Comparative Morphology, Phylogeny, Classification and Evolution of Interstitial Habits in Microcambevine Catfishes (Siluriformes: Trichomycteridae)
The Microcambevinae are a catfish subfamily endemic to the Brazilian Atlantic Forest, comprising rare species with interstitial habits. Microcambevines have been classified in two genera, <i>Listrura</i> and <i>Microcambeva</i>, but the relationships among included intragener...
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| Format: | Article |
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MDPI AG
2021-11-01
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| Series: | Taxonomy |
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| Online Access: | https://www.mdpi.com/2673-6500/1/4/25 |
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| author | Wilson J. E. M. Costa Axel M. Katz |
| author_facet | Wilson J. E. M. Costa Axel M. Katz |
| author_sort | Wilson J. E. M. Costa |
| collection | DOAJ |
| description | The Microcambevinae are a catfish subfamily endemic to the Brazilian Atlantic Forest, comprising rare species with interstitial habits. Microcambevines have been classified in two genera, <i>Listrura</i> and <i>Microcambeva</i>, but the relationships among included intrageneric lineages are still poorly understood. The objectives of this study are to conduct a phylogenetic analysis integrating morphological characters and a multigene dataset, and to propose a classification better reflecting morphological diversity and phylogenetic relationships. Phylogenetic analyses combining 57 morphological characters and a 2563 bp molecular dataset generated similar phylogenetic trees with high support values for most clades, including the two genera and some intrageneric groups. Six morphologically distinctive infrageneric lineages, three in <i>Listrura</i> and three in <i>Microcambeva</i>, are classified as subgenera, as well as two new species are described. The morphological diversity here recorded integrated to available information about habitat indicate high level of divergent specialisation among lineages. The analyses indicate a series of convergent morphological traits between <i>Listrura</i> and other teleosts sharing a fossorial lifestyle, as well as specialised traits independently occurring within <i>Listrura</i> lineages. Similarly, a great diversity of morphological traits occurs convergently in <i>Microcambeva</i> lineages and other teleosts sharing psammophilic habits. This study shows that combining molecular and morphological data yields well-supported phylogenies, making possible to unambiguously diagnose clades and to establish evolutionary hypothesis on morphological evolution. |
| first_indexed | 2024-03-10T03:00:20Z |
| format | Article |
| id | doaj.art-bec4e546c9b64e13aeda8101b09e4cfb |
| institution | Directory Open Access Journal |
| issn | 2673-6500 |
| language | English |
| last_indexed | 2024-03-10T03:00:20Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Taxonomy |
| spelling | doaj.art-bec4e546c9b64e13aeda8101b09e4cfb2023-11-23T10:47:50ZengMDPI AGTaxonomy2673-65002021-11-011431334410.3390/taxonomy1040025Comparative Morphology, Phylogeny, Classification and Evolution of Interstitial Habits in Microcambevine Catfishes (Siluriformes: Trichomycteridae)Wilson J. E. M. Costa0Axel M. Katz1Laboratory of Systematics and Evolution of Teleost Fishes, Institute of Biology, Federal University of Rio de Janeiro, Caixa Postal 68049, Rio de Janeiro 21941-971, BrazilLaboratory of Systematics and Evolution of Teleost Fishes, Institute of Biology, Federal University of Rio de Janeiro, Caixa Postal 68049, Rio de Janeiro 21941-971, BrazilThe Microcambevinae are a catfish subfamily endemic to the Brazilian Atlantic Forest, comprising rare species with interstitial habits. Microcambevines have been classified in two genera, <i>Listrura</i> and <i>Microcambeva</i>, but the relationships among included intrageneric lineages are still poorly understood. The objectives of this study are to conduct a phylogenetic analysis integrating morphological characters and a multigene dataset, and to propose a classification better reflecting morphological diversity and phylogenetic relationships. Phylogenetic analyses combining 57 morphological characters and a 2563 bp molecular dataset generated similar phylogenetic trees with high support values for most clades, including the two genera and some intrageneric groups. Six morphologically distinctive infrageneric lineages, three in <i>Listrura</i> and three in <i>Microcambeva</i>, are classified as subgenera, as well as two new species are described. The morphological diversity here recorded integrated to available information about habitat indicate high level of divergent specialisation among lineages. The analyses indicate a series of convergent morphological traits between <i>Listrura</i> and other teleosts sharing a fossorial lifestyle, as well as specialised traits independently occurring within <i>Listrura</i> lineages. Similarly, a great diversity of morphological traits occurs convergently in <i>Microcambeva</i> lineages and other teleosts sharing psammophilic habits. This study shows that combining molecular and morphological data yields well-supported phylogenies, making possible to unambiguously diagnose clades and to establish evolutionary hypothesis on morphological evolution.https://www.mdpi.com/2673-6500/1/4/25Atlantic Forestfossorial lifestylemolecular phylogenyNeotropicsosteologynew subgenera |
| spellingShingle | Wilson J. E. M. Costa Axel M. Katz Comparative Morphology, Phylogeny, Classification and Evolution of Interstitial Habits in Microcambevine Catfishes (Siluriformes: Trichomycteridae) Taxonomy Atlantic Forest fossorial lifestyle molecular phylogeny Neotropics osteology new subgenera |
| title | Comparative Morphology, Phylogeny, Classification and Evolution of Interstitial Habits in Microcambevine Catfishes (Siluriformes: Trichomycteridae) |
| title_full | Comparative Morphology, Phylogeny, Classification and Evolution of Interstitial Habits in Microcambevine Catfishes (Siluriformes: Trichomycteridae) |
| title_fullStr | Comparative Morphology, Phylogeny, Classification and Evolution of Interstitial Habits in Microcambevine Catfishes (Siluriformes: Trichomycteridae) |
| title_full_unstemmed | Comparative Morphology, Phylogeny, Classification and Evolution of Interstitial Habits in Microcambevine Catfishes (Siluriformes: Trichomycteridae) |
| title_short | Comparative Morphology, Phylogeny, Classification and Evolution of Interstitial Habits in Microcambevine Catfishes (Siluriformes: Trichomycteridae) |
| title_sort | comparative morphology phylogeny classification and evolution of interstitial habits in microcambevine catfishes siluriformes trichomycteridae |
| topic | Atlantic Forest fossorial lifestyle molecular phylogeny Neotropics osteology new subgenera |
| url | https://www.mdpi.com/2673-6500/1/4/25 |
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