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• W2034962298 abstract "Primates often make foraging selections that are not apparent. For example, they may eagerly consume a particular plant part and species in some instances, but reject it at other times. Blighia unijugata (Baker) fruit is one of the most frequently eaten foods of mangabeys (Lophocebus albigena) in Lwamunda Forest Reserve, Uganda; however, its use varies strikingly depending on the fruit's developmental stage. We conducted feeding observations to investigate the nutritional criteria that mangabeys may have used for the consumption of specific fruit parts by conducting analysis of fruit parts eaten and rejected at different developmental stages. When seeds had low condensed tannins, mangabeys ate them, but seeds were rejected when tannin levels increased. In the first five stages of fruit development, tannin levels in arils declined and the frequency of consumption of the aril increased. Although fat content in seeds increased with maturity, it did not appear to influence seed consumption, but fat content was related to frequency of consumption of the aril. Considering that primates are often making food selections among many species/part combinations, our results illustrate the value of using nutritional analyses to understand foraging decisions. Furthermore, they demonstrate how very specific trade-offs between consumption of critical nutrients and antifeedants can drive which foods and parts are eaten. Les primates font souvent des choix alimentaires qui ne sont pas apparents. Par exemple, ils peuvent consommer avidement une partie particulière d'une plante à un certain moment et la rejeter à d'autres. Le fruit de Blighia unijugata (Baker) est un des aliments le plus souvent consommés par les mangabeys (Lophocebus albigena) dans la Réserve forestière de Lwamunda, en Ouganda. Cependant, sa consommation varie fortement selon le stade de développement des fruits. Nous avons observé les mangabeys en train de manger pour chercher les critères nutritionnels que ces singes pourraient utiliser pour l'ingestion de parties spécifiques des fruits en réalisant une analyse des parties de fruits consommées et rejetées à différents stades de développement. Lorsque les graines avaient une faible concentration en tanins, les mangabeys les mangeaient, mais ils les rejetaient lorsque le taux de tanins augmentait. Au cours des cinq premiers stades de développement des fruits, le taux de tanins dans les sarcotests diminuait et la fréquence de leur consommation augmentait, mais le contenu en graisse était lié à la fréquence de la consommation de sarcotests. Vu que les primates sélectionnent souvent leur nourriture parmi de nombreuses combinaisons d'espèces et de parties de fruits, nos résultats montrent qu'il est important de faire des analyses nutritionnelles pour bien comprendre les décisions en matière d'alimentation. De plus, ils illustrent comment des compromis très spécifiques entre consommation de nutriments critiques et éléments anti-appétence peuvent déterminer quelles nourritures et quelles parties sont consommées." @default.
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• W2034962298 date "2014-09-02" @default.
• W2034962298 modified "2023-10-16" @default.
• W2034962298 title "The challenge of interpreting primate diets: mangabey foraging on<i>Blighia unijugata</i>fruit in relation to changing nutrient content" @default.
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• W2034962298 doi "https://doi.org/10.1111/aje.12174" @default.
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