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In order to investigate the effect of insect recolonization on the insecticide-induced resurgence of crop pests, a modified Lotka-Volterra predator-pr...
Read moreEstablishing biological control agents in the field is a major step in any classical biocontrol programme, yet there are few general guidelines to hel...
Read moreThe cereal aphid outbreaks of 1979 (Metopolophium dirhodum) and 1980 (Sitobion avenae) and their lower populations in 1981, in Norfolk, eastern Englan...
Read moreThe importance of niche overlap between parasitoids in the single- or multiple-introduction problem in biological control is exhibited by mathematical...
Read moreThe breeding of red-winged blackbirds (Agelaius phoeniceus) was used in 4 flood-irrigated hay meadows in Wyoming as a model to study the effects of a ...
Read moreLife tables are presented for 4 consecutive generations of Psila rosae on carrots in southern England, and are analysed using key factor analysis. Of ...
Read moreFlashing lights can work as an effective visual deterrent to protect livestock in kraals at night against wild carnivores.
Read moreDieldrin was banned from use in sheep dips in January 1966. The proportion of golden eagle eyries in western Scotland that produced young increased fr...
Read moreThe following is virtually the author's summary. Observations in southern England in 1964-67 showed that the period when most of the Hymenopterous par...
Read moreThe following is virtually the authors' conclusion and summary. The proportion of eyries of the golden eagle (Aqutta chrysaetos) in western Scotland i...
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