SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Costa,Wilson J. E. M.; Ramos,Telton P. A; Alexandre,Luisa C; Ramos,Robson T. C.

Cynolebias parnaibensis from the Canindé River drainage, Parnaíba River basin, northeastern Brazil, is described. It is considered to be a member of a clade endemic to the Caatinga. The clade is diagnosed, e. g., by a series of structural modifications of the pharyngeal jaw apparatus, which is related to the sound production exhibited by males during courtship behavior. The courtship sound of C. parnaibensis consists of a single pulse named as thump (duration 0.031-0.133s; interthump intervals 0.020-8.319s; dominant frequency 70.3-93.8 Hz). The new species is distinguished from all other congeners by a combination of 27-31 neuromasts around eye, 29-33 supraorbital neuromasts, 16-18 dorsal-fin rays and 19 anal-fin rays in males, 28-31 caudal-fin rays, 33-36...

Kryptolebias, a substitute name for Cryptolebias Costa, 2004 and Kryptolebiatinae, a substitute name for Cryptolebiatinae Costa, 2004 (Cyprinodontiformes: Rivulidae)

Palavras-chave: Taxonomy; Systematics; Bioacustics; Etology; Sexual behavior.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200006

Kryptolebias, new name, is proposed to replace Cryptolebias Costa, 2004, preoccupied by Cryptolebias Gaudant, 1978, a monotypic genus of European fossil fish. As a consequence, Kryptolebiatinae is erected, substituting Cryptolebiatinae Costa.

Rivulus kirovskyi, a new killifish from the central Amazon, Brazil (Cyprinodontiformes: Rivulidae)

Palavras-chave: Zoological nomenclature; Systematics; Taxonomy.

Ano: 2004

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000200009

Rivulus kirovskyi, new species, from the central Amazon, lower rio Negro drainage, northern Brazil, is described. It is a member of an assemblage that includes R. amanapira, R. atratus, R. ornatus, R. rectocaudatus, R. romeri, R. tecminae, and R. uakti, and is diagnosed by a unique pattern of frontal squamation and a derived color pattern of the infraorbital region. Relationships of the new species with other taxa of the group are unclear at the present. It is similar to R. atratus, R. ornatus, and R. romeri in having an apomorphic reduction of anal-fin rays and by the absence of caudal spot in females, and similar to R. amanapira, R. rectocaudatus, R. romeri, R. tecminae, and R. uakti, by the absence of preopercular canal and dermosphenotic. Rivulus...

Descriptive morphology and phylogenetic relationships among species of the Neotropical annual killifish genera Nematolebias and Simpsonichthys (Cyprinodontiformes: Aplocheiloidei: Rivulidae)

Palavras-chave: Systematics; Rio Amazonas basin; Rio Negro; Neotropical.

Ano: 2004

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000100002

Structures of the external morphology and skeleton of the annual fish genera Nematolebias and Simpsonichthys are described and illustrated. Phylogenetic relationships among all included species of both genera and other cynolebiatins are estimated, based on 116 morphological characters in a total of 50 terminal taxa. Nematolebias is hypothesized to be the sister group of a clade including Simpsonichthys, Austrolebias , Megalebias, and Cynolebias, which is diagnosed by ventral portion of mesopterygoid not overlapping quadrate, third neural spine approximately as wide as fourth neural spine, ventral condyle of coracoid narrow, scales slightly extending over anal-fin base, loss of vomerine teeth, loss of neuromast anterior to infraorbital series, ventral...

Austrolebias varzeae, a new annual fish from the upper rio Uruguay basin, southern Brazil (Cyprinodontiformes: Rivulidae)

Palavras-chave: Systematics; Cladistics; Cynolebiatinae; Spectrolebias; Xenurolebias; Ophthalmolebias; Hypsolebias.

Ano: 2006

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000100001

Costa,Wilson J. E. M.; Reis,Roberto E.; Behr,Everton R..

Austrolebias varzeae n. sp. is described from rio da Várzea floodplains, upper rio Uruguay basin, southern Brazil. It seems to be closely related to A. carvalhoi (Myers), with which it shares a similar color pattern of male and an apomorphic morphology of the autopalatine. The new species differs from A. carvalhoi by having more anal-fin rays in males and more caudal-fin rays. Austrolebias varzeae is distinguished from all other species of the genus by a unique color pattern, in which there are three distinctively darker and narrower bars on the anterior portion of male flank. Putative close relationships between A. varzeae and A. carvalhoi suggest a closely related biogeographic history between upper Uruguay and upper Iguaçu River basins, corroborated by...

Austrolebias paucisquama (Cyprinodontiformes: Rivulidae), a new species of annual killifish from southern Brazil

Palavras-chave: New species; Killifishes; Systematics; Neotropical.

Ano: 2004

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000100003

Ferrer,Juliano; Malabarba,Luiz R.; Costa,Wilson J. E. M..

Austrolebias paucisquama is described from the rio Vacacaí drainage, a tributary to the rio Jacuí, Rio Grande do Sul, Brazil. The new species belongs to the Austrolebias alexandri species-group, by sharing the apomorphic bright blue iridescence and dark gray pectoral fins in males. It is distinguished from other species of this group by having fewer scales around caudal peduncle (12) and fewer dorsal-fin rays in males (17-21). The lack of contact organs on the inner surface of the pectoral fin in males and the color pattern of females - ground color light brownish, sides of body with a variable number of relatively large dark black spots distributed mostly on posterior portion of body - distinguish A. paucisquama from all other species of the genus.

Seven new species of the killifish genus Rivulus (Cyprinodontiformes: Rivulidae) from the Paraná, Paraguay and upperAraguaia river basins, central Brazil

Palavras-chave: Systematics; Austrolebias alexandri species-group; Endangered species.

Ano: 2008

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200004

Seven new species of the Rivulus punctatus group collected during recent field studies in central Brazil are described. Rivulus dapazi n. sp., from the upper rio Correntes drainage, rio Paraguay basin, is diagnosed by a unique color pattern of the anal and caudal fins in males; R. cyanopterus n. sp., from the upper rio São Lourenço drainage, rio Paraguay basin, is diagnosed by a unique color pattern of the anal fin in both sexes; R. rossoi n. sp., from the rio Inhanduí drainage, rio Paraná basin, is diagnosed by a unique color pattern of the caudal fin in males and a reduced number of gill rakers on the first branchial arch; R. litteratus n. sp., from the upper rio Araguaia basin, is diagnosed by unique color patterns of flank in males and caudal fin in...

A new species of Trichomycterus (Siluriformes: Trichomycteridae) from lagoa Feia drainage, southeastern Brazil

Palavras-chave: Systematics; Cerrado; Neotropic.

Ano: 2005

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000100003

Lima,Sergio M. Q.; Lazzarotto,Henrique; Costa,Wilson J. E. M..

Trichomycterus caipora, new species, is described from rio Macabu basin, lagoa Feia drainage, serra de Macaé, southeastern Brazil. The new species is distinguished from its congeners from southern and southeastern Brazil by the combination of: the presence of nine pectoral-fin rays, caudal fin emarginated and high number of opercular and interorpecular odontodes. Ecological notes are presented and putative phylogenetic relationships and characters shared with congeners are discussed.

Descrição de cinco novas espécies de Rivulus das bacias dos rios Paraná e São Francisco (Cyprinodontiformes, Rivulidae)

Palavras-chave: Catfishes; Trichomycterus caipora; Freshwater fishes; Atlantic Forest; Rio de Janeiro State; Rio Macabu basin.

Ano: 2008

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300004

Zoologia

Description of five new species of Rivulus from Paraná and São Francisco rivers basins (Cyprinodontiformes, Rivulidae) and a key to identification of the especies from Central Brazil, are given.