A comprehensive phylogeny of dwarf geckos of the genus Lygodactylus, with insights into their systematics and morphological variation
Autor(a) principal: | |
---|---|
Data de Publicação: | 2021 |
Outros Autores: | , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.ympev.2021.107311 http://hdl.handle.net/11449/222466 |
Resumo: | The 71 currently known species of dwarf geckos of the genus Lygodactylus are a clade of biogeographic interest due to their occurrence in continental Africa, Madagascar, and South America. Furthermore, because many species are morphologically cryptic, our knowledge of species-level diversity within this genus is incomplete, as indicated by numerous unnamed genetic lineages revealed in previous molecular studies. Here we provide an extensive multigene phylogeny covering 56 of the named Lygodactylus species, four named subspecies, and 34 candidate species of which 19 are newly identified in this study. Phylogenetic analyses, based on ∼10.1 kbp concatenated sequences of eight nuclear-encoded and five mitochondrial gene fragments, confirm the monophyly of 14 Lygodactylus species groups, arranged in four major clades. We recover two clades splitting from basal nodes, one comprising exclusively Malagasy species groups, and the other containing three clades. In the latter, there is a clade with only Madagascar species, which is followed by a clade containing three African and one South American species groups, and its sister clade containing six African and two Malagasy species groups. Relationships among species groups within these latter clades remain weakly supported. We reconstruct a Lygodactylus timetree based on a novel fossil-dated phylotranscriptomic tree of squamates, in which we included data from two newly sequenced Lygodactylus transcriptomes. We estimate the crown diversification of Lygodactylus started at 46 mya, and the dispersal of Lygodactylus among the main landmasses in the Oligocene and Miocene, 35–22 mya, but emphasize the wide confidence intervals of these estimates. The phylogeny suggests an initial out-of-Madagascar dispersal as most parsimonious, but accounting for poorly resolved nodes, an out-of-Africa scenario may only require one extra dispersal step. More accurate inferences into the biogeographic history of these geckos will likely require broader sampling of related genera and phylogenomic approaches to provide better topological support. A survey of morphological characters revealed that most of the major clades and species groups within Lygodactylus cannot be unambiguously characterized by external morphology alone, neither by unique character states nor by a diagnostic combination of character states. Thus, any future taxonomic work will likely benefit from integrative, phylogenomic approaches. |
id |
UNSP_cd5209de658463f47910e94fa1715383 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/222466 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
A comprehensive phylogeny of dwarf geckos of the genus Lygodactylus, with insights into their systematics and morphological variationDispersalDiversificationGekkonidaeMolecular phylogenySquamataThe 71 currently known species of dwarf geckos of the genus Lygodactylus are a clade of biogeographic interest due to their occurrence in continental Africa, Madagascar, and South America. Furthermore, because many species are morphologically cryptic, our knowledge of species-level diversity within this genus is incomplete, as indicated by numerous unnamed genetic lineages revealed in previous molecular studies. Here we provide an extensive multigene phylogeny covering 56 of the named Lygodactylus species, four named subspecies, and 34 candidate species of which 19 are newly identified in this study. Phylogenetic analyses, based on ∼10.1 kbp concatenated sequences of eight nuclear-encoded and five mitochondrial gene fragments, confirm the monophyly of 14 Lygodactylus species groups, arranged in four major clades. We recover two clades splitting from basal nodes, one comprising exclusively Malagasy species groups, and the other containing three clades. In the latter, there is a clade with only Madagascar species, which is followed by a clade containing three African and one South American species groups, and its sister clade containing six African and two Malagasy species groups. Relationships among species groups within these latter clades remain weakly supported. We reconstruct a Lygodactylus timetree based on a novel fossil-dated phylotranscriptomic tree of squamates, in which we included data from two newly sequenced Lygodactylus transcriptomes. We estimate the crown diversification of Lygodactylus started at 46 mya, and the dispersal of Lygodactylus among the main landmasses in the Oligocene and Miocene, 35–22 mya, but emphasize the wide confidence intervals of these estimates. The phylogeny suggests an initial out-of-Madagascar dispersal as most parsimonious, but accounting for poorly resolved nodes, an out-of-Africa scenario may only require one extra dispersal step. More accurate inferences into the biogeographic history of these geckos will likely require broader sampling of related genera and phylogenomic approaches to provide better topological support. A survey of morphological characters revealed that most of the major clades and species groups within Lygodactylus cannot be unambiguously characterized by external morphology alone, neither by unique character states nor by a diagnostic combination of character states. Thus, any future taxonomic work will likely benefit from integrative, phylogenomic approaches.Zoological Institute Technical University of Braunschweig, Mendelssohnstr. 4State Natural History Museum of Braunschweig, Pockelsstr. 10Department of Biological Sciences Rutgers University-Newark, 195 University AvenueFaculty of Mathematics and Natural Sciences Institute for Biochemistry and Biology University of PotsdamDepartment of Biology University of Florida, 220 Bartram HallDepartamento de Biodiversidade Instituto de Biociências Universidade Estadual Paulista (UNESP), Campus Rio Claro, Avenida 24A, N 1515 Bela VistaSanta Fe College, 3000 NW 83rd St.Florida Museum of Natural History Division of Herpetology, 1659 Museum Road – Dickinson HallZoologische Staatssammlung München (ZSM-SNSB), Münchhausenstraße 21Department of Biology and Center for Biodiversity and Ecosystem Stewardship Villanova University, 800 Lancaster AvenueDepartamento de Biodiversidade Instituto de Biociências Universidade Estadual Paulista (UNESP), Campus Rio Claro, Avenida 24A, N 1515 Bela VistaTechnical University of BraunschweigState Natural History Museum of BraunschweigRutgers University-NewarkUniversity of PotsdamUniversity of FloridaUniversidade Estadual Paulista (UNESP)Santa Fe CollegeDivision of HerpetologyZoologische Staatssammlung München (ZSM-SNSB)Villanova UniversityGippner, SvenTravers, Scott L.Scherz, Mark D.Colston, Timothy J.Lyra, Mariana L. [UNESP]Mohan, Ashwini V.Multzsch, MalteNielsen, Stuart V.Rancilhac, LoïsGlaw, FrankBauer, Aaron M.Vences, Miguel2022-04-28T19:44:50Z2022-04-28T19:44:50Z2021-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.ympev.2021.107311Molecular Phylogenetics and Evolution, v. 165.1095-95131055-7903http://hdl.handle.net/11449/22246610.1016/j.ympev.2021.1073112-s2.0-85115386244Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMolecular Phylogenetics and Evolutioninfo:eu-repo/semantics/openAccess2022-04-28T19:44:50Zoai:repositorio.unesp.br:11449/222466Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:44:50Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A comprehensive phylogeny of dwarf geckos of the genus Lygodactylus, with insights into their systematics and morphological variation |
title |
A comprehensive phylogeny of dwarf geckos of the genus Lygodactylus, with insights into their systematics and morphological variation |
spellingShingle |
A comprehensive phylogeny of dwarf geckos of the genus Lygodactylus, with insights into their systematics and morphological variation Gippner, Sven Dispersal Diversification Gekkonidae Molecular phylogeny Squamata |
title_short |
A comprehensive phylogeny of dwarf geckos of the genus Lygodactylus, with insights into their systematics and morphological variation |
title_full |
A comprehensive phylogeny of dwarf geckos of the genus Lygodactylus, with insights into their systematics and morphological variation |
title_fullStr |
A comprehensive phylogeny of dwarf geckos of the genus Lygodactylus, with insights into their systematics and morphological variation |
title_full_unstemmed |
A comprehensive phylogeny of dwarf geckos of the genus Lygodactylus, with insights into their systematics and morphological variation |
title_sort |
A comprehensive phylogeny of dwarf geckos of the genus Lygodactylus, with insights into their systematics and morphological variation |
author |
Gippner, Sven |
author_facet |
Gippner, Sven Travers, Scott L. Scherz, Mark D. Colston, Timothy J. Lyra, Mariana L. [UNESP] Mohan, Ashwini V. Multzsch, Malte Nielsen, Stuart V. Rancilhac, Loïs Glaw, Frank Bauer, Aaron M. Vences, Miguel |
author_role |
author |
author2 |
Travers, Scott L. Scherz, Mark D. Colston, Timothy J. Lyra, Mariana L. [UNESP] Mohan, Ashwini V. Multzsch, Malte Nielsen, Stuart V. Rancilhac, Loïs Glaw, Frank Bauer, Aaron M. Vences, Miguel |
author2_role |
author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Technical University of Braunschweig State Natural History Museum of Braunschweig Rutgers University-Newark University of Potsdam University of Florida Universidade Estadual Paulista (UNESP) Santa Fe College Division of Herpetology Zoologische Staatssammlung München (ZSM-SNSB) Villanova University |
dc.contributor.author.fl_str_mv |
Gippner, Sven Travers, Scott L. Scherz, Mark D. Colston, Timothy J. Lyra, Mariana L. [UNESP] Mohan, Ashwini V. Multzsch, Malte Nielsen, Stuart V. Rancilhac, Loïs Glaw, Frank Bauer, Aaron M. Vences, Miguel |
dc.subject.por.fl_str_mv |
Dispersal Diversification Gekkonidae Molecular phylogeny Squamata |
topic |
Dispersal Diversification Gekkonidae Molecular phylogeny Squamata |
description |
The 71 currently known species of dwarf geckos of the genus Lygodactylus are a clade of biogeographic interest due to their occurrence in continental Africa, Madagascar, and South America. Furthermore, because many species are morphologically cryptic, our knowledge of species-level diversity within this genus is incomplete, as indicated by numerous unnamed genetic lineages revealed in previous molecular studies. Here we provide an extensive multigene phylogeny covering 56 of the named Lygodactylus species, four named subspecies, and 34 candidate species of which 19 are newly identified in this study. Phylogenetic analyses, based on ∼10.1 kbp concatenated sequences of eight nuclear-encoded and five mitochondrial gene fragments, confirm the monophyly of 14 Lygodactylus species groups, arranged in four major clades. We recover two clades splitting from basal nodes, one comprising exclusively Malagasy species groups, and the other containing three clades. In the latter, there is a clade with only Madagascar species, which is followed by a clade containing three African and one South American species groups, and its sister clade containing six African and two Malagasy species groups. Relationships among species groups within these latter clades remain weakly supported. We reconstruct a Lygodactylus timetree based on a novel fossil-dated phylotranscriptomic tree of squamates, in which we included data from two newly sequenced Lygodactylus transcriptomes. We estimate the crown diversification of Lygodactylus started at 46 mya, and the dispersal of Lygodactylus among the main landmasses in the Oligocene and Miocene, 35–22 mya, but emphasize the wide confidence intervals of these estimates. The phylogeny suggests an initial out-of-Madagascar dispersal as most parsimonious, but accounting for poorly resolved nodes, an out-of-Africa scenario may only require one extra dispersal step. More accurate inferences into the biogeographic history of these geckos will likely require broader sampling of related genera and phylogenomic approaches to provide better topological support. A survey of morphological characters revealed that most of the major clades and species groups within Lygodactylus cannot be unambiguously characterized by external morphology alone, neither by unique character states nor by a diagnostic combination of character states. Thus, any future taxonomic work will likely benefit from integrative, phylogenomic approaches. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12-01 2022-04-28T19:44:50Z 2022-04-28T19:44:50Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.ympev.2021.107311 Molecular Phylogenetics and Evolution, v. 165. 1095-9513 1055-7903 http://hdl.handle.net/11449/222466 10.1016/j.ympev.2021.107311 2-s2.0-85115386244 |
url |
http://dx.doi.org/10.1016/j.ympev.2021.107311 http://hdl.handle.net/11449/222466 |
identifier_str_mv |
Molecular Phylogenetics and Evolution, v. 165. 1095-9513 1055-7903 10.1016/j.ympev.2021.107311 2-s2.0-85115386244 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Molecular Phylogenetics and Evolution |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803649323785781248 |