CECAV
URI permanente desta comunidadehttps://bdc.icmbio.gov.br/handle/cecav/1
Centro Nacional de Pesquisa e Conservação de Cavernas
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8 resultados
Resultados da Pesquisa
Item Reproduction, development, asymmetry and late eye regression in the Brazilian cave catfish Ituglanis passensis (Siluriformes, Trichomycteridae): evidence contributing to the neutral mutation theory(2021) Secutti, Sandro; Trajano, EleonoraThe troglobitic (exclusively subterranean source population) catfish Ituglanis passensis (Siluriformes, Trichomycteridae) is endemic to the Passa Três Cave, São Domingos karst area, Rio Tocantins basin, Central Brazil. This unique population presents variably reduced eyes and melanic pigmentation. We describe reproduction and early development in this species based on a spontaneous (non-induced) reproductive-event that occurred in the laboratory in January–February, 2009, while simultaneously comparing with data from the cave-habitat and a previous reproductive event. Egg laying was parceled. Egg-size and number were within variations observed in epigean congeners. Larvae behavior and growth is described. A single surviving specimen was monitored over two years. Eye-regression started late, one year after birth, and followed a pattern of stasis phases intercalated with slow growth and fluctuating asymmetric rates. Late eye regression, associated with asymmetry in eye development and intra-population variability of troglomorphic traits, as shown by several Brazilian subterranean fishes, provide support for the Neutral Mutation Theory.Item Natural history and population data of fishes in caves of the Serra do Ramalho karst area, Middle São Francisco basin, northeastern Brazil(Biota Neotropica, 2009) Trajano, Eleonora; Secutti, Sandro; Bichuette, Maria ElinaItem Differentiating cave Aspidoras catfish from a karst area of Central Brazil, upper rio Tocantins basin (Siluriformes: Callichthyidae)(Neotropical Ichthyology, 2011) Secutti, Sandro; Reis, Roberto E.; Trajano, EleonoraItem Ictiofauna da área cárstica de Presidente Olegário, Estado de Minas Gerais, com ênfase nas espécies subterrâneas(Revista da Biologia, 2013) Secutti, Sandro; Bichuette, Maria ElinaItem Surface and subterranean ichthyofauna in the Serra do Ramalho karst area, northeastern Brazil, with updated lists of Brazilian troglobitic and troglophilic fishes(Biota Neotropica, 2008) Mattox, George Mendes Taliaferro; Bichuette, Maria Elina; Secutti, Sandro; Trajano, EleonoraItem Population decline in a Brazilian cave catfish, Trichomycterus itacarambiensis Trajano & Pinna, 1996 (Siluriformes): reduced flashflood as a probable cause(Speleobiology Notes, 2009) Trajano, Eleonora; Secutti, Sandro; Bichuette, Maria ElinaItem Epigean and subterranean ichthyofauna in Cordisburgo karst area, eastern Brazil(Biota Neotropica, 2009) Trajano, Eleonora; Secutti, Sandro; Mattox, George Mendes TaliaferroItem Reproductive behavior, development and eye regression in the cave armored catfish, Ancistrus cryptophthalmus Reis, 1987 (Siluriformes: Loricariidae), breed in laboratory(Neotropical Ichthyology, 2009) Secutti, Sandro; Trajano, Eleonora