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| Cunico,Almir Manoel; Agostinho,Angelo Antonio. |
| The aim of this study was to determine morphological patterns of the most abundant fish species found in reservoirs with different hydraulic retention times and stages of colonization, considering habitat strata and feeding strategies. Samplings were carried out in six Paraná State (Brazil) reservoirs, and morphological data were obtained from 15 individuals of 17 fish species. Ecomorphological attributes that best segregated species, were selected using Discriminant Analysis. These selected attributes were later used in a Principal Components Analysis (PCA). Differences among reservoirs concerning occupation of the ecomorphological space were tested through analysis of variance (null models). The six reservoirs differed in the occupation of the fish... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecomorphology; Feeding strategies; Habitat; Reservoir. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000100015 |
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| Vásquez Flores, Yasmit. |
| En México, el venado cola blanca (Odocoileus virginianus) es una de las principales especies cinegéticas. Este trabajo aporta información sobre la composición de la dieta del venado cola blanca mexicano para la región de la cañada, Oaxaca, México. La dieta de este ungulado se estimó usando análisis microhistológico de epidermis de plantas presentes en sus excretas. La recolecta de excretas y de plantas se realizó durante la época de seca y de lluvia del año 2011 a 2013. La dieta consistió de 83 especies vegetales de 36 familias botánicas; sin embargo, 10 especies representaron más del 50% de la dieta anual. Las especies más frecuentes en la dieta fueron Talinum paniculatum, Agave macrocantha, Euforbia sp., Karwinskia humboltiana, Zizipus pedumeulata, y... |
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Palavras-chave: Reserva de la Biósfera de Cuicatlán-Tehuacán; Hábitos alimenticios; Microhistología; Zona árida-tropical; Diversidad de la dieta; Tehuacan-Cuicatlan Biosphere Reserve; Feeding strategies; Microhistological; Dry forest; Diet diversity; Ganadería; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2300 |
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| Teresa,Fabrício Barreto; Carvalho,Fernando Rogério. |
| Following behaviour among Neotropical stream fishes have been scarcely reported. This type of feeding association was observed in a small stream in the upper rio Paraná system between the catfish, Aspidoras fuscoguttatus, acting as a nuclear species, and Knodus moenkhausii, Poecilia reticulata, and Astyanax altiparanae as follower species. Aspidoras fuscoguttatus individuals dug in the bottom during feeding, causing sediment suspension. Their followers picked food items in the "cloud" of suspended particles. Food items of sediment are no longer consumed by the catfish when in suspension, but are still available for K. moenkhausii, P. reticulata and A. altiparanae. Following behaviour is an alternative feeding tactic for these species, which reinforces the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspidoras fuscoguttatus; Feeding strategies; Interspecific interaction; Following behaviour; Southeastern Brazil. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000100013 |
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