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Tishomingo NFH Conducts Climate Change Study
Southwest Region, November 15, 2010
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A banded darter (Etheostoma zonale) acclimates to its aquarium environment before the study.
A banded darter (Etheostoma zonale) acclimates to its aquarium environment before the study. - Photo Credit: USFWS - Ralph Simmons
Native fatmucket mussels (Lampsilis siliquoidea) were numerically tagged from largest to smallest then split into an odd and an even group before the study.
Native fatmucket mussels (Lampsilis siliquoidea) were numerically tagged from largest to smallest then split into an odd and an even group before the study. - Photo Credit: USFWS - Ralph Simmons

Tishomingo NFH and the Tulsa ES office conducted a study this fall to identify the thermal tolerance of banded darters and fatmucket mussels using two separate environmental chambers for control and experimental groups. Darters and mussels were acclimated to 20°C in the control group and 24°C in the experimental group followed by a temperature increase of 1°C per day. Water quality and animal behavior were observed and recorded daily. The final results will be determined once the study has been replicated. This study should provide data to depict the thermal tolerance of these two aquatic species and their ability to withstand possible increasing temperatures associated with climate change.


Contact Info: Ralph Simmons, 580-384-5463, ralph_simmons@fws.gov



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