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Summary
Rabies devastated a wolf pack after an infected wolf attacked its packmates. Most infected wolves stayed in familiar territory, suggesting limited contact with other wolf packs, and Arctic foxes were suspected disease vectors.
Area of Science:
- Wildlife disease ecology
- Canine behavior studies
- Arctic ecosystem research
Background:
- Rabies outbreaks can significantly impact wildlife populations.
- Understanding disease transmission dynamics in social animals like wolves is crucial for conservation.
- Arctic foxes are known to carry rabies and can act as vectors.
Purpose of the Study:
- To investigate the impact of a rabies epizootic on a wolf pack.
- To determine the likely source and transmission route of rabies within the pack.
- To assess the spatial behavior of infected wolves during the outbreak.
Main Methods:
- Observation of wolf pack behavior, including an atypical individual.
- Necropsy and laboratory confirmation of rabies in deceased wolves.
- Aerial survey to assess wolf pack distribution and contact with neighboring packs.
- Evaluation of potential disease vectors, specifically Arctic foxes.
Main Results:
- One wolf exhibiting abnormal behavior, later confirmed positive for rabies, was lethally removed.
- Within four weeks, six additional pack members died, with rabies confirmed in three.
- Rabid wolves remained in familiar core territories, indicating limited interaction with outside packs.
- Arctic foxes were suspected as the primary vector due to a regionwide rabies epizootic.
Conclusions:
- Rabies can cause rapid and severe population decline in wolf packs.
- Infected wolves may exhibit altered behavior but tend to remain in familiar areas, limiting external spread.
- Arctic foxes likely played a role in introducing rabies to this wolf pack.