Publications by authors named "Castillo-Contreras Raquel"

Wild ungulates are expanding in range and number worldwide leading to an urgent need to manage their populations to minimize conflicts and promote coexistence with humans. In the metropolitan area of Barcelona (MAB), wild boar is the main wildlife species causing a nuisance, from traffic accidents to health risks. Selective harvesting of specific sex and age classes and reducing anthropogenic food resources would be the most efficient approach to dealing with overpopulation.

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Urbanization is an ongoing global environmental change. Wildlife may respond using anthropized environments and resources, which is known as synurbization, creating human-wildlife interactions. Wild boar (Sus scrofa) populations have become common in urban areas, including the metropolitan area of Barcelona.

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Article Synopsis
  • Urban wild boar populations in Barcelona are increasing and pose risks for zoonotic pathogens like hepatitis E virus (HEV) and antimicrobial-resistant bacteria (AMR-CAMP), along with non-zoonotic threats like African swine fever virus (ASFV).
  • An Agent-Based Model (ABM) was developed to predict exposure risks and found that approximately 0.79% of the human population could be exposed to HEV and 0.80% to AMR-CAMP, highlighting the role of boar faeces in pathogen transmission.
  • The study emphasizes the need for collaboration among animal, public, and environmental health sectors using a One Health approach to mitigate risks associated with the coexistence of urban wildlife and human
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Background: Sarcoptic mange is one of the main parasitic diseases affecting the Iberian ibex Capra pyrenaica. Scabietic animals suffer a decline in body condition and reproductive fitness and in severe cases may die. Although several previous studies of the pathology of this disease and the physiological changes it produces in ibex have been carried out in recent years, our knowledge of the relationship between Sarcoptes scabiei and other ectoparasites of this host is still limited.

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Applying contemporary trapping standards when managing wildlife should no longer be an option, but a duty. Increasing wild boar populations originate a growing number of conflicts and hunting is the only cost-effective management option in most cases. However, new scenarios where hunting is unfeasible emerge and trapping necessities cope with lacking regulatory frameworks and technical guidelines.

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  • Urban wildlife ecology is increasingly important due to urbanization, with a lack of understanding about how species like wild boars adapt to urban environments and their population dynamics.
  • This study focuses on the genetic structure of urban wild boars in Barcelona to determine if they are isolated or connected to rural populations, revealing that they form a distinct island population despite gene flow from rural areas.
  • Findings suggest that urban wild boars act as a species that benefits from urban environments, leading to potential human-wildlife conflicts, and management strategies should aim to reduce their migration to cities and prevent habituation to human presence.
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  • Tick-borne pathogens (TBPs) are becoming a significant public health issue due to global changes, and wild boars are a major concern as they can host zoonotic pathogens and increase tick populations.
  • A study in the metropolitan area of Barcelona from 2014 to 2016 involved sampling wild boars and identifying tick species, finding a prevalence of Rickettsia spp. in tick pools but none in the wild boar spleens.
  • The findings indicate a transmission risk of Rickettsia spp. to local residents and suggest that while wild boars aren't direct reservoirs for Rickettsia, their presence may increase the risk of human infection through ticks.
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  • * A study in the Metropolitan Area of Barcelona analyzed fecal samples from 200 wild boars, revealing an 8.0% prevalence of β-lactam antimicrobial resistance genes and the detection of the toxigenic pathogen TcdA+ in two individuals, marking a first for Spain.
  • * The findings suggest that urban foraging wild boars are more exposed to antimicrobial resistant bacteria (AMRB) sources, indicating their role as indicators of environmental AMRB and potential public health threats, necessitating further investigation and control measures.
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Urbanisation is a global human-induced environmental change and one of the most important threats to biodiversity. To survive in human-modified environments, wildlife must adjust to the challenging selection pressures of urban areas through behaviour, morphology, physiology and/or genetic changes. Here we explore the effect of urbanisation in a large, highly adaptable and generalist urban adapter species, the wild boar (Sus scrofa, Linnaeus 1758).

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  • Fasciola hepatica, a liver parasite affecting ruminants, primarily relies on the freshwater snail Galba truncatula for its life cycle and is more common in lowland areas of Europe.
  • In a study from 2008 to 2019 in the National Game Reserve of Freser-Setcases, various species including Pyrenean chamois and domestic sheep were tested for antibodies against F. hepatica, revealing a higher prevalence in domestic cattle and sheep, with some chamois also showing signs of infection.
  • The research found F. hepatica DNA in only one snail sample collected at a high altitude, indicating the parasite can complete its life cycle in alpine regions, highlighting potential impacts of climate change on parasite distribution in
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Background: Wild boar () populations are increasing worldwide and invading urban areas. Live-capture can improve the management of this challenge, maximising efficiency, allowing scientific studies and potentially improving animal welfare. This study assesses teleanaesthesia, drop-net, corral trap and cage trap to live-capture wild boar in urban and peri-urban areas, evaluating efficiency and animal stress through haematology and serum biochemistry.

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We studied the prevalence of anticoagulant rodenticides (ARs) in liver and muscle tissues of wild boar captured in the urban area of Barcelona, the suburban area of Collserola Natural Park and the rural area of Santa Quiteria, next to Cabañeros National Park, in Spain. The objective was to assess the influence of both urbanisation and wild boar (Sus scrofa) trophic opportunism on the accumulation of these compounds. We have also evaluated the risk for human consumers of this game meat.

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  • Hepatitis E virus (HEV) is a significant health concern in Europe, with domestic pigs and wild boars being major reservoirs for the virus, and cases of unknown sources of infection are on the rise.
  • A study in Spain and Sweden revealed a higher prevalence of HEV antibodies in Spanish wild boars compared to Swedish ones, although HEV RNA levels were similar in both populations.
  • The genetic similarities between HEV strains from wild boars and those affecting humans suggest that zoonotic transmission from wild boars could pose a greater public health risk than currently recognized.
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Wild boar (Sus scrofa) population spread into urban and periurban areas has exacerbated conflicts with humans. There is a need for planned wild boar management strategies, and Population viability analysis (PVA) combined with perturbation analyses allow the assessment of the management effort of control methods. Our study aims to develop stochastic predictive models of the increasing wild boar population of the 80 km2 peri-urban Mediterranean area of Collserola Natural Park (CNP), located near Barcelona, Spain, as well as assessing specific management measures (including reduced food availability, selective harvest, and reduction in fertility).

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Porcine circovirus 3 (PCV-3) prevalence has been minimally investigated in wild boar; dynamics of infection and viral tissue distribution are currently unknown. In this study, serum samples from 518 wild boar (from years 2004 to 2018) were used to study frequency of infection. Also, serum samples from 19 boar captured and recaptured at least two times for a period of time from 1 month to 1 year were collected to determine PCV-3 infection dynamics.

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Urban wild boars (Sus scrofa) from Barcelona, Spain, harbor great diversity of Streptococcus suis strains, including strains with the cps2 gene and with the same molecular profile as local human cases. The increasing trend of potential effective contacts for S. suis transmission is of public health concern.

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Background: Sarcoptic mange has recently emerged in wild boar in Switzerland, raising the question of the origin of the infection. The main aim of this study was to assess the extent of exposure of the wild boar populations to Sarcoptes scabiei in Switzerland, prior to and after the detection of mange cases, to determine whether the mite has been recently introduced into the populations concerned. We performed a serological survey using a commercially available ELISA and 1056 archived blood samples of free-ranging wild boar from Switzerland.

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Ruminant livestock is the main reservoir of Coxiella burnetii (Cb), but little is known about the role of wildlife and ticks in its epidemiology. The Iberian ibex (Capra pyrenaica, Schinz 1838) population of "Ports de Tortosa i Beseit" (NE Spain) suffers intense tick infestations and low reproduction rates. This study aims to (1) assess the relationship between infection in ibexes (detection of serum antibodies and/or of Cb DNA in tissues) and Cb DNA presence in ticks hosted by the same ibexes; and (2) identify Cb associated risk factors.

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Wild boar populations are expanding throughout the world and intruding into periurban and urban areas. In the last years, wild boar has colonized several European cities, including our study area, the city of Barcelona. It is required to identify the main factors driving wild boar into urban areas prior to establish management measures.

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The present study evaluated the limitations of the coprological sedimentation test to assess Macracanthorhynchus hirudinaceus infestation in 59 wild boars (Sus scrofa) from central Spain. The coprological sedimentation test appeared to be a poor predictor of both prevalence of infestation and the real parasite burden due to the high number of false negative results (prevalence was reduced from 61 to 16 %). Because of the potential increased risk of this zoonosis, it is suggested that alternative techniques be used in wildlife surveillance programmes.

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