NDLI: Factors affecting the drinking behavior of black howler monkeys (Alouatta pigra)

Content Provider	Springer Nature Link
Author	Dias, Pedro Américo D. Rangel Negrín, Ariadna Coyohua Fuentes, Alejandro Canales Espisa, Domingo
Copyright Year	2013
Abstract	Water is essential for animals, and is particularly critical for thermoregulation. Animals obtain water from three main sources, free water, water contained in food, and water produced in the body during metabolism. Howler monkeys (Alouatta spp.) spend a small proportion of their time drinking water and some populations have not been observed drinking, suggesting they obtain most of their water requirements in food or by metabolism. However, when howler monkeys have been observed drinking there is evidence suggesting the drinking is associated with low precipitation, temperature, and fruit consumption, and high mature leaf consumption, although it remains unclear which factors determine drinking by this genus. In this study we tested the hypothesis that drinking by howler monkeys results from increased hydration requirements in drier climates and from lower consumption of foods rich in water (e.g., new leaves, fruit). We tested this hypothesis by comparative analysis of 14 groups of Yucatán black howler monkeys (A. pigra) living under different climatic conditions. From April 2005 to November 2008 we collected a total of 3,747.2 focal observation hours of the feeding and drinking behavior of 60 individuals, with data on ambient temperature and rainfall. Individuals spent more time drinking when they lived in habitats with higher maximum temperature and when they consumed more mature leaves. For this species, therefore, drinking seems to be linked to heat stress and a low availability of water in ingested food.
Starting Page	1
Ending Page	5
Page Count	5
File Format	PDF
ISSN	00328332
Journal	Primates
Volume Number	55
Issue Number	1
e-ISSN	16107365
Language	English
Publisher	Springer Japan
Publisher Date	2013-09-21
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ambient temperature Diet Howler monkeys Mexico Water balance Zoology Animal Ecology Behavioural Sciences Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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