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Title: Salmonella and Listeria spp. carriage by gulls (larids)
Other Titles: O papel dos Larídeos como portadores de Salmonella e Listeria spp
Authors: Duarte, Elsa Leclerc
Guerra, Maria Manuela
Bernardo, Fernando Manuel
Keywords: Larídeos
Salmonella sp.
Listeria sp.
Issue Date: Oct-2002
Publisher: Sociedade Portuguesa de Ciências Veterinárias
Abstract: As in other countries, the population of gulls (Laridae) has been increased exponentially in Portugal. To evaluate the public health implications of this development, two hundred and eighty-five samples of gulls’ faeces were investigated for two bacteria species of zoonotic importance, Salmonella spp. and Listeria sp. Thirty-seven (13.0 %) samples were positive for Salmonella spp. Amongst these, teh most common serovars were Salmonella Typhimurium (37.8%) and Salmonella Derby (18.9%). Simultaneously presence of two different serovars was detected in six samples. Twenty four different antibioresistance profiles were detected in Salmonella sp. isolates (68.7%).Phage-types found for Salmonella Typhimurium 5+ were PT 12 and U302. Listeria spp. were present in twenty-eight (9.8%) samples, seventeen of which had Listeria monocytogenes (6.0%). Other species isolated were Listeria seeligeri (0.7%), L. innocua (5.3%), and L.welshimeri (0.7%). Seven samples were co-contaminated with two or more species. A combination of serotyping, phage-typing, cadmium and arsenic sensitivities were used to subtype 18 of the L. monocytogenes isolates recognising at least 10 different strains. Both bacterial genera were simultaneously isolated from twelve samples (4.2%). Several epidemiological explantion and the possible significance as markers waste management in the geographical area studied are discussed.
Type: article
Appears in Collections:MVT - Publicações - Artigos em Revistas Nacionais Com Arbitragem Científica
MED - Publicações - Artigos em Revistas Nacionais Com Arbitragem Científica

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