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Independently, both Ponsard and Arditi 3 , and Scheu and Falca 4 have now used the natural abundance of N-stable isotopes ( 14 N and 15 N) to characterize the trophic
The fate of a large proportion of attempted releases is abject failure: 65% and 41% of agents released to control insect and weed pests, respectively, have never got off the
The role of predator psychology in warning signal design has been predomin- antly concerned with how insect colour patterns have evolved in the face of avian predators.. It is
infections, the gametocyte sex ratio remained female biased throughout; however, in infections successfully con- tained by protective immune responses, sex ratios became
of Ethiopian Jews to Israel) results in changes towards responses more typical of populations of developed countries where helminths are no longer endemic.. The limitation of this
Numerical responses of generalist consumers to pulsed resources, followed by depletion of the pulsed resource, are likely to cause situations in which, because of a delayed response
Changes in research focus over a 20-year period (1979–1998), as shown by the number of publications on ecological topics using major groups of terrestrial vertebrates. The number
Peter Starkweather (Nevada University, Las Vegas, USA) stressed the dual role of rotifers as predators and prey, and showed, in agreement with other partici- pants (e.g. Ian
