Taste Responsiveness of Spider Monkeys to Dietary Ethanol

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Dausch Ibanez, DanielLinköpings universitet,Biologi,Tekniska fakulteten (author)

Taste Responsiveness of Spider Monkeys to Dietary Ethanol

Article/chapterEnglish2019

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2019-08-11
OXFORD UNIV PRESS,2019
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LIBRIS-ID:oai:DiVA.org:liu-163484
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-163484URI
https://doi.org/10.1093/chemse/bjz049DOI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

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Recent studies suggest that frugivorous primates might display a preference for the ethanol produced by microbia in overripe, fermenting fruit as an additional source of calories. We, therefore, assessed the taste responsiveness of 8 spider monkeys (Ateles geoffroyi) to the range of ethanol concentrations found in overripe, fermenting fruit (0.05-3.0%) and determined taste preference thresholds as well as relative taste preferences for ethanol presented in sucrose solutions and in fruit matrices, respectively. Using a 2-bottle preference test of short duration (1 min), we found that spider monkeys are able to detect ethanol concentrations as low as 0.5%, that they prefer ethanol concentrations up to 3% over water, and that they prefer sucrose solutions and pureed fruit spiked with ethanol over equimolar sucrose solutions and pureed fruit without ethanol. However, when presented with an ethanol-spiked sucrose solution and a higher-concentrated sucrose solution without ethanol, the animals clearly preferred the latter, even when the sucrose-ethanol mixture contained 3 times more calories. These results demonstrate that spider monkeys are more sensitive to the taste of ethanol than rats and humans and that they prefer ecologically relevant suprathreshold concentrations of ethanol over water. Tests with sucrose solutions and pureed fruits that were either spiked with ethanol or not suggest that sweetness may be more important for the preferences displayed by the spider monkeys than the calories provided by ethanol. The present results, therefore, do not support the notion that dietary ethanol might be used by frugivorous primates as a supplemental source of calories.

Subject headings and genre

NATURVETENSKAP Kemi Analytisk kemi hsv//swe
NATURAL SCIENCES Chemical Sciences Analytical Chemistry hsv//eng
Ateles geoffroyi; dietary ethanol; relative taste preference; spider monkeys; taste preference threshold

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Hernandez Salazar, Laura TeresaUniv Veracruzana, Mexico (author)
Laska, MatthiasLinköpings universitet,Biologi,Tekniska fakulteten(Swepub:liu)matla69 (author)
Linköpings universitetBiologi (creator_code:org_t)

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In:Chemical Senses: OXFORD UNIV PRESS44:8, s. 631-6380379-864X1464-3553

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