Descrição de nove espécies novas de Phenacogaster (Ostariophysi: Characiformes: Characidae) e comentários sobre as demais espécies do gênero

Lucena, Zilda Margarete Seixas de; Malabarba, Luiz Roberto

doi:10.1590/s1984-46702010000200014

Cited by 17 publications

(27 citation statements)

References 3 publications

(5 reference statements)

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“…prolatus , and P. tegatus ) and, considering the great diversity of species within this genus (e.g. Lucena & Malabarba, 2010), the discrepancy in the coding of this character may represent interspecific variation. Mirande (2010) coded Phenacogaster tegatus as having two series of rakers along the first epibranchial, but specimens of the species examined herein all lack the trailing series and the taxon was coded as state 1.…”

Section: Resultsmentioning

confidence: 99%

Phylogenetic study of the Characinae (Teleostei: Characiformes: Characidae)

Mattox

Toledo-Piza

2012

Zoological Journal of the Linnean Society

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The Characinae is a subunit of the Characidae of special significance in including Charax, the type genus of the family and the order Characiformes. Twelve genera and 79 species have been traditionally assigned to the Characinae, but the subfamily still lacks a phylogenetic diagnosis. Herein, a data matrix including 150 morphological characters and 64 taxa (35 species representing all genera of the Characinae and 29 included in other lineages within the Characiformes) was submitted to two cladistic analyses that differ in the inclusion/exclusion of Priocharax due to the difficulty of coding most of the character states in the miniature species of this genus. Both analyses resulted in a non‐monophyletic Characinae and this subfamily is herein restricted to only seven of the original 12 genera forming the clade (Phenacogaster((Charax Roeboides)(Acanthocharax(Cynopotamus(Acestrocephalus Galeocharax))))), which is supported by ten non‐ambiguous synapomorphies and is more closely related to other genera of the Characidae than those traditionally placed in the subfamily. A second clade includes the members of the tribe Heterocharacini (Lonchogenys(Heterocharax Hoplocharax)) as the sister‐group of Gnathocharax, supported by seven non‐ambiguous synapomorphies. This clade is more closely related to a taxon formed by Roestes and Gilbertolus based on seven non‐ambiguous synapomorphies. Results do not corroborate a close relationship between Roestes–Gilbertolus and the Cynodontinae. Inclusion of the genus Priocharax suggests that it is related more closely to the Heterocharacini, but the profound modifications in its anatomy possibly related to ontogenetic truncations obscure a better understanding of its relationships. A new classification of the Characinae and the Heterocharacinae is proposed. © 2012 The Linnean Society of London, Zoological Journal of the Linnean Society, 2012, 165, 809–915.

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Section: Resultsmentioning

confidence: 99%

Phylogenetic study of the Characinae (Teleostei: Characiformes: Characidae)

Mattox

Toledo-Piza

2012

Zoological Journal of the Linnean Society

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“…Jupiaba keithi is recorded from the Marowijne and Mana rivers of French Guyana (Zanata 1997); we found Jupiaba keithi in the Oyapock River. The recently described Phenacogaster wayana from Corantijn to Approuague rivers (Lucena and Malabarba 2010) is formally reported to Rio Amapá in Brazil. Odontostilbe gracilis occurs in a few places of the French Guyana (Planquette et al 1996); we collected only a single specimen in the Rio Amapá.…”

Section: Resultsmentioning

confidence: 97%

“…Expeditions had permission to collect wild species in Brazil under ICMBio license number 13.843-1 to Claudio Oliveira. Species identifications to the lowest taxonomic level were conducted consulting the taxonomic literature and identification keys (Géry 1977; Planquette et al 1996; Keith et al 2000; Le Bail et al 2000; Lucena and Malabarba 2010; Sidlauskas and Vari 2012; Peixoto et al 2015) and updated with Eschmeyer et al (2016). Classification follows the current phylogenetic arrangement of bony fishes (Betancur-R et al 2014).…”

Section: Methodsmentioning

confidence: 99%

An inventory of coastal freshwater fishes from Amapá highlighting the occurrence of eight new records for Brazil

Melo¹,

Benine²,

Britzke³

et al. 2016

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The Amazon Basin occupies a vast portion of northern South America and contains some of the highest species richness in the world. The northern Brazilian state of Amapá is delimited by the Amazonas River to the south, the Oyapock River to the northern boundary with French Guyana, and the Atlantic northeastern coast to Amazon estuary. Despite several expeditions to the Amazon in recent decades, little is known about the freshwater ichthyofauna from Amapá, with records limited to local inventories and species descriptions. This paper presents a compilation of the freshwater fish diversity sampled in fifteen sites covering two major Amapá ecoregions during the dry season of 2015. 120 species representing eight orders and 40 families are reported upon in this work. Eight species appear for the first time in the Brazilian territory providing new information for future conservation status evaluations.

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“…Additional male behaviours and morphological characters, such as courtship displays and fin colour and shape, also appear to play a role in mate choice in many fishes (Forsgren et al ., ), with fin variation being commonly observed in various fish groups (Py Daniel & Cox‐Fernandes, ). The differences in male and female anal‐fin shape observed herein is often used as a character in the study of Characidae systematics (Miquelarena & Aquino, ; Canan & Gurgel, ; Miquelarena & Aquino, ; Bertaco & Lucinda, ; Carvalho, ; Carvalho & Bertaco, ; Matheus, ; Bertaco et al, ; Carvalho et al, ; Lucena & Malabarba, ; Carvalho, ; Jerep & Malabarba, ). Nevertheless, there can be intrageneric variation in this pattern; for example, anal‐fin shape is similar in males and females of H. togoi (Oyakawa et al, ) and Hyphessobrycon nicolasi Miquelarena & López, (Miquelarena & López, ).…”

Section: Discussionmentioning

confidence: 99%

Development of secondary sexual characters and their relationship to ontogeny and seasonal reproductive period in Hyphessobrycon igneus (Ostariophysi: Characiformes)

Longoni

Giora

Fialho

2017

Journal of Fish Biology

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Sexual dimorphism in size, anal-fin shape and coloration of Hyphessobrycon igneus, Characidae, were examined. Males were more frequent at larger body sizes, confirming body size as a sexually dimorphic trait. Anal-fin shape and the colour of all fins were the same for females and juveniles, differing only in adult males. Likewise, only adult males had bony hooks on fin rays; larger and more sexually mature males had the most numerous and developed hooks and hooks were most developed in degree and number during peak reproductive periods. Fin hooks regressed in number and developmental degree after the reproductive period, but restarted development with the beginning of the new reproductive period without completely disappearing. Results show that bony hooks have a development and regression cycle related to reproductive seasonality.

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Descrição de nove espécies novas de Phenacogaster (Ostariophysi: Characiformes: Characidae) e comentários sobre as demais espécies do gênero

Cited by 17 publications

References 3 publications

Phylogenetic study of the Characinae (Teleostei: Characiformes: Characidae)

Phylogenetic study of the Characinae (Teleostei: Characiformes: Characidae)

An inventory of coastal freshwater fishes from Amapá highlighting the occurrence of eight new records for Brazil

Development of secondary sexual characters and their relationship to ontogeny and seasonal reproductive period in Hyphessobrycon igneus (Ostariophysi: Characiformes)

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