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Tissue Collection of Bats for -Omics Analyses and Primary Cell Culture
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Echolocation by young bats on their initial and subsequent flights

E Gould, B Cooley, P Barnick

    Developmental Psychobiology
    |January 1, 1981
    PubMed
    Summary

    Young bats adjust their echolocation pulse rate when nearing obstacles, a skill present even on their first flights. This developmental change in vocal behavior aids navigation from an early age.

    Area of Science:

    • Animal Behavior
    • Bioacoustics
    • Developmental Neuroscience

    Background:

    • Bats use echolocation for navigation and obstacle avoidance.
    • Understanding developmental changes in echolocation is crucial for comprehending bat navigation.
    • Previous research has focused on adult bat echolocation patterns.

    Purpose of the Study:

    • To document developmental changes in bat vocal reactions to obstacles.
    • To describe the pulse patterns of young bats during their initial flights.
    • To compare the echolocation behavior of young bats with that of older bats.

    Main Methods:

    • Observing and recording the vocalizations of young bats (25-29 days old) during their first flights.
    • Analyzing pulse repetition rates in response to approaching obstacles.

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  • Comparing developmental patterns with those of adult bats.

    • Main Results:

    • Young bats exhibited an increased pulse repetition rate before encountering obstacles, a pattern distinct from adult bats.
    • The distance at which this change occurred was approximately twice as far from the obstacle in adults compared to young bats.
    • Even on their first flights, young bats demonstrated obstacle avoidance capabilities exceeding chance levels.
    • This navigational ability appears robust against environmental changes during the preweaning phase.

    Conclusions:

    • Bats develop sophisticated obstacle avoidance mechanisms early in life.
    • Developmental changes in echolocation pulse patterns facilitate navigation in young bats.
    • The early emergence of this capability suggests a strong innate component to bat navigation.