Title
Redefinition of Heptapterus (Heptapteridae) and description of Heptapterus carmelitanorum, a new species from the upper Paraná River basin in Brazil
Date Issued
01 January 2022
Access level
open access
Resource Type
journal article
Author(s)
Publisher(s)
Pensoft Publishers
Abstract
A new diagnosis and a new classification of Heptapterus are provided and a new species, H. carmelitanorum, is described. Heptapterus is diagnosed by the following character combination: adipose fin confluent with the caudal fin; non-bifurcate caudal fin; anal-fin insertion posterior to vertical through adipose-fin insertion; 10–23 anal-fin rays; anal fin not confluent with caudal fin; and extremely elongate body, with a head length of 16.1–24.9%SL. Species included in Heptapterus are H. borodini, H. carmelitanorum, H. carnatus, H. exilis, H. hollandi, H. mandimbusu, H. mbya, H. mustelinus, H. ornaticeps, and H. qenqo. Some of the character states diagnosing H. carmelitanorum among its congeners are the anal-fin insertion less than one eye diameter posterior to a vertical through the adipose-fin insertion (vs. more than one eye diameter in all congeners); the isognathous mouth (vs. slightly to moderately retrognathous, except H. borodini); and the keel formed by ventral procurrent caudal-fin rays shallow, far from reaching anal-fin base (vs. keel formed by ventral procurrent caudal-fin rays deep, continuing almost to the anal-fin base, except in H. borodini and H. hollandi).
Start page
327
End page
343
Volume
98
Issue
2
Language
English
OCDE Knowledge area
Conservación de la Biodiversidad
Biología marina, Biología de agua dulce, Limnología
Subjects
Scopus EID
2-s2.0-85138632955
Source
Zoosystematics and Evolution
ISSN of the container
14351935
Sponsor(s)
We are grateful to Paula N. Coelho, Manoel T. Azevedo, and Eugen E. Horváth for help with fieldwork. To Edmar Bueno and Glicério Martins for allowed access to the type locality of the new species. Maria Ines Borella and Marcos Antonio Pereira de Godoy, who allowed access to the Mu-seu de História Natural de Pirassununga. To Wagner M.S. Sampaio and Patrícia Giongo to allow us access to examine heptapterids of Instituto de Pesquisa em Fauna Neotropical. To Isabel M. Soares, who helped the authors in the analysis of some comparative specimens. To Claudio de Oliveira (LBP), Cristiano Moreira (MNRJ), Nathan Lu-jan (AMNH), Mark Sabaj and Mariangles Arce (ANSP), C. McMahan, S. Mochel and K. Sagel (FMNH), Felipe P. Ottoni (UFMA) and Luiz Malabarba and Juliana Wing-ert (UFRGS) for curatorial assistance; and Marcelo Sales/ MNRJ for helping with X-rays images (Equipamento de Radiografia Digital da Central Analítica Virtual do Museu Nacional, Universidade Federal do Rio de Janeiro FINEP Proc 14629-3; Proinfra 01/2007). To Josie South (University of Leeds) and three reviewers for the suggestions that help us to improve the quality of this study. This manuscript is dedicated to Valter M. Santos, Isabel C. Azevedo Santos, Valquíria Achcar M. Silva (in memoriam), M. Lourdes Cabral, Manoel T. Azevedo Filho, Luiz Fernando de Aze-vedo, and Joaquim da Silva Junior, some of the Carmeli-tanos who had important role in the formation of the first author of the species. AMK was supported by Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ; grant E-26/202.005/2020); and DRFF was supported by the Böhlke Award from the Academy of Natural Science of Drexel University (ANSP) and by the Grainger Bioinformatics Center funding at the Field Museum of Natural History (FMNH).
We are grateful to Paula N. Coelho, Manoel T. Azevedo, and Eugen E. Horváth for help with fieldwork. To Edmar Bueno and Glicério Martins for allowed access to the type locality of the new species. Maria Ines Borella and Marcos Antonio Pereira de Godoy, who allowed access to the Museu de História Natural de Pirassununga. To Wagner M.S. Sampaio and Patrícia Giongo to allow us access to examine heptapterids of Instituto de Pesquisa em Fauna Neotropical. To Isabel M. Soares, who helped the authors in the analysis of some comparative specimens. To Claudio de Oliveira (LBP), Cristiano Moreira (MNRJ), Nathan Lujan (AMNH), Mark Sabaj and Mariangles Arce (ANSP), C. McMahan, S. Mochel and K. Sagel (FMNH), Felipe P. Ottoni (UFMA) and Luiz Malabarba and Juliana Wingert (UFRGS) for curatorial assistance; and Marcelo Sales/ MNRJ for helping with X-rays images (Equipamento de Radiografia Digital da Central Analítica Virtual do Museu Nacional, Universidade Federal do Rio de Janeiro FINEP Proc 14629-3; Proinfra 01/2007). To Josie South (University of Leeds) and three reviewers for the suggestions that help us to improve the quality of this study. This manuscript is dedicated to Valter M. Santos, Isabel C. Azevedo Santos, Valquíria Achcar M. Silva (in memoriam), M. Lourdes Cabral, Manoel T. Azevedo Filho, Luiz Fernando de Azevedo, and Joaquim da Silva Junior, some of the Carmelitanos who had important role in the formation of the first author of the species. AMK was supported by Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ; grant E-26/202.005/2020); and DRFF was supported by the Böhlke Award from the Academy of Natural Science of Drexel University (ANSP) and by the Grainger Bioinformatics Center funding at the Field Museum of Natural History (FMNH).
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