SHORT NOTE
Winter diet of wolf (Canis lupus) after the outbreak of African swine fever and under the severely reduced densities of wild boar (Sus scrofa)
 
 
More details
Hide details
1
Tartu University, Department of Zoology. Vanemuise Str. 46, 51014 Tartu, Estonia
 
 
Online publication date: 2020-09-03
 
 
Publication date: 2020-09-03
 
 
Corresponding author
Harri Valdmann   

Tartu University
 
 
Hystrix It. J. Mamm. 2020;31(2):154-156
 
KEYWORDS
TOPICS
ABSTRACT
The outbreak of the African swine fever (ASF) in Estonia in 2014 resulted in heavy hunting pressure on wild boar, issued by authorities to stop further spread of the virus. As a consequence, local wolf prey base changed abruptly. To investigate the effects of this change to wolf diet, we collected 121 wolf scats from November to April in 2017-2018 from five Estonian counties and compared the results with the wolf dietary data from 1998. To eliminate possible dog scats from the material collected from areas close to settlements, genetic analysis was used. We found that ungulates still formed the bulk of the wolf diet, however, the occurrence of moose, wild boar, small rodents and hares has dropped considerably. The proportion of the roe deer and mammalian predators has increased from 51% to 55% and 4% to 10%, respectively. Moreover, plants, being totally absent in the previous study, were found in 25% of scats, in many cases representing the only food item. Food niche breadth has widened from 1.54 to 2.3. While roe deer was found to be a highly preferred, moose was still an avoided prey species.
ACKNOWLEDGEMENTS
We thank Andrus Dräbtsinski for his help.
FUNDING
This work was supported by grant (PLTOM20905) of the Institute of Ecology and Earth Sciences, University of Tartu, Estonia.
eISSN:1825-5272
ISSN:0394-1914
Journals System - logo
Scroll to top