Laux,W., Sicker W., und Blumenbach,D.: Bibliographie der Pflanzenschutz-Literatur. Neue Folge,Band 4, Heft 1. Biologische Bundesanstalt für Land- und Forstwirtschaft,Berlin-Dahlem,Parey Verlag,Berlin, Hamburg 1970, kart. 161 S., DM 16,–     

A. Krauss 《植物养料与土壤学杂志》1971,129(3):252-252

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Linking life history traits to pollinator loss in fragmented calcareous grasslands     

Birgit Jauker  Jochen Krauss  Frank Jauker  Ingolf Steffan-Dewenter 《Landscape Ecology》2013,28(1):107-120

To gain insight into the drivers of pollinator loss, a holistic approach to land-use change including habitat size, isolation, habitat quality and the surrounding landscape matrix is necessary. Moreover, species’ responses to land-use change may differ depending on their life history traits such as dispersal ability, trophic level, or sociality. We assessed species richness and life history traits of wild bees in 32 calcareous grasslands in central Germany that differ in size, connectivity, resource availability and landscape context. Declining habitat area and, to a lesser degree, reduced diversity of the surrounding landscape were the key factors negatively influencing species richness. In the community-wide analysis, small body size and solitary reproduction were traits that made species particularly vulnerable to habitat loss. Contrary to our expectations, cleptoparasitic species were not more affected by reduced habitat area and landscape diversity than nest-building species. We performed further detailed trait analyses within the family Halictidae to prevent possible confounding effects due to trait correlations across families. Here, social as opposed to solitary species were more affected by habitat loss. We conclude that the opposite pattern observed for all social bees was mainly caused by large-sized social bumblebee species with high mobility and large foraging distances. Our results demonstrate the risks of concealed trait interference when analyzing community-wide patterns of life history traits. As a consequence, conservation requirements of small social bee species might be overlooked by generalizations from community responses.  相似文献   

Predicting the next influenza virus     

S Krauss  RG Webster 《Science (New York, N.Y.)》2012,337(6095):644

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Emergence of H3N2 reassortant influenza A viruses in North American pigs     

Zhou NN  Senne DA  Landgraf JS  Swenson SL  Erickson G  Rossow K  Liu L  Yoon KJ  Krauss S  Webster RG 《Veterinary microbiology》2000,74(1-2):47-58

In late summer through early winter of 1998, there were several outbreaks of respiratory disease in the swine herds of North Carolina, Texas, Minnesota and Iowa. Four viral isolates from outbreaks in different states were analyzed, both antigenically and genetically. All of the isolates were identified as H3N2 influenza viruses with antigenic profiles similar to those of recent human H3 strains. Genotyping and phylogenetic analysis demonstrated that the four swine viruses had emerged through two different pathways. The North Carolina isolate is the product of genetic reassortment between human and swine influenza viruses, while the others arose from reassortment of human, swine and avian viral genes. The hemagglutinin genes of the four isolates were all derived from the human H3N2 virus circulating in 1995. It remains to be determined if either of these recently emerged viruses will become established in the pigs in North America and whether they will become an economic burden.  相似文献   

Inapparente Virusinfektionen beim Geflügel und ihre Bedeutung unter Berücksichtigung eines erstmals isolierten Agens     

H. Krauss 《Zoonoses and public health》1968,15(3):317-352

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Genetic Variability and Host Specialization in the Latin American Clade of Ceratocystis fimbriata     

Baker CJ  Harrington TC  Krauss U  Alfenas AC 《Phytopathology》2003,93(10):1274-1284

ABSTRACT The Ceratocystis fimbriata complex includes many undescribed species that cause wilt and canker diseases of many economically important plants. Phylogenetic analyses of DNA sequences have delineated three geographic clades within Ceratocystis fimbriata. This study examined host specialization in the Latin American clade, in which a number of lineages were identified using sequences of the internal transcribed spacer (ITS) region of the rDNA. Three host-associated lineages were identified from cacao (Theobroma cacao), sweet potato (Ipomoea batatas), and sycamore (Platanus spp.), respectively. Isolates from these three lineages showed strong host specialization in reciprocal inoculation experiments on these three hosts. Six cacao isolates from Ecuador, Trinidad, and Columbia differed genetically from other cacao isolates and were not pathogenic to cacao in inoculation tests. Further evidence of host specialization within the Latin American clade of Ceratocystis fimbriata was demonstrated in inoculation experiments in growth chambers using sweet potato, sycamore, Colocasia esculenta, coffee (Coffea arabica), and mango (Mangifera indica) plants; inoculation experiments in Brazil using Brazilian isolates from cacao, Eucalyptus spp., mango, and Gmelina arborea; and inoculation experiments in Costa Rica using Costa Rican isolates from cacao, coffee, and Xantho-soma sp. Hosts native to the Americas appeared to be colonized by only select pathogen genotypes, whereas nonnative hosts were colonized by several genotypes. We hypothesize that local populations of Ceratocystis fimbriata have specialized to different hosts; some of these populations are nascent species, and some host-specialized genotypes have been moved to new areas by humans.  相似文献   

Characterization of a murine IgG3 monoclonal antibody against Chlamydia-specific lipopolysaccharide and its purification by affinity chromatography on IgG Fc-receptors from Streptococcus dysgalactiae     

D Thiele  C L?mmler  R Sting  H Krauss 《Zentralblatt für Veterin?rmedizin. Reihe B. Journal of veterinary medicine. Series B》1991,38(1):11-16

Purification of a murine IgG3 monoclonal antibody (Mab 22) directed against an epitope of Chlamydia-specific lipopolysaccharide by affinity chromatography on recently described solid phase IgG Fc-receptors from Streptococcus dysgalactiae is reported. SDS-PAGE studies revealed the purity of the eluted antibody. The purified Mab 22 was characterized by determination of class, subclass and light chain-type, and by dot tests and immunoblot analysis.  相似文献   

Zur Struktur eines neuen Geflügel-Orphan-Virus     

H. Krauss  S. Ueberschr 《Zoonoses and public health》1966,13(3):239-249

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Hassebrauk,K.: Nomenklatur,geographische Verbreitung und Wirtsbereich des Gelbrostes,Puccinia striiformis West. Mitteilungen aus der Biologischen Bundesanstalt für Land- und Forstwirtschaft Berlin-Dahlem,Heft 116. Verlag Parey Berlin u. Hamburg 1965. 75 Seiten,kart. 17,50 DM     

A. Krauss 《植物养料与土壤学杂志》1966,112(1):53-53

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Die Wirkung von Tylosin auf Vermehrung und Struktur von Coxiella burneti im bebrüteten Hühnerei     

H. Krauss  W. Leyk 《Zoonoses and public health》1974,21(4):271-279

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