Thursday, March 30, 2023

Nocturnal basking in a freshwater turtle from Trinidad

Scorpion mud turtle (Kinosternon scorpioides). Photo by Renoir Auguste. ||| A recent study was published and it assessed nocturnal basking in freshwater turtles from across the world, including surveys from Trinidad and Tobago. An incidental observation of nocturnal basking was recorded with the scorpion mud turtle in an urban area in southern Trinidad which was included in the global assessment. Further, surveys using wildlife cameras took place at Point-a-Pierre Wildfowl Trust to further evaluate whether turtles were basking at night, or only during the day. The only species caught on cameras were the non-native red-eared sliders (Trachemys scripta elegans; native to the United States), and they were only recorded basking during the day. Interestingly, globally, only tropical (but not temperate) species were observed basking at night, suggesting that environmental temperature plays a key role in this behaviour. It would be noteworthy if more observations of basking behaviour are recorded for the other freshwater turtle species in Trinidad. I encourage local herpers and herpetologists to keep an eye on the freshwater turtles near them, so we can use the information to better protect them! ||| Link to early view of study here.

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