Biofluorescence of the Crocodile Skinks, genus Tribolonotus: first report in Scincidae

Biofluorescence, the phenomenon where organisms absorb short wavelengths of light and re-emit longer wavelengths, has been documented in various reptile and amphibian groups. This study reports the first observation of UV-induced biofluorescence in the genus Tribolonotus (crocodile skinks), marking the first such report for the family Scincidae. Specimens of Tribolonotus novaeguineae, T. brongersmai, and T. gracilis were examined under UV light, revealing distinct fluorescence patterns. The fluorescence is primarily bone-induced, linked to the presence of osteoderms, although some skin-based fluorescence was also observed, particularly around the eyes. The study suggests potential ecological roles for this fluorescence, such as intraspecific signaling or predator-prey interactions, and highlights the need for further research to understand the functional significance of biofluorescence in these skinks.

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