Measures of food intake in mantled howling monkeys

Primates; Journal of Primatology
José Eduardo Reynoso-CruzPedro Américo D Dias

Abstract

Food intake (i.e., the amount of food consumed by an individual) is a crucial measure for studying feeding behavior, but its measurement requires high visibility of individuals and long recording sessions, which are often difficult to accomplish under field conditions. As a consequence, studies on the feeding behavior of primates typically do not estimate food intake directly, and focus rather on studying dietary patterns through indirect measures of food intake, such as time spent feeding, number of food bites and food intake rates. The aim of the present study was to determine the validity of these estimators of food intake in mantled howling monkeys (Alouatta palliata) by comparing the estimations with the direct measurement of food intake. We recorded 97 feeding episodes of two male and two female adults, during which we determined the number of ingested food units (i.e., number of leaves and number of fruits), the number of bites taken and time spent feeding. After weighing units of food similar to those consumed, we calculated food intake and mean intake rates per food type (ripe fruits, unripe fruits, mature leaves, and young leaves). The number of bites taken by mantled howling monkeys during feeding episodes was strong...Continue Reading

References

Nov 29, 1991·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·O T Oftedal
Jan 1, 1974·Behaviour·J Altmann
Jul 10, 1998·The Proceedings of the Nutrition Society·D J Chivers
Sep 13, 2006·American Journal of Primatology·Oliver SchülkeAndreas Koenig
Feb 12, 2009·Primates; Journal of Primatology·Naofumi Nakagawa
Apr 26, 2014·American Journal of Primatology·Katherine R Amato, Paul A Garber
May 21, 2014·American Journal of Primatology·Pedro Américo D DiasDomingo Canales-Espinosa

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Citations

Sep 19, 2018·American Journal of Physical Anthropology·Pedro Américo D DiasAriadna Rangel-Negrín
Sep 15, 2019·American Journal of Primatology·Janaína Paula Back, Júlio César Bicca-Marques
Jan 12, 2021·American Journal of Physical Anthropology·Ariadna Rangel NegrínPedro A D Dias
Apr 2, 2021·Primates; Journal of Primatology·Laura M BoltAmy L Schreier

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