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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A new species of Copionodon representing a relictual occurrence of the Copionodontinae (Siluriformes: Trichomycteridae), with a CT-scan imaging survey of key subfamilial features

Full text
Author(s):
Mario de Pinna [1] ; Vitor Abrahão [2] ; Vinicius Reis [1] ; Angela Zanata [3]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Museu Zool, Av Nazare 481, BR-04263000 Sao Paulo, SP - Brazil
[2] Universidade de São Paulo. Museu de Zoologia - Brasil
[3] Univ Fed Bahia, Inst Biol, Rua Barao de Geremoabo, BR-40170115 Salvador, BA - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Neotropical Ichthyology; v. 16, n. 4 2018-12-06.
Abstract

ABSTRACT A new species of the Copionodontinae genus Copionodon is described from the riacho do Mosquito, tributary to rio Santo Antônio, rio Paraguaçu basin in the Diamantina Plateau, Bahia State, northeastern Brazil. This species represents the northernmost occurrence of the subfamily yet known and is a relictual population, apparently restricted to an underground sector of the stream and its immediate downstream exit. The new species can be readily recognized by the combination of the presence of opercular odontodes, the mostly uniform coloration of the body, and the lack of a free orbital rim. Despite several troglomorphic traits shared between the new species and Glaphyropoma spinosum, the two species are not closest relatives and all such similarities are convergent adaptations to the subterranean habitat. A CT-Scan study of the holotype of the new species is presented and allows a view into the details of copionodontine anatomy with unprecedented clarity. (AU)

FAPESP's process: 16/25467-7 - Taxonomy of the genus Tricomycterus Valenciennes, 1832 (Siluriforms, Trichomycteridae) in the Doce river basin. the study of a remaining biodiversity of a devastated basin
Grantee:Vinícius José Carvalho Reis
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 15/26804-4 - Integrating morphological and molecular data in the systematics of three siluriform subgroups: subfamily Copionodontinae (Trichomycteridae), genus Pimelodella (Heptapteridae) and family Cetopsidae
Grantee:Mario Cesar Cardoso de Pinna
Support Opportunities: Regular Research Grants
FAPESP's process: 14/11397-1 - Phylogenetic relationships in the family Cetopsidae (Osteichthyes, Ostariophysi, Siluriformes) with simultaneous analysis of morphological and molecular data
Grantee:Vitor Pimenta Abrahão
Support Opportunities: Scholarships in Brazil - Doctorate