Stabenau and Vietti: The physiological effects of multiple forced submergences of Caretta caretta 899 



nets would not significantly affect their survival potential, 

 provided that the turtles have a recovery interval between 

 successive submergences. However, it should be noted that 

 the latter statement is based on comparable-size turtles 

 that may be submerged in shrimp nets equipped with 

 legally certified and installed turtle excluder devices. Poor 

 installation or lack of use of legal TEDs would result in aug- 

 menting the acid-base imbalance in the turtles. Increasing 

 the magnitude of the blood acid-base and ionic disturbance 

 during each submersion would increase the length of time 

 necessary to achieve partial or complete recovery. 



Acknowledgments 



Grateful appreciation is expressed to personnel from the 

 National Marine Fisheries Service Galveston and Pasca- 

 goula Laboratories for their assistance in turtle husbandry 

 and in conducting the submersion protocol under labora- 

 tory and very difficult field conditions. These studies were 

 conducted under appropriate threatened and endangered 

 species permits issued by the U.S. Fish and Wildlife Ser- 

 vice, Texas Park and Wildlife Department, and the Florida 

 Department of Natural Resources. 



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