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Changes in numbers of cereal aphids (mainly Sitobion avenae (F.) and Metopolophium dirhodum (Wlk.) but including also Rhopalosiphum padi (L.)) were me...
Read moreBrain cholinesterase (ChE) inhibition and fenitrothion residues were determined in white-throated sparrows (Zonotrichia albicollis) that had been expo...
Read moreLandscape composition affects local arthropod biodiversity, including herbivorous insects and their predators, yet to date landscape effects on insect...
Read moreIn an ecological approach to risk assessment, population models may play an important role. The population dynamic models described take into account ...
Read moreAdult Heteroptera were sampled regularly in 1973-75 in experimental plots of Arrhenatherum-dominated calcareous grassland in Cambridgeshire, UK. The e...
Read moreA marking method for Hylemya (Erioischia) brassicae (Bch.), in which the flies were fed on a sucrose solution containing radioactive phosphorus (32P) ...
Read moreAn equation for estimating invertebrate predation was tested in laboratory experiments with Sitobion avenae and polyphagous predators (Agonum dorsale,...
Read moreAbove-ground arthropod populations in field plots of barley receiving no nitrogen (barley 0), barley receiving 120 kg nitrogen per hectare per year (b...
Read moreAn apionid weevil, Trichapion lativentre [Apion lativentre] has been introduced into South Africa where it is the only herbivore of any consequence on...
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