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Many studies have be done on mercury in the environment. The studies though have focused on sport fish and migratory waterfowl. North American Bullfrog (Rana catesbeiana) has been one species neglected from studies. One study has shown that bullfrogs due accumulate significant amounts of mercury (Gerstenberger S., and Pearson R. 2002). Though, no study has been done to find out if hind limbs have more concentrations that front limbs. Also to see if there is a difference between skin-off and skin-on, to find out if skin accumulates mercury. This study found that there was no significant difference between front and hind limbs at low levels. From this study, skin-off to skin-on had no significant difference in mercury concentrations. Females have been found, in this study, to have significantly less mercury concentrations than males. These finding show that front limbs can be used to predict hind limb mercury concentrations.
Connell, Jarrod, "Mercury concentrations in the muscles of the North American Bullfrogs (Rana catesbeiana)" (2006). UNLV Theses, Dissertations, Professional Papers, and Capstones. 379.