Unusual findings on host-tick interactions through carnivore scat analysis

Area of Science:

• Veterinary Entomology
• Wildlife Ecology
• Parasitology

Background:

• Dietary studies of Portuguese carnivores, red fox (Vulpes vulpes) and common genet (Genetta genetta), are crucial for understanding ecosystem dynamics.
• Tick-borne diseases pose a significant threat to wildlife and public health, necessitating research into host-parasite relationships.
• Existing knowledge on tick distribution and host associations in Portugal remains incomplete.

Purpose of the Study:

• To investigate the prevalence and diversity of ticks in the diet of red foxes and common genets in Portugal.
• To identify specific host-tick interactions and expand the understanding of tick distribution patterns.
• To evaluate the utility of carnivore scats as a source of biological information for acarological studies.

Main Methods:

• Analysis of 940 scat samples collected from red foxes and common genets.
• Identification and quantification of ticks found within the scat samples.
• Correlation of tick presence with identified prey remains in the scats to infer host-tick associations.

Main Results:

• A total of 276 ticks were recovered from 940 analyzed scats.
• The prevalence of tick infestation in the analyzed samples was 7.6% for both red foxes and common genets.
• New data on host-tick interactions, including Ixodes acuminatus and its association with the wood mouse, were documented for Portugal.
• An updated tick distribution pattern within the study area was established.

Conclusions:

• Carnivore scats serve as a valuable and previously unrecognized source of biological data for acarological research.
• The study provides novel insights into the host-tick assemblage in Portugal, particularly concerning red foxes and common genets.
• Findings contribute to a better understanding of tick ecology and host-parasite dynamics in Mediterranean ecosystems.