Organochlorine contaminants in cormorant, darter, egret, and ibis eggs from South Africa.

摘要: Abstract During the last 15 years, no research has been published on levels of pesticides in bird eggs from South Africa, despite high found previously. We analysed African darter, cattle egret, reed cormorant, sacred ibis, as well single some other species, and HCB, DDTs, HCHs, chlordanes PCBs at detectable levels. The presence mirex all species was unexpected, since this compound never registered Africa. It also seemed if terrestrial feeding birds had higher DDE:PCB ratios when compared with aquatic birds. Except for chlordane, darter highest compounds (mean 370 300 ng g −1 ww Σpesticides ΣPCBs, respectively). Multivariate analysis clearly distinguished terrestrially pollution profile. (aquatic feeding) egret (terrestrial would be good indicator candidates. Eggshell thinning detected associated most compounds, including DDE PCBs. raise a concern that generally longer living warmer climates, laying fewer per clutch, might increased risk trophically similar exposed to equivalent colder climates. Given scarcity water biodiversity Southern climate change will exert strong pressure, any additional anthropogenic contamination can cause subtle behavioural, developmental reproductive changes, have serious effects.