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| Registros recuperados: 72 | |
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| Bowen, S.H.. |
| Parmi les quelques 2500 poissons d'eau douce africains, 160 seulement se nourrissent de plantes et de détritus. La plupart appartiennent à 5 genres : #Labeo, Tilapia, Sarotherodon, Citharinus$ et #Distichodus$. Bien que peu nombreuses, ces espèces ont une vaste répartition et constituent une part proportionnellement importante de la biomasse de beaucoup de peuplements ichtyologiques. Ce chapitre fait le point des connaissances permettant d'expliquer pourquoi si peu de poissons se nourrissent de plantes et de détritus et pourquoi ceux qui le font ont une telle réusssite |
| Tipo: Text |
Palavras-chave: POISSON D'EAU DOUCE; NUTRITION ANIMALE; HERBIVORE; DETRITIVORE. |
| Ano: 1988 |
URL: http://www.documentation.ird.fr/hor/fdi:26398 |
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| Boujard, T.; Moreau, Yann; Luquet, Pierre. |
| Low intensity colored light is very often used to observe or manipulate fish during the scotophase. According to data on fish vision, most species can perceive these wavelengths of light since their cone pigments have maximum absorption peaks around 455, 530 and 625 nm. To test whether #Hoplosternum littorale$ can detect low intensity red or blue light, we attempted to entrain feeding activity, known to be nocturnal and synchronized by the circadian light/dark alternation, to such light. Feeding activity was entrained with either red or blue light, indicating that these fish can perceive these lights. In all cases, the fish fed during the darker phase of the light cycle. (Résumé d'auteur) |
| Tipo: Text |
Palavras-chave: POISSON D'EAU DOUCE; ETHOLOGIE; NUTRITION ANIMALE; EXPERIMENTATION; RYTHME BIOLOGIQUE; VARIATION TEMPORELLE; INTENSITE LUMINEUSE; RELATION ESPECE ENVIRONNEMENT. |
| Ano: 1992 |
URL: http://www.documentation.ird.fr/hor/fdi:40468 |
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| Moreau, Yann; Médale, F.; Boujard, T.; Luquet, Pierre. |
| Metabolic utilization of energy substrates by a tropical catfish species, #Hoplosternum littorale$, was investigated. Both endogenous and exogenous substrates were considered, either through analysis of whole body losses during long term starvation, or through indirect calorimetric measurements. Results show that utilization of fats, during long term starvation, was not related to their body concentration. Even if most of the energy is provided by proteins, as for temperate species, carbohydrates could be used as far as they remain available. Therefore, carbohydrates metabolism seems to be active in "Atipa". (Résumé d'auteur) |
| Tipo: Text |
Palavras-chave: POISSON; ESPECE TROPICALE; ETHOLOGIE; METABOLISME; BILAN ENERGETIQUE; NUTRITION ANIMALE; METHODOLOGIE; ANALYSE QUANTITATIVE; ANALYSE CALORIMETRIQUE; ATIPA. |
| Ano: 1993 |
URL: http://www.documentation.ird.fr/hor/fdi:40789 |
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| Registros recuperados: 72 | |
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