Environmental induction and phenotypic retention of adaptive maternal effects

Persistent Link:
http://hdl.handle.net/10150/610376
Title:
Environmental induction and phenotypic retention of adaptive maternal effects
Author:
Badyaev, Alexander; Oh, Kevin
Affiliation:
Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA
Issue Date:
2008
Publisher:
BioMed Central
Citation:
BMC Evolutionary Biology 2008, 8:3 doi:10.1186/1471-2148-8-3
Journal:
BMC Evolutionary Biology
Rights:
© 2008 Badyaev and Oh; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0)
Collection Information:
This item is part of the UA Faculty Publications collection. For more information this item or other items in the UA Campus Repository, contact the University of Arizona Libraries at repository@u.library.arizona.edu.
Abstract:
BACKGROUND:The origin of complex adaptations is one of the most controversial questions in biology. Environmental induction of novel phenotypes, where phenotypic retention of adaptive developmental variation is enabled by organismal complexity and homeostasis, can be a starting point in the evolution of some adaptations, but empirical examples are rare. Comparisons of populations that differ in historical recurrence of environmental induction can offer insight into its evolutionary significance, and recent colonization of North America by the house finch (Carpodacus mexicanus) provides such an opportunity.RESULTS:In both native (southern Arizona) and newly established (northern Montana, 18 generations) populations, breeding female finches exhibit the same complex adaptation - a sex-bias in ovulation sequence - in response to population-specific environmental stimulus of differing recurrence. We document that, in the new population, the adaptation is induced by a novel environment during females' first breeding and is subsequently retained across breeding attempts. In the native population, first-breeding females expressed a precise adaptive response to a recurrent environmental stimulus without environmental induction. We document strong selection on environmental cue recognition in both populations and find that rearrangement of the same proximate mechanism - clustering of oocytes that become males and females - can enable an adaptive response to distinct environmental stimuli.CONCLUSION:The results show that developmental plasticity induced by novel environmental conditions confers significant fitness advantages to both maternal and offspring generations and might play an important role not only in the successful establishment of this invasive species across the widest ecological range of extant birds, but also can link environmental induction and genetic inheritance in the evolution of novel adaptations.
EISSN:
1471-2148
DOI:
10.1186/1471-2148-8-3
Version:
Final published version
Additional Links:
http://www.biomedcentral.com/1471-2148/8/3

Full metadata record

DC FieldValue Language
dc.contributor.authorBadyaev, Alexanderen
dc.contributor.authorOh, Kevinen
dc.date.accessioned2016-05-20T09:05:25Z-
dc.date.available2016-05-20T09:05:25Z-
dc.date.issued2008en
dc.identifier.citationBMC Evolutionary Biology 2008, 8:3 doi:10.1186/1471-2148-8-3en
dc.identifier.doi10.1186/1471-2148-8-3en
dc.identifier.urihttp://hdl.handle.net/10150/610376-
dc.description.abstractBACKGROUND:The origin of complex adaptations is one of the most controversial questions in biology. Environmental induction of novel phenotypes, where phenotypic retention of adaptive developmental variation is enabled by organismal complexity and homeostasis, can be a starting point in the evolution of some adaptations, but empirical examples are rare. Comparisons of populations that differ in historical recurrence of environmental induction can offer insight into its evolutionary significance, and recent colonization of North America by the house finch (Carpodacus mexicanus) provides such an opportunity.RESULTS:In both native (southern Arizona) and newly established (northern Montana, 18 generations) populations, breeding female finches exhibit the same complex adaptation - a sex-bias in ovulation sequence - in response to population-specific environmental stimulus of differing recurrence. We document that, in the new population, the adaptation is induced by a novel environment during females' first breeding and is subsequently retained across breeding attempts. In the native population, first-breeding females expressed a precise adaptive response to a recurrent environmental stimulus without environmental induction. We document strong selection on environmental cue recognition in both populations and find that rearrangement of the same proximate mechanism - clustering of oocytes that become males and females - can enable an adaptive response to distinct environmental stimuli.CONCLUSION:The results show that developmental plasticity induced by novel environmental conditions confers significant fitness advantages to both maternal and offspring generations and might play an important role not only in the successful establishment of this invasive species across the widest ecological range of extant birds, but also can link environmental induction and genetic inheritance in the evolution of novel adaptations.en
dc.language.isoenen
dc.publisherBioMed Centralen
dc.relation.urlhttp://www.biomedcentral.com/1471-2148/8/3en
dc.rights© 2008 Badyaev and Oh; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0)en
dc.titleEnvironmental induction and phenotypic retention of adaptive maternal effectsen
dc.typeArticleen
dc.identifier.eissn1471-2148en
dc.contributor.departmentDepartment of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USAen
dc.identifier.journalBMC Evolutionary Biologyen
dc.description.collectioninformationThis item is part of the UA Faculty Publications collection. For more information this item or other items in the UA Campus Repository, contact the University of Arizona Libraries at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
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