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| Ribeiro,Alexandre Cunha. |
| The eastern Brazilian coastal drainages are of great biogeographical significance, because of their highly endemic fish faunas. Phylogenetic patterns suggest a close biotic relationship between the rivers that flow into the Atlantic and those on the adjacent upland crystalline shield. However, little has been said on the dynamics of the geological processes causally related to the cladogenetic events between these areas. Distributional and phylogenetic patterns suggest a close association with the geological history of the passive continental margin of South America, from the Cretaceous to the present day. In this area megadome uplifts, rifting, vertical movements between rifted blocks and the erosive retreat of the South American eastern continental... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fishes; Distributional Patterns; Passive Margin; South America; Tectonics. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000200009 |
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| Menezes,Naércio Aquino; Ribeiro,Alexandre Cunha. |
| The new species herein described, collected in the Jacuí and Uruguay River basins, Rio Grande do Sul, Brazil, can be distinguished from the already known species of the genus, but Oligosarcus jenynsii, O. perdido, O. acutirostris, O. solitarius and O. hepsetus, by the number of perforated lateral line scales. It shares with the first two species the absence of a premaxillary foramen, present in the last three species and differs from O. jenynsii by having a smaller orbital diameter and the tip of the pectoral fin failing to reach the pelvic-fin origin, and from O. perdido by the presence of more horizontal scale rows around the caudal peduncle. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Freshwater fish; South America; Neotropical; Systematics; Taxonomy. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000300010 |
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| Zeppelini Filho,Douglas; Ribeiro,Alexandre Cunha; Ribeiro,Guilherme Cunha; Fracasso,Maria Paula Aguiar; Pavani,Marcelo Monetti; Oliveira,Otto Müller Patrão; Oliveira,Sérgio Adriano de; Marques,Antonio Carlos. |
| The fauna of eight sandstone caves of the region of Altinópolis, (Serra Geral Arenitic Speleological province, São Paulo State, Southeastern Brazil) was surveyed. Our results improve the previous faunistic knowledge of the region, recording 15 new occurrences for Brazilian caves and 26 for Brazilian sandstone caves. The fauna is characterized by a large number of detritivores/omnivores such as crickets and cockroaches, and several predators like spiders and heteropterans in bat guano. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cave fauna; Sandstone caves. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492003000500001 |
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