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Area of Science:

  • Behavioral Ecology
  • Animal Behavior
  • Comparative Psychology

Background:

  • Animal personality refers to repeatable individual differences in behavior across contexts.
  • Personality is linked to life-history, energetic traits, and fitness, influencing behavioral evolution.
  • Research on animal personality has explored various taxa, but bats remain understudied.

Purpose of the Study:

  • To quantify personality in little brown bats (Myotis lucifugus) using a novel environment test.
  • To assess the short-term repeatability of bat behaviors.
  • To test if development influences personality traits, specifically activity levels in young-of-the-year (YOY) bats.

Main Methods:

  • A novel environment test was employed to quantify personality in little brown bats.
  • Behavioral data were collected to assess repeatability over a 24-hour period.
  • Young-of-the-year (YOY) bats of different ages (pre-weaning vs. post-weaning/pre-hibernation) were compared.

Main Results:

  • Personality dimensions consistent with other taxa were identified in little brown bats.
  • These personality traits demonstrated repeatability over a 24-hour period.
  • Older YOY bats exhibited higher activity scores than younger YOY bats, supporting the hypothesis that development influences personality.

Conclusions:

  • Little brown bats exhibit repeatable personality traits over short timescales.
  • Personality traits in YOY bats are influenced by age and developmental stage.
  • These findings suggest potential temporal flexibility in bat personality traits related to development.