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Guild Dynamics and Pathogen Interactions in Hyalomma Ticks From Algerian Cattle
Salma Kaoutar Abdelali1, Lynda Aissaoui1, Apolline Maitre2,3,4
1Department of Animal Biology and Physiology, University of Ferhat Abbas, Setif, Algeria.
Transboundary and Emerging Diseases
|April 30, 2025
Summary
Tick-borne pathogens interact within guilds, influenced by environmental factors. Female ticks showed higher infection rates and specific pathogen cooperation, while males exhibited different prevalences, revealing complex ecological dynamics.
Area of Science:
- Veterinary Entomology
- Molecular Ecology
- Pathogen Interactions
Background:
- Ticks transmit diverse pathogens affecting humans and animals, often forming pathogen guilds.
- Understanding pathogen interactions within these guilds is crucial but remains poorly understood.
- Ecological factors are hypothesized to influence pathogen occurrence and interactions.
Purpose of the Study:
- To investigate the influence of abiotic and biotic factors on tick-borne pathogen guild composition and interactions.
- To analyze pathogen-pathogen interaction patterns within *Hyalomma excavatum* ticks.
- To uncover complex interactions and ecological determinants shaping pathogen dynamics.
Main Methods:
- Analysis of high-throughput data from 166 *Hyalomma excavatum* ticks collected from cattle.
- Utilized microfluidic technology for microorganism detection across different seasons.
- Employed network analysis to identify pathogen-pathogen interactions within guilds.
Main Results:
- Female ticks exhibited higher infection rates (63.9%) with pathogens like *Rickettsia slovaca* and *Borrelia afzelii*.
- Male ticks showed a 56.4% infection rate, with *Rickettsia* species being most prevalent.
- Identified positive associations (cooperation) and negative associations (competitive exclusion) among tick-borne pathogens.
Conclusions:
- Ecological determinants significantly influence pathogen association dynamics within tick-borne pathogen guilds.
- Observed variations in interaction patterns highlight the complexity of disease transmission.
- Findings provide insights for developing effective disease control strategies against tick-borne pathogens.
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