Progress in biological control of the Colorado beetle (Leptinotarsa decemlineata) in Eastern Europe

Abstract

Intensive studies conducted in Eastern Europe to introduce and acclimatize two predatory bugs, Perillus bioculatus and Podisus maculiventris, and one fly, Doryphorophaga doryphorae, have not given positive results so far. Seasonal colonization with predators has provided good protection of potato and aubergine crops but the method requires release of high numbers of insects. Two microbial insecticides are produced, registered and used in the USSR for controlling the Colorado beetle, namely Boverin (Beauveria bassiana) and Bitoksybacillin (Bacillus thuringiensis var. thuringiensis 202).

Synergistic interaction between Beauveria bassiana- and Bacillus thuringiensis tenebrionis-based biopesticides applied against field populations of Colorado potato beetle larvae

“…Pest control researchers reported successful control from combinations of Boverin with 1/4 rates of DDT and other insecticides (see Lipa, 1985). The explanation of this success was described in terms of the intoxicated (weakened) larvae becoming more susceptible to fungal infection.…”

“…A preparation of B. thuringiensis containing thuringiensis ( -exotoxin) as the active ingredient was produced in the Soviet Union under the name Bitoxibacillin (Lipa, 1985). Experimental thuringiensin-based preparations also have been tested in the USA (Anderson et al, 1989;Jaques and Laing, 1989).…”

“…This work has considerable scientiWc and historic signiWcance with respect to the Welds of applied insect pathology and microbial control; however, the success of these B. bassiana-based control programs was inconsistent. Foliar applications provided slow and inadequate control of highdensity larval populations and of late-instar larvae and adults (Lipa, 1985). Based on simulation modeling, recommendations were ultimately developed that called for frequent applications (at 3-to 4-day intervals) against early instar larvae (Galaini, 1984); however, results under this protocol also have been highly variable (cf.…”

Activités enzymatiques du tube digestif du prédateurPodisus maculiventris (Hem.: Pentatomidae)

“…En raison de sa voracit6 remarquable, il a 6t6 l'objet de nombreuses recherches de laboratoire et/ou de terrain en vue d'6tudier soit sa biologie et sa strat6gie de pr6dation, soit la possibilit6 de l'utiliser pour la iutte biologique contre les ravageurs de plantes cultiv6es et d'arbres forestiers (Couturier, 1938 ;Sellke & Winning, 1939 ;Morris, 1963 ;Mukerji & LeRoux, 1965 ;Tadic, 1975 ;Waddill & Shepard, 1975 ;Lopez et al, 1976 ;Ignoffo et aL, 1977 ;Marston et al, 1978 ;Gusev et al, 1980 ;Pruszynski & Wegorek, 1980 ;Filippov, 1982 ;Lipa, 1985 ;O'Neil, 1988). En raison de sa voracit6 remarquable, il a 6t6 l'objet de nombreuses recherches de laboratoire et/ou de terrain en vue d'6tudier soit sa biologie et sa strat6gie de pr6dation, soit la possibilit6 de l'utiliser pour la iutte biologique contre les ravageurs de plantes cultiv6es et d'arbres forestiers (Couturier, 1938 ;Sellke & Winning, 1939 ;Morris, 1963 ;Mukerji & LeRoux, 1965 ;Tadic, 1975 ;Waddill & Shepard, 1975 ;Lopez et al, 1976 ;Ignoffo et aL, 1977 ;Marston et al, 1978 ;Gusev et al, 1980 ;Pruszynski & Wegorek, 1980 ;Filippov, 1982 ;Lipa, 1985 ;O'Neil, 1988).…”

Advances in biological control of Leptinotarsa decemlineata in Poland1

“…It may be said that control of Colorado beetle determines the intensity of the whole plant protection programme in Poland, as chemical control is performed every year on 83-97% of the potato area and consumes the largest quantities of insecticides used in Poland (Lipa, 1985(Lipa, , 1992Piekarczyk & Lipa, 1985;Pruszynski & Wegorek, 1991).…”