Consulta: creatorFacets:"Matamoros,Wilfredo A."
Registros recuperados: 3
Data/hora: 09/06/2024 04:23:39

Species or population? Systematic status of Vieja coatlicue (Teleostei: Cichlidae)
Provedor de dados: Neotropical Ichthyology
Autores: McMahan,Caleb D.; Matamoros,Wilfredo A.; Elías,Diego J.; Piller,Kyle R.
ABSTRACT Pacific and Atlantic-slope rivers of the Isthmus of Tehuantepec in Mexico contain two cichlid species of the genus Vieja relevant to the current study, V. zonata and V. coatlicue, respectively. The Atlantic-slope species was initially considered a population of uncertain taxonomic status and recently described as a distinct species based on three putatively diagnostic morphological characters. The objective of this study was to combine new and existing genetic data, along with reanalysis of morphological characters, to test the distinctiveness of V. coatlicue. Little genetic variability and no geographic structuring were recovered. Additionally, putatively diagnostic morphological character states were present across both species, failing to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cichlid; Freshwater; Mexico; River; Taxonomy.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000200204

A new species of Roeboides (Teleostei: Characidae) from Costa Rica and Panama, with a key to the middle American species of the genus
Provedor de dados: Neotropical Ichthyology
Autores: Matamoros,Wilfredo A.; Chakrabarty,Prosanta; Angulo,Arturo; Garita-Alvarado,Carlos A.; McMahan,Caleb D.
A new species of Roeboides is described from the Pacific slope of Costa Rica and Panama. Roeboides bussingi differs from all other Central American Roeboides and all members of the R. guatemalensis species group by the following combination of characters: presence of 18-22 scales above the lateral line (vs. 12-16 in R. dientito); 15-22 scales below the lateral line (vs. 10-14 in R. dientito, and 20-24 in R. loftini); an inconspicuous, sometimes absent, crescent-shaped humeral spot (vs. a large round, conspicuous humeral spot in R. carti, R. dayi, R. dientonito, R. ilseae, R. loftini,and R. occidentalis); a small wedge-shaped spot that does not reach the lateral line (vs. a large spot crossing the lateral line in R. guatemalensis); a teardrop shaped caudal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central America; Characinae; Distribution; Freshwater; Pacific Slope.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000200285

The contribution of environmental factors to fish assemblages in the Río Acahuapa, a small drainage in Central America
Provedor de dados: Neotropical Ichthyology
Autores: Álvarez,Francisco S.; Matamoros,Wilfredo A.; Chicas,Francisco A.
ABSTRACT The ichthyofauna of the Río Acahuapa was analyzed sampling 17 sites that included the basin main channel and its tributaries. Fish were collected using dip-nets, seine-nets and electrofishing. Fish standard length and species abundance were recorded. Species origin and salinity tolerance criteria were used to classify fish species. Water physicochemical variables, habitat structure and sampling sites elevation were recorded. A total of 33 fish species were registered, 12.1% are primary, 45.5% are secondary and 42.4% are of marine derivation. Fish species richness declined with increase of elevation (R2=0.55, p=0.0006). Two assemblages of fishes were identified: the first one associated to sites of low elevations (19-184 masl), composed mainly of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community structure; Fish ecology; Freshwater fish; Habitat structure; Tropical streams.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000300213