Speciation in the asexual realm: Is the parthenogenetic weevil Naupactus cervinus a complex of species in statu nascendi?

Population genetic theory shows that asexual organisms may evolve into species, which behave as independent evolutionary units. As a result, they form genotypic clusters separated by deep gaps due to geographic isolation and/or divergent selection.Identification of several genetically divergent grou...

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Autores principales: Rodriguero, Marcela Silvina, Confalonieri, Viviana Andrea
Publicado: 2013
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Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10557903_v68_n3_p644_Rodriguero
http://hdl.handle.net/20.500.12110/paper_10557903_v68_n3_p644_Rodriguero
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spelling paper:paper_10557903_v68_n3_p644_Rodriguero2023-06-08T16:03:16Z Speciation in the asexual realm: Is the parthenogenetic weevil Naupactus cervinus a complex of species in statu nascendi? Rodriguero, Marcela Silvina Confalonieri, Viviana Andrea Asexuality Curculionidae Divergent selection Geographical isolation Species complex Wolbachia mitochondrial DNA animal Argentina article Brazil classification evolution female genetic variability genetics genotype multilocus sequence typing parthenogenesis phenotype phylogeny physiology weevil Animals Argentina Biological Evolution Brazil DNA, Mitochondrial Female Genetic Variation Genotype Multilocus Sequence Typing Parthenogenesis Phenotype Phylogeny Weevils Curculionidae Entimini Naupactus Wolbachia Population genetic theory shows that asexual organisms may evolve into species, which behave as independent evolutionary units. As a result, they form genotypic clusters separated by deep gaps due to geographic isolation and/or divergent selection.Identification of several genetically divergent groups of weevils embodied in the nominal species Naupactus cervinus deserves further study, in order to test if these lineages are evolving independently. In the present paper we tested if the parthenogenetic weevil N. cervinus, native to South America and broadly distributed throughout the world, contains more than one evolutionary unit. For this purpose, we applied three different approaches, a multilocus phylogenetic analysis, the GMYC approach and the K/. θ method. We accomplished these analyses through a survey of mitochondrial (COI and COII genes) and nuclear (ITS1 sequence) genetic variation and morphometric analysis in a sample which included individuals from different locations within the native geographic range of N. cervinus. In addition, we compared the divergence accumulated in this species with that in another weevil of the same tribe (Naupactini) showing identical reproductive mode to see if similar levels of morphological variation matches similar levels of genetic divergence.We report the presence of two independent evolutionary units living in sympatry in forest areas. The incongruence between mitochondrial and nuclear datasets analyzed herein reflects incomplete lineage sorting of the nuclear marker and different evolutionary rates between genomes.Ecological divergence driven by natural selection (sympatry) or secondary contact after geographic isolation (allopatry) might explain the deep gaps in mitochondrial phylogenies. Instead, Wolbachia infection was ruled out as a causal factor for such differentiation. We conclude that N. cervinus is probably a species complex with at least two well differentiated lineages that would represent a cluster of species in statu nascendi. © 2013 Elsevier Inc. Fil:Rodriguero, M.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Confalonieri, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10557903_v68_n3_p644_Rodriguero http://hdl.handle.net/20.500.12110/paper_10557903_v68_n3_p644_Rodriguero
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Asexuality
Curculionidae
Divergent selection
Geographical isolation
Species complex
Wolbachia
mitochondrial DNA
animal
Argentina
article
Brazil
classification
evolution
female
genetic variability
genetics
genotype
multilocus sequence typing
parthenogenesis
phenotype
phylogeny
physiology
weevil
Animals
Argentina
Biological Evolution
Brazil
DNA, Mitochondrial
Female
Genetic Variation
Genotype
Multilocus Sequence Typing
Parthenogenesis
Phenotype
Phylogeny
Weevils
Curculionidae
Entimini
Naupactus
Wolbachia
spellingShingle Asexuality
Curculionidae
Divergent selection
Geographical isolation
Species complex
Wolbachia
mitochondrial DNA
animal
Argentina
article
Brazil
classification
evolution
female
genetic variability
genetics
genotype
multilocus sequence typing
parthenogenesis
phenotype
phylogeny
physiology
weevil
Animals
Argentina
Biological Evolution
Brazil
DNA, Mitochondrial
Female
Genetic Variation
Genotype
Multilocus Sequence Typing
Parthenogenesis
Phenotype
Phylogeny
Weevils
Curculionidae
Entimini
Naupactus
Wolbachia
Rodriguero, Marcela Silvina
Confalonieri, Viviana Andrea
Speciation in the asexual realm: Is the parthenogenetic weevil Naupactus cervinus a complex of species in statu nascendi?
topic_facet Asexuality
Curculionidae
Divergent selection
Geographical isolation
Species complex
Wolbachia
mitochondrial DNA
animal
Argentina
article
Brazil
classification
evolution
female
genetic variability
genetics
genotype
multilocus sequence typing
parthenogenesis
phenotype
phylogeny
physiology
weevil
Animals
Argentina
Biological Evolution
Brazil
DNA, Mitochondrial
Female
Genetic Variation
Genotype
Multilocus Sequence Typing
Parthenogenesis
Phenotype
Phylogeny
Weevils
Curculionidae
Entimini
Naupactus
Wolbachia
description Population genetic theory shows that asexual organisms may evolve into species, which behave as independent evolutionary units. As a result, they form genotypic clusters separated by deep gaps due to geographic isolation and/or divergent selection.Identification of several genetically divergent groups of weevils embodied in the nominal species Naupactus cervinus deserves further study, in order to test if these lineages are evolving independently. In the present paper we tested if the parthenogenetic weevil N. cervinus, native to South America and broadly distributed throughout the world, contains more than one evolutionary unit. For this purpose, we applied three different approaches, a multilocus phylogenetic analysis, the GMYC approach and the K/. θ method. We accomplished these analyses through a survey of mitochondrial (COI and COII genes) and nuclear (ITS1 sequence) genetic variation and morphometric analysis in a sample which included individuals from different locations within the native geographic range of N. cervinus. In addition, we compared the divergence accumulated in this species with that in another weevil of the same tribe (Naupactini) showing identical reproductive mode to see if similar levels of morphological variation matches similar levels of genetic divergence.We report the presence of two independent evolutionary units living in sympatry in forest areas. The incongruence between mitochondrial and nuclear datasets analyzed herein reflects incomplete lineage sorting of the nuclear marker and different evolutionary rates between genomes.Ecological divergence driven by natural selection (sympatry) or secondary contact after geographic isolation (allopatry) might explain the deep gaps in mitochondrial phylogenies. Instead, Wolbachia infection was ruled out as a causal factor for such differentiation. We conclude that N. cervinus is probably a species complex with at least two well differentiated lineages that would represent a cluster of species in statu nascendi. © 2013 Elsevier Inc.
author Rodriguero, Marcela Silvina
Confalonieri, Viviana Andrea
author_facet Rodriguero, Marcela Silvina
Confalonieri, Viviana Andrea
author_sort Rodriguero, Marcela Silvina
title Speciation in the asexual realm: Is the parthenogenetic weevil Naupactus cervinus a complex of species in statu nascendi?
title_short Speciation in the asexual realm: Is the parthenogenetic weevil Naupactus cervinus a complex of species in statu nascendi?
title_full Speciation in the asexual realm: Is the parthenogenetic weevil Naupactus cervinus a complex of species in statu nascendi?
title_fullStr Speciation in the asexual realm: Is the parthenogenetic weevil Naupactus cervinus a complex of species in statu nascendi?
title_full_unstemmed Speciation in the asexual realm: Is the parthenogenetic weevil Naupactus cervinus a complex of species in statu nascendi?
title_sort speciation in the asexual realm: is the parthenogenetic weevil naupactus cervinus a complex of species in statu nascendi?
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10557903_v68_n3_p644_Rodriguero
http://hdl.handle.net/20.500.12110/paper_10557903_v68_n3_p644_Rodriguero
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