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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 species of Moenkhausia (Characiformes: Characidae) from the rio Madeira basin, Brazil, with comments on the evolution and development of the trunk lateral line system in characids

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Author(s):
Ferreira Marinho, Manoela Maria [1] ; Ohara, Willian Massaharu [2] ; Paiva Dagosta, Fernando Cesar [3]
Total Authors: 3
Affiliation:
[1] Univ Fed Paraiba, Dept Sistemat & Ecol, Cidade Univ S-N, BR-58051900 Joao Pessoa, Paraiba - Brazil
[2] Univ Fed Rondonia, Lab Ciencias Ambientais, Av Paz 4376, BR-76916000 Presidente Medici, RO - Brazil
[3] Fundacao Univ Fed Grande Dourados, Fac Ciencias Biol & Ambientais, Rodovia Dourados Itahum, Km 12, BR-79804970 Dourados, MS - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Neotropical Ichthyology; v. 19, n. 2 2021.
Web of Science Citations: 0
Abstract

Abstract A new species of Moenkhausia is described from the rio Machado drainage, Amazon basin, Brazil. It is diagnosed from congeners by its color pattern, consisting of the concentration of chromatophores on the anterior portion of body scales, the horizontally elongate blotch on caudal peduncle, a bright golden coloration of the dorsal portion of eye when alive, and a dark line crossing the eye horizontally. The new species has variable morphology regarding trunk lateral-line canals. Most fully grown individuals do not have enclosed bony tube in many lateral line scales, resembling early developmental stages of tube formation of other species. This paedomorphic condition is interpreted as a result of developmental truncation. Such evolutionary process may have been responsible for the presence of distinct levels of trunk lateral line reductions in small characids. Variation in this feature is common, even between the sides of the same individual. We reassert that the degree of trunk lateral-line tube development must be used with care in taxonomic and phylogenetic studies, because reductions in the laterosensory system may constitute parallel loss in the Characidae. We suggest the new species to be categorized Near Threatened due to the restricted geographical distribution and continuing decline in habitat quality. (AU)

FAPESP's process: 11/50282-7 - An inventory of the Characiform fish fauna (Teleostei, Ostariophysi) from South America
Grantee:Naercio Aquino Menezes
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 17/09321-5 - Miniature Characiformes (Teleostei: Ostariophysi): evolution, diversity and biogeography
Grantee:Manoela Maria Marinho Koh
Support Opportunities: BIOTA-FAPESP Program - Young Investigators Grants
FAPESP's process: 13/22473-8 - Endemism and biogeographic analysis of fishes from Madeira River basin
Grantee:Willian Massaharu Ohara
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 16/19075-9 - Diversity and evolution of Gymnotiformes (Teleostei, Ostariophysi)
Grantee:Naercio Aquino Menezes
Support Opportunities: Research Projects - Thematic Grants