Results 161 to 170 of about 2,451 (206)
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On the Pathogenicity of Metarhizium Pemphigi against Ips Typographus L.
Proceedings of the Bulgarian Academy of Sciences, 2022Efficacy of entomopathogenic fungus Metarhizium pemphigi was evaluated against Ips typographus adults in a laboratory bioassay for the first time. A series of four conidial concentrations (2×104–2×107 conidia/ml) were used. The cumulative mortality caused by M.
Takov, Danail +4 more
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Ascospores hyperphoretic on mites associated with Ips typographus
Mycological Research, 1989Ten morphologically distinct types of ascospores were recognized from the bodies of 17 species of mites associated with adults of Ips typographus collected from pheromone traps in Sweden. The ascospores seemed to stick anywhere on the mites, with no special spore-carrying structures (sporothecae) evident.
John C. Moser +2 more
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Computer simulated host selection in Ips typographus
Entomologia Experimentalis et Applicata, 1989AbstractForaging behaviour by Ips typographus L. (Coleoptera; Scolytidae) was simulated to assess host finding and reproductive success of beetles following four different strategies: 1. random search, 2. upwind search, in which beetles follow a prevailing flight direction, 3.
G. Gries, R. Nolte, W. Sanders
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A review: chemical ecology of Ips typographus (Coleoptera, Scolytidae)
Journal of Forestry Research, 2006Chemical ecology of the spruce bark beetle Ips typographus (L.) was reviewed. The outbreak of I. typographus in central Europe triggered extensive research on chemical ecology. Males initiate host location and produce semiochemicals which attract both males and females.
Xiao-ling Sun +3 more
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European spruce bark beetle, Ips typographus (L.)
2023The European spruce bark beetle (Ips typographus), widespread across Eurasia, is a major pest of coniferous forests in Europe, primarily attacking Norway spruce (Picea abies). High beetle populations can result in significant damage, especially following environmental stressors like storms.
Neil Audsley +16 more
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Insect Biochemistry and Molecular Biology, 2022
Eurasian spruce bark beetle, Ips typographus, is a destructive pest in spruce forests. The ability of I. typographus to colonise host trees depends on its massive aggregation behaviour mediated by aggregation pheromones, consisting of 2-methyl-3-buten-2-ol and cis-verbenol.
Rajarajan Ramakrishnan +8 more
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Eurasian spruce bark beetle, Ips typographus, is a destructive pest in spruce forests. The ability of I. typographus to colonise host trees depends on its massive aggregation behaviour mediated by aggregation pheromones, consisting of 2-methyl-3-buten-2-ol and cis-verbenol.
Rajarajan Ramakrishnan +8 more
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Competition between larvae of Ips typographus
Entomologia Experimentalis et Applicata, 1986AbstractA series of laboratory experiments were conducted to provide parameters for a simulation model for Ips typographus L. (Coleoptera, Scolytidae). This model illustrates larval competition and predicts brood survival in bolts. Brood survival depended upon larvae attaining a weight of at least 1.6 mg dry weight.
Mart C. M. De Jong, Peter Grijpma
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On the longevity of Ips typographus L. adults
Journal of Applied Entomology, 1986AbstractStudies with caged adults of Ips typographus during the period autumn 1982‐spring 1985 revealed that none of 2212 parent beetles which oviposited in 1983 survived a second hibernation (1983–1984). In a repetition experiment one male specimen of 359 parent beetles survived a second hibernation (1984–1985).ZusammenfassungÜber die Lebensdauer von ...
Ø. Austarå, F. Midtgaard
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Ips typographus: Natural Enemies and the Forester
1995USDA Forest Service General Technical Report NC ...
Grégoire, Jean-Claude +4 more
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Přirození nepřátelé lýkožrouta smrkového (Ips typographus)
2021Bark beetles (Scolitynae) are among the most important pests of forest stands, where they cause extensive damage, especially in spruce monocultures. Their negative effect is to attack the host tree, which is its source of food and at the same time provides them with space for reproduction.
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