A new endangered species of Megaleporinus (Characiformes: Anostomidae) from the Rio de Contas basin, eastern Brazil.
anostomoidea
neotropical
phylogeny
systematics
taxonomy
Journal
Journal of fish biology
ISSN: 1095-8649
Titre abrégé: J Fish Biol
Pays: England
ID NLM: 0214055
Informations de publication
Date de publication:
Jun 2020
Jun 2020
Historique:
received:
01
12
2019
revised:
18
02
2020
accepted:
22
02
2020
pubmed:
26
2
2020
medline:
27
6
2020
entrez:
26
2
2020
Statut:
ppublish
Résumé
A new species of Megaleporinus is described from the Rio de Contas, a coastal drainage of eastern Brazil, and its phylogenetic relationships are studied using molecular data. The new species is unique among Anostomidae by possessing two exclusive features: an irregular dark longitudinal stripe from supracleithrum to second midlateral blotch and anterior cranial fontanel partially closed. In addition, the new species is diagnosed by having three premaxillary teeth, three dentary teeth, 37 or 38 scales in lateral line, 16 scale rows around caudal peduncle, three dark midlateral blotches on body, and red fins in life. The new species is closely related to M. obtusidens from the São Francisco basin, corroborating previous studies that indicated that the latter represents a species complex as currently defined. The new species exhibits the first rib enlarged in mature males, a feature described for some congeners. The new species is herein considered to be Endangered under the IUCN criteria.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1349-1359Subventions
Organisme : This study was funded by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP, process10/512150-9), and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, processes 420255/2016-8, 302872/2018-3). Specimens were collected in expeditions funded by FAPESP (process 2011/50282-7), and Fundação Araucária (FA, process 177/2014).
Informations de copyright
© 2020 The Fisheries Society of the British Isles.
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