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MonographDOI

Ueber Pilzepizootien der forstverheerenden Raupen

01 Jan 1869-

About: The article was published on 1869-01-01 and is currently open access. It has received 3 citation(s) till now.

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Journal ArticleDOI
31 Dec 2011
TL;DR: Results of studies on diversity of arthropod-pathogenic fungi in selected habitats in Austria and Poland carried out in the years 2006-2007 and 2009-2010 are discussed.
Abstract: Results of studies on diversity of arthropod-pathogenic fungi in selected habitats in Austria and Poland carried out in the years 2006-2007 and 2009-2010 are discussed. In total 47 species of entomopathogenic fungi were found as pathogens of different arthropods in Austria. Twenty six entomophthoralean species from different insects and one species from mites were identified and 16 of them are recorded as new to Austria. From among 21 species of anamorphic Hypocreales (Ascomycota) affecting arthropods in Austria, 13 species so far have not been known from this country. In total 51 species of fungi affecting different arthropods in Poland were recorded, among them 28 species of Entomophthorales and 23 anamorphic Hypocreales (Ascomycota) were separated. The most frequent species of the entomopathogenic fungi both in agricultural and afforested areas in Austria were the common and usually worldwide distributed cordycipitaceous anamorphs Beauveria bassiana, Isaria fumosorosea and in areas of this study less numerous I. farinosa . The most frequent pathogens occurring in mite communities on plants and in wood infested by insects were Hirsutella species. Several entomophthoralean species developed epizootics that caused high reduction in host populations of different arthropods in both countries. Especially interesting is the first record of mycoses (up to 60% mortality), caused by Zoophthora spp. on Phyllobius beetles in a mixed forest near Bialowieza. During our joint research, we found the first time in Poland and Europe, the presence of the fungus Furia cf. shandongensis on earwigs and Hirsutella entomophila on Ips typographus adults in forest habitats. From the feeding sites of the latter bark beetle and other subcortical species in oak bark (mostly Dryocoetes villosus ) and D. alni in black alder over a dozen of various Lecanicillium strains - including few of the features not allowing to classify them to any of so far known species – were isolated both from the scolytids and from accompanying them mites, but these materials have now been successively elaborated. From the commonly occurring in these materials acaropathogenic species Hirsutella cf. brownorum, H. minnesotensis, H. nodulosa and H. rostrata , the two latter infected also adult bark beetles, whereas from the larvae and pupae some supposed nematophagous anamorphs were isolated, among them Harposporium janus and Haptocillium sp.

11 citations


Cites background from "Ueber Pilzepizootien der forstverhe..."

  • ...On the basis of bibliographical data for the European subcontinent, from Austria till the last years of XIX-th century only scanty information on museum collections and occurrence of particular entomopathogenic species – concerning mostly hyphomycetes – were published (Frauenfeld 1849; Bail 1869; Keissler 1924)....

    [...]

  • ...…bibliographical data for the European subcontinent, from Austria till the last years of XIX-th century only scanty information on museum collections and occurrence of particular entomopathogenic species – concerning mostly hyphomycetes – were published (Frauenfeld 1849; Bail 1869; Keissler 1924)....

    [...]


Journal Article
TL;DR: This study is the first detailed characterization of E. aulicae from P. scabra larvae and found Pyriform, multinucleate conidia and spherical to slightly oval resting spores were the primary features of this fungus.
Abstract: Entomophaga aulicae was monitored in populations of noctuid lepidopteran pests of soybean during the 2000, 2001, and 2002 growing seasons in South Carolina and infected only Plathypena scabra larvae. No infection by E. aulicae was detected in 2002. Average infection levels of E. aulicae in P. scabra populations in Blackville were 6.0% and 20.0% in 2000 and 2001, respectively. At Clemson, infection was 15.0% and 23.3% for the two sampling weeks in 2000, and infection reached a high of 50.0% in 2001. Pyriform, multinucleate conidia and spherical to slightly oval resting spores were the primary features of this fungus. When conidia were kept in a high humidity for 6-12 hrs they either formed long germ tubes or secondary conidia. Resting spores were formed by budding from parental cells. This study is the first detailed characterization of E. aulicae from P. scabra.

2 citations


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20111
20051
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