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Measuring energetics and behaviour using accelerometry in cane toads Bufo marinus.

Lewis G Halsey1, Craig R White

  • 1School of Life Sciences, Roehampton University, London, United Kingdom. l.halsey@roehampton.ac.uk

Plos One
|April 28, 2010
PubMed
Summary
This summary is machine-generated.

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Researchers measured energy expenditure in cane toads using accelerometers, a novel method for amphibians. This study provides crucial data for predicting invasive species spread and improving control strategies for cane toads (Bufo marinus).

Area of Science:

  • Ecology
  • Invasive Species Biology
  • Animal Energetics

Background:

  • Cane toads (Bufo marinus) are invasive in Australia, causing habitat damage.
  • Predictive models for cane toad expansion require accurate energy expenditure data, which is currently lacking for amphibians in the wild.

Purpose of the Study:

  • To utilize accelerometry to estimate field energy expenditure in free-ranging cane toads.
  • To establish a method for quantifying amphibian energetics and behavior using accelerometers.

Main Methods:

  • Laboratory calibration of accelerometers to measure overall dynamic body acceleration (ODBA) against metabolic rate.
  • Deployment of accelerometers on free-ranging cane toads to record behavioral time budgets and derive energetics.
  • Development of a predictive equation relating ODBA to metabolic rate (R² = 0.74).

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Main Results:

  • The study successfully quantified behavior and energy expenditure in cane toads using accelerometry.
  • Field data on locomotion time budgets aligned with previous studies.
  • Results suggest wild cane toad metabolic rates may be higher than previously assumed for amphibians.

Conclusions:

  • Accelerometry provides a viable method for estimating amphibian energetics in the field.
  • Understanding cane toad energy expenditure is vital for refining predictive models of their invasion.
  • This research offers new insights into the ecological impact and management of invasive cane toads.