High prevalence of antimicrobial-resistant genes and integrons in Escherichia coli isolates from Black-headed Gulls in the Czech Republic

Dolejská, Monika; Čížek, Alois; Literák, Ivan

doi:10.1111/j.1365-2672.2006.03241.x

Cited by 161 publications

(149 citation statements)

References 47 publications

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“…foram os gêneros e espécies bacterianas com maior percentual de resistência a diferentes antimicrobianos, podendo configurar o possível surgimento, no futuro, de cepas multirresistentes. Estudos realizados com intuito de avaliar a resistência de cepas de Escherichia coli oriundas de aves silvestres (Livermore et al 2001, Sayah et al 2005, Dolejska et al 2007, Gibbs et al 2007, demonstraram o ocorrência de cepas multirresistentes. Este dado reveste-se de relevância tendo em vista que, no momento das colheitas, foi observado que outras espécies de pássaros tinham acesso a fezes desses cracídeos possibilitando a veiculação desta bactéria para outros animais, locais, e inclusive, para humanos.…”

Section: Resultsunclassified

“…Vários estudos com cepas de bactérias isoladas de aves silvestres têm demonstrado altos índices de resistência a antimicrobianos, mesmo em amostras de animais que provavelmente nunca foram tratados com antibióticos (Livermore et al 2001, Middleton & Ambrose 2005, DeBoer et al 2007, Dolejska et al 2007, Gibbs et al 2007. No Brasil, estudo realizado em Minas Gerais, reportou elevado índice de resistência bacteriana em amostras oriundas de pássaros selvagens de vida livre (Nascimento et al 2003).…”

Section: Introductionunclassified

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Microbiota cloacal aeróbia de cracídeos cativos no Rio Grande do Sul e sua susceptibilidade a antimicrobianos

et al. 2010

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Cracids are wildlife Galliformes which inhabits the America's tropical forests. Fifty one cloacal swabs were collected from 10 different species of captive cracids from the Rio Grande do Sul State during 2007. The cloacal swab samples were submitted to bacterial isolation, identification and, subsequently; antimicrobial susceptibility testing. Ninety three bacterial isolates were obtained from the cracid population examined. The most prevalent among the isolates were Escherichia coli, and bacteria from the Staphylococcus and Streptococcus genera. All samples tested in this study were negative for Salmonella spp. The antimicrobial susceptibility tests showed that none of the 93 strains presented resistance to the antimicrobial imipinem. In addition, the lower percentages of resistance were observed against cloranfenicol and ciprofloxacine. The bacteria genus and species with the highest percentage of resistance to the different antimicrobials examined were E. coli, Serratia marcescens, Staphylococcus spp. and Streptococcus spp. In conclusion, the data presented in this article demonstrate that the cloacal microbiota of the reported cracid population is composed of several bacterial genera and species and multi-drug resistance may be a problem for the future, since some strains showed elevated percentage of resistance against several different antimicrobials.

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Section: Resultsunclassified

Section: Introductionunclassified

Microbiota cloacal aeróbia de cracídeos cativos no Rio Grande do Sul e sua susceptibilidade a antimicrobianos

et al. 2010

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“…Anseriformes may pick up more resistances because of their aquatic lifestyle and contact with liquid wastewater. For the same reasons, Corvidae and gulls are considered to be an important reservoir and vectors for antimicrobial resistances (Dolejska et al 2007;Literak et al 2012). This was not supported by our study as the mean antibiotic resistance of E. coli isolated from Corvidae was low (2.56), even when compared to the complete order of Passeriformes (2.73).…”

Section: Discussionmentioning

confidence: 99%

“…The AMR situation in wild birds in the densely populated but also intensively used agricultural region between Austria and Czech Republic has not been investigated so far in detail. Available studies were limited to ESBL producing E. coli and Enterococci or methicillin-resistant Staphylococcus aureus (MRSA) within certain bird species (Loncaric et al 2013;Dolejska et al 2007Dolejska et al , 2009. n.a.…”

Section: Discussionmentioning

confidence: 99%

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Microdilution testing reveals considerable and diverse antimicrobial resistance of Escherichia coli, thermophilic Campylobacter spp. and Salmonella spp. isolated from wild birds present in urban areas

et al. 2017

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The antimicrobial resistance (AMR) of E. coli, Salmonella spp. and thermophilic Campylobacter spp. isolated from wild birds in the Austrian-Czech border region, predominantly within the vicinity of Vienna and Brno, was determined. Bacteria were isolated from cloacal swabs taken from 53 avian species belonging to 14 orders, the majority being feral pigeons and various songbirds. Consequently, 1978 E. coli, 24 Salmonella and 99 Campylobacter isolates were tested by microdilution method against a panel of 14 (E. coli and Salmonella spp.) or ten antimicrobial substances (Campylobacter spp.). The AMR varied greatly between Austrian and Czech isolates, between different bird and bacterial species and between the different antimicrobials without consistent trends being recognizable. In 331 from 664 birds, differences in the AMR profile between the two or three E. coli isolates from the same bird were observed. Concerning E. coli, the least effective antimicrobial was cephalotin (90.8% of isolates resistant); for Campylobacter it was trimethoprim-sulfamethoxazole (71.4% of isolates resistant). None of the antimicrobials was effective against all E. coli or Campylobacter isolates. In contrast, more than half of the antimicrobials were effective against all Salmonella isolates, but 71.4% of the Czech Salmonella isolates and all of the Austrian Salmonella isolates were multi-resistant (resistant to three or more antimicrobial substances); streptomycin being the least effective antimicrobial substance (90.5% of isolates resistant). It is concluded that AMR in zoonotic bacteria from wild birds in the investigated densely populated areas is widespread and diverse, arguing for certain care at the wildlifehuman interface, but AMR to clinically important and critical antimicrobials is relatively low.

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Leaving more than footprints: Anthropogenic nutrient subsidies to a protected area

et al. 2022

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Mobile animals that traverse ecosystem boundaries can fundamentally reshape environments by providing critical nutrient and energy inputs to the ecosystems they inhabit. In particular, aggregations of seabirds often transform coastal and island ecosystems through large amounts of nutrient‐rich guano deposition. Anthropogenically driven losses of these subsidies can occur through changes in abundance of mobile species, including seabirds, and have been shown to drive whole‐scale ecosystem state change on islands. However, even though many species that forage on anthropogenic food sources are highly mobile and may thus play important roles in moving nutrients from urban systems to otherwise conserved ecosystems, the impacts of anthropogenic supplements on spatial subsidies have been largely ignored. Here we examine the effects of large nesting colonies of Western Gulls (Larus occidentalis), a generalist carnivore known to forage on human refuse, on the Channel Islands of California. Specifically, we explore how their foraging on human subsidies may change nutrient deposition patterns at their relatively remote and protected breeding islands. We equipped gulls with GPS loggers to assess the frequency of urban foraging, and we partnered this tracking data with bird density data to estimate the rate of wild and urban‐derived guano deposition on two different islands. Consistent with research on other gull species, we found high (up to 40%) but island‐specific rates of urban foraging, resulting between 66 and 93 kg ha−1 of guano in these two sites during the breeding season, a level greater than half the amount of fertilizer applied annually in typical commercial agricultural settings and likely the primary source of nitrogen and phosphorus inputs to this system. Specifically, we estimate that 27 kg ha−1 year−1 of nutrient‐rich guano is shuttled to these otherwise isolated islands from anthropogenic sources. This research highlights the large shadow (i.e., footprint) that human activity can cast on even remote ecosystems by driving significant nutrient enrichment through impacts on animal behavior and connectivity.

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High prevalence of antimicrobial-resistant genes and integrons in Escherichia coli isolates from Black-headed Gulls in the Czech Republic

Abstract: Although Black-headed Gulls do not naturally come into contact with antibiotics, these birds can be infected with resistant E. coli and potentially serve as their reservoirs, vectors and bioindicators in the environment.

Cited by 161 publications

References 47 publications

Microbiota cloacal aeróbia de cracídeos cativos no Rio Grande do Sul e sua susceptibilidade a antimicrobianos

Microbiota cloacal aeróbia de cracídeos cativos no Rio Grande do Sul e sua susceptibilidade a antimicrobianos

Microdilution testing reveals considerable and diverse antimicrobial resistance of Escherichia coli, thermophilic Campylobacter spp. and Salmonella spp. isolated from wild birds present in urban areas

Leaving more than footprints: Anthropogenic nutrient subsidies to a protected area

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