Journal Article
Emerging patterns in phylogenetic studies of trichomycterid catfishes (Teleostei, Siluriformes) and the contribution of Andean diversity
Fernandez, L., Arroyave, J. and Schaefer, S.A.
Record Number:
5164
Year:
2021
Journal:
Zoologica Scripta
Pages:
318-336
Volume:
50
Abstract:
Consensus is emerging among studies using DNA sequence data addressing problems
in the taxonomy and relationships of trichomycterid catfishes, a dominant
component of the Neotropical freshwater ichthyofauna, that have heretofore eluded
efforts based on morphological data alone. No previous studies using molecular
data have included representatives of Hatcheria and Silvinichthys, and none have
included dense representation of the diverse Andean species of Trichomycterus. This
study assembled both available and novel comparative DNA sequence data inclusive
of Hatcheria, Silvinichthys, and additional Trichomycterus species not represented in
previous studies to form the most taxonomically comprehensive molecular dataset of
the Trichomycterinae at the genus level to date. Our results confirm previous findings
of strong support for a monophyletic subfamily Trichomycterinae while rejecting
the monophyly of its most diverse genus, Trichomycterus. Our results do not corroborate
Trichomycterinae split into two reciprocally monophyletic groups, and we
show strong support for a sister-group relationship between Eremophilus mutisii and
Trichomycterus bogotensis that suggests some degree of evolutionary distinctiveness
for this clade of Colombian-endemic species. Within Trichomycterus, we uncovered
a novel clade of central Andean species and reveal a close relationship among
southern Andean taxa that included a non-monophyletic Silvinichthys, Bullockia,
Hatcheria, plus a number of Trichomycterus species. Our results are broadly congruent
with recent studies that have uncovered rampant polyphyly within the genus
Trichomycterus and provide emerging evidence, as a result of increased taxonomic
representation, for geographically circumscribed subclades of Trichomycterus species.
Nevertheless, the widespread low support and resolution at most basal nodes
pose a considerable challenge in understanding major patterns of intergeneric relationships,
which in turn hinders our efforts to shed critical light on the biogeographic
history of the group.
KEYWORDS
Andean Trichomycterus, Hatcheria, molecular phylogenetics, Silvinichthys, Trichomycterinae
Times Cited:
10
Relevent Species:
Silvinichthys bortayro Fernandez and De Pinna 2005Glaphyropoma spinosum Bichuette, de Pinna and Trajano 2008Pygidianops cuao Schaefer, Provenzano, de Pinna and Baskin 2005Pygidianops eigenmanni Myers 1944Pygidianops magoi Schaefer, Provenzano, de Pinna and Baskin 2005Pygidianops amphioxus de Pinna and Kirovsky 2011Sarcoglanis simplex Myers and Weitzman 1966Stauroglanis gouldingi de Pinna 1989Ituglanis ramiroi Bichuette and Trajano 2004Trichomycterus sandovali Ardila Rodriguez 2006
Related Records:
Myers, G. S. (1944)
Two extraordinary new blind nematognath fishes from the Rio Negro, representing a new subfamily of Pygidiidae, with a rearrangement of the genera of the family
Myers, G. S. and Weitzman, S.H. (1966)Two remarkable new trichomycterid catfishes from the Amazon basin in Brazil and Colombia
Arratia, G., Chang, A., Menu-Marque, G. and Rojas, M. (1978)About Bullockia gen. nov., Trichomycterus mendozensis n. sp. and revision of the family Trichomycteridae (Pisces, Siluriformes)
de Pinna, M.C.C. (1989)A new scarcoglanidine catfish, phylogeny of its subfamily, and an appraisal of the phyletic status of the Trichomycterinae (Teleostei, Trichomycteridae)
de Pinna, M.C.C. (1992)A new subfamily of Trichomycteridae (Teleostei, Siluriformes), lower locarioid relationships and a discussion on the impact of additional taxa for phylogenetic analysis
Trajano, E. and Sanchez, L.E. (1994)Bresil
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Fernandez, L., Arroyave, J. and Schaefer, S.A. (2021)Emerging patterns in phylogenetic studies of trichomycterid catfishes (Teleostei, Siluriformes) and the contribution of Andean diversity
Fernandez, L., Arroyave, J. and Schaefer, S.A. (2021)Emerging patterns in phylogenetic studies of trichomycterid catfishes (Teleostei, Siluriformes) and the contribution of Andean diversity
Fernandez, L., Arroyave, J. and Schaefer, S.A. (2021)Emerging patterns in phylogenetic studies of trichomycterid catfishes (Teleostei, Siluriformes) and the contribution of Andean diversity
Fernandez, L., Arroyave, J. and Schaefer, S.A. (2021)Emerging patterns in phylogenetic studies of trichomycterid catfishes (Teleostei, Siluriformes) and the contribution of Andean diversity
Fernandez, L., Arroyave, J. and Schaefer, S.A. (2021)Emerging patterns in phylogenetic studies of trichomycterid catfishes (Teleostei, Siluriformes) and the contribution of Andean diversity
Fernandez, L., Arroyave, J. and Schaefer, S.A. (2021)Emerging patterns in phylogenetic studies of trichomycterid catfishes (Teleostei, Siluriformes) and the contribution of Andean diversity
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Flórez, J.S., Cadena, C.D., Donascimiento, C. and Torres, M. (2021)Repeated colonization of caves leads to phenotypic convergence in catfishes (Siluriformes: Trichomycterus) at a small geographical scale
Fernandez, L., Arroyave, J. and Schaefer, S.A. (2021)Emerging patterns in phylogenetic studies of trichomycterid catfishes (Teleostei, Siluriformes) and the contribution of Andean diversity
Fernandez, L., Arroyave, J. and Schaefer, S.A. (2021)Emerging patterns in phylogenetic studies of trichomycterid catfishes (Teleostei, Siluriformes) and the contribution of Andean diversity
Fernandez, L., Arroyave, J. and Schaefer, S.A. (2021)Emerging patterns in phylogenetic studies of trichomycterid catfishes (Teleostei, Siluriformes) and the contribution of Andean diversity
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