Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0851341 (infestation)
 10,121 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A survey of wild rodents was performed in the Morro Bay area of central coastal California to determine serological and polymerase chain reaction (PCR) prevalence of Anaplasma phagocytophilum Dumler, Barbet, Bekker, Dasch, Palmer, Ray, Rikihisa, and Rurangirwa, Borrelia burgdorferi Johnson, Schmidt, Hyde, Steigerwalt, and Brenner, Francisella tularensis McCoy, and Yersinia pestis Yersin; to describe the ectoparasitic fauna on important vector-borne disease hosts; and to determine whether pathogen exposure was associated with infestation by ectoparasites. We trapped 411 rodents from 10 species in 2004 and 2005. Anaplasma phagocytophilum exposure was detected in 11% of all wild rodents tested, with seropositive animals in eight species. Anaplasma phagocytophilum DNA was detected by PCR amplification in Neotoma fuscipes Baird and Reithrodontomys megalotis Baird (0.6% of all rodents). Yersinia spp. exposure was identified in 3.2% of all rodents tested, with highest detected exposure in peridomestic rodents, Mus musculus L. (20%), and Rattus rattus L. (50%). No individuals tested positive for the Y. pestis pla gene by PCR. In total, 338 fleas were identified from each of 10 rodent species examined. The most abundant flea was Malareus telchinus Rothschild. Relative density of flea infestation was highest on Spermophilus beecheyi Richardson and Microtus californicus Peale. Ticks recovered from trapped animals included Ixodes angustus Neumann, Ixodes pacificus Cooley & Kohls, Ixodes spinipalpis Hadwen & Nuttall, and Dermacentor occidentalis Marx. Given the moderate climate and diversity of rodents and arthropods in the Morro Bay area, ongoing investigation of this region will be helpful in understanding disease maintenance cycles.
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PMID:Ectoparasite diversity and exposure to vector-borne disease agents in wild rodents in central coastal California. 1742 5

This study assessed the potential impact of various Fusarium strains on the population development of sugarbeet cyst nematodes. Fungi were isolated from cysts or eggs of Heterodera schachtii Schmidt that were obtained from a field suppressive to that nematode. Twenty-six strains of Fusarium spp. were subjected to a phylogenic analysis of their rRNA-ITS nucleotide sequences. Seven genetically distinct Fusarium strains were evaluated for their ability to influence population development of H. schachtii and crop performance in greenhouse trials. Swiss chard (Beta vulgaris) seedlings were transplanted into fumigated field soil amended with a single fungal strain at 1,000 propagules/g soil. One week later, the soil was infested with 250 H. schachtii J2/100 cm(3) soil. Parasitized eggs were present in all seven Fusarium treatments at 1,180 degree-days after fungal infestation. The percentage of parasitism ranged from 17 to 34%. Although the most efficacious F. oxysporum strain 471 produced as many parasitized eggs as occurred in the original suppressive soil, none of the Fusarium strains reduced the population density of H. schachtii compared to the conducive check. This supports prior results that Fusarium spp. were not the primary cause of the population suppression of sugarbeet cyst nematodes at this location.
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PMID:Assessment of Parasitic Activity of Fusarium Strains Obtained from a Heterodera schachtii-Suppressive Soil. 1925 11