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1 June 2016 Tonic Immobility in Newly Emerged Sea Turtle Hatchlings
Mohd Uzair Rusli, Nicholas C. Wu, David T. Booth
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The ability for animals to become temporarily immobile via external stimulus is known as tonic immobility (TI) and has been widely described among different taxa. However, TI is poorly documented in turtles. We demonstrate TI in newly emerged green turtle (Chelonia mydas) hatchlings in relation to potential practical applications and discuss the methodology of how to induce TI. On average, combining all clutches sampled, TI induced green turtle hatchlings to remain immobile for 25 ± 12 sec; thus, we argue that in this state of immobility, researchers and conservationist can safely obtain quantitative variables (e.g., animals' weight and morphological measurements without forceful stressing or harming the animal).

© 2016 Chelonian Research Foundation
Mohd Uzair Rusli, Nicholas C. Wu, and David T. Booth "Tonic Immobility in Newly Emerged Sea Turtle Hatchlings," Chelonian Conservation and Biology 15(1), 143-147, (1 June 2016).
Received: 31 August 2015; Accepted: 1 December 2015; Published: 1 June 2016
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