Ticks and tick-borne pathogens in wild birds in Greece

Diakou, Αnastasia; Norte, Ana Cláudia; Carvalho, Isabel Lopes de; Núncio, Maria Sofia; Nováková, Markéta; Kautman, Matej; Alivizatos, Haralambos; Kazantzidis, Savas; Sychra, Oldřich; Literák, Ivan

doi:10.1007/s00436-016-4943-3

Cited by 30 publications

(31 citation statements)

References 47 publications

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“…This is also what we observed on the ancestry recombination graph reconstructed using sequences of the 85 European STs and generated in beasT2 (Bouckaert et al, 2019;Figure 5 Ixodes ricinus is a generalist tick and birds are known to be important hosts for its immature stages (Norte et al, 2012;Santos-Silva et al, 2011). The other tick species (I. frontalis, I. arboricola and I. ventalloi) and genera (Haemaphysalis and Hyalomma) collected from birds in this study have also been previously reported on birds (Diakou et al, 2016;Norte et al, 2012;Pérez-Eid, 2007) and differ in vector competence for Borrelia (Eisen & Lane, 2002;. Some bird species such as hole-nesting birds (P. major and F. albicollis), Poupon et al, 2006), Spain (9.2%; Palomar et al, 2016) and Portugal (7.3%; Norte et al, 2015).…”

Section: Multilocus Sequence Typing/multilocus Sequence Analysis (Msupporting

confidence: 85%

“…Ixodes ricinus is a generalist tick and birds are known to be important hosts for its immature stages (Norte et al, ; Santos‐Silva et al, ). The other tick species ( I. frontalis , I. arboricola and I. ventalloi ) and genera ( Haemaphysalis and Hyalomma ) collected from birds in this study have also been previously reported on birds (Diakou et al, ; Norte et al, ; Pérez‐Eid, ) and differ in vector competence for Borrelia (Eisen & Lane, ; Heylen, Krawczyk, et al, ; Heylen, Sprong, et al, ). Some bird species such as hole‐nesting birds ( P. major and F. albicollis ), T. merula and T. philomelos were hosts for different tick species; however, the opportunities for cofeeding transmission of B. burgdorferi s.l.…”

Section: Discussionsupporting

confidence: 73%

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Host dispersal shapes the population structure of a tick‐borne bacterial pathogen

Norte

Margos²,

Becker

et al. 2020

Molecular Ecology

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Birds are hosts for several zoonotic pathogens. Because of their high mobility, especially of longdistance migrants, birds can disperse these pathogens, affecting their distribution and phylogeography. We focused on Borrelia burgdorferi sensu lato, which includes the causative agents of Lyme borreliosis, as an example for tick‐borne pathogens, to address the role of birds as propagation hosts of zoonotic agents at a large geographical scale. We collected ticks from passerine birds in 11 European countries. B. burgdorferi s.l. prevalence in Ixodes spp. was 37% and increased with latitude. The fieldfare Turdus pilaris and the blackbird T. merula carried ticks with the highest Borrelia prevalence (92 and 58%, respectively), whereas robin Erithacus rubecula ticks were the least infected (3.8%). Borrelia garinii was the most prevalent genospecies (61%), followed by B. valaisiana (24%), B. afzelii (9%), B. turdi (5%) and B. lusitaniae (0.5%). A novel Borrelia genospecies “Candidatus Borrelia aligera” was also detected. Multilocus sequence typing (MLST) analysis of B. garinii isolates together with the global collection of B. garinii genotypes obtained from the Borrelia MLST public database revealed that: (a) there was little overlap among genotypes from different continents, (b) there was no geographical structuring within Europe, and (c) there was no evident association pattern detectable among B. garinii genotypes from ticks feeding on birds, questing ticks or human isolates. These findings strengthen the hypothesis that the population structure and evolutionary biology of tick‐borne pathogens are shaped by their host associations and the movement patterns of these hosts.

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Section: Multilocus Sequence Typing/multilocus Sequence Analysis (Msupporting

confidence: 85%

Section: Discussionsupporting

confidence: 73%

Host dispersal shapes the population structure of a tick‐borne bacterial pathogen

Norte

Margos²,

Becker

et al. 2020

Molecular Ecology

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“…were found on birds during migration (Hornok et al 2014a, b). In the Danube Delta I. ricinus was dominant, however I. arboricola, I. redikorzevi and H. punctata also occurred (Sándor et al 2014), in Greece I. frontalis, I. acuminatus, H. aegyptium and H. marginatum were recorded (Diakou et al 2016). In Egypt and Cyprus detailed research by Nuorteva and Hoogstraal (1963), Hoogstraal et al (1963Hoogstraal et al ( , 1964, Kaiser et al (1974) indicated that birds are able to transport at least 13 ticks species H. rufipes, A.…”

Section: Discussionmentioning

confidence: 97%

Ticks (Acari: Ixodida) on birds (Aves) migrating through the Polish Baltic coast

et al. 2019

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Seasonal bird (Aves) migration between breeding and wintering areas, often located on different continents, can facilitate the spreading of tick species (Acari: Ixodida) and of tickborne pathogens. The aim of the study was to analyse the occurrence of ticks dispersed by birds migrating along the Polish Baltic coast during spring and autumn migration. Field research was conducted at the bird ringing station in Wicie, located on the middle of the Polish Baltic coast, in 2011 and 2012 during spring and autumn migration. A total of 2657 birds from 45 species was examined. The most common species inspected were European robin (Erithacus rubecula) (63.3%), song thrush (Turdus philomelos) (5.13%), and goldcrest (Regulus regulus) (4.5%). Overall, 3129 ticks belonging to six species were collected: Ixodes ricinus (1650 larvae, 1390 nymphs and 1 male), Ixodes frontalis (20 larvae, 20 nymphs), Ixodes arboricola (35 larvae), Dermacentor reticulatus (1 larva), and Haemaphysalis punctata (1 nymph). Ten larvae and one nymph could only be identified to the genus level Ixodes. Ticks were located on various parts of the head: on the corner of the beak (75.0%), near the eyes (14.6%), on the chin (4.4%), near the ears (4.4%), on the neck (1.1%), and in the beak (0.5%). The overall tick prevalence was 40.5%. The highest prevalence was for bird species feeding on the ground, covering a medium distance to wintering grounds and migrating at night. Statistically significant differences between the number of ticks and the sex of the host species were detected in blackbirds: males carried more parasites than females, both, during spring and autumn migration. The fact that I. ricinus and other ticks parasitize birds migrating through Poland extends the possibility of the spread of tick-borne diseases.

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“…Different sections of the GI tract are labeled above the graphs and include: crop (CR), ceca (CE), cloaca (CL) and feces (F). birds (Keller et al 2011, Wallménius et al 2014, Diakou et al 2016.…”

Section: Proteobacteriamentioning

confidence: 99%

The avian gut microbiota: community, physiology and function in wild birds

Grond

Sandercock

Jumpponen

et al. 2018

Journal of Avian Biology

239

276

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Gastrointestinal microbiota play a vital role in maintaining organismal health, through facilitating nutrient uptake, detoxification and interactions with the immune system. The gastrointestinal microbiota of birds has been poorly studied, especially in wild species under natural conditions. Studies of avian gut microbiota are outnumbered ten to one by studies of mammals, and are dominated by research on domestic poultry. Unlike domestic poultry, wild birds vary widely in environmental preferences, physiology, and life‐history traits, such as migratory behavior and mating systems. Species characteristics result in a vast diversity in gut microbiota and its composition and function. Avian life‐history characteristics pose selection pressures on the gut microbiota, and ultimately affect host health. Here, we review current knowledge of the gut microbiota of wild birds, including: partitioning of digestive function and microbiota among different gastrointestinal compartments, microbial diversity and function in the context of host diet, energetics and behavior, and the intrinsic and extrinsic factors impacting gut microbiota in free‐living birds. The shared core microbiota of wild bird species is dominated by members of four major phyla: Firmicutes, Proteobacteria, Bacteroidetes and Actinobacteria. However, microbial communities varies inter‐ and intra‐specifically, and among gastrointestinal tract sections. To conclude, we identify three key research areas that warrant further investigation: 1) expanding the range of avian host taxa investigated, 2) identifying the function of avian gut microbiota in physiology and immunology, and 3) transitioning from observational studies to experimental manipulations to identify key determinants of wild bird gut microbiota composition.

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Ticks and tick-borne pathogens in wild birds in Greece

Cited by 30 publications

References 47 publications

Host dispersal shapes the population structure of a tick‐borne bacterial pathogen

Host dispersal shapes the population structure of a tick‐borne bacterial pathogen

Ticks (Acari: Ixodida) on birds (Aves) migrating through the Polish Baltic coast

The avian gut microbiota: community, physiology and function in wild birds

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