A simple method to predict body temperature of small reptiles from environmental temperature

Area of Science:

• Ecology
• Physiology
• Biophysics

Background:

• Behavioral thermoregulation is crucial for ectotherms.
• Accurate prediction of organism body temperature requires microhabitat data.
• Existing methods for collecting microhabitat data are often expensive and sensor-intensive.

Purpose of the Study:

• To develop an inexpensive and accurate method for predicting small lizard body temperature.
• To compare the effectiveness of DS18B20 sensors, iButtons, and copper models for thermal prediction.
• To demonstrate parameterization of the heat transfer equation for body temperature prediction.

Main Methods:

• Comparison of DS18B20 sensors, iButtons, and copper models in laboratory and natural settings.
• Application of a parameterized heat transfer equation.
• Utilizing inexpensive sensors and loggers for extensive habitat temperature sampling.

Main Results:

• DS18B20 sensors provided an inexpensive yet accurate method for body temperature prediction.
• The chosen method showed minimal deficit in precision or accuracy compared to other techniques.
• Parameterization of the heat transfer equation allows prediction from historical data.

Conclusions:

• The DS18B20 sensor method offers a cost-effective solution for high-resolution thermal data collection.
• Increased sample resolution from inexpensive sensors offsets any minor loss in accuracy.
• Understanding microhabitat thermal heterogeneity is key for small ectotherm thermoregulation.