108 research outputs found
Considerazioni metodologiche
No full textAgli importanti miglioramenti compiuti in campo clinico per la prevenzione, la diagnosi precoce e quando possibile il trattamento, ancora contenitivo più che emendativo, delle lesioni del sistema nervoso centrale (SNC), si stanno affiancando, se pur con una latenza non sempre giustificata, altrettanti progressi nell'ambito della rieducazione del bambino affetto da paralisi cerebrale infantile (PCI)
Ineffectiveness of Apistan tretement against the mite Varroa jacobsoni Oud. in several districts of Lombardy (Italy)
No full textThe effectiveness of Apistan® (Sandoz) was tested in 8 apiaries (78 colonies) in some districts of Lombardy (north Italy) during 1993. The strips were left for 22 d in colonies in which the queens were caged inside the hives. On the 24th day, a treatment with 5 ml/comb of Perizin® was given. The fallen mites were recorded every 8 d during Apistan® treatment and 2 d after Perizin®. The treatment's average effectiveness varied greatly from apiary to apiary (min 4%, max 89.5%). In Lombardy, where quite a high mortality of colonies (caused by varroosis) was reported by some beekeepers during autumn 1992, the average effectiveness of the treatment with Apistan® was 44.5%. The results indicate different levels of resistance of Varroa jacobsoni to fluvalinate
Effect of thymol and resveratrol administered with candy or syrup on the development of Nosema ceranae (Apis mellifera) artificially infected honeybees.
No full textThe aim of this study was to evaluate the effect of thymol and resveratrol administered in two different formulation modes (candy and syrup) on the development of Nosema ceranae and on the longevity of honey bees. Emerging bees from a nosema-free apiary were individually infected with 1 μL of sucrosesyrup containing 18000 spores of N. ceranae, placed in cages, and kept in an incubator at 33 ◦C and 65% RH. The experimental groups were fed candy or syrup prepared with thymol (100 ppm) or resveratrol (10 ppm). Infection levels were monitored over a 25 day period by removal and dissection of two live bees per cage. On day 25, post-infection bees fed with thymol syrup had significantly lower levels of infection (60 ± 9 million spores/bee) compared to control bees (138 ± 7 million spores/bee). Bees fed with thymol or resveratrol syrup lived significantly longer (23 and 25 days, respectively) than bees fed with control syrup (20 days). Thymol treated syrup appears to be promising in the control of nosema infection
Negative correlation between Nosema ceranae spore loads and deformed wing virus infection levels in adult honey bee workers
No full textInteractions between pathogens might contribute to honey bee colony losses. Here we investigated if there is an association between the microsporidian Nosema ceranae and the deformed wing virus (DWV) in different body sections of individual honey bee workers (Apis mellifera ligustica) under exclusion of the vector Varroa destructor. Our data provide correlational evidence for antagonistic interactions between the two pathogens in the midgut of the bees
Micosi
No full textDopo una panoramica sul mondo dei funghi, vengono trattate le principali micosi che interessano l'alveare: ascosferosi o covata calcificata, aspergillosi o covata pietrificata e la muffa del polline (Bettsia alvei)
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