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Cryptic species diversity in the Hypsolebiasmagnificus complex, a clade of endangered seasonal killifishes from the São Francisco River basin, Brazilian Caatinga (Cyprinodontiformes, Aplocheilidae)
Abstract. A great diversity of animal species adapted to life in the semi-arid Caatinga of northeastern Brazil, including seasonal killifishes, has been reported in the last three decades. More recently, field and molecular data have shown a high occurrence of cryptic species. The killifish group he...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Pensoft Publishers
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6079103/ https://www.ncbi.nlm.nih.gov/pubmed/30100793 http://dx.doi.org/10.3897/zookeys.777.25058 |
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author | Costa, Wilson J. E. M. Amorim, Pedro F. Mattos, José Leonardo O. |
author_facet | Costa, Wilson J. E. M. Amorim, Pedro F. Mattos, José Leonardo O. |
author_sort | Costa, Wilson J. E. M. |
collection | PubMed |
description | Abstract. A great diversity of animal species adapted to life in the semi-arid Caatinga of northeastern Brazil, including seasonal killifishes, has been reported in the last three decades. More recently, field and molecular data have shown a high occurrence of cryptic species. The killifish group herein analysed, the Hypsolebiasmagnificus species complex, is endemic to the middle and southern portion of the Caatinga, occupying about 120 km along the floodplains of the middle São Francisco River and some adjacent tributaries. Species of this complex are rare and presently considered threatened with extinction, being uniquely found in pools protected by trees and bushes. Single-locus delimitation methods were used to test species limits of populations displaying different colour patterns along the whole distribution of the complex. All analyses consistently supported the three nominal species and two new, herein described: H.gardneri Costa, sp. n., from the floodplains of the middle São Francisco River and H.hamadryades Costa, sp. n., from the Gorotuba River floodplains. The phylogenetic analysis highly supports H.hamadryades as sister to a clade comprising H.gardneri and H.harmonicus. Our field observations suggest that H.hamadryades is a miniature species. This study indicates that the H.magnificus complex comprises cryptic species apparently endemic to small areas and extremely vulnerable to environmental changes, deserving high concern. |
format | Online Article Text |
id | pubmed-6079103 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Pensoft Publishers |
record_format | MEDLINE/PubMed |
spelling | pubmed-60791032018-08-10 Cryptic species diversity in the Hypsolebiasmagnificus complex, a clade of endangered seasonal killifishes from the São Francisco River basin, Brazilian Caatinga (Cyprinodontiformes, Aplocheilidae) Costa, Wilson J. E. M. Amorim, Pedro F. Mattos, José Leonardo O. Zookeys Research Article Abstract. A great diversity of animal species adapted to life in the semi-arid Caatinga of northeastern Brazil, including seasonal killifishes, has been reported in the last three decades. More recently, field and molecular data have shown a high occurrence of cryptic species. The killifish group herein analysed, the Hypsolebiasmagnificus species complex, is endemic to the middle and southern portion of the Caatinga, occupying about 120 km along the floodplains of the middle São Francisco River and some adjacent tributaries. Species of this complex are rare and presently considered threatened with extinction, being uniquely found in pools protected by trees and bushes. Single-locus delimitation methods were used to test species limits of populations displaying different colour patterns along the whole distribution of the complex. All analyses consistently supported the three nominal species and two new, herein described: H.gardneri Costa, sp. n., from the floodplains of the middle São Francisco River and H.hamadryades Costa, sp. n., from the Gorotuba River floodplains. The phylogenetic analysis highly supports H.hamadryades as sister to a clade comprising H.gardneri and H.harmonicus. Our field observations suggest that H.hamadryades is a miniature species. This study indicates that the H.magnificus complex comprises cryptic species apparently endemic to small areas and extremely vulnerable to environmental changes, deserving high concern. Pensoft Publishers 2018-07-30 /pmc/articles/PMC6079103/ /pubmed/30100793 http://dx.doi.org/10.3897/zookeys.777.25058 Text en Wilson J. E. M. Costa, Pedro F. Amorim, José Leonardo O. Mattos http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Costa, Wilson J. E. M. Amorim, Pedro F. Mattos, José Leonardo O. Cryptic species diversity in the Hypsolebiasmagnificus complex, a clade of endangered seasonal killifishes from the São Francisco River basin, Brazilian Caatinga (Cyprinodontiformes, Aplocheilidae) |
title | Cryptic species diversity in the Hypsolebiasmagnificus complex, a clade of endangered seasonal killifishes from the São Francisco River basin, Brazilian Caatinga (Cyprinodontiformes, Aplocheilidae) |
title_full | Cryptic species diversity in the Hypsolebiasmagnificus complex, a clade of endangered seasonal killifishes from the São Francisco River basin, Brazilian Caatinga (Cyprinodontiformes, Aplocheilidae) |
title_fullStr | Cryptic species diversity in the Hypsolebiasmagnificus complex, a clade of endangered seasonal killifishes from the São Francisco River basin, Brazilian Caatinga (Cyprinodontiformes, Aplocheilidae) |
title_full_unstemmed | Cryptic species diversity in the Hypsolebiasmagnificus complex, a clade of endangered seasonal killifishes from the São Francisco River basin, Brazilian Caatinga (Cyprinodontiformes, Aplocheilidae) |
title_short | Cryptic species diversity in the Hypsolebiasmagnificus complex, a clade of endangered seasonal killifishes from the São Francisco River basin, Brazilian Caatinga (Cyprinodontiformes, Aplocheilidae) |
title_sort | cryptic species diversity in the hypsolebiasmagnificus complex, a clade of endangered seasonal killifishes from the são francisco river basin, brazilian caatinga (cyprinodontiformes, aplocheilidae) |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6079103/ https://www.ncbi.nlm.nih.gov/pubmed/30100793 http://dx.doi.org/10.3897/zookeys.777.25058 |
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