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Seasonal versatility in the feeding ecology of a group of titis (Callicebus coimbrai) in the northern Brazilian Atlantic Forest

Authors

  • João Pedro Souza-Alves,

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    1. Postgraduate Program in Development and Environment, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil
    • Department of Systematics and Ecology, Programa de Pós-graduação em Ciências Biológicas (Zoologia), Universidade Federal da Paraíba, Cidade Universitária, 58059-900, João Pessoa, Paraíba, Brazil
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  • Isadora P. Fontes,

    1. Postgraduate Program in Development and Environment, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil
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  • Renata R.D. Chagas,

    1. Postgraduate Program in Development and Environment, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil
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  • Stephen F. Ferrari

    1. Department of Biology, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil
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Abstract

The feeding behavior of a group of titis (Callicebus coimbrai) was monitored over an annual cycle at a site in northeastern Brazil. Behavioral data were collected in scan samples (1-min scan at 5-min intervals), and complementary data on fruit availability and new leaf cover were collected. Feeding time accounted for 28.9% of daily activity. Fruit was the principal item of the diet (61.2% of records) and the primary category in all months except September, when it was surpassed by leaves. Young leaves were the second most important category (20.0%). The consumption of seeds and insects was prominent in November and December. Fifty-two plant species were exploited, and the Elaeocarpaceae, Myrtaceae, Sapotaceae, and Passifloraceae provided the vast majority (86.0%) of plant feeding records. The phenological record did not provide a good measure of fruit availability, but a strong correlation (rs=0.902, P<0.0001, n=12) was found between the consumption of leaves and the exploitation of lianas each month. Lianas accounted for 28.2% of plant feeding records, and predominated between August and December. This suggests that lianas may represent a key factor in the ability of the species to tolerate the intense habitat fragmentation found throughout its geographic range. Am. J. Primatol. 73:1199–1209, 2011. © 2011 Wiley Periodicals, Inc.

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