Tree hybridization and genotypic variation drive cryptic speciation of a specialist mite herbivore.
Identifieur interne : 003808 ( Main/Curation ); précédent : 003807; suivant : 003809Tree hybridization and genotypic variation drive cryptic speciation of a specialist mite herbivore.
Auteurs : Luke M. Evans [États-Unis] ; Gerard J. Allan ; Stephen M. Shuster ; Scott A. Woolbright ; Thomas G. WhithamSource :
- Evolution; international journal of organic evolution [ 1558-5646 ] ; 2008.
Descripteurs français
- KwdFr :
- Amorces ADN (génétique), Analyse de regroupements (MeSH), Analyse de séquence d'ADN (MeSH), Analyse de variance (MeSH), Animaux (MeSH), Croisements génétiques (MeSH), Données de séquences moléculaires (MeSH), Génétique des populations (MeSH), Géographie (MeSH), Hybridation génétique (MeSH), Interactions hôte-parasite (MeSH), Mites (acariens) (anatomie et histologie), Mites (acariens) (génétique), Phylogenèse (MeSH), Populus (génétique), Populus (parasitologie), Séquence nucléotidique (MeSH), Utah (MeSH), Variation génétique (MeSH).
- MESH :
- anatomie et histologie : Mites (acariens).
- génétique : Amorces ADN, Mites (acariens), Populus.
- parasitologie : Populus.
- Analyse de regroupements, Analyse de séquence d'ADN, Analyse de variance, Animaux, Croisements génétiques, Données de séquences moléculaires, Génétique des populations, Géographie, Hybridation génétique, Interactions hôte-parasite, Phylogenèse, Séquence nucléotidique, Utah, Variation génétique.
English descriptors
- KwdEn :
- Analysis of Variance (MeSH), Animals (MeSH), Base Sequence (MeSH), Cluster Analysis (MeSH), Crosses, Genetic (MeSH), DNA Primers (genetics), Genetic Variation (MeSH), Genetics, Population (MeSH), Geography (MeSH), Host-Parasite Interactions (MeSH), Hybridization, Genetic (MeSH), Mites (anatomy & histology), Mites (genetics), Molecular Sequence Data (MeSH), Phylogeny (MeSH), Populus (genetics), Populus (parasitology), Sequence Analysis, DNA (MeSH), Utah (MeSH).
- MESH :
- chemical , genetics : DNA Primers.
- geographic : Utah.
- anatomy & histology : Mites.
- genetics : Mites, Populus.
- parasitology : Populus.
- Analysis of Variance, Animals, Base Sequence, Cluster Analysis, Crosses, Genetic, Genetic Variation, Genetics, Population, Geography, Host-Parasite Interactions, Hybridization, Genetic, Molecular Sequence Data, Phylogeny, Sequence Analysis, DNA.
Abstract
Few studies have investigated the roles that plant hybridization and individual plant genotype play in promoting population divergence within arthropod species. Using nrDNA sequence information and reciprocal transfer experiments, we examined how tree cross type (i.e., pure Populus angustifolia and P. angustifolia x P. fremontii F(1) type hybrids) and individual tree genotype influence host race formation in the bud-galling mite Aceria parapopuli. Three main findings emerged: (1) Strong genetic differentiation of mite populations found on pure P. angustifolia and F(1) type hybrids indicates that these mites represent morphologically cryptic species. (2) Within the F(1) type hybrids, population genetic analyses indicate migration among individual trees; however, (3) transfer experiments show that the mites found on heavily infested F(1) type trees perform best on their natal host genotype, suggesting that genetic interactions between mites and their host trees drive population structure, local adaptation, and host race formation. These findings argue that hybridization and genotypic differences in foundation tree species may drive herbivore population structure, and have evolutionary consequences for dependent arthropod species.
DOI: 10.1111/j.1558-5646.2008.00497.x
PubMed: 18752612
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pubmed:18752612Le document en format XML
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<affiliation wicri:level="1"><nlm:affiliation>Department of Biological Sciences, Environmental Genetics and Genomics Laboratory, Merriam-Powell Center for Environmental Research, Northern Arizona University, Flagstaff, Arizona 86011, USA. lme36@nau.edu</nlm:affiliation>
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<wicri:regionArea>Department of Biological Sciences, Environmental Genetics and Genomics Laboratory, Merriam-Powell Center for Environmental Research, Northern Arizona University, Flagstaff, Arizona 86011</wicri:regionArea>
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<term>Crosses, Genetic (MeSH)</term>
<term>DNA Primers (genetics)</term>
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<term>Geography (MeSH)</term>
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<term>Analyse de variance (MeSH)</term>
<term>Animaux (MeSH)</term>
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<term>Données de séquences moléculaires (MeSH)</term>
<term>Génétique des populations (MeSH)</term>
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<term>Hybridation génétique (MeSH)</term>
<term>Interactions hôte-parasite (MeSH)</term>
<term>Mites (acariens) (anatomie et histologie)</term>
<term>Mites (acariens) (génétique)</term>
<term>Phylogenèse (MeSH)</term>
<term>Populus (génétique)</term>
<term>Populus (parasitologie)</term>
<term>Séquence nucléotidique (MeSH)</term>
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<term>Sequence Analysis, DNA</term>
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<front><div type="abstract" xml:lang="en">Few studies have investigated the roles that plant hybridization and individual plant genotype play in promoting population divergence within arthropod species. Using nrDNA sequence information and reciprocal transfer experiments, we examined how tree cross type (i.e., pure Populus angustifolia and P. angustifolia x P. fremontii F(1) type hybrids) and individual tree genotype influence host race formation in the bud-galling mite Aceria parapopuli. Three main findings emerged: (1) Strong genetic differentiation of mite populations found on pure P. angustifolia and F(1) type hybrids indicates that these mites represent morphologically cryptic species. (2) Within the F(1) type hybrids, population genetic analyses indicate migration among individual trees; however, (3) transfer experiments show that the mites found on heavily infested F(1) type trees perform best on their natal host genotype, suggesting that genetic interactions between mites and their host trees drive population structure, local adaptation, and host race formation. These findings argue that hybridization and genotypic differences in foundation tree species may drive herbivore population structure, and have evolutionary consequences for dependent arthropod species.</div>
</front>
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<Abstract><AbstractText>Few studies have investigated the roles that plant hybridization and individual plant genotype play in promoting population divergence within arthropod species. Using nrDNA sequence information and reciprocal transfer experiments, we examined how tree cross type (i.e., pure Populus angustifolia and P. angustifolia x P. fremontii F(1) type hybrids) and individual tree genotype influence host race formation in the bud-galling mite Aceria parapopuli. Three main findings emerged: (1) Strong genetic differentiation of mite populations found on pure P. angustifolia and F(1) type hybrids indicates that these mites represent morphologically cryptic species. (2) Within the F(1) type hybrids, population genetic analyses indicate migration among individual trees; however, (3) transfer experiments show that the mites found on heavily infested F(1) type trees perform best on their natal host genotype, suggesting that genetic interactions between mites and their host trees drive population structure, local adaptation, and host race formation. These findings argue that hybridization and genotypic differences in foundation tree species may drive herbivore population structure, and have evolutionary consequences for dependent arthropod species.</AbstractText>
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