Description of two new species forming a sympatric species pair of Crenicichla (Teleostei: Cichlidae) endemic to the Piray Guazú River in the Paraná River Basin, Misiones, Argentina and belonging to the C. mandelburgeri species complex
Crenicichla is the largest and most widely distributed genus of Neotropical cichlids. The Crenicichla mandelburgeri species complex from the Middle Paraná departs from the ancestral and predominant ecomorphology of the large genus and shows parallel evolution of ecomorphs both within the complex an...
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| Format: | Article |
| Language: | English |
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Consortium of European Natural History Museums
2023-07-01
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| Series: | European Journal of Taxonomy |
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| Online Access: | https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/2159 |
| _version_ | 1827905966129020928 |
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| author | Oldřich Říčan Lubomír Piálek Adriana Almirón Jorge Casciotta |
| author_facet | Oldřich Říčan Lubomír Piálek Adriana Almirón Jorge Casciotta |
| author_sort | Oldřich Říčan |
| collection | DOAJ |
| description |
Crenicichla is the largest and most widely distributed genus of Neotropical cichlids. The Crenicichla mandelburgeri species complex from the Middle Paraná departs from the ancestral and predominant ecomorphology of the large genus and shows parallel evolution of ecomorphs both within the complex and also to the unrelated C. missioneira species complex from the Uruguay River. Here, we formally describe a new species pair from the C. mandelburgeri species complex that has evolved a parallel morphological and ecological dichotomy to another species pair and also to species in the unrelated C. missioneira species complex. The new species pair is endemic to a single tributary (the Piray Guazú) of the Middle Paraná River where it is sympatric and partly syntopic. Mitochondrial DNA phylogeny shows the two new species as distantly related within the C. mandelburgeri species complex, each with a sister species in the Iguazú rather than in the neighbouring Paraná River tributaries. Nuclear DNA analyses demonstrate their sister-group relationship, which is however complicated by the reticulated origin of one of the new species. We present determination keys for all the currently formally described species of the C. mandelburgeri species complex including the new species described here.
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| first_indexed | 2024-03-13T00:50:01Z |
| format | Article |
| id | doaj.art-1c001e22f2d540ffb23d6ed4fb294083 |
| institution | Directory Open Access Journal |
| issn | 2118-9773 |
| language | English |
| last_indexed | 2024-03-13T00:50:01Z |
| publishDate | 2023-07-01 |
| publisher | Consortium of European Natural History Museums |
| record_format | Article |
| series | European Journal of Taxonomy |
| spelling | doaj.art-1c001e22f2d540ffb23d6ed4fb2940832023-07-07T21:59:04ZengConsortium of European Natural History MuseumsEuropean Journal of Taxonomy2118-97732023-07-01879110.5852/ejt.2023.879.2159Description of two new species forming a sympatric species pair of Crenicichla (Teleostei: Cichlidae) endemic to the Piray Guazú River in the Paraná River Basin, Misiones, Argentina and belonging to the C. mandelburgeri species complexOldřich Říčan0Lubomír Piálek1Adriana Almirón2Jorge Casciotta3University of South Bohemia, Faculty of Science, Department of Zoology, Branišovská 31, 370 05, České Budějovice, Czech RepublicUniversity of South Bohemia, Faculty of Science, Department of Zoology, Branišovská 31, 370 05, České Budějovice, Czech RepublicUNLP, Facultad de Ciencias Naturales y Museo, División Zoología Vertebrados, Paseo del Bosque, 1900 La Plata, Buenos Aires Province, ArgentinaUNLP, Facultad de Ciencias Naturales y Museo, División Zoología Vertebrados, Paseo del Bosque, 1900 La Plata, Buenos Aires Province, Argentina Crenicichla is the largest and most widely distributed genus of Neotropical cichlids. The Crenicichla mandelburgeri species complex from the Middle Paraná departs from the ancestral and predominant ecomorphology of the large genus and shows parallel evolution of ecomorphs both within the complex and also to the unrelated C. missioneira species complex from the Uruguay River. Here, we formally describe a new species pair from the C. mandelburgeri species complex that has evolved a parallel morphological and ecological dichotomy to another species pair and also to species in the unrelated C. missioneira species complex. The new species pair is endemic to a single tributary (the Piray Guazú) of the Middle Paraná River where it is sympatric and partly syntopic. Mitochondrial DNA phylogeny shows the two new species as distantly related within the C. mandelburgeri species complex, each with a sister species in the Iguazú rather than in the neighbouring Paraná River tributaries. Nuclear DNA analyses demonstrate their sister-group relationship, which is however complicated by the reticulated origin of one of the new species. We present determination keys for all the currently formally described species of the C. mandelburgeri species complex including the new species described here. https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/2159convergencediversificationecomorphsreplicated evolutionspecies flock |
| spellingShingle | Oldřich Říčan Lubomír Piálek Adriana Almirón Jorge Casciotta Description of two new species forming a sympatric species pair of Crenicichla (Teleostei: Cichlidae) endemic to the Piray Guazú River in the Paraná River Basin, Misiones, Argentina and belonging to the C. mandelburgeri species complex European Journal of Taxonomy convergence diversification ecomorphs replicated evolution species flock |
| title | Description of two new species forming a sympatric species pair of Crenicichla (Teleostei: Cichlidae) endemic to the Piray Guazú River in the Paraná River Basin, Misiones, Argentina and belonging to the C. mandelburgeri species complex |
| title_full | Description of two new species forming a sympatric species pair of Crenicichla (Teleostei: Cichlidae) endemic to the Piray Guazú River in the Paraná River Basin, Misiones, Argentina and belonging to the C. mandelburgeri species complex |
| title_fullStr | Description of two new species forming a sympatric species pair of Crenicichla (Teleostei: Cichlidae) endemic to the Piray Guazú River in the Paraná River Basin, Misiones, Argentina and belonging to the C. mandelburgeri species complex |
| title_full_unstemmed | Description of two new species forming a sympatric species pair of Crenicichla (Teleostei: Cichlidae) endemic to the Piray Guazú River in the Paraná River Basin, Misiones, Argentina and belonging to the C. mandelburgeri species complex |
| title_short | Description of two new species forming a sympatric species pair of Crenicichla (Teleostei: Cichlidae) endemic to the Piray Guazú River in the Paraná River Basin, Misiones, Argentina and belonging to the C. mandelburgeri species complex |
| title_sort | description of two new species forming a sympatric species pair of crenicichla teleostei cichlidae endemic to the piray guazu river in the parana river basin misiones argentina and belonging to the c mandelburgeri species complex |
| topic | convergence diversification ecomorphs replicated evolution species flock |
| url | https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/2159 |
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