Ocupação espacial, alimentação e época reprodutiva de duas espécies de Corydoras Lacépède (Siluroidei, Callichthyidae) coexistentes no rio Alambari (Botucatu, São Paulo)

Aranha, José Marcelo Rocha; Caramaschi, Érica Pellegrini; Caramaschi, Ulisses

doi:10.1590/s0101-81751993000300013

Cited by 30 publications

(34 citation statements)

References 19 publications

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“…8). This long reproductive period supported Nikolsk's conclusions (1963) that species from tropical regions tended to present a long reproductive period, which was observed by several other authors (Aranha et al, 1993, Araújo et al, 1999, Araújo and Garutti, 2002and Mazzoni et al, 2002. Both the Astyanax species under study presented differences in the populational aspects.…”

Section: 3313supporting

confidence: 87%

Population structure of two Astyanax Baird & Girard, 1854 (Teleostei, Characidae) species from upper Paraguaçu river

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Novaes

2008

Braz. arch. biol. technol.

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Section: 3313supporting

confidence: 87%

Population structure of two Astyanax Baird & Girard, 1854 (Teleostei, Characidae) species from upper Paraguaçu river

Santos

Novaes

2008

Braz. arch. biol. technol.

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“…This microhabitat is occupied by C. aeneus, that occurs in groups of six to ten individuals. A similar spatial occupation for this species was reported by Aranha et al (1993) in the Rio Alambari, southeastern Brazil.…”

Section: Longitudinal Distribution and Microhabitatrelated Diversitysupporting

confidence: 84%

Fish assemblage structure in a first order stream, southeastern Brazil: longitudinal distribution, seasonality, and microhabitat diversity

Casatti

2005

Biota Neotrop.

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This study was carried out on a first order stream in the Morro do Diabo State Park, southeastern Brazil. Three equidistant stream stretches -upper, middle, and lower -were chosen for underwater observations and fish collections that were performed in the dry (June and September 2000) and wet seasons (December 2000 and March 2001). Of the 18 fish species documented, 11 were considered resident year round. Phalloceros caudimaculatus, Hypostomus nigromaculatus, Hisonotus francirochai, Trichomycterus diabolus, and Hypostomus ancistroides represented 90% of the collected specimens. The highest richness and abundance occurred during the wet season. In general, the longitudinal addition of species follows the addition of microhabitats. Sexually mature individuals were present throughout the year for the majority of the species, which suggests broad reproductive activity. However, given that most juveniles specimens were collected during the wet season, it is hypothesized that reproduction and survival rates must be higher during this season due to higher availability of critical resources, most probably food and shelter. ResumoEste estudo foi conduzido em três trechos -superior, médio e inferior -de um riacho de primeira ordem no Parque Estadual Morro do Diabo, sudeste do Brasil. Observações subaquáticas a partir de mergulho livre e coletas foram realizadas na estação seca (junho e setembro de 2000) e chuvosa (dezembro de 2000 e março de 2001). Das 16 espécies documentadas, 11 foram residentes ao longo das observações. Phalloceros caudimaculatus, Hypostomus nigromaculatus, Hisonotus francirochai, Trichomycterus diabolus e Hypostomus ancistroides representaram 90% do total de indivíduos amostrados. A maior riqueza e abundância ocorreram durante a estação chuvosa. Em geral, a adição longitudinal de espécies seguiu a adição de micro-hábitats. Indivíduos sexualmente maduros foram encontrados ao longo do ano para a maioria das espécies, o que sugere prolongada atividade reprodutiva. Contudo, visto que a maioria dos jovens foi coletada na estação chuvosa, é provável que neste período ocorra um incremento de atividade reprodutiva, em razão de maior disponibilidade de recursos críticos, principalmente abrigos e alimentos. Palavras-chave:

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“…The syntopic species of Hyphessobrycon clearly segregate from each other in the water column in Cabiúnas Lagoon. Similar patterns of vertical segregation have been observed for other congeneric fish species (Mendelson, 1975;Surat et al, 1982;Moyle & Senanayake, 1984, Aranha et al, 1993.…”

supporting

confidence: 82%

Vertical segregation of two species of Hyphessobrycon(Characiformes: Characidae) in the Cabiúnas coastal lagoon, southeastern Brazil

et al. 2008

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Segregation in the use of the water column by two congeneric species of Characidae, Hyphessobrycon bifasciatus and H. luetkenii, was investigated through underwater observations in the Cabiúnas coastal lagoon in northeastern Rio de Janeiro, Brazil. The use of the water column by the two species differed significantly. Hyphessobrycon luetkenii occupied mainly the uppermost stratum, with 79% of the observations within 20 cm of the surface; whereas H. bifasciatus was more common between 20 cm and 40 cm below the surface (55% of the observations). Predation pressure, macrophyte cover and nutrient distribution may influence this vertical segregation.A segregação na coluna d'água por duas espécies congenéricas de caracídeos, Hyphessobrycon bifasciatus e H. luetkenii, foi investigada através de observações subaquáticas na lagoa costeira Cabiúnas, nordeste do Rio de Janeiro. O padrão do uso da coluna d'água diferiu significativamente. Hyphessobrycon luetkenii ocupou principalmente o estrato superior, com 79% das observações até 20 cm da superfície, enquanto H. bifasciatus foi mais comum entre 20 e 40 cm abaixo da superfície (55% das observações). Pressão de predação e distribuição das macrófitas e dos nutrientes são fatores que poderiam influenciar a segregação vertical entre as espécies de Hyphessobrycon.

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Ocupação espacial, alimentação e época reprodutiva de duas espécies de Corydoras Lacépède (Siluroidei, Callichthyidae) coexistentes no rio Alambari (Botucatu, São Paulo)

Cited by 30 publications

References 19 publications

Population structure of two Astyanax Baird & Girard, 1854 (Teleostei, Characidae) species from upper Paraguaçu river

Population structure of two Astyanax Baird & Girard, 1854 (Teleostei, Characidae) species from upper Paraguaçu river

Fish assemblage structure in a first order stream, southeastern Brazil: longitudinal distribution, seasonality, and microhabitat diversity

Vertical segregation of two species of Hyphessobrycon(Characiformes: Characidae) in the Cabiúnas coastal lagoon, southeastern Brazil

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