A new species of Corydoras Lacépède (Siluriformes: Callichthyidae) from the Rio Tapajós basin and its phylogenetic implications

Espíndola, Vinicius C.; Spencer, Marcelo R.S.; Rocha, Leandro R.; Britto, Marcelo R.

doi:10.1590/0031-1049.2014.54.03

Cited by 4 publications

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References 9 publications

(12 reference statements)

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“…Available literature records about the ichthyofauna of the rio Tapajós basin are primarily concerned with the description of new species (Bertaco & Malabarba 2007, Bertaco & Carvalho 2005a, b, Bertaco & Garutti 2007, Birindelli et al 2008, Britski & Garavello 1980, 1993, Britski & Lima 2008, Caires & Figueiredo 2011, Caires 2013, Calegari et al 2013, Carvalho & Bertaco 2006, Castro 1993, Carvalho & Datovo 2012, Campos-da-Paz 2002, Costa 1991, 1994, Dagosta & Netto-Ferreira 2015, Eigenmann 1908, 1917, de Oliveira et al 2010, Dutra et al 2012, Espíndola et al 2014, Fink 1979, Feitosa et al 2011, Fichberg et al 2014, Fink 1979, Fisch-Muller et al 2005a, b, Géry 1980, Hollanda-Carvalho & Weber 2005, Isbrücker & Nijessen 1989, Kullander 1988, Kullander 1990, Kullander & Ferreira 2006, Langeani 1999, Lima et al 2007, Lima & Flausino 2016, Loeb 2012, Lucena 2003, Lujan et al 2010, Lundberg & Mago-Leccia 1986…”

Section: Discussionmentioning

confidence: 99%

Ichthyofauna of the upper Juruena river on Chapada dos Parecis, Mato Grosso, Brazil

Ohara

Loeb

2016

Biota Neotrop.

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The fishes herein included were collected in four small streams of the upper rio Tapajós basin. Through fieldwork carried out in 2011, 2013 and 2014 during the low water season 1.728 specimens belonging to 22 species distributed in 11 families, and five orders were captured. Characidae was the most representative family both in number of species and specimens captured. The most abundant species were Hyphessobrycon melanostichos, H. hexastichos, and H. notidanos. Five species are recognized as new, and four as endemic to the upper rio Tapajós basin. This study represents the first fish inventory for the region and will provide valuable information for the conservation of the poorly known diversity of fishes of the Chapada dos Parecis, in the headwaters of the upper rio Tapajós basin. Keywords: South America, Neotropical fish, Amazon, endemism. Ictiofauna do alto rio Juruena na Chapada dos Parecis, Mato Grosso, BrasilResumo: Os peixes registrados aqui foram coletados em quatro igarapés da bacia do alto rio Tapajós. Expedições realizadas em 2011, 2013 e 2014 durante a estação de seca resultaram na coleta de 1.728 indivíduos pertencendo à 22 espécies distribuídas em 11 famílias e cinco ordens. Characidae foi a família com o maior número de espécies e espécimes capturados. As espécies com maior abundância foram Hyphessobrycon melanostichos, H. hexastichos e H. notidanos. Cinco espécies são reconhecidas como novas e quatro como endêmicas da bacia do alto rio Tapajós. Este trabalho representa o primeiro inventário sobre os peixes da região e fornecerá informações valiosas para a conservação da diversidade pouco conhecida de peixes da Chapada dos Parecis, nas cabeceiras da bacia do alto rio Tapajós. Sul, peixe Neotropical, Amazônia, endemismo. Palavras-chave: América do

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Section: Discussionmentioning

confidence: 99%

Ichthyofauna of the upper Juruena river on Chapada dos Parecis, Mato Grosso, Brazil

Ohara

Loeb

2016

Biota Neotrop.

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“…Dagosta et al 2012), and descriptions of new species (e.g. Kullander and Ferreira 2005; Lima et al 2009; Sousa et al 2010; Ribeiro et al 2011; Dutra et al 2012; Teixeira et al 2013; Espíndola et al 2014; Román-Valencia et al 2014; Silva-Oliveira et al 2015). …”

Section: Introductionmentioning

confidence: 99%

Stream ichthyofauna of the Tapajós National Forest, Pará, Brazil

Silva-Oliveira¹,

Canto²,

Ribeiro³

2016

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The fish fauna of freshwater streams in the Tapajos National Forest was surveyed and a list of species is presented. The sampling was conducted from 2012 to 2013 during the dry season. Fish were collected with dip nets and seine nets in 22 streams of 1st to 3rd order. Sampling resulted in 3035 specimens belonging to 117 species, 27 families and six orders. The most abundant species were Bryconops aff. melanurus, Hemigrammus belottii, and Hemigrammus analis. Four undescribed species were recognized, one of which is known only from the area of this study. A significant dissimilarity was observed in fish species composition among drainage systems. This is the first survey of the stream ichthyofauna in the Tapajós National Forest, and it presents relevant information for future studies and decision-making in the management and conservation of fish fauna in this conservation unit.

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Ultrastructure and ssrRNA sequencing of Myxidium amazonense n. sp. a myxosporean parasite of Corydoras melini from the Rio Negro river, Amazonas state, Brazil

et al. 2015

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In a survey of myxozoan parasites of ornamental freshwater fish from the Rio Negro river, it was found that seven of 30 (23.3 %) Corydoras melini specimens examined had plasmodia of a new Myxidium species (Myxidium amazonense n. sp.) in the gallbladder. The fish were caught in the Rio Negro river, in the municipality of Santa Isabel do Rio Negro, in the state of Amazonas, Brazil. The plasmodia had a tubular shape, which was organized as a spiral spring with several turns in the gallbladder. The development of the myxospores was asynchronic, with disporic pansporoblasts. Mature myxospores were elongated, with 17.0 ± 0.9 (16.1-17.9) μm in length and 3.7 ± 0.7 (3.0-4.4) μm in width, and lightly arcuate from the valval view, with their bodies tapering slowly until ending in rounded extremities. The valval surface had nine to ten grooves in each valve. The polar capsules, one at either end of the spore, had a length of 5.4 ± 0.5 (4.9-5.9) μm and a width of 3.4 ± 0.6 (2.8-4.0) μm. Ultrastructural analysis showed that the wall of the plasmodia had numerous microvilli-like structures, pinocytotic canals, and cytoplasmic bridges connecting the pansporoblasts to each other and to the ectoplasm zone. Phylogenetic analysis, based on a small subunit ribosomal RNA (ssrRNA), identified the new species as a sister species of Myxidiumceccarelli, the unique South American Myxidium species whose ssrRNA sequence is available in the NCBI database. This study is the first description of Myxidium species in ornamental freshwater fish from Amazon.

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A new species of Corydoras Lacépède (Siluriformes: Callichthyidae) from the Rio Tapajós basin and its phylogenetic implications

Abstract: A new species of Corydoras is described from tributaries of the rio Arinos, rio Teles Pires and rio Preto, all in the rio

Cited by 4 publications

References 9 publications

Ichthyofauna of the upper Juruena river on Chapada dos Parecis, Mato Grosso, Brazil

Ichthyofauna of the upper Juruena river on Chapada dos Parecis, Mato Grosso, Brazil

Stream ichthyofauna of the Tapajós National Forest, Pará, Brazil

Ultrastructure and ssrRNA sequencing of Myxidium amazonense n. sp. a myxosporean parasite of Corydoras melini from the Rio Negro river, Amazonas state, Brazil

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