- Poznan, Wielkopolskie, Poland
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In North America, the Colorado potato beetle, Leptinotarsa decemlineata, is often infected with the host- specific, gut-inhabiting Colorado potato beetle spiroplasma (CPBS). CPBS is apparently a commensal, but it may be useful in... more
In North America, the Colorado potato beetle, Leptinotarsa decemlineata, is often infected with the host- specific, gut-inhabiting Colorado potato beetle spiroplasma (CPBS). CPBS is apparently a commensal, but it may be useful in biocontrol if it can be transformed to express an insect-lethal gene. Difficulty in cultivating the organism, however, has hindered the development of a suitable transformation system. In
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Bioinsecticidas: Fundamentos y Aplicaciones de Bacillus thuringiensis en el Control Integrado de Plagas [Bioinsecticides: Fundamentals and Applications of Bacillus thuringiensis in Integrated Pest Control] P. Caballero and J. Ferre (Editors) Universidad Publica de Navarra, PHYTOMA-España, Valenci...more
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Spiroplasma sp. strain SMA(T), isolated in Poland from white satin moth larvae, Leucoma salicis L. (Lepidoptera: Lymantriidae), was serologically distinct from other Spiroplasma species, groups or subgroups. Dark-field microscopy of the... more
Spiroplasma sp. strain SMA(T), isolated in Poland from white satin moth larvae, Leucoma salicis L. (Lepidoptera: Lymantriidae), was serologically distinct from other Spiroplasma species, groups or subgroups. Dark-field microscopy of the cells revealed the classical helical shape and subsequent transmission electron microscopy revealed cells surrounded by only a single cell membrane (lacking a cell wall). Growth of strain SMA(T) occurred in M1D medium at 30 degrees C. Strain SMA(T) catabolized both glucose and arginine, but did not hydrolyse urea. The G+C content of the DNA was 24+/-1 mol% as determined by melting temperature analysis. Serological analysis revealed a very weak cross-reactivity (positive reaction only up to a 1 : 80 dilution) with two Spiroplasma strains, 277F (Spiroplasma sp. group I-4) and LB-12 (Spiroplasma sp. group I-5). Strain SMA(T) (=ATCC BAA-521T=NBRC 100392T) is designated the type strain of a novel species, Spiroplasma leucomae sp. nov. (class Mollicutes: order Entomoplasmatales: family Spiroplasmataceae).
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The host suitability of Agrotis segetum Denis & Schiff., A. ipsilon Hufn., Spodoptera littoralis Boisd, S. exigua Hub., Mythimna loreyi Duponchel and Mamestra oleracea L. for the gregarious braconid Cotesia ( = Apanteles)... more
The host suitability of Agrotis segetum Denis & Schiff., A. ipsilon Hufn., Spodoptera littoralis Boisd, S. exigua Hub., Mythimna loreyi Duponchel and Mamestra oleracea L. for the gregarious braconid Cotesia ( = Apanteles) telengai Tobias was determined under laboratory conditions. The parasitoid only completed its development in larvae of A. segetum. The percentage of successfully parasitized larvae and the mean
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ABSTRACT Populations of Ocnogyna baetica were sampled during 1989–92 in various provinces of Southern Spain for the presence of pathogenic microorganisms, nematodes and parasitic insects. A total number of 8615 larvae have been diagnosed... more
ABSTRACT Populations of Ocnogyna baetica were sampled during 1989–92 in various provinces of Southern Spain for the presence of pathogenic microorganisms, nematodes and parasitic insects. A total number of 8615 larvae have been diagnosed among which the following biotic factors have been encountered and identified: viruses (Baculovirus sp. Entomopoxvirus sp.), fungus (Beauveria bassiana), mermithid (Hexamermis sp.), braconids (Cotesia plutellae, Glyptapanteles compressiventris, Meteorus versicolor), tachinids (Chaetogena obliquata, Tryphera lugubris. These pathogens and parasitoids represent new species that have not been reported in Spain or in O. baetica before. Data on their contribution to host mortality is presented.
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ABSTRACT Samples of rape blossom beetles, Meligethes spp., from 12 countries in Eastern and Western Europe were inspected for the occurrence of Nosema meligethi I. &R. infection. From most countries about a dozen samples and a few... more
ABSTRACT Samples of rape blossom beetles, Meligethes spp., from 12 countries in Eastern and Western Europe were inspected for the occurrence of Nosema meligethi I. &R. infection. From most countries about a dozen samples and a few hundred beetles were inspected. A total of 13 910 individual beetles were checked under a compound microscope, and of these, 561 were found to be infected (4.03%). Despe careful examination, infection was not detectable in samples from the UK (1039 beetles inspected), Germany (694), Sweden (489), or Swzerland (280). One infected beetle was found among 444 beetles inspected from Austria, and one from Denmark (1/85). In contrast, the parase was found rather regularly in samples from Finland and from Eastern European countries. No obvious reason for this pattern of infection is known, but pesticide usage at or close to the sampling ses may play a role, because most samples from whichNosema was detected originated from areas where few pesticides are used. Spore size measurements were made from seven N. meligethi isolates, and they appeared relatively uniform. appears that artificial spread of the disease might be worthwhile in an effort towards the integrated control of M. aeneus F.
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This paper presents the ultrastructure and characteristic features of Nosema leptinotarsae infecting L. decemlineata collected in Trabzon (Turkey). Fresh spores are oval, 4.69 ± 0.19 μm in length and 2.43 ± 0.12 μm in width (n = 50). The... more
This paper presents the ultrastructure and characteristic features of Nosema leptinotarsae infecting L. decemlineata collected in Trabzon (Turkey). Fresh spores are oval, 4.69 ± 0.19 μm in length and 2.43 ± 0.12 μm in width (n = 50). The spore wall is thick and measures 180 to 250 nm and consists of a clear endospore (130 to 170 nm) and
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Page 1. Biocontrol Science and Technology (1994) 4, 343-345 A Newly Recorded Entomopoxvirus B in Anacridium aegyptium (Orthoptera: Acrididae) JERZY J. LIPA,1 PEDRO HERNANDEZ-CRESPO,2 JOSE A. GONZALEZ-REYES3 AND CANDIDO SANTIAGO-ALVAREZ4 ...