A new endangered species of Megaleporinus (Characiformes: Anostomidae) from the Rio de Contas basin, eastern Brazil

José L.O. Birindelli, Heraldo A. Britski, Jorge L. Ramirez

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)1349-1359
Number of pages11
JournalJournal of Fish Biology
Volume96
Issue number6
DOIs
StatePublished - 1 Jun 2020

Bibliographical note

Funding Information:
For critical review of the manuscript and various discussions we thank Oscar Shibatta (UEL), Fernando Jerep (UEL) and Bruno Melo (LBP). We thank Fl?via Borges (UESB) and D?bora Diniz Bezerra (UESB) for providing information on specimens of M. gaiero; Nestor Barreto for helping collect specimens of M. gaiero in 2012 and 2016, and Fernando Dagosta (UFGD), Marian Loeb (MZUSP), Fernando Jerep (UEL), Edson Santana (UEL) and Raul Nascimento (UEL) for helping in field trips. The authors were financially supported by CNPq (grants 420255/2016?8 and 302872/2018?3, JLOB) and FAPESP (grant 10/51250?9, JLOB). Specimens were collected in expeditions funded by FAPESP (grant 2011/50282?7 South American Characiformes Inventory project), and Funda??o Arauc?ria (grant 177/2014, JLOB).

Funding Information:
For critical review of the manuscript and various discussions we thank Oscar Shibatta (UEL), Fernando Jerep (UEL) and Bruno Melo (LBP). We thank Flávia Borges (UESB) and Débora Diniz Bezerra (UESB) for providing information on specimens of ; Nestor Barreto for helping collect specimens of in 2012 and 2016, and Fernando Dagosta (UFGD), Marian Loeb (MZUSP), Fernando Jerep (UEL), Edson Santana (UEL) and Raul Nascimento (UEL) for helping in field trips. The authors were financially supported by CNPq (grants 420255/2016–8 and 302872/2018–3, JLOB) and FAPESP (grant 10/51250–9, JLOB). Specimens were collected in expeditions funded by FAPESP (grant 2011/50282–7 South American Characiformes Inventory project), and Fundação Araucária (grant 177/2014, JLOB). M. gaiero M. gaiero

Funding Information:
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). Funding information

Publisher Copyright:
© 2020 The Fisheries Society of the British Isles

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • anostomoidea
  • neotropical
  • phylogeny
  • systematics
  • taxonomy

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