Evaluation of Optimal Flatbed Heating Temperature for Uromastyx aegyptia in Tropical Captivity

Abstract

Uromastyx aegyptia, a desert-dwelling reptile, requires stable basking temperatures between 50 °C and 55 °C for effective thermoregulation, yet maintaining such conditions in Malaysia’s high-humidity tropical climate presents a significant challenge. This study evaluates the optimal setup temperature for a heated flatbed system designed to replicate desert substrate conditions. The plate was tested at 80 °C, 100 °C, and 120 °C. Thermal imaging and behavioral monitoring determined comfort based on basking posture, color change, and weekly body weight. Eight Dhabs, comprising four individuals in the control group and four in the hot flatbed group, were observed over a four-week period. At the 80 °C plate setting, the surface temperature stabilized between 52 °C and 55 °C, closely matching the species’ natural basking range. Lizards exhibited relaxed postures, lighter coloration, and weight gain which indicating effective thermoregulation. The system provides a potentially reliable and welfare-focused solution for heating under tropical captivity conditions.