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Sarcoptic mange in the Scandinavian wolf Canis lupus population

Fuchs, Boris; Zimmermann, Barbara; Wabakken, Petter; Bornstein, Set; Månsson, Johan; Evans, Alina; Liberg, Olof; Sand, Håkan; Kindberg, Jonas; Ågren, Erik O.; Arnemo, Jon Martin
Journal article, Peer reviewed
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http://hdl.handle.net/11250/2418894
Issue date
2016
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  • Artikkel - fagfellevurdert vitenskapelig / Articles - peer-reviewed [712]
Original version
Fuchs B, Zimmermann B, Wabakken P, et al. Sarcoptic mange in the Scandinavian wolf Canis lupus population. BMC Veterinary Research. 2016;12:156. doi:10.1186/s12917-016-0780-y.   10.1186/s12917-016-0780-y
Abstract
Background:

Sarcoptic mange, a parasitic disease caused by the mite

Sarcoptes scabiei,

is regularly reported on

wolves

Canis lupus

in Scandinavia. We describe the distribution and transmission of this parasite within the small

but recovering wolf population by analysing 269 necropsy reports and performing a serological survey on 198

serum samples collected from free-ranging wolves between 1998 and 2013.

Results:

The serological survey among 145 individual captured Scandinavian wolves (53 recaptures) shows a

consistent presence of antibodies against sarcoptic mange. Seropositivity among all captured wolves was 10.1 %

(

CI.

6.4 %

–

15.1 %). Sarcoptic mange-related mortality reported at necropsy was 5.6 % and due to secondary causes,

predominantly starvation. In the southern range of the population, seroprevalence was higher, consistent with

higher red fox densities. Female wolves had a lower probability of being seropositive than males, but for both

sexes the probability increased with pack size. Recaptured individuals changing from seropositive to seronegative

suggest recovery from sarcoptic mange. The lack of seropositive pups (8

–

10 months,

N

= 56) and the occurrence of

seropositive and seronegative individuals in the same pack indicates interspecific transmission of

S. scabiei

into this

wolf population.

Conclusions:

We consider sarcoptic mange to have little effect on the recovery of the Scandinavian wolf

population. Heterogenic infection patterns on the pack level in combination with the importance of individual-

based factors (sex, pack size) and the north

–

south gradient for seroprevalence suggests low probability of

wolf-to-wolf transmission of

S. scabiei

in Scandinavia.
Publisher
PubMed Central
Journal
BMC Veterinary Research

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