Wolverine (Gulo gulo) Food Habits in Greater Yellowstone

Inman, Robert M.; Packila, Mark L.

doi:10.1674/0003-0031-173.1.156

Cited by 11 publications

(11 citation statements)

References 14 publications

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“…Our observations may also reflect a spurious correlation to another functional process such as den selection, although the similarity between male and female models make this unlikely. Scavenged ungulates comprise the majority of wolverine winter diet in North America (Lofroth et al 2007, Inman and Packila 2015, Scrafford and Boyce 2018 and wolverine presence in our combined and male only models were weakly associated with large ungulates. In the North Columbia Mountains, caribou were an important element of the diet of reproductive females (Lofroth et al 2007), but they did not feature prominently in our female analysis.…”

Section: Foodmentioning

confidence: 69%

Mechanisms influencing the winter distribution of wolverine Gulo gulo luscus in the southern Columbia Mountains, Canada

Kortello¹,

Hausleitner

Mowat

2019

Wildlife Biology

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Section: Foodmentioning

confidence: 69%

Mechanisms influencing the winter distribution of wolverine Gulo gulo luscus in the southern Columbia Mountains, Canada

Kortello¹,

Hausleitner

Mowat

2019

Wildlife Biology

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“…Extent of snow cover detected with low‐altitude aerial photography on 31 May 2016 along flight transects bisecting the home ranges of 4 reproductive female wolverines: ID F1 and ID F2 that denned in the Rocky Mountains near McCall, Idaho, USA, in 2010 (F1 and F2, respectively, in Heinemeyer et al ) and MT F105 and MT F121 that denned near Ennis, Montana, USA, in 2004 and 2007, respectively (F105 and F121, respectively, in Inman et al ). We divided each of the 4 transects into 10 equal segments and categorized snow in each segment as one of the following: none, occasional, occasional–low, low, low–moderate, moderate, moderate–heavy, and heavy.…”

Section: Resultsmentioning

confidence: 99%

“…The 2 Idaho females (ID F1 and ID F2) denned in the Payette National Forest in 2010 (F1 and F2 in Heinemeyer et al ). The 2 Montana females denned in the Madison (MT F105) and Gravelly (MT F121) Mountains in 2004 and 2007, respectively (F105 and F121 in Inman et al ). We established flight lines along transects through the long axis of these home ranges, positioning transects through or close to where den sites were located in those years.…”

Section: Methodsmentioning

confidence: 99%

Detecting snow at the den‐site scale in wolverine denning habitat

Magoun¹,

Robards

Packila³

et al. 2017

Wildl. Soc. Bull.

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The relationship of wolverines (Gulo gulo) to persistent spring snow (PSS) may be obligate at the den‐site scale but this relationship has yet to be examined at this scale. Our objective was to detect snow at the den‐site scale in late May using low‐altitude aerial photography in wolverine denning habitat both in the Rocky Mountains of western United States and northwestern Alaska, USA. In the Rocky Mountains, we detected snow on 31 May 2016 in low to heavy categories in 82% of 40 transect segments flown through home ranges of 4 reproductive female wolverines that had denned in Idaho and Montana, USA, prior to our study. In the Alaska study area, we detected snow on 29 May 2016 at 4 den sites of reproductive female wolverines that denned in 2016. By then, snow remained only in occasional, widely scattered patches. Remnant snowdrifts remained at all 4 den sites. High‐latitude tundra habitats in Alaska may lose PSS sooner than montane habitats at the southern extent of wolverine distribution. To manage wolverines and their habitat and incorporate PSS in models of future wolverine habitat, we must understand the relationship of wolverines to snow and measure PSS at an appropriate resolution and scale that is biologically meaningful for the species. © 2017 The Wildlife Society.

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“…Wolverines both hunt and scavenge and have the capacity to quickly cache parts of ungulate carcasses in boulder fields, snowbanks, or bogs for later use. Wolverine diet has been studied to different degrees over large parts of its range, showing that ungulates are consistently the most important source of food especially in winter (Landa et al 1997, Lofroth et al 2007, van Dijk et al 2008, Dalerum et al 2009, inman et al 2012, Koskela et al 2013, inman and Packila 2015, with a potential to affect reproductive output (Rauset et al 2015). However, little is known about the relative contribution of predation vs. scavenging to their ungulate diet (but see Lofroth et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Predation or Scavenging? Prey Body Condition Influences Decision‐Making in a Facultative Predator, the Wolverine

Mattisson¹,

Rauset²,

Oddén³

et al. 2017

Bulletin Ecologic Soc America

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What determines whether a predator scavenges or kills its own prey? Using data on wolverines ( Gulo gulo ) in Scandinavia, we studied variation in diet and feeding strategies along a gradient of environmental productivity, seasonality, density, and body mass of their main prey, semidomestic reindeer ( Rangifer tarandus ). Our results suggest that wolverine feeding strategies are flexible and influenced by seasonally dependent responses to prey body condition in combination with carrion supply. Predation was more pronounced in summer, when vulnerable reindeer calves are abundant, and individual kill rates were negatively related to local reindeer body mass. In winter, the probability of scavenging increased with decreasing reindeer body mass, likely as a response to increased carrion supply.All photographs in this section are provided by authors of papers in our scientific journals and are used by permission. All copyrights reserved.

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Wolverine (Gulo gulo) Food Habits in Greater Yellowstone

Cited by 11 publications

References 14 publications

Mechanisms influencing the winter distribution of wolverine Gulo gulo luscus in the southern Columbia Mountains, Canada

Mechanisms influencing the winter distribution of wolverine Gulo gulo luscus in the southern Columbia Mountains, Canada

Detecting snow at the den‐site scale in wolverine denning habitat

Predation or Scavenging? Prey Body Condition Influences Decision‐Making in a Facultative Predator, the Wolverine

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