
Shyrley Paola AmarillaNational University of Asuncion | UNA · Departamento de Ciencias Patológicas
Shyrley Paola Amarilla
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19
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Publications (19)
Three Beauveria bassiana and two Metarhizium brunneum strains, two of which GFP-transformed, were evaluated for virulence against fourth-instar nymphs of the sweet potato whitefly Bemisia tabaci (B. tabaci nymphs, BTN), with the following results. (1) Immersion of infested melon leaves in suspensions ranging from 105 to 108 conidia ml−1 yielded an...
Porcine reproductive and respiratory syndrome viruses (PRRSV) present a wide phenotypic and genetic diversity. Experimental infections have demonstrated viral replication, including highly pathogenic strains (HP-PRRSV), in primary lymphoid organs such as the thymus. However, studies of the bone marrow are scarce but necessary to help elucidate the...
Tuberculosis-like lesions (TBL) in pigs have been associated with microorganisms other than mycobacteria. In this work a histopathological and microbiological evaluation of TBL in pigs is shown. A total of 352 samples belonging to 171 pigs totally condemned at slaughterhouse due to generalized TBL were sampled and selected for analysis. Pyogranulom...
Free-range pigs can be infected by Mycobacterium tuberculosis complex (MTC) and may contribute to the spread of bovine tuberculosis (bTB). In the present study, the diagnostic values of bacteriological culture, a duplex real-time quantitative PCR and an antibody ELISA were evaluated in an abattoir study of submandibular lymph nodes and serum sample...
A 2-year-old female boxer dog was presented with a vaginal serosanguineous discharge not associated with oestrus. There was a friable mass occupying the upper caudal part of the vagina. Cytological and histological examination revealed a monomorphic population of neoplastic round cells consistent with canine transmissible venereal tumour (TVT). In...
Visceral leishmaniasis (VL) is primarily transmitted by an invertebrate vector, but transmission in the absence of the vector has been reported. Vertical transmission of VL has been described in man and dogs. The aim of this study was to evaluate the distribution of Leishmania amastigotes in fetal organs and histopathologic changes associated with...
A thoracic neoplastic mass in a 6 years-old German Shepherd dog was examined. The dog had apathy, regurgitation, and ascites. A large mass occupying the cranioventral, medial and caudal mediastinum was found by X ray and ultrasonography. Grossly, a 27 x 23 x 12 cm encapsulated, multilobulated, and cystic mass was found. Firms adhesions were present...