolic Rate in Male Ficedula Flycatchers |
title_fullStr | Hybrid Dysfunction Expressed as Elevated Metabolic Rate in Male Ficedula Flycatchers |
title_full_unstemmed | Hybrid Dysfunction Expressed as Elevated Metabolic Rate in Male Ficedula Flycatchers |
title_short | Hybrid Dysfunction Expressed as Elevated Metabolic Rate in Male Ficedula Flycatchers |
title_sort | hybrid dysfunction expressed as elevated metabolic rate in male ficedula flycatchers |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5008804/ https://www.ncbi.nlm.nih.gov/pubmed/27583553 http://dx.doi.org/10.1371/journal.pone.0161547 |
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