Toxoplasma gondii infection in ticks infesting migratory birds: the blackbird (Turdus merula) and the song thrush (Turdus philomelos)

Gryczyńska, Alicja; Polaczyk, Justyna; Welc-Falęciak, Renata

doi:10.1007/s10493-023-00878-0

Cited by 2 publications

(1 citation statement)

References 39 publications

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“…All intermediate hosts of T. gondii may pose a blood source for all tick stages that may be involved in spreading of this protozoan in wide range of species (Ben-Harari 2019). The presence of T. gondii in I. ricinus ticks (mainly adults and nymphs) has been con rmed (Adamska and Skotarczak 2017; Asman et al 2015Asman et al , 2017Gryczyńska et al 2024;Kocoń et al 2020;Sroka et al 2003Sroka et al , 2008Sroka et al , 2009 as well as transmission of T. gondii by I. ricinus ticks was demonstrated experimentally (Deryło et al 1978;Sroka et al 2008). Other studies revealed the presence of T. gondii in following ticks species: Ixodes amblyomma, I. turdus, Dermacentor reticulatus, Haemaphysalis longicornis, H. ava, Amblyomma cajennense and Rhipicephalus spp., or suggest the possibility of T. gondii transmission by these species (Ben-Harari 2019; T. gondii species has been divided with the use of genotyping methods into three clonal lineages: type I, type II and type III and the genome-wide polymorphism rate between them has been estimated to be approximately 1%.…”

Section: Introductionmentioning

confidence: 93%

Prevalence and genotyping of Toxoplasma gondii in questing Ixodes ricinus ticks from forest areas of Northern Poland

Adamska

2024

Preprint

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Toxoplasma gondii occurs in a wide range of intermediate hosts whose blood may be a source of infection for ticks. There are few studies on the involvement of ticks in T. gondii life cycle and this one includes the largest number and all stages of Ixodes ricinus collected from the widest area, covering seven recreational localities within a forest biotope in Northern Poland. The aim of this study was to determine the prevalence of T. gondii DNA in collected 2144 questing ticks to establish if they may be involved in T. gondii transmission. The aim was also genotyping of detected T. gondii as knowledge about its genotypes occurring in European ticks is insufficient. The next goal was detection of ticks coinfection with T. gondii and Borreliaceae, as all ticks examined in this study have previously been tested for the presence of Borreliaceae DNA. Nested PCR and sequencing of the obtained B1 gene fragment were conducted. T. gondii DNA was detected in 0.9% of all ticks (1.1% of nymphs, 0.7% of larvae). The presence of T. gondii in unfed larvae and nymphs may indicate the possibility of its transovarial and transstadial transmission. Prevalence of T. gondii DNA in ticks collected from individual sites was focal (0-4.3%) and seems to be dependent on local conditions. Among all examined ticks, 0.3% were coinfected with T. gondii and Borreliella spp. vs. 0.6% of specimens with T. gondii single infection. The obtained B1 sequences showed the greatest similarity (99.71–100%) to the sequence representing type III.

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Section: Introductionmentioning

confidence: 93%

Prevalence and genotyping of Toxoplasma gondii in questing Ixodes ricinus ticks from forest areas of Northern Poland

Adamska

2024

Preprint

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Prevalence and genotyping of Toxoplasma gondii in questing Ixodes ricinus ticks from forest areas of Northern Poland

Adamska

2024

Exp Appl Acarol

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Toxoplasma gondii occurs in a wide range of intermediate hosts, whose blood may be a meal for different tick species. A few studies have examined the role of ticks in the life cycle of T. gondii. This one includes the largest number and all stages of Ixodes ricinus collected from the widest area, covering seven recreational localities within a forest biotope in Northern Poland. This study aimed to determine the prevalence of T. gondii DNA in 2144 collected questing ticks to establish whether they may be involved in T. gondii life cycle. The additional goal was to genotype the detected T. gondii, as knowledge about its genotypes occurring in European ticks is insufficient. A further purpose was to detect coinfection with T. gondii and Borreliaceae in the collected ticks, as all of them have previously been tested for the presence of bacteria DNA. Nested PCR and sequencing of the obtained B1 gene fragment were conducted. T. gondii DNA was detected in 0.9% of all ticks (1.1% of nymphs and 0.7% of larvae). The presence of T. gondii in unfed larvae and nymphs may indicate the possibility of its vertical transmission. The prevalence of T. gondii DNA in ticks collected from individual sites was focal (0-4.3%) and seems to depend on local climatic conditions. Among all examined ticks, 0.3% were coinfected with T. gondii and Borreliella spp., vs. 0.6% of specimens with a single T. gondii infection. The obtained B1 sequences showed the greatest similarity (99.71–100%) to the sequence representing type III.

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Toxoplasma gondii infection in ticks infesting migratory birds: the blackbird (Turdus merula) and the song thrush (Turdus philomelos)

Cited by 2 publications

References 39 publications

Prevalence and genotyping of Toxoplasma gondii in questing Ixodes ricinus ticks from forest areas of Northern Poland

Prevalence and genotyping of Toxoplasma gondii in questing Ixodes ricinus ticks from forest areas of Northern Poland

Prevalence and genotyping of Toxoplasma gondii in questing Ixodes ricinus ticks from forest areas of Northern Poland

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