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

A new Brachyrhamdia (Siluriformes: Heptapteridae) from Rio Japura basin, Brazil, with comments on its phylogenetic affinities, biogeography and mimicry in the genus

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Author(s):
Slobodian, Veronica [1, 2] ; Bockmann, Flavio Alicino [3, 1]
Total Authors: 2
Affiliation:
[1] Univ Sao Paulo, FFCLRP, Programa Posgrad Biol Comparada, BR-14040901 Ribeirao Preto, SP - Brazil
[2] Univ Sao Paulo, Lab Ictiol, Museu Zool, BR-04218970 Sao Paulo - Brazil
[3] Univ Sao Paulo, FFCLRP, Dept Biol, LIRP, BR-14040901 Ribeirao Preto, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Zootaxa; v. 3717, n. 1, p. 1-22, SEP 26 2013.
Web of Science Citations: 7
Abstract

Brachyrhamdia thayeria is herein described as a new heptapterid species from Rio Japura, a left margin tributary of the Rio Solimoes, Amazonas basin, Brazil. The new species is diagnosed from all its congeners by having a putative autapomorphy: dark oblique stripe across the caudal peduncle, originating below the anterior half of adipose fin and ending at base of rays of ventral caudal-fin lobe. Brachyrhamdia thayeria is considered closely related to B. imitator and B. rambarrani with which it shares a low vertebral number and absence of lateral stripe along trunk. The new species shares exclusively with B. rambarrani the presence of a dark conspicuous bar along the dorsolateral region of trunk, a putative synapomorphy. Brachyrhamdia are distributed in lowland regions of northern South America where they inhabit small streams with running waters. The new species appears to have a mimetic association with the syntopic callichthyid Corydoras arcuatus. Herein, we argue in favor of the hypothesis that the interaction between species of Brachyrhamdia and Pimelodella or Corydoras is Mullerian mimicry. (AU)

FAPESP's process: 09/54931-0 - Improvement and management of biological specimen collections at the Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo
Grantee:Carlos Alberto Garofalo
Support Opportunities: Research Infrastructure Program - Biological specimen collections