Phylogenetic relationships in Dichroplus Stål (Orthoptera: Acrididae: Melanoplinae) inferred from molecular and morphological data: Testing karyotype diversification

The neotropical genus Dichroplus and related genera are characterized by a relatively uniform external morphology and a remarkably divergent male genitalia and hence its taxonomy is controversial. It also shows an extreme karyotypic diversification. In this study we used molecular and morphological...

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Autores principales: Colombo, Pablo Cesar, Sequeira, Andrea Silvia, Vilardi, Juan Cesar, Confalonieri, Viviana Andrea
Publicado: 2005
Materias:
evolution
grasshopper
karyotype
morphology
Neotropical region
phylogenetics
taxonomy
Acrididae
Dichroplus
Dichroplus silveiraguidoi
Melanoplinae
Orthoptera
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07483007_v21_n4_p375_Colombo
http://hdl.handle.net/20.500.12110/paper_07483007_v21_n4_p375_Colombo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_07483007_v21_n4_p375_Colombo
record_format dspace
spelling paper:paper_07483007_v21_n4_p375_Colombo2023-06-08T15:45:14Z Phylogenetic relationships in Dichroplus Stål (Orthoptera: Acrididae: Melanoplinae) inferred from molecular and morphological data: Testing karyotype diversification Colombo, Pablo Cesar Sequeira, Andrea Silvia Vilardi, Juan Cesar Confalonieri, Viviana Andrea evolution grasshopper karyotype morphology Neotropical region phylogenetics taxonomy Acrididae Dichroplus Dichroplus silveiraguidoi Melanoplinae Orthoptera The neotropical genus Dichroplus and related genera are characterized by a relatively uniform external morphology and a remarkably divergent male genitalia and hence its taxonomy is controversial. It also shows an extreme karyotypic diversification. In this study we used molecular and morphological characters to test the monophyly of the genus and to evaluate chromosome evolution. Twenty-seven species from Dichroplus and related genera were included in the analysis. Morphological characters refer to the general morphology, male genitalia and female structures. Molecular studies were performed, sequencing part of two mitochondrial genes, cytochrome oxidase I and II. Independent and combined phylogenetic analyses of the data were performed under maximum parsimony. The karyotypic characters (rearrangements) were either mapped onto the combined topology or combined with the other data sets. While the molecular analysis confirms some results attained with morphology, some others do not. All point towards the paraphyly of the genus. Our results show the relevance of morphological data in phylogenetic studies because morphology and molecules supply complementary evidence. The mapping of chromosome characters on the combined tree shows that the most extreme karyotype, in D. silveiraguidoi, is a derived condition, probably reached through several centric fusions, and that X-autosome centric fusions were recurrently fixed during the evolution of the group. © The Willi Hennig Society 2005. Fil:Colombo, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sequeira, A.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vilardi, J.C. 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. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07483007_v21_n4_p375_Colombo http://hdl.handle.net/20.500.12110/paper_07483007_v21_n4_p375_Colombo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic evolution
grasshopper
karyotype
morphology
Neotropical region
phylogenetics
taxonomy
Acrididae
Dichroplus
Dichroplus silveiraguidoi
Melanoplinae
Orthoptera
spellingShingle evolution
grasshopper
karyotype
morphology
Neotropical region
phylogenetics
taxonomy
Acrididae
Dichroplus
Dichroplus silveiraguidoi
Melanoplinae
Orthoptera
Colombo, Pablo Cesar
Sequeira, Andrea Silvia
Vilardi, Juan Cesar
Confalonieri, Viviana Andrea
Phylogenetic relationships in Dichroplus Stål (Orthoptera: Acrididae: Melanoplinae) inferred from molecular and morphological data: Testing karyotype diversification
topic_facet evolution
grasshopper
karyotype
morphology
Neotropical region
phylogenetics
taxonomy
Acrididae
Dichroplus
Dichroplus silveiraguidoi
Melanoplinae
Orthoptera
description The neotropical genus Dichroplus and related genera are characterized by a relatively uniform external morphology and a remarkably divergent male genitalia and hence its taxonomy is controversial. It also shows an extreme karyotypic diversification. In this study we used molecular and morphological characters to test the monophyly of the genus and to evaluate chromosome evolution. Twenty-seven species from Dichroplus and related genera were included in the analysis. Morphological characters refer to the general morphology, male genitalia and female structures. Molecular studies were performed, sequencing part of two mitochondrial genes, cytochrome oxidase I and II. Independent and combined phylogenetic analyses of the data were performed under maximum parsimony. The karyotypic characters (rearrangements) were either mapped onto the combined topology or combined with the other data sets. While the molecular analysis confirms some results attained with morphology, some others do not. All point towards the paraphyly of the genus. Our results show the relevance of morphological data in phylogenetic studies because morphology and molecules supply complementary evidence. The mapping of chromosome characters on the combined tree shows that the most extreme karyotype, in D. silveiraguidoi, is a derived condition, probably reached through several centric fusions, and that X-autosome centric fusions were recurrently fixed during the evolution of the group. © The Willi Hennig Society 2005.
author Colombo, Pablo Cesar
Sequeira, Andrea Silvia
Vilardi, Juan Cesar
Confalonieri, Viviana Andrea
author_facet Colombo, Pablo Cesar
Sequeira, Andrea Silvia
Vilardi, Juan Cesar
Confalonieri, Viviana Andrea
author_sort Colombo, Pablo Cesar
title Phylogenetic relationships in Dichroplus Stål (Orthoptera: Acrididae: Melanoplinae) inferred from molecular and morphological data: Testing karyotype diversification
title_short Phylogenetic relationships in Dichroplus Stål (Orthoptera: Acrididae: Melanoplinae) inferred from molecular and morphological data: Testing karyotype diversification
title_full Phylogenetic relationships in Dichroplus Stål (Orthoptera: Acrididae: Melanoplinae) inferred from molecular and morphological data: Testing karyotype diversification
title_fullStr Phylogenetic relationships in Dichroplus Stål (Orthoptera: Acrididae: Melanoplinae) inferred from molecular and morphological data: Testing karyotype diversification
title_full_unstemmed Phylogenetic relationships in Dichroplus Stål (Orthoptera: Acrididae: Melanoplinae) inferred from molecular and morphological data: Testing karyotype diversification
title_sort phylogenetic relationships in dichroplus stål (orthoptera: acrididae: melanoplinae) inferred from molecular and morphological data: testing karyotype diversification
publishDate 2005
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07483007_v21_n4_p375_Colombo
http://hdl.handle.net/20.500.12110/paper_07483007_v21_n4_p375_Colombo
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