Anisomeriini diving beetles-an Atlantic-Pacific Island disjunction on Tristan da Cunha and Robinson Crusoe Island, Juan Fernández?

Anisomeriini diving beetles contain only two enigmatic species, representing a remarkable disjunction between the Pacific Juan Fernández Islands (Anisomeria bistriata) and the South Atlantic Tristan da Cunha Archipelago (Senilites tristanicola). They belong to the Colymbetinae, which contain 140 spe...

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Autores principales: Morinière, J., Michat, M.C., Jäch, M.A., Bergsten, J., Hendrich, L., Balke, M.
Formato: JOUR
Materias:
Colymbetinae
Colymbetini
Filicophyta
Hygrobiidae
Rhantus
Rhantus bistriatus
Rhantus signatus
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_07483007_v31_n2_p166_Moriniere
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_07483007_v31_n2_p166_Moriniere
record_format dspace
spelling todo:paper_07483007_v31_n2_p166_Moriniere2023-10-03T15:39:04Z Anisomeriini diving beetles-an Atlantic-Pacific Island disjunction on Tristan da Cunha and Robinson Crusoe Island, Juan Fernández? Morinière, J. Michat, M.C. Jäch, M.A. Bergsten, J. Hendrich, L. Balke, M. Colymbetinae Colymbetini Filicophyta Hygrobiidae Rhantus Rhantus bistriatus Rhantus signatus Anisomeriini diving beetles contain only two enigmatic species, representing a remarkable disjunction between the Pacific Juan Fernández Islands (Anisomeria bistriata) and the South Atlantic Tristan da Cunha Archipelago (Senilites tristanicola). They belong to the Colymbetinae, which contain 140 species worldwide. Here we aim to reconstruct the evolutionary history of the Anisomerinii and use > 9000 bp DNA sequence data from 13 fragments of 12 loci for a comprehensive sampling of Colymbetinae species. Analyses under different optimization criteria converge on very similar topologies, and show unambiguously that Anisomeria bistriata and Senilites tristanicola belong to the Neotropical Rhantus signatus species group, a comparatively recent clade within Colymbetinae. Anisomeriini therefore are synonomized with Colymbetini and both species are transferred to Rhantus accordingly, resulting in secondary homonymy of Rhantus bistriatus (Brullé, 1835) with Rhantus bistriatus (Bergsträsser, 1778). We propose the replacement name Rhantus selkirki Jäch, Balke & Michat nom. nov. for the Juan Fernández species. Presence of these species on remote islands is therefore not relictary, but the result of more recent range expansions out of mainland South America. Finally, we suggest that Carabdytini should be synonymized with Colymbetini. Our study underpins the Hennigian principle that a natural classification can be derived only from the search for shared apomorphies between species, not from differences. © The Willi Hennig Society 2014. Fil:Michat, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07483007_v31_n2_p166_Moriniere
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Colymbetinae
Colymbetini
Filicophyta
Hygrobiidae
Rhantus
Rhantus bistriatus
Rhantus signatus
spellingShingle Colymbetinae
Colymbetini
Filicophyta
Hygrobiidae
Rhantus
Rhantus bistriatus
Rhantus signatus
Morinière, J.
Michat, M.C.
Jäch, M.A.
Bergsten, J.
Hendrich, L.
Balke, M.
Anisomeriini diving beetles-an Atlantic-Pacific Island disjunction on Tristan da Cunha and Robinson Crusoe Island, Juan Fernández?
topic_facet Colymbetinae
Colymbetini
Filicophyta
Hygrobiidae
Rhantus
Rhantus bistriatus
Rhantus signatus
description Anisomeriini diving beetles contain only two enigmatic species, representing a remarkable disjunction between the Pacific Juan Fernández Islands (Anisomeria bistriata) and the South Atlantic Tristan da Cunha Archipelago (Senilites tristanicola). They belong to the Colymbetinae, which contain 140 species worldwide. Here we aim to reconstruct the evolutionary history of the Anisomerinii and use > 9000 bp DNA sequence data from 13 fragments of 12 loci for a comprehensive sampling of Colymbetinae species. Analyses under different optimization criteria converge on very similar topologies, and show unambiguously that Anisomeria bistriata and Senilites tristanicola belong to the Neotropical Rhantus signatus species group, a comparatively recent clade within Colymbetinae. Anisomeriini therefore are synonomized with Colymbetini and both species are transferred to Rhantus accordingly, resulting in secondary homonymy of Rhantus bistriatus (Brullé, 1835) with Rhantus bistriatus (Bergsträsser, 1778). We propose the replacement name Rhantus selkirki Jäch, Balke & Michat nom. nov. for the Juan Fernández species. Presence of these species on remote islands is therefore not relictary, but the result of more recent range expansions out of mainland South America. Finally, we suggest that Carabdytini should be synonymized with Colymbetini. Our study underpins the Hennigian principle that a natural classification can be derived only from the search for shared apomorphies between species, not from differences. © The Willi Hennig Society 2014.
format JOUR
author Morinière, J.
Michat, M.C.
Jäch, M.A.
Bergsten, J.
Hendrich, L.
Balke, M.
author_facet Morinière, J.
Michat, M.C.
Jäch, M.A.
Bergsten, J.
Hendrich, L.
Balke, M.
author_sort Morinière, J.
title Anisomeriini diving beetles-an Atlantic-Pacific Island disjunction on Tristan da Cunha and Robinson Crusoe Island, Juan Fernández?
title_short Anisomeriini diving beetles-an Atlantic-Pacific Island disjunction on Tristan da Cunha and Robinson Crusoe Island, Juan Fernández?
title_full Anisomeriini diving beetles-an Atlantic-Pacific Island disjunction on Tristan da Cunha and Robinson Crusoe Island, Juan Fernández?
title_fullStr Anisomeriini diving beetles-an Atlantic-Pacific Island disjunction on Tristan da Cunha and Robinson Crusoe Island, Juan Fernández?
title_full_unstemmed Anisomeriini diving beetles-an Atlantic-Pacific Island disjunction on Tristan da Cunha and Robinson Crusoe Island, Juan Fernández?
title_sort anisomeriini diving beetles-an atlantic-pacific island disjunction on tristan da cunha and robinson crusoe island, juan fernández?
url http://hdl.handle.net/20.500.12110/paper_07483007_v31_n2_p166_Moriniere
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