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Related Experiment Video

Updated: Jun 16, 2026

Flypub To Study Ethanol Induced Behavioral Disinhibition and Sensitization
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Ethanol ingestion affects flight performance and echolocation in Egyptian fruit bats.

Francisco Sánchez1, Mariana Melcón, Carmi Korine

  • 1Mitrani Department of Desert Ecology, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, 84990 Midreshet Ben-Gurion, Israel. fasbos@gmail.com

Behavioural Processes
|February 16, 2010
PubMed
Summary

Ethanol in ripe fruits can be toxic to Egyptian fruit bats (Rousettus aegyptiacus). Ingesting ethanol impairs their flight speed and echolocation abilities, impacting foraging behavior.

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Area of Science:

  • Zoology
  • Animal Physiology
  • Behavioral Ecology

Background:

  • Ethanol is present in fleshy fruits, increasing as fruits ripen.
  • Ethanol content exceeding 1% reduces the perceived food value for Egyptian fruit bats.
  • This suggests potential toxicity and impairment of essential functions.

Purpose of the Study:

  • To test the hypothesis that food with >1% ethanol is toxic to Egyptian fruit bats.
  • To investigate the effects of ethanol ingestion on bat flight and echolocation skills.

Main Methods:

  • Egyptian fruit bats were flown in an indoor corridor after consuming ethanol-rich and ethanol-free food.
  • Flight performance (speed) and echolocation calls/behavior were measured and compared.

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Last Updated: Jun 16, 2026

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A Simple Way to Measure Ethanol Sensitivity in Flies
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A Simple Way to Measure Ethanol Sensitivity in Flies

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Main Results:

  • Bats fed ethanol-rich food flew significantly slower than those fed ethanol-free food.
  • Ethanol ingestion significantly altered multiple variables of echolocation calls and bat behavior.

Conclusions:

  • Ethanol is toxic to Egyptian fruit bats, negatively affecting their foraging.
  • Ethanol impairs physiological functions critical for competent flight and echolocation in these bats.