Adaptive Features of the Biology of Closely Related Species of Ixodid Ticks That Determine Their Distribution (Illustrated on the Example of the Taiga Tick Ixodes persulcatus Sch. 1930 and the Castor Bean Tick Ixodes ricinus L. 1758)

Éi, Korenberg; Сироткин, М. Б.; Kovalevskii, Yu. V.

doi:10.1134/s2079086421060050

Cited by 6 publications

(9 citation statements)

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“…Contemporary prevailing tick species, including Ixodes persulcatus Sch. 1930, probably occurred as far back as at the end of Pliocene or the beginning of Holocene [5]. Such long evolution helped ticks adapt to a lot of territories with variable natural and climatic conditions and to parasitize on practically all orders of land mammals as well as on many species of birds and reptiles.…”

Section: Results Territorial and Spatial Distribution Of People Bitte...mentioning

confidence: 99%

“…Such long evolution helped ticks adapt to a lot of territories with variable natural and climatic conditions and to parasitize on practically all orders of land mammals as well as on many species of birds and reptiles. They usually feed on mammals or birds that are the most widely spread in a given ecosystem 5 .…”

Section: Results Territorial and Spatial Distribution Of People Bitte...mentioning

confidence: 99%

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Aanalyzing risks of incidence of tick-borne encephalitis in areas with different climatic and geographical conditions

Токаревич¹,

Тронин²,

Бузинов³

et al. 2021

Health Risk Analysis

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Ticks are natural reservoirs and vectors of a virus that is an infectious agent of tick-borne encephalitis, a communicable disease with great medical and social significance. Tick-borne encephalitis (TBE) is widely spread in Arkhangelsk region (AR) located in the Arctic zone in Russia where substantial climatic changes are taking place at the moment. Our research involved examining spatial and temporal distribution of numbers of people bitten by ticks, a number of people bitten by ticks per 100 thousand, a number of TBE cases and TBE incidence in districts and settlements in AR. We calculated relative risks of TBE incidence among people bitten by ticks in AR from 1980 to 2019. We analyzed dynamics of indicators showing numbers of people bitten by ticks per 100 thousand and TBE incidence among people living in Arkhangelsk region. The analysis revealed that a number of bitten people grew slowly in 1980–1990, then there was an exponential growth in 1990–2010, and then the trend stabilized in 2010–2019. Dynamics of TBE incidence was completely in line with changes in number of bitten people up to 2014 but there was a substantial drop in TBE incidence after that. Spatial distribution of numbers of bitten people and TBE incidence revealed that average number of bitten people amounted to 25.1 per 100 thousand in the northern districts in 1980–2019 and was statistically significantly lower than in the central and southern districts (р < 0.001). Average long-term incidence was the highest (7.9 per 100 thousand) in the southern districts in comparison with the central (3.0 per 100 thousand; р<0.001) and northern ones (0.7 per 100 thousand; р<0.001). Maximum relative risks of TBE incidence was detected in the southern districts in 1990–1999 (38.8) in comparison with the northern ones. We made an assumption about probable reasons for declining TBE incidence in Arkhangelsk region detected over the last years given the growing numbers of bitten people.

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Section: Results Territorial and Spatial Distribution Of People Bitte...mentioning

confidence: 99%

Section: Results Territorial and Spatial Distribution Of People Bitte...mentioning

confidence: 99%

Aanalyzing risks of incidence of tick-borne encephalitis in areas with different climatic and geographical conditions

Токаревич¹,

Тронин²,

Бузинов³

et al. 2021

Health Risk Analysis

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“…Most environmental variables analyzed here did not significantly differ between sites where either I. ricinus or I. persulcatus were observed. For example, winter conditions were similar in locations where the two species were observed, despite the reportedly better cold adaptation of I. persulcatus compared with I. ricinus (Korenberg et al, 2021 ). I. ricinus and I. persulcatus are closely related species with broad environmental niches (Sirotkin & Korenberg, 2018 ).…”

Section: Discussionmentioning

confidence: 96%

“…In Eurasia, I. persulcatus has a more continental distribution than I. ricinus (Kovalev et al, 2015; I. persulcatus Livanova et al, 2016). Therefore, it seems plausible that it is better adapted to dry and cold climates compared with I. ricinus (Korenberg et al, 2021). However, this climatic hypothesis is hardly the sole explanation for the southernmost distribution limit of I. persulcatus in Finland, as the species occurs and even dominates in certain regions of neighboring Estonia (Katargina et al, 2015) and Latvia (Capligina et al, 2020) where temperature sums, vegetation periods and amounts of precipitation are comparable to those in southern Finland.…”

Section: Introductionmentioning

confidence: 99%

Does environmental adaptation or dispersal history explain the geographical distribution of Ixodes ricinus and Ixodes persulcatus ticks in Finland?

Kulha

Ruokolainen

Vesterinen

et al. 2022

Ecology and Evolution

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In Finland, the distribution area of the taiga tick, Ixodes persulcatus (Schulze, 1930), is nested within a broader area of distribution of a congeneric species, the sheep tick, Ixodes ricinus (Linnaeus, 1758) (Acari: Ixodidae). We assess whether distinct environmental adaptations or dispersal history provides a more parsimonious explanation for the differences in the distributions of the two common and medically important ixodids in Finland. We used an innovative spatially constrained randomization procedure to analyze whether crowdsourced occurrence data points of the two tick species had statistically different associations with any of the 28 environmental variables. Using points of presence in a region of species co‐occurrence, we built Maxent models to examine whether environmental factors or dispersal history could explain the absence of I. persulcatus in a part of the range of I. ricinus in Finland. Five environmental variables—number of inhabitants, road length, elevation above sea level, proportion of barren bedrock and boulders, and proportion of unsorted glacial deposits—were significant at p ≤ .05, indicating greater between‐species difference in original than in the randomized data. Of these variables, only the optimum value for unsorted glacial deposits was higher for I. persulcatus than for I. ricinus . Maxent models also predicted high relative habitat suitability (suitability >80%) for I. persulcatus south of its current, sharply bounded distribution range, suggesting that the species has not fulfilled its distribution potential in Finland. The two most common and medically relevant ixodids in Finland may colonize habitats with different environmental conditions. On the contrary, the recent establishment and ongoing dispersion of I. persulcatus in Fennoscandia rather than environmental conditions cause the southernmost distribution limit of the species in Finland.

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“…Moreover, I. persulcatus has a behavioral diapause of non-engorged adult ticks, which is not connected with photoperiodic regulation ( Korenberg et al 2021 ). But as the studies in the Kirov Oblast and Udmurt Republic showed, in more warmer areas, an increased proportion of engorged larvae and nymphs develop without the diapause and the reason for this is the early activation and, as a result, their mass feeding on hosts in the first half of summer.…”

Section: Systematicsmentioning

confidence: 99%

Checklist of hosts, illustrated geographical range, and ecology of tick species from the genus Ixodes (Acari, Ixodidae) in Russia and other post-Soviet countries

Fedorov,

Hornok

2024

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Hard ticks (Acari: Ixodidae) are the economically and ecologically most important blood-sucking arthropod vectors that can transmit disease agents under temperate climate. In this group, the highest number of species (currently nearing 270) belongs to the genus Ixodes. For this review, more than 400 papers related to this genus in the context of Russia were checked for data on the host records, locations of collection, as well as ecology of assigned tick species. This monograph compensates for the lack of a similarly comprehensive English-language overview of Ixodes species in the region of Russia for nearly half century, and also makes a large set of data easily available for international readers, which is especially important if the original source is difficult to access from outside this country. In addition, the data from a significant number of papers on this topic available only in the Russian language are made accessible through this work.

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Adaptive Features of the Biology of Closely Related Species of Ixodid Ticks That Determine Their Distribution (Illustrated on the Example of the Taiga Tick Ixodes persulcatus Sch. 1930 and the Castor Bean Tick Ixodes ricinus L. 1758)

Cited by 6 publications

References 50 publications

Aanalyzing risks of incidence of tick-borne encephalitis in areas with different climatic and geographical conditions

Aanalyzing risks of incidence of tick-borne encephalitis in areas with different climatic and geographical conditions

Does environmental adaptation or dispersal history explain the geographical distribution of Ixodes ricinus and Ixodes persulcatus ticks in Finland?

Checklist of hosts, illustrated geographical range, and ecology of tick species from the genus Ixodes (Acari, Ixodidae) in Russia and other post-Soviet countries

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