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Registros recuperados: 5
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Ichthyofauna of Seridó/Borborema: a semi-arid region of Brazil Biota Neotropica
Silva,Márcio Joaquim da; Ramos,Telton Pedro Anselmo; Diniz,Virginia Dantas; Ramos,Robson Tamar da Costa; Medeiros,Elvio Sergio Figueredo.
The Seridó/Borborema region is located between the States Paraíba and Rio Grande do Norte and a priority area for conservation of the Caatinga. This region is under the hydrological influence of the middle portion of Piranhas-Açu River basin. Previous systematic inventories of the ichthyofauna of this Caatinga’s area are not significant. The Caatinga fish fauna is threatened due the advancement of historic anthropogenic activities, mainly agricultural. Furthermore, another relevant aspect is the recent governmental decision of transferring water from São Francisco River to other Northern river basins, which includes the Piranhas-Açu basin. This study performed a systematic survey of the Seridó/Borborema’s ichthyofauna. The sites were sampled during the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Inventory; Fish; Piranhas-Açu River; Caatinga; Northeastern Brazil.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000300117
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Ichthyofauna of the Parnaíba river Basin, Northeastern Brazil Biota Neotropica
Ramos,Telton Pedro Anselmo; Ramos,Robson Tamar da Costa; Ramos,Stéfane Almeida Q.A..
The Parnaíba River is the largest hydrographic basin with its limits entirely within the northeastern region of Brazil. It is one of the few perennial rivers in the Brazilian Northeastern Region, running predominantly in the area of Caatinga on the eastern portion (with intermittent drainages associated to this type of environment), and partly extending into the Cerrado region on the western portion. The objective of this study was to describe the diversity of freshwater fishes of the Parnaíba River basin by conducting a comprehensive ichthyofauna inventory of the basin. The sampling design of this study was based on the placement of (1) Fixed Sites for seasonal collection (dry and wet season, two years) in the three portions of the main course of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Parnaíba River; Ichthyofauna; Northeastern Brazil; Neotropical Region.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000100204
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Ichthyofauna of the Mamanguape river basin, Northeastern, Brazil Biota Neotropica
Oliveira-Silva,Leonardo; Ramos,Telton Pedro Anselmo; Carvalho-Rocha,Yuri Gomes Ponce; Viana,Katherine Morais Porto; Avellar,Raizze da Costa; Ramos,Robson Tamar da Costa.
Abstract: The Mamanguape River Basin is located in a peripheral semi-arid area of South America, with its headwaters and middle reaches running through the Caatinga (from wetter to drier) and its lower reaches through the Atlantic Forest. The objective of this study was to inventory the fish fauna of the Mamanguape river basin through a comprehensive sampling and to discuss its ichthyofaunal dominance pattern. Sampling was conducted between 2015 and 2016 at 38 points throughout. The main river course was sampled at 18 fixed points during two expeditions (dry and wet seasons) using traw nets, cast nets, and dip nets, with a standardized effort. The tributaries were sampled during the dry season at 20 points using an adaptaptation of the AquaRAP methodology....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neotropical Region; Brazilian Semiarid; Freshwater Fish; Species List; Dominance; Endemism.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000300204
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Effects of riparian vegetation on the structure of the marginal aquatic habitat and the associated fish assemblage in a tropical Brazilian reservoir Biota Neotropica
Beltrão,Gabriel de Barros Moreira; Medeiros,Elvio Sergio Figueredo; Ramos,Robson Tamar da Costa.
Riparian zones represent areas of strong biological, physical and chemical interaction between terrestrial and aquatic ecosystems. These areas are usually typified by high diversity of fauna, flora and environmental processes. The present study evaluates the littoral habitat structure and its fish fauna related to associations between presence and absence of natural riparian vegetal cover, in a reservoir in northeastern Brazil. Sampling was performed on marginal areas where riparian vegetation was present and where it had been removed for the plantation of sugar cane. For each type of marginal area three replicate sites were sampled during the wet season. Data on the habitat structure (submerged elements and substrate composition), fish and water quality...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Riparian zone; Habitat structure; Water management; Conservation.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000400003
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Redescription of Hypostomus johnii, a senior synonym of Hypostomus eptingi (Siluriformes: Loricariidae), Northeastern Brazil Neotropical Ichthyology
Ramos,Telton Pedro Anselmo; Zawadzki,Claudio Henrique; Ramos,Robson Tamar da Costa; Britski,Heraldo Antônio.
ABSTRACT Hypostomus johnii (Steindachner) was described from the rio Parnaíba basin in the state of Piauí and the rio São Francisco basin in the state of Bahia. Despite the good quality of the original description of H. johnii, it does not currently allow its distinction from congeners. Thus, H. johnii is redescribed based on the analysis of the types and several recently collected specimens. Recent collecting efforts of the rios Parnaíba and São Francisco basins resulted in specimens only being found in the rio Parnaíba basin. This raises doubts about whether H. johnii occurs in the rio São Francisco basin. The species is distinguished from its congeners by having a high number of teeth on the premaxilla and dentary (between 60-115); small to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Armoured catfish; Freshwater fish; Hypostominae; Neotropical fish; Taxonomy.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200213
Registros recuperados: 5
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