Endocrine Disruption And Reproduction Articles & Analysis
7 articles found
Phthalic acid esters are frequently detected in aquatic environment. In this study, zebrafish were exposed to low concentrations (0, 0.46, 4.0, and 37.5 µg/L) of mono‐(2‐ethylhexyl) phthalate (MEHP) for 81 days, and the effects on reproduction, gamete quality, plasma vitellogenin (VTG), sex steroids, and transcriptional profiles of key genes involved in steroidogenesis were investigated. The ...
Bisphenol A acts as an endocrine disruptor, affects animal reproductive success in vivo, and affects sperm functions in vitro at environmentally relevant concentrations leading to reduction in sperm motility and fertilizing ability in fish. The effect of in vitro BPA on avian sperm functions has not been explored. We tested the effect of environmentally relevant concentrations of BPA (0, 0.18, ...
A modified tier 1 EDSP 21‐day fish short‐term reproduction assay (FSTRA) was used to evaluate the effects of sediment exposure from freshwater and brackish ponds in Bermuda on reproductive fecundity and endocrine function in fathead minnow (pimephales promelas) and killifish (fundulus heteroclitus). Reproductively‐active male and female fish were exposed to control sediment and sediment from ...
Exposure to certain environmental contaminants such as agricultural pesticides can alter normal endocrine and reproductive parameters in wild fish populations. Recent studies have found widespread pesticide contamination across the rivers that discharge into the Great Barrier Reef lagoon. Potential impacts on native fish species exposed to known ...
Our objective was to investigate the impact of Polybrominated diphenyl ethers (PBDEs) on fish reproduction over two generations. Zebrafish (Danio rerio) embryos (F0) were exposed to low concentrations (3, 10, 30 μg/L) of the PBDE mixture DE‐71 until they were sexually mature, and steroid hormone production, expression of genes involved in steroidogenesis, gonadal development and gamete ...
The endocrine responses in male Murray rainbowfish (Melanotaenia fluviatilis) have been evaluated after exposures to biologically active concentrations of the non‐steroidal pharmaceutical, flutamide. Fish were exposed to nominal concentrations of 125, 250, 500 and 1000 µg/L of flutamide for 7 days, after which plasma vitellogenin concentration, brain aromatase activity and hepatic expression ...
Freshwater turtles (Chrysemys picta) were collected from two sites on Cape Cod, MA. One site (Moody Pond), adjacent to the Massachusetts Military Reservation (MMR), was considered potentially impacted by toxic agents deriving from contaminant point sources on the MMR. The second (reference) site (Washburn Pond), to the east of the MMR, was considered not impacted by these pollutants and was ...