Seasonal Cycles in Hematology and Body Mass in Free-Ranging Gray Wolves (Canis lupus) from Northeastern Minnesota, USA

2020 ◽  
Vol 56 (1) ◽  
pp. 179
Author(s):  
L. David Mech ◽  
Deborah A. Buhl
Keyword(s):  
Body Mass ◽  
Canis Lupus ◽  
Seasonal Cycles ◽  
Gray Wolves ◽  
Free Ranging

scholarly journals Prolonged Intensive Dominance Behavior Between Gray Wolves, Canis lupus

2010 ◽  
Vol 124 (3) ◽  
pp. 215 ◽  
Author(s):  
L. David Mech ◽  
H. Dean Cluff
Keyword(s):  
Adult Male ◽  
Canis Lupus ◽  
High Arctic ◽  
Gray Wolf ◽  
Dominance Behavior ◽  
Gray Wolves ◽  
Free Ranging

Dominance is one of the most pervasive and important behaviors among wolves in a pack, yet its significance in free-ranging packs has been little studied. Insights into a behavior can often be gained by examining unusual examples of it. In the High Arctic near Eureka, Nunavut, Canada, we videotaped and described an unusually prolonged and intensive behavioral bout between an adult male Gray Wolf (Canis lupus) and a male member of his pack, thought to be a maturing son. With tail raised, the adult approached a male pack mate about 50 m from us and pinned and straddled this packmate repeatedly over 6.5 minutes, longer than we had ever seen in over 50 years of studying wolves. We interpreted this behavior as an extreme example of an adult wolf harassing a maturing offspring, perhaps in prelude to the offspring's dispersal.

scholarly journals Evaluation of Medetomidine-Ketamine and Atipamezole for Reversible Anesthesia of Free-ranging Gray Wolves (Canis lupus)

2013 ◽  
Vol 49 (2) ◽  
pp. 403-407 ◽  
Author(s):  
Jon M. Arnemo ◽  
Alina L. Evans ◽  
Per Ahlqvist ◽  
Peter Segerström ◽  
Olof Liberg
Keyword(s):  
Canis Lupus ◽  
Gray Wolves ◽  
Free Ranging

Assessing Lead Exposure in Free-Ranging Gray Wolves (Canis lupus) in Minnesota, USA

2021 ◽  
Vol 57 (4) ◽  
Author(s):  
Janetta Kelly ◽  
Michelle Carstensen ◽  
Erik C. Hildebrand ◽  
Lindsey Long
Keyword(s):  
Lead Exposure ◽  
Canis Lupus ◽  
Gray Wolves ◽  
Free Ranging

Body composition of free-ranging wolves (Canis lupus)

2013 ◽  
Vol 91 (1) ◽  
pp. 1-6 ◽  
Author(s):  
G.V. Hilderbrand ◽  
H.N. Golden
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Body Fat ◽  
Lean Mass ◽  
Canis Lupus ◽  
Energy Content ◽  
Body Fat Content ◽  
Males And Females ◽  
Free Ranging ◽  
Water Dilution

We used deuterium water dilution to estimate body composition of free-ranging wolves (Canis lupus L., 1758) in the Nelchina Basin, Alaska. Body mass differed between sexes throughout the year but did not vary within sex. Mean fat mass and mean energy content were highest in both sexes in the spring. Mean lean mass was lowest in both sexes in the spring. Body mass and lean body mass were positively related to animal age in both males and females up to age 6–8 years. There was no relationship between body fat content and animal age in either sex except in older animals. Thus, growth beyond age 2 consists primarily of lean mass. Body mass of reproductively active females was greater than nonreproductively active females in the spring but not in summer or fall. Deuterium should be allowed to circulate in the wolf for at least 120 min to ensure complete equilibration regardless of season, sex, age, or reproductive status.

scholarly journals A SEROSURVEY OF DISEASES OF FREE-RANGING GRAY WOLVES (CANIS LUPUS) IN MINNESOTA, USA

2017 ◽  
Vol 53 (3) ◽  
pp. 459
Author(s):  
Michelle Carstensen ◽  
John H. Giudice ◽  
Erik C. Hildebrand ◽  
J. P. Dubey ◽  
John Erb ◽  
...  
Keyword(s):  
Canis Lupus ◽  
Gray Wolves ◽  
Free Ranging

Effects of fasting and refeeding on body composition of captive gray wolves (Canis lupus)

1997 ◽  
Vol 75 (9) ◽  
pp. 1549-1552 ◽  
Author(s):  
T. J. Kreeger ◽  
G. D. DelGiudice ◽  
L. D. Mech
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Canis Lupus ◽  
Tritiated Water ◽  
Base Line ◽  
Prolonged Fasting ◽  
Blood Samples ◽  
Gray Wolves ◽  
Fasting And Refeeding ◽  
Water Dilution

We examined the effects of fasting and refeeding on body composition in 9 captive adult gray wolves, Canis lupus (6 males, 3 females), during May–June 1995. Body composition was estimated by the technique of tritiated water dilution. Wolves were immobilized and weighed, base-line blood samples were taken, tritiated water was injected, and additional blood samples were taken before fasting, after 10 d of fasting, and again after 2 d of refeeding. Male wolves lost 8% (P = 0.0001) and females lost 7% body mass (P = 0.01) during the 10 d. Males lost 54% of this mass in water, 28% in fat, and 18% in protein/ash; females lost 58% in water, 20% in fat, and 22% in protein/ash. Upon refeeding, male wolves consumed an average of 6.8 kg (15.3% body mass) of deer meat per day and females consumed 6.4 kg (18.7% body mass). All wolves regained their initial mass. Males regained 24% of this mass in water, 70% in fat, and 6% in protein/ash; females regained 35% in water, 51% in fat, and 14% in protein/ash. This study provided evidence that after prolonged fasting, captive wolves could quickly and efficiently regain lost body mass after refeeding.

A first genetic assessment of the newly introduced Isle Royale gray wolves (Canis lupus)

2021 ◽  
Author(s):  
Samuel D. Hervey ◽  
Linda Y. Rutledge ◽  
Brent R. Patterson ◽  
Mark C. Romanski ◽  
John A. Vucetich ◽  
...  
Keyword(s):  
Canis Lupus ◽  
Isle Royale ◽  
Gray Wolves ◽  
Genetic Assessment
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