A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Does environmental adaptation or dispersal history explain the geographical distribution of Ixodes ricinus and Ixodes persulcatus ticks in Finland?
Tekijät: Kulha Niko, Ruokolainen Kalle, Vesterinen Eero J, Lamppu Maija, Klemola Tero, Sormunen Jani J
Kustantaja: WILEY
Julkaisuvuosi: 2022
Journal: Ecology and Evolution
Tietokannassa oleva lehden nimi: ECOLOGY AND EVOLUTION
Lehden akronyymi: ECOL EVOL
Artikkelin numero: e9538
Vuosikerta: 12
Numero: 12
Sivujen määrä: 17
ISSN: 2045-7758
DOI: https://doi.org/10.1002/ece3.9538
Verkko-osoite: https://doi.org/10.1002/ece3.9538
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/177615095
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.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
