Publications by authors named "Attila Sandor"

Background: Potentially zoonotic pathogens have been previously detected in bat-associated ticks, but their role in disease transmission and their frequency of feeding on non-bat hosts is poorly known.

Methodology/principal Findings: We used molecular blood meal analysis to reveal feeding patterns of the bat-associated tick species Ixodes ariadnae, I. simplex, and I.

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Birds are long-known as important disseminators of ixodid ticks, in which context mostly their latitudinal, south-to-north migration is considered. However, several bird species that occur in the eastern part of the northern Palaearctic are known to migrate westward. In this study, a female tick collected from the sedge warbler, , in Lithuania was identified morphologically and analyzed with molecular-phylogenetic methods.

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Article Synopsis
  • Research identified different strains of Bartonella sp. in bats and their ectoparasitic mites, highlighting a gap in studies focused on bacterial pathogens in insectivorous bats of boreal forests.
  • Molecular analysis of mite samples from bats across the Palearctic region revealed Bartonella DNA in several mite species, with larger mite pools showing a higher prevalence of these bacteria.
  • The presence of Bartonella spp. was linked to cave-dwelling bats and generalist mites, suggesting that these mites could act as reservoirs, maintaining and potentially spreading Bartonella infections within bat populations.
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Vine disease detection is considered one of the most crucial components in precision viticulture. It serves as an input for several further modules, including mapping, automatic treatment, and spraying devices. In the last few years, several approaches have been proposed for detecting vine disease based on indoor laboratory conditions or large-scale satellite images integrated with machine learning tools.

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Background: Fleas are important hematophagous insects, infesting mammals and birds with a worldwide distribution. Fleas of medical importance have been reported from various carnivores worldwide, such as felids, canids, or mustelids. Romania hosts a wide carnivore diversity, but very little is known about flea species that parasitize these animals in Romania.

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  • This study examines how bank voles adapt to different climates across Europe by analyzing genetic data and geographic climate variations.
  • Researchers identified 213 candidate loci for adaptation, with 74 linked to specific genes, particularly those involved in lipid metabolism and the immune system.
  • The findings highlight that both population history and climate significantly impact the genetic variation in these voles, indicating annual mean temperature as a key factor in their adaptive evolution.
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Bat flies are one of the most abundant ectoparasites of bats, showing remarkable morphological adaptations to the parasitic habit, while the relationship with their hosts is characterized by a high level of specificity. By collecting bat flies from live hosts, our intention was to elucidate the seasonal differences in bat fly occurrence and to describe factors regulating the level of incipient host specificity. Our results indicate that the prevalence and the intensity of infestation is increasing from spring to autumn for most host species, with significant differences among different fly species.

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Background: Arthropods parasites of bats play a crucial role in both ecological and public health contexts, as they have the potential to transmit zoonotic agents. The study aims to identify the distribution, and host-parasite associations of bat ectoparasites in the Grand Maghreb region (Algeria, Libya, Mauritania, Morocco and Tunisia), which has been largely understudied.

Methods: A thorough analysis of published records was conducted and we included our own field data.

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Four Ixodes species represent the subgenus Scaphixodes Schulze, 1941 in Europe, but none of them were reported to be compared in a molecular-phylogenetic context. This study compensates for this lack of data. A tick larva, morphologically identified as Ixodes (Scaphixodes) caledonicus Nuttall, 1910, was collected from an Alpine swift (Tachymarptis melba) during its nesting period in Transylvania, Romania.

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Background: Toxoplasma gondii is a protozoan parasite that infects a large spectrum of warm-blooded animals, including humans. Small rodents and insectivores play an important role in the epidemiology of T. gondii and may serve as a source of infection for both, domestic and wild definitive felid hosts.

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Article Synopsis
  • Bats are crucial in the study of zoonotic pathogens due to their complex lifestyles and ability to travel long distances, spreading various bacteria and parasites, including those carried by ectoparasites like ticks.
  • The study employed high-throughput screening and identified multiple bacterial pathogens and a protozoan parasite in samples from bats and their associated ectoparasites, highlighting the significant role of bats in maintaining the spread of these pathogens.
  • These findings stress the importance of increased surveillance and research on zoonotic pathogens from bats, as emerging threats pose risks to both human and animal health.
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Most wild mammals can serve as hosts both for tick-borne pathogens (TBPs) and for the ticks themselves. Among these, wild boars, due to their large body size, habitat and life span, show high exposure to ticks and TBPs. These species are now one of the widest-ranging mammals in the world, as well as the most widespread suid.

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Reports on adult ticks in certain regions of the Carpathian Basin date back to the 19th century. These ticks were thought to emerge from nymphs dropping from birds, then molting to adults. Although the role of migratory birds in carrying ticks of this genus is known from all parts of Europe, in most countries no contemporaneous multiregional surveillance of bird-associated ticks was reported which could allow the recognition of hotspots in this context.

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  • Bat gut microbiomes are closely linked to the diets of different bat species, affecting the diversity and structure of their microbial communities.
  • A study analyzed the gut microbiomes of five bat species with varied diets and habitats, uncovering significant differences in network complexity and unique microbial nodes among them.
  • Results indicated that Myotis myotis had the most complex microbiome network, while Myotis vivesi had the least, highlighting the impact of diet on microbial community assembly and functional capabilities.
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To obtain new data on the species diversity, host associations and spatiotemporal occurrence of flies and blood-sucking lice of veterinary importance in Malta, ectoparasites were collected at cattle, sheep and goat, pig farms, as well as dog shelters, and in two places in the absence of domestic animals. The species were identified morphologically, but voucher specimens were also analyzed with molecular-phylogenetic methods following DNA extraction. Altogether 3,095 flies (Diptera: Muscidae, Calliphoridae) were collected at farms and kennels near domestic animals, as well as 37 blowflies (Calliphoridae) in rural and urban areas without animals nearby.

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Background: The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique morphology of this species, its identification (especially of subadult stages) is difficult, and molecular-phylogenetic data to offer other diagnostic methods and a better understanding of its taxonomy are not available.

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is a geographically widespread protozoan parasite of birds. In this study, oropharyngeal swab samples were collected in Hungary and Romania from 99 columbiform birds, including 76 feral pigeons (: 42 kept for racing, 32 with urban and two with rural habitat), four common wood pigeons (), 16 ring doves () and three Eurasian collared doves (). These samples were analyzed for the presence of using molecular methods.

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This study was initiated to assess the seasonality and to investigate the morphology of questing ixodid ticks in an urban habitat in Central Europe, Hungary. A neglected part of a large cemetery, with sparse tree covering and dense lower vegetation, was sampled monthly from February 2019 to May 2021. All ticks were analyzed morphologically, and selected specimens by amplifying and sequencing two genetic markers.

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Hard ticks (Acari: Ixodidae) are considered the most important transmitters of pathogens in the temperate zone that covers most of Europe. In the era of climate change tick-borne diseases are predicted to undergo geographical range expansion toward the north through regions that are connected to southern areas of the continent by bird migration. This alone would justify the importance of synthesized knowledge on the association of tick species with avian hosts, yet birds also represent the most taxonomically and ecologically diverse part of urban vertebrate fauna.

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Article Synopsis
  • Anaplasma phagocytophilum causes granulocytic anaplasmosis in humans and various animals, primarily transmitted by the Ixodes ricinus tick in Europe.
  • The study analyzed spleen, liver, and tick samples from 18 wild mammals and found the zoonotic ecotype-I in several species, including a European wildcat and a European pine marten, indicating a diverse host range.
  • This study highlights the role of urban wildlife in maintaining the enzootic cycle for A. phagocytophilum, marking the first identification of this variant in certain species and in specific regions of Hungary.
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The Maltese Archipelago is situated in the middle of the Mediterranean Basin, between Europe and Africa, therefore representing an important stopover site for migratory birds between these two continents. Despite this, up-to-date information is not available on tick species associated with birds in Malta. Therefore, in this study, birds mist-netted for ringing by BirdLife Malta were examined for the presence of ticks between September, 2019 and May, 2021.

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Background: Among live wild mammals adapted to urban and peri-urban habitats in Europe, members of the families Felidae, Mustelidae and Sciuridae deserve special attention as pathogen reservoirs because all of these families include members that are kept as pets. We report here the results of our study on two important groups of tick-borne protozoan parasites in ticks and tissues of wild cats, mustelids and red squirrels.

Methods: DNA was extracted from the tissues of carnivores (wild cats, mustelids; n = 16) and red squirrels (n = 4), as well as from ixodid ticks (n = 89) collected from these hosts.

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Wild boars show increasing numbers and population densities throughout Europe, including Hungary. While their presence is appreciated as game animals, they are also responsible for significant agricultural damage, habitat degradation and water quality issues. In addition, wild boars may harbor ticks and can act as reservoirs of tick-borne pathogens, thus posing a risk of transmission towards humans and domestic animals.

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Introduction: is a common tick parasite of small-to-medium size ungulates, principally in warm, temperate, and subtropical areas. Although common in livestock and showing a wide geographic distribution, its epidemiological role in tick-borne bacterial disease is barely known. This study addressed the knowledge gap and aimed to screen for the presence of and spotted fever group (SFG) species in ticks collected from domestic animals in Romania, Eastern Europe.

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The current status of tick species, important tick-borne bacteria and protozoan parasites is well-documented in Switzerland. However, reports on the genetic diversity and geographical relationships of tick species in this country appear to be in part lacking or outdated. Thus, the aim of this study was to collect ticks from various host species in southern Switzerland, to compare them in a geographical context and to screen in these samples rare tick-borne pathogens hitherto not reported or having low prevalence in Switzerland.

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