Direct links between resource availability and activity budget better reveal ecological patterns of endangered Coimbra-Filho's titi monkey.

Autor: Souza-Alves JP; Programa de Pós-graduação em Ciências Biológicas, Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil. souzaalves1982@gmail.com.; Programa de Pós-graduação em Biologia Animal, Centro de Biociências, Departamento de Zoologia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil. souzaalves1982@gmail.com.; Centro de Biociências, Departamento de Zoologia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil. souzaalves1982@gmail.com.; Laboratório de Ecologia, Centro de Biociências, Comportamento e Conservação (LECC), Universidade Federal de Pernambuco, Recife, Brazil. souzaalves1982@gmail.com., Hilário RR; Departamento de Meio Ambiente e Desenvolvimento, Universidade Federal de Amapá, Macapá, Brazil., Fontes IP; Secretaria Municipal de Meio Ambiente, Aracaju, Sergipe, Brazil., Thomas WW; The New York Botanical Garden, Bronx, NY, USA., de Vasconcellos Barbosa MR; Programa de Pós-graduação em Ciências Biológicas, Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil.
Jazyk: angličtina
Zdroj: Primates; journal of primatology [Primates] 2024 Jan; Vol. 65 (1), pp. 49-59. Date of Electronic Publication: 2023 Oct 08.
DOI: 10.1007/s10329-023-01095-4
Abstrakt: 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.
(© 2023. The Author(s), under exclusive licence to Japan Monkey Centre.)
Databáze: MEDLINE
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