Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Direct links between resource availability and activity budget better reveal ecological patterns of endangered Coimbra-Filho’s titi monkey
Ist Teil von
Primates, 2024, Vol.65 (1), p.49-59
Ort / Verlag
Singapore: Springer Nature Singapore
Erscheinungsjahr
2024
Quelle
MEDLINE
Beschreibungen/Notizen
Many primatological studies do not assess direct indexes of food availability to make inferences about behavioral strategies. We related the diet and behavior of a group of
Callicebus coimbrai
in northeastern Brazil to fruit availability indexes and compared this pattern between seasons (direct and indirect assessment of food availability) to assess whether direct and indirect approaches detect similar ecological patterns. We monitored the study group for 33 months (5 days/month) via scan sampling. The monthly availability of fruits and new leaves was recorded in phenological transects. Fruit availability varied across years based on fruit prevalence, and timing and duration of the abundant seasons. We did not find evidence of a time-minimizing strategy, since
C. coimbrai
did not change its activity levels according to food availability. However, the negative relationship between foraging and fruit availability indicates that
C. coimbrai
can compensate for the lower fruit availability by increasing the search for alternative food sources. Monthly fruit consumption was positively correlated to fruit availability and negatively related to the consumption of other food items. However, the behavioral and feeding profiles did not vary between seasons and were not related to rainfall levels. Primate studies should directly relate behavioral and feeding profiles to fruit availability indices, thus avoiding using seasons as proxies of food availability.