Tick species diversity and potential distribution alternation of dominant ticks under different climate scenarios in Xinjiang, China

PLoS Negl Trop Dis. 2024 Apr 29;18(4):e0012108. doi: 10.1371/journal.pntd.0012108. eCollection 2024 Apr.

Abstract

Ticks are a hematophagous parasite and a vector of pathogens for numerous human and animal diseases of significant importance. The expansion of tick distribution and the increased risk of tick-borne diseases due to global climate change necessitates further study of the spatial distribution trend of ticks and their potential influencing factors. This study constructed a dataset of tick species distribution in Xinjiang for 60 years based on literature database retrieval and historical data collection (January 1963-January 2023). The distribution data were extracted, corrected, and deduplicated. The dominant tick species were selected for analysis using the MaxEnt model to assess their potential distribution in different periods under the current and BCC-CSM2.MR mode scenarios. The results indicated that there are eight genera and 48 species of ticks in 108 cities and counties of Xinjiang, with Hyalomma asiaticum, Rhipicephalus turanicus, Dermacentor marginatus, and Haemaphysalis punctatus being the top four dominant species. The MaxEnt model analysis revealed that the suitability areas of the four dominant ticks were mainly distributed in the north of Xinjiang, in areas such as Altay and Tacheng Prefecture. Over the next four periods, the medium and high suitable areas within the potential distribution range of the four tick species will expand towards the northwest. Additionally, new suitability areas will emerge in Altay, Changji Hui Autonomous Prefecture, and other local areas. The 60-year tick dataset in this study provides a map of preliminary tick distribution in Xinjiang, with a diverse array of tick species and distribution patterns throughout the area. In addition, the MaxEnt model revealed the spatial change characteristics and future distribution trend of ticks in Xinjiang, which can provide an instrumental data reference for tick monitoring and tick-borne disease risk prediction not only in the region but also in other countries participating in the Belt and Road Initiative.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animal Distribution
  • Animals
  • Biodiversity*
  • China / epidemiology
  • Climate
  • Climate Change*
  • Humans
  • Tick-Borne Diseases / epidemiology
  • Ticks* / classification

Grants and funding

This work was supported by the Inner Mongolia Autonomous Region Science and Technology leading talent team: Zoonotic disease prevention and Control Technology Innovation team (2022SLJRC0023 to WH); Key Technology Project of Inner Mongolia Science and Technology Department (2021GG0171 to WH); State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock (2020ZD0008 to WH); Study on pathogen spectrum, temporal and spatial distribution and transmission features of the important emerging and re-emerging zoonosis in Inner Mongolia Autonomous Region (U22A20526 to WH) National Parasitic Resources Center (NPRC-2019-194-30 to WH). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.