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Consequences Of Environmental Mercury Exposure For Migratory Fitness And Survival Of Passerine Birds, Yanju Ma
Consequences Of Environmental Mercury Exposure For Migratory Fitness And Survival Of Passerine Birds, Yanju Ma
Electronic Thesis and Dissertation Repository
Mercury (Hg) is a global contaminant that persists in the environment. The organic form, methylmercury (MeHg) has been shown to adversely affect bird immune function, foraging behavior, navigation, and flight ability. Many songbirds migrate seasonally, a process that consists of multiple endurance flights and refueling at stopovers. Current knowledge of the effects of MeHg on songbird migration and survival is mostly speculative. In this thesis, I present three studies of MeHg in migratory songbirds. In Chapter 2, I assessed the breeding ground MeHg exposure (inferred from feather Hg) of 15 songbird species captured during fall migration at bird banding stations …