Persistent organic pollutants in eggs from south Texas Aplomado falcons

Pesticide Contamination of Bird Species from Doñana National Park (Southwestern Spain): Temporal Trends (1999-2021) and Reproductive Impacts

“…These results suggest an even more protracted decline in OCP contamination for this species since the 1980s, with a steeper decline of HCB and 4,4 ′ -DDE between 2012 and 2020-2021 than lindane, which presented a more steady decline since 1999. Similar trends were reported by other studies performed on long-lived birds (Helgason et al, 2008;Hidalgo et al, 2021). Furthermore, decreasing rates were variable between species and target compounds which is also in agreement with that reported by other authors (Helgason et al, 2008).…”

“…Avian species have been widely used in biomonitoring programmes to evaluate spatiotemporal trends of pollution, its species-level impacts, and to provide information on environmental quality (Espín et al, 2021). Non-hatched eggs have been widely used for biomonitoring contaminants in avian species because they represent a non-invasive method of sampling and their concentration in eggs is directly related to the contamination acquired by the breeding females (Espín et al, 2016;Hidalgo et al, 2021). However, there are also clear limitations when using this method, since non-hatched egg concentrations may not be representative of the contamination state of other portions of the population (e.g.…”

The State of Texas Wetlands: A Review of Current and Future Challenges

“…Carbamate and organophosphate insecticides often used in rice production exhibit acute neurotoxicity by impeding activity of acetylcholinesterase, an enzyme involved in nerve signal transmission, leading to adverse reproductive effects and mortality (Colovic et al, 2013;Fulton et al, 2013). Organochlorine pesticides, a class of chemical compounds that includes dichlorodiphenyltrichloroethane (DDT) and endosulfan, are now formally banned for use in agricultural applications, but these compounds are still present at varying concentrations in many vertebrates and wetland soils (Hidalgo et al, 2021;Land et al, 2019;Mora et al, 2020). Other pesticides still widely used in rice agriculture also pose a serious risk to human health.…”