A5024763675- Zoonotic diseases and public health
- Viral Infections and Vectors
- Yersinia bacterium, plague, ectoparasites research
- Animal Ecology and Behavior Studies
- Animal Disease Management and Epidemiology
- Fire effects on ecosystems
- Vector-borne infectious diseases
- Wildlife Ecology and Conservation
- Vector-Borne Animal Diseases
- Ecology and Vegetation Dynamics Studies
- Bartonella species infections research
- Rabies epidemiology and control
- Species Distribution and Climate Change
- Animal Behavior and Welfare Studies
- Plant and animal studies
- Helminth infection and control
- Plant and fungal interactions
- Parvovirus B19 Infection Studies
- Invertebrate Taxonomy and Ecology
- Viral gastroenteritis research and epidemiology
- Viral Infections and Outbreaks Research
- SARS-CoV-2 detection and testing
- Study of Mite Species
- Veterinary Orthopedics and Neurology
- Advanced Database Systems and Queries
University of Chile
2009-2024
Universidad Nacional Autónoma de México
2013-2017
Texas State University
2017
Pontificia Universidad Católica de Chile
2013
Abstract The potential for disease transmission at the interface of wildlife, domestic animals and humans has become a major concern public health conservation biology. Research in this subject is commonly conducted local scales while regional context neglected. We argue that prevalence infection levels influenced by three mechanisms occurring landscape level metacommunity context. First, (1) dispersal, colonization, extinction pathogens, reservoir or vector hosts, nonreservoir may be due to...
Land-use change has a direct impact on species survival and reproduction, altering their spatio-temporal distributions. It acts as selective force that favours the abundance diversity of reservoir hosts affects host–pathogen dynamics prevalence. This led to land-use being significant driver infectious diseases emergence. Here, we predict presence rodent taxa map zoonotic hazard (potential sources harm) from rodent-borne in short long term (2025 2050). The study considers three different...
The world is facing a major pulse of ecological and social changes that may favor the risk zoonotic outbreaks. Such facilitation occur through modification host's community diversity structure, leading to an increase in pathogen reservoirs contact rate between these humans. Here, we examined whether anthropization alters relative abundance richness reservoir non-reservoir rodents three Socio-Ecological Systems. We hypothesized increases rodent while decreasing species. first developed...
Bartonella infections were investigated in wild rodents from northwestern Chihuahua, Mexico. A total of 489 belonging to 14 species surveyed four areas. bacteria cultured 50.1% rodent samples (245/489). Infection rates ranged 0% 83.3% per species, with no significant difference between sites except for Cynomys ludovicianus. Phylogenetic analyses the citrate synthase gene (gltA) isolates revealed 23 genetic variants (15 novel and 8 previously described), clustering into five phylogroups....
We compared parasite load (prevalence and mean intensity) of Eutrombicula alfreddugesi larvae on the lizard Liolaemus tenuis sampled during January 2006 2007 from interior edges large forest tracts in coastal Maulino Forest (35°59′S, 72°41′W) nearby fragments (1.5–20 ha). All lizards were parasitized by chiggers regardless location (prevalence, 100%); however, intensity infestation was significantly lower at fragment with either interiors or edges. attribute differences to microclimate among...
High species diversity of the potential animal host community for a zoonotic pathogen may reduce transmission among most competent host, phenomenon called "dilution effect", but mechanisms driving this effect have been little studied. One proposed mechanism is "encounter reduction" where low-competency decrease contact rates between infected and susceptible hosts, especially in directly transmitted diseases. We conducted an experiment outdoor enclosures northwestern Mexico we manipulated...
Host identity, habitat type, season, and interspecific interactions were investigated as determinants of the community structure fleas on wild carnivores in northwestern Mexico. A total 540 belonging to seven species was collected from 64 eight species. We found that abundances some flea are explained by season host identity. Pulex irritans Echidnophaga gallinacea significantly higher spring than fall season. Flea communities carnivore hosts revealed three clusters with a high degree...
Rodent fleas from northwestern Chihuahua, Mexico, were analyzed for the presence of Bartonella and Yersinia pestis. In total, 760 belonging to 10 species tested with multiplex polymerase chain reaction analysis targeting gltA (338-bp) pla genes (478-bp) Y. pestis , respectively. Although none was positive 307 infected spp., resulting in an overall prevalence 40.4%. A logistic regression indicated that is more likely occur some flea species. From a subset -positive fleas, phylogenetic...
This study describes food habits of the culpeo fox (Lycalopex culpaeus) by scat analysis in two hills considered Priority Conservation Sites Mediterranean Region central Chile, one most disturbed and modified ecosystems country. The results showed that foxes from both sites consume introduced European rabbit (Oryctolagus cuniculus) as primary prey native small mammals secondary prey. is first record feeding Chile reports a higher consumption over pooled mammals. reason for this result, well...
Abstract Background The degree of temporal overlap between sympatric wild hosts species and their behavioral interactions can be highly relevant to the transmission pathogens. However, this topic has been scantly addressed. Furthermore, within an assemblage rodents composed native introduced have rarely discussed worldwide. We assessed nocturnal activity patterns rodent taxa consisting ( Oligoryzomys longicaudatus , Abrothrix hirta olivaceus ) black rat Rattus rattus in a temperate forest...
Recent models suggest a relationship exists between community diversity and pathogen prevalence, the proportion of individuals in population that are infected by pathogen, with most inferences tied to assemblage structure. Two contrasting outcomes this have been proposed: "dilution effect" "amplification effect." Small mammal structure disturbed habitats often differs from assemblages sylvan environments, hantavirus prevalence is negatively correlated containing high species via dilution...
Billions of genomic sequences and records species occurrence are available in public repositories (e.g. National Center for Biotechnology Information, NCBI the Global Biodiversity Information Facility, GBIF). By implementing analytical tools from different scientific disciplines, data mining these databases can aid global surveillance zoonotic pathogens that circulate among wildlife. We illustrate this by investigating Hantavirus–rodent system Americas, i.e. New World Hantaviruses (NWH)....
Native forests have been replaced by forestry plantations worldwide, impacting biodiversity. However, the effect of this anthropogenic land-use change on parasitism is poorly understood. One most important in Chile replacement native Monterey pine (Pinus radiata) plantations. In study, we analyzed (presence and prevalence) intestinal helminths from fecal samples wild rodents three habitat types: adult young central Chile. Small mammals were sampled seasonally for two years, a total 1091...
Hematology and serum biochemistry values were determined for 31 healthy captive free-ranging Culpeo foxes (Lycalopex culpaeus) sampled in central Chile between 2008 2012. The influences of sex, age, origin (captive versus foxes) on the blood parameters evaluated. generally comparable to commonly reported other wild canid species domestic dog. No differences attributable sex observed any parameter. Juveniles had higher levels alkaline phosphatase phosphorus lower mean corpuscular hemoglobin...
Ecologically based rodent management strategies are arising as a sustainable approach to control, allowing us preserve biodiversity while safeguarding human economic activities. Despite predator signals being known generally repel rodents, few field-based studies have compared the behavioral effects of several predators on different prey species, especially in Neotropical ecosystems. Here, we used camera traps study behavior species native Chilean temperate forest (Abrothrix spp.,...
The COVID-19 pandemic, caused by SARS-CoV-2 infection, has become the most devastating zoonotic event in recent times, with negative impacts on both human and animal welfare as well global economy. Although is considered a virus, it likely emerged from animals, can infect domestic wild animals. This constitutes risk for health including wildlife evidence of horizontal transmission back forth between humans Molecular surveillance different rehabilitation centers associated institutions Chile,...