Crenicichla dandara, new species: The black jacundá from the Rio Xingu (Teleostei: Cichlidae)
Crenicichla dandara, new species, is endemic to the rio Xingu above the Belo Monte narrows, and its major left bank tributary the rio Iriri. The new species is distinguished from all congeners by the following combination of characters: body uniformly black (live fishes) or dark brown (preserved spe...
| Autor principal: | Varella, Henrique R. |
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| Outros Autores: | Ito, Priscila Madoka |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Proceedings of the Academy of Natural Sciences of Philadelphia
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/16987 |
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oai:repositorio:1-16987 |
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oai:repositorio:1-16987 Crenicichla dandara, new species: The black jacundá from the Rio Xingu (Teleostei: Cichlidae) Varella, Henrique R. Ito, Priscila Madoka Crenicichla dandara, new species, is endemic to the rio Xingu above the Belo Monte narrows, and its major left bank tributary the rio Iriri. The new species is distinguished from all congeners by the following combination of characters: body uniformly black (live fishes) or dark brown (preserved specimens) in adults and 74-86 scales in the E1 row. Crenicichla dandara is considered herein to be the tenth species of the C. lugubris group, but its allies within the group are not clear. Among members of this group, C. dandara is most similar in general body shape, snout characteristics and squamation to C. lugubris and C. adspersa, but lacks a caudal-fin blotch as does C. johanna and C. monicae, a condition rare within the Crenicichla-Teleocichla clade. The overall black coloration in Crenicichla dandara is shared with the syntopic, but not closely related, Teleocichla preta. Both species inhabit clear water rapids where they hide among the shadows of large rocks, suggesting that the dark coloration is for camouflage and ambush predation. Based on a preliminary assessment of its conservation status following the criteria and categories of IUCN classification, Crenicichla dandara is considered as a species of least concern (LC). © 2018 by the Academy of Natural Sciences of Drexel University. 2020-06-15T21:37:51Z 2020-06-15T21:37:51Z 2018 Artigo https://repositorio.inpa.gov.br/handle/1/16987 10.1635/053.166.0104 en Volume 166, Pags. 1-13 Restrito Proceedings of the Academy of Natural Sciences of Philadelphia |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| description |
Crenicichla dandara, new species, is endemic to the rio Xingu above the Belo Monte narrows, and its major left bank tributary the rio Iriri. The new species is distinguished from all congeners by the following combination of characters: body uniformly black (live fishes) or dark brown (preserved specimens) in adults and 74-86 scales in the E1 row. Crenicichla dandara is considered herein to be the tenth species of the C. lugubris group, but its allies within the group are not clear. Among members of this group, C. dandara is most similar in general body shape, snout characteristics and squamation to C. lugubris and C. adspersa, but lacks a caudal-fin blotch as does C. johanna and C. monicae, a condition rare within the Crenicichla-Teleocichla clade. The overall black coloration in Crenicichla dandara is shared with the syntopic, but not closely related, Teleocichla preta. Both species inhabit clear water rapids where they hide among the shadows of large rocks, suggesting that the dark coloration is for camouflage and ambush predation. Based on a preliminary assessment of its conservation status following the criteria and categories of IUCN classification, Crenicichla dandara is considered as a species of least concern (LC). © 2018 by the Academy of Natural Sciences of Drexel University. |
| format |
Artigo |
| author |
Varella, Henrique R. |
| spellingShingle |
Varella, Henrique R. Crenicichla dandara, new species: The black jacundá from the Rio Xingu (Teleostei: Cichlidae) |
| author2 |
Ito, Priscila Madoka |
| author2Str |
Ito, Priscila Madoka |
| title |
Crenicichla dandara, new species: The black jacundá from the Rio Xingu (Teleostei: Cichlidae) |
| title_short |
Crenicichla dandara, new species: The black jacundá from the Rio Xingu (Teleostei: Cichlidae) |
| title_full |
Crenicichla dandara, new species: The black jacundá from the Rio Xingu (Teleostei: Cichlidae) |
| title_fullStr |
Crenicichla dandara, new species: The black jacundá from the Rio Xingu (Teleostei: Cichlidae) |
| title_full_unstemmed |
Crenicichla dandara, new species: The black jacundá from the Rio Xingu (Teleostei: Cichlidae) |
| title_sort |
crenicichla dandara, new species: the black jacundá from the rio xingu (teleostei: cichlidae) |
| publisher |
Proceedings of the Academy of Natural Sciences of Philadelphia |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/16987 |
| _version_ |
1787143554174287872 |
| score |
11.755432 |