Consulta: subjectFacets:"Rapids"
Registros recuperados: 2
Data/hora: 02/06/2024 02:25:42

Tometes camunani (Characiformes: Serrasalmidae), a new species of phytophagous fish from the Guiana Shield, rio Trombetas basin, Brazil
Provedor de dados: 83
Autores: Andrade,Marcelo C.; Giarrizzo,Tommaso; Jégu,Michel.
A new species of Serrasalmidae, Tometes camunani, is described from the upper drainages of the rio Trombetas basin, Pará State, Brazil. The new species is distinguished from its congeners by having neurocranium with a slight concavity at the level of the frontal bone (vs. concavity absent, dorsal profile of neurocranium straight). It can be further distinguished from its congeners by having teeth with central cusp taller and acute (vs. central cusp shorter and with rounded edge in T. trilobatus), a terminal mouth (vs. upturned mouth in T. lebaili), and 12-26 prepelvic spines (vs. 0-9 in T. makue). The new species is strictly rheophilic like other species of Tometes, and occurs exclusively in the rapids of shield rivers, complex and fragile biotopes that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon basin; Herbivorous fishes; Rapids; Rheophily; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000200297

A new species of Characidium (Characiformes: Crenuchidae) from coastal basins in the Atlantic Rainforest of eastern Brazil, with phylogenetic and phylogeographic insights into the Characidium alipioi species group
Provedor de dados: 83
Autores: Malanski,Evandro; Sarmento-Soares,Luisa Maria; Silva-Malanski,Ana Cecilia Gomes; Lopes,Maridiesse Morais; Ingenito,Leonardo Ferreira da Silva; Buckup,Paulo Andreas.
ABSTRACT A new species of Characidium from southeastern Brazil is described based on morphological and molecular evidence from specimens collected between the rio Jucuruçu and rio Doce basins. The new species belongs to a group of species within Characidium with an unscaled area in the isthmus and is distinguished from these species, except C. alipioi, C. fasciatum, C. hasemani, and C. kamakan, by the greater distance (greater than 10% SL) and presence of 5-7 scales between the anus and the anal fin, and presence of 14 series of scales around the caudal peduncle. The species is distinguished from C. alipioi by having 4 series of scales above the lateral line (vs. 5 series) and greater distance between the anus and the anal fin; from C. fasciatum and C....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bahia; DNA barcode; Espírito Santo; Rapids; South American darter.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000200212