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Taxonomic reassessment of the genus Dichotomius (Coleoptera: Scarabaeinae) through integrative taxonomy

Dung beetles of the subfamily Scarabaeinae are widely recognised as important providers of multiple ecosystem services and are currently experiencing revisions that have improved our understanding of higher-level relationships in the subfamily. However, the study of phylogenetic relationships at the...

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Autores principales: Pardo-Diaz, Carolina, Lopera Toro, Alejandro, Peña Tovar, Sergio Andrés, Sarmiento-Garcés, Rodrigo, Sanchez Herrera, Melissa, Salazar, Camilo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6686840/
https://www.ncbi.nlm.nih.gov/pubmed/31404430
http://dx.doi.org/10.7717/peerj.7332
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author Pardo-Diaz, Carolina
Lopera Toro, Alejandro
Peña Tovar, Sergio Andrés
Sarmiento-Garcés, Rodrigo
Sanchez Herrera, Melissa
Salazar, Camilo
author_facet Pardo-Diaz, Carolina
Lopera Toro, Alejandro
Peña Tovar, Sergio Andrés
Sarmiento-Garcés, Rodrigo
Sanchez Herrera, Melissa
Salazar, Camilo
author_sort Pardo-Diaz, Carolina
collection PubMed
description Dung beetles of the subfamily Scarabaeinae are widely recognised as important providers of multiple ecosystem services and are currently experiencing revisions that have improved our understanding of higher-level relationships in the subfamily. However, the study of phylogenetic relationships at the level of genus or species is still lagging behind. In this study we investigated the New World beetle genus Dichotomius, one of the richest within the New World Scarabaeinae, using the most comprehensive molecular and morphological dataset for the genus to date (in terms of number of species and individuals). Besides evaluating phylogenetic relationships, we also assessed species delimitation through a novel Bayesian approach (iBPP) that enables morphological and molecular data to be combined. Our findings support the monophyly of the genus Dichotomius but not that of the subgenera Selenocopris and Dichotomius sensu stricto (s.s). Also, our results do not support the recent synonymy of Selenocopris with Luederwaldtinia. Some species-groups within the genus were recovered, and seem associated with elevational distribution. Our species delimitation analyses were largely congruent irrespective of the set of parameters applied, but the most robust results were obtained when molecular and morphological data were combined. Although our current sampling and analyses were not powerful enough to make definite interpretations on the validity of all species evaluated, we can confidently recognise D. nisus, D. belus and D. mamillatus as valid and well differentiated species. Overall, our study provides new insights into the phylogenetic relationships and classification of dung beetles and has broad implications for their systematics and evolutionary analyses.
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spelling pubmed-66868402019-08-11 Taxonomic reassessment of the genus Dichotomius (Coleoptera: Scarabaeinae) through integrative taxonomy Pardo-Diaz, Carolina Lopera Toro, Alejandro Peña Tovar, Sergio Andrés Sarmiento-Garcés, Rodrigo Sanchez Herrera, Melissa Salazar, Camilo PeerJ Biodiversity Dung beetles of the subfamily Scarabaeinae are widely recognised as important providers of multiple ecosystem services and are currently experiencing revisions that have improved our understanding of higher-level relationships in the subfamily. However, the study of phylogenetic relationships at the level of genus or species is still lagging behind. In this study we investigated the New World beetle genus Dichotomius, one of the richest within the New World Scarabaeinae, using the most comprehensive molecular and morphological dataset for the genus to date (in terms of number of species and individuals). Besides evaluating phylogenetic relationships, we also assessed species delimitation through a novel Bayesian approach (iBPP) that enables morphological and molecular data to be combined. Our findings support the monophyly of the genus Dichotomius but not that of the subgenera Selenocopris and Dichotomius sensu stricto (s.s). Also, our results do not support the recent synonymy of Selenocopris with Luederwaldtinia. Some species-groups within the genus were recovered, and seem associated with elevational distribution. Our species delimitation analyses were largely congruent irrespective of the set of parameters applied, but the most robust results were obtained when molecular and morphological data were combined. Although our current sampling and analyses were not powerful enough to make definite interpretations on the validity of all species evaluated, we can confidently recognise D. nisus, D. belus and D. mamillatus as valid and well differentiated species. Overall, our study provides new insights into the phylogenetic relationships and classification of dung beetles and has broad implications for their systematics and evolutionary analyses. PeerJ Inc. 2019-08-05 /pmc/articles/PMC6686840/ /pubmed/31404430 http://dx.doi.org/10.7717/peerj.7332 Text en ©2019 Pardo-Diaz et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Biodiversity
Pardo-Diaz, Carolina
Lopera Toro, Alejandro
Peña Tovar, Sergio Andrés
Sarmiento-Garcés, Rodrigo
Sanchez Herrera, Melissa
Salazar, Camilo
Taxonomic reassessment of the genus Dichotomius (Coleoptera: Scarabaeinae) through integrative taxonomy
title Taxonomic reassessment of the genus Dichotomius (Coleoptera: Scarabaeinae) through integrative taxonomy
title_full Taxonomic reassessment of the genus Dichotomius (Coleoptera: Scarabaeinae) through integrative taxonomy
title_fullStr Taxonomic reassessment of the genus Dichotomius (Coleoptera: Scarabaeinae) through integrative taxonomy
title_full_unstemmed Taxonomic reassessment of the genus Dichotomius (Coleoptera: Scarabaeinae) through integrative taxonomy
title_short Taxonomic reassessment of the genus Dichotomius (Coleoptera: Scarabaeinae) through integrative taxonomy
title_sort taxonomic reassessment of the genus dichotomius (coleoptera: scarabaeinae) through integrative taxonomy
topic Biodiversity
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6686840/
https://www.ncbi.nlm.nih.gov/pubmed/31404430
http://dx.doi.org/10.7717/peerj.7332
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