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Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less likely to...

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Echinococcus multilocularis in urban coyotes, Alberta, Canada.

Stefano Catalano1, Manigandan Lejeune, Stefano Liccioli

  • 1University of Calgary, Calgary, Alberta, Canada.

Emerging Infectious Diseases
|September 29, 2012
PubMed
Summary

Echinococcus multilocularis was found in 23 of 91 urban coyotes in Alberta, Canada. This zoonotic parasite poses a public health risk, especially with increasing urbanization of wild canids.

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Area of Science:

  • Veterinary Parasitology
  • Zoonotic Diseases
  • Wildlife Ecology

Background:

  • Echinococcus multilocularis is a significant zoonotic parasite.
  • Wild canids act as definitive hosts for this parasite.
  • Urbanization is increasing the interface between wildlife and human populations.

Purpose of the Study:

  • To determine the prevalence of Echinococcus multilocularis in urban coyotes in Alberta, Canada.
  • To assess the public health implications of Echinococcus multilocularis in urban wildlife.

Main Methods:

  • Necropsy and parasitological examination of coyotes.
  • Geographic data collection for infected animals.

Main Results:

  • Echinococcus multilocularis was detected in 23 out of 91 (25.3%) coyotes sampled in Alberta.
  • Infection was confirmed in coyotes within an urbanized region.

Conclusions:

  • Urban coyotes in Alberta are hosts for Echinococcus multilocularis.
  • The presence of this parasite in urban wildlife highlights a potential public health concern in the region.