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BNI June 1997 Vol 18. No.2 : Review

D. T. Briese and D. A. McLaren, Community involvement in the distribution and evaluation of biological control agents: Landcare and similar groups in Australia, BNI 18(2) Back to BNI Reviews
Abstract : A key element for achieving a successful outcome to a biological control programme is the effective redistribution of agents throughout the range of infestation of the target weed. Australian biological control workers have enjoyed a good reputation for scientifically based and systematic studies leading to the selection, release and establishment of control agents. However, in the past, redistribution of agents following establishment has been done in a fairly piecemeal fashion. A recent social phenomenon in Australia has been the development of community groups that have become concerned with, and actively involved in, the remediation of a wide range of environmental problems. Weed biological control practitioners are using these groups more and more frequently to develop control agent release networks, ensuring a more systematic redistribution of agents and more rapid delivery of biological control to the end-user. Examples of this, in particular those involving the Landcare Program, are given to illustrate how the harnessing of community interest can provide a valuable resource for the classical biological control of weeds, both for the redistribution of agents and for their subsequent evaluation
Nicholas J. Fielding and Hugh E. Evans, Biological control of Dendroctonus micans (Scolytidae) in Great Britain, BNI 18(2) Back to BNI Reviews
Abstract : The European spruce bark beetle Dendroctonus micans was discovered in Britain in 1982. Although its potential to damage spruce plantations had been recognized for many years, this potentially damaging beetle had been present in the country for at least 10 years before being detected. This paper describes all aspects of the integrated pest management strategy that was carried out by the UK Forestry Commission, and in particular the role of the specific predator Rhizophagus grandis, the main tool in the biological control programme. There is now good evidence that the predator has established in Britain and is important in regulating the endemic levels of D. micans. Thirteen years after its discovery, D. micans is now considered under control within the infested area of Britain, and its management is now part of normal forest operations