American Dog Ticks (Dermacentor variabilis) as Biological Indicators of an Association between the Enteric Bacterium Moellerella wisconsensis and Striped Skunks (Mephitis mephitis) in Southwestern Manitoba, Canada

2020 ◽  
Vol 56 (4) ◽  
Author(s):  
Neil B. Chilton ◽  
Shaun J. Dergousoff ◽  
Veronica Brzezowska ◽  
Chantel N. Trost ◽  
Diana R. Dunlop
2006 ◽  
Vol 120 (3) ◽  
pp. 342
Author(s):  
Serge Larivière ◽  
Lyle R. Walton ◽  
François Messier

Striped Skunks (Mephitis mephitis) are important predators of duck eggs in the Canadian prairies. We estimated the impact of individual Striped Skunks on duck nests by intensive observations of foraging movements and depredation of duck nests in southern Saskatchewan, 1993-1994. Nightly, skunk movements were variable (range 0-20 km per night), and did not differ among seasons for females, or between males and females during the parturition/rearing season. Overall, nightly movement of Striped Skunks averaged 7.4 km for females (SD = 5.9 km, n = 20 females) and 6.7 km for males (SD = 3.2 km, n = 5 males). During 1,873 h of radio-tracking, we observed depredation of 10 duck nests by 8 skunks (7 F, 1 M). Using our observed estimate of one depredation for every 187 h, and averaged nightly activity of 8-10 h per night, we estimated that individual skunks find one duck nest every 19-23 nights. Thus, during the 60-day nesting season for ducks (mid-May to mid-July), individual skunks probably find 2-3 duck nests. These observations reinforce the growing evidence that, at normal duck nest densities (<2.5 nests/ha), depredation of eggs by Striped Skunks is opportunistic, and the impact of Striped Skunks on duck nests is a direct function of Striped Skunk abundance.


2002 ◽  
Vol 38 (3) ◽  
pp. 641-643 ◽  
Author(s):  
Yeen Ten Hwang ◽  
G. Wobeser ◽  
S. Larivière ◽  
F. Messier

2019 ◽  
Vol 22 (3) ◽  
pp. 539-552
Author(s):  
Anna L. Schneider ◽  
Amy T. Gilbert ◽  
W. David Walter ◽  
Gregory S. Vandeberg ◽  
Jason R. Boulanger

Behaviour ◽  
1991 ◽  
Vol 119 (3-4) ◽  
pp. 267-284 ◽  
Author(s):  
Vilis O. Nams

AbstractStriped skunks (Mephitis mephitis) which had been raised in captivity can increase their reaction distance to the smell of a given food. This reaction distance decreases after they find other types of foods, using either sound or smell. This decrease could be a result of skunks increasing preference for specific food, or shifting attention onto the smell of specific food. However, other experiments showed that skunks do not change prey preference. Therefore the decrease in reaction distance is likely due to skunks shifting attention to the smell of specific food. I suggest that this is the olfactory analogue to visual search images-i.e. olfactory search images.


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