scholarly journals Killing and Caching of an Adult White-tailed Deer, Odocoileus virginianus, by a Single Gray Wolf, Canis lupus

2011 ◽  
Vol 125 (2) ◽  
pp. 162 ◽  
Author(s):  
Michael E. Nelson
Keyword(s):  
Odocoileus Virginianus ◽  
Adult Male ◽  
Canis Lupus ◽  
Gray Wolf ◽  
Recorded Observation

A single Gray Wolf (Canis lupus) killed an adult male White-tailed Deer (Odocoileus virginianus) and cached the intact carcass in 76 cm of snow. The carcass was revisited and entirely consumed between four and seven days later. This is the first recorded observation of a Gray Wolf caching an entire adult deer.

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 Sixty years of White-tailed Deer (Odocoileus virginianus) yarding in a Gray Wolf (Canis lupus)–deer system

2020 ◽  
Vol 133 (4) ◽  
pp. 343-351
Author(s):  
L. David Mech ◽  
Shannon M. Barber-Meyer
Keyword(s):  
Odocoileus Virginianus ◽  
Adult Female ◽  
Canis Lupus ◽  
Selective Advantage ◽  
Spring Migration ◽  
Maximum Distance ◽  
Gray Wolf ◽  
Wolf Population ◽  
Winter Range ◽  
Migration Data

This article synthesizes information from over a six-decade period of studies of White-tailed Deer (Odocoileus virginianus) use of a winter yard and subject to Gray Wolf (Canis lupus) predation in northeastern Minnesota. It also adds spring migration data from 35 adult female deer and fawns studied there during 1998, 1999, 2001, 2014, and 2017. Twenty-nine of these deer migrated in spring a mean distance of 29 km (SE = 4), a maximum distance of 78 km, and at a mean bearing of 83° (SE = 12; range 21–348). These findings are similar to those from 49 deer (both sexes) from the same yard studied during 1974–1984, that migrated a mean distance of 25 km (SE = 1.8) and a mean bearing of 77° ± 4 SE. Between the two periods, the wolf population fluctuated considerably, the winter range of deer in the area where these deer spent summer greatly diminished, and both derechos and fires disturbed the habitat. This study attests to the selective advantage of the migratory tradition of deer in this yard.

scholarly journals White-tailed Deer (Odocoileus virginianus) fawn risk from Gray Wolf (Canis lupus) predation during summer

2016 ◽  
Vol 129 (4) ◽  
pp. 368
Author(s):  
L. David Mech ◽  
Aaron Morris ◽  
Shannon Barber-Meyer
Keyword(s):  
At Risk ◽  
Odocoileus Virginianus ◽  
Canis Lupus ◽  
National Forest ◽  
Gray Wolf ◽  
Gray Wolves ◽  
Risk Of Predation

Little is known about how often various prey animals are at risk of predation by Gray Wolves (Canis lupus). We used a system to monitor the presence during the day of two radio-collared Gray Wolves within 2 km of a radio-collared White-tailed Deer (Odocoileus virginianus) with a fawn or fawns in August 2013 in the Superior National Forest of northeastern Minnesota. We concluded that the fawn or fawns were at risk of predation by at least one wolf at least daily.

scholarly journals Political affiliation predicts public attitudes toward gray wolf ( Canis lupus ) conservation and management

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Lily M. Eeden ◽  
Sergey Rabotyagov ◽  
Morgan Kather ◽  
Carol Bogezi ◽  
Aaron J. Wirsing ◽  
...  
Keyword(s):  
Canis Lupus ◽  
Public Attitudes ◽  
Political Affiliation ◽  
Gray Wolf ◽  
Conservation And Management

scholarly journals Wolf, Canis lupus, Pup Mortality: Interspecific Predation or Non-Parental Infanticide?

2011 ◽  
Vol 125 (2) ◽  
pp. 158 ◽  
Author(s):  
A. David M. Latham ◽  
Stan Boutin
Keyword(s):  
Canis Lupus ◽  
Resource Competition ◽  
The Other ◽  
Gray Wolf ◽  
Gps Collar ◽  
Competition Hypothesis ◽  
Interspecific Predation ◽  
Pup Mortality ◽  
First Time

A breeding male Gray Wolf, Canis lupus, equipped with a GPS collar was documented going to the den site of another Gray Wolf pack. This trip was coincident with an attack on the den of the other pack and the occurrence of a dead and partially consumed Gray Wolf pup at the same location. We present two possible explanations - interspecific predation and non-parental infanticide - to account for this observation. Because the Gray Wolf with the GPS collar and his mate were first-time breeders and were attempting to establish a territory space of their own, we speculate that, based on the available evidence, this observation most likely represents a case of non-parental infanticide that fits the predictions of the resource competition hypothesis.

Oocyte and ovary morphological observation of gray wolf (Canis lupus)

2010 ◽  
Vol 60 (3) ◽  
pp. 249-257
Author(s):  
Xu-Guang Liu ◽  
Zhi-Zhong Zhang ◽  
Yun-Hai Zhang ◽  
Yun-Sheng Li ◽  
Fu-Gui Fang ◽  
...  
Keyword(s):  
Histological Examination ◽  
Reproductive System ◽  
Canis Lupus ◽  
Smooth Surface ◽  
Uterine Horn ◽  
Left Ovary ◽  
Morphological Observation ◽  
Gray Wolf ◽  
Antral Follicles ◽  
The Right

AbstractThe present study was carried out to describe the reproductive system of a single adult female wolf, including the uterine horns, cervix, ovaries and follicles. The cumulus oocytes complexes (COCs) and oocytes were also examined. The results showed that the size of each ovary was about 9 × 6 mm with an average of weight of 461.3 mg. The uterus was Y-shaped, and the length of each uterine horn was 14 cm. The distance from the cervix to the bifurcation of the uterine horns was also 14 cm. The left ovary had two large follicles on the surface with a diameter more than 4 mm, while the right ovary had no protuberant follicles. The ovaries were covered with a lot of fat, and were well developed. The COCs derived from the antral follicles were dark, and the nuded oocytes had a dark cytoplasm. The diameter of the oocytes removed from the antral follicles was 116.8 μm on average. The ovaries had a smooth surface and all the follicles were under the surface except for two big follicles on the left ovary. Histological examination of the ovaries by haematoxylin and eosin staining demonstrated that the primordial, primary, preantral and antral follicles were scattered in the cortex, the medulla was abundant with blood vessels. This study preliminarily reveals the features of the wolf reproductive system and the structure of its oocytes and ovaries, which might be indicative for further study and the protection of the species.

scholarly journals Enhanced Asymptomatic Systemic Infection Caused by Plesiomonas shigelloides in a Captive Gray Wolf (Canis lupus)

2021 ◽  
Vol 8 (11) ◽  
pp. 280
Author(s):  
Kyootae Kim ◽  
Haeseung Lee ◽  
Dongmi Kwak
Keyword(s):  
Canis Lupus ◽  
Rare Case ◽  
Systemic Infection ◽  
Liver Parenchyma ◽  
Nucleotide Sequencing ◽  
Gray Wolf ◽  
Air Bubbles ◽  
Plesiomonas Shigelloides ◽  
Systemic Infections ◽  
Cultured Bacteria

A 7-year-old male gray wolf was found dead at a zoo during exhibition. To determine the cause of death, histological and gross necropsy diagnoses and a molecular analysis were performed. The gross necropsy revealed a swollen abdomen, hemorrhagic exudates around the mouth, splenomegaly, a discolored liver, a congested kidney, hemorrhagic ascites, and dark gray-colored membranes and air bubbles in the fundus of the stomach. Rod-shaped bacteria were found in the liver parenchyma and hemorrhagic ascites using Giemsa staining. The nucleotide sequencing of the cultured bacteria identified the causative agent as Plesiomonas shigelloides, which is rarely responsible for systemic infections. This study describes a rare case and the first reported systemic gastrointestinal infection due to P. shigelloides in a zoo animal.

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