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Registros recuperados: 31 | |
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Moreira, L.C.; Odinetz Collart, Olga. |
Prawn larvae of #Macrobrachium amazonicum$ have been collected during six diel cycles in the epilimnion (surface and 2 m) from three different habitats of the Lagos do Rei, Careiro Island. The larval distribution showed a significant increase in density at 22 hours regardless of season or habitat, which suggests a diel vertical migration pattern. The thermal stratification of the lake (mean differential of 0.5° between the surface and 2 m and 0.6° between 2 m and 4 m) suggests that this phenomena could be only partly related to a metabolic efficiency resulting from prawns residing at cooler depths during the day. In shallow tropical waters, predation by visually dependant planktivores can be a more important factor in the adaptative significance of the... |
Tipo: Text |
Palavras-chave: MILIEU LACUSTRE; PLAINE INONDABLE; CREVETTE; LARVE; DISTRIBUTION SPATIALE; MIGRATION VERTICALE; RYTHME NYCTHEMERAL. |
Ano: 1993 |
URL: http://www.documentation.ird.fr/hor/fdi:40802 |
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Registros recuperados: 31 | |
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