Sublethal effects of methylmercury on fecal metabolites of testosterone, estradiol, and corticosterone in captive juvenile white ibises (Eudocimus albus).

Effects of Chronic and Low Methylmercury Exposure in Juvenile White Ibises (eudocimus Albus)

Endocrine disruption in white ibises (Eudocimus albus) caused by exposure to environmentally relevant levels of methylmercury.

Methylmercury is a globally distributed pollutant and upper trophic level aquatic fauna are at particularly high risk of exposure. Although methylmercury is known to have a number of neurological and developmental effects, relatively little is known about effects on endocrine disruption and reproduction in aquatic fauna, particularly in response to chronic exposure at low concentrations. We exp...

Relationships among Mercury Concentrations, Hormones, and Nesting Effort of White Ibises (eudocimus Albus) in the Florida Everglades

tions through acute toxicity or through physiological eff ects that modify behavior and negatively infl uence reproductive success. We compared body-feather mercury concentrations of free-living male and female adult White Ibises (Eudocimus albus) during three breeding seasons in the Florida Everglades and examined the relationships among mercury, hormone concentrations, and body-condition scor...

Survival of White Ibises (Eudocimus albus) in response to chronic experimental methylmercury exposure.

Although methylated mercury (MeHg) is known to have neurological, immunological, reproductive, and endocrine effects on vertebrates at low environmental exposure levels, effects on survival of exposed birds have not been demonstrated in the wild. Here, we report on survival of the same group of White Ibises (Eudocimus albus) during exposure to 4 levels of dietary MeHg in captivity and later as ...

Effects of methylmercury and spatial complexity on foraging behavior and foraging efficiency in juvenile white ibises (Eudocimus albus).

Methylmercury is a globally distributed neurotoxin, endocrine disruptor, and teratogen, the effects of which on wildlife at environmentally relevant levels are largely unknown. In birds, foraging efficiency and learning may be sensitive endpoints for sublethal methylmercury toxicity, and these endpoints also may be biologically relevant at the population level. In the present study, groups of w...