Brain, Craniofacial, and Dental Lesions of a Free-ranging Gray Wolf (Canis lupus) Implicated in a Human Attack in Minnesota, USA

2016 ◽  
Vol 52 (1) ◽  
pp. 131-137 ◽  
Author(s):  
Marc Schwabenlander ◽  
Kevin Stepaniuk ◽  
Michelle Carstensen ◽  
Aníbal G. Armién
Keyword(s):  
Canis Lupus ◽  
Gray Wolf ◽  
Free Ranging ◽  
Dental Lesions

scholarly journals DISEASES AND MORTALITY IN FREE-RANGING BROWN BEAR (URSUS ARCTOS), GRAY WOLF (CANIS LUPUS), AND WOLVERINE (GULO GULO) IN SWEDEN

2005 ◽  
Vol 41 (2) ◽  
pp. 298-303 ◽  
Author(s):  
Torsten Mörner ◽  
Hanna Eriksson ◽  
Caroline Bröjer ◽  
Kristina Nilsson ◽  
Henrik Uhlhorn ◽  
...  
Keyword(s):  
Canis Lupus ◽  
Ursus Arctos ◽  
Brown Bear ◽  
Gray Wolf ◽  
Gulo Gulo ◽  
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 Extinguishing a Learned Response in a Free-ranging Gray Wolf (Canis lupus)

2017 ◽  
Vol 131 (1) ◽  
pp. 23-25 ◽  
Author(s):  
L. David Mech
Keyword(s):  
Canis Lupus ◽  
Food Source ◽  
Ellesmere Island ◽  
Gray Wolf ◽  
Learning Behaviour ◽  
Human Presence ◽  
Experimental Feeding ◽  
Dry Soil ◽  
Free Ranging ◽  
Insight Into

A free-ranging Gray Wolf (Canis lupus), habituated to human presence (the author) on Ellesmere Island, Canada, learned to anticipate experimental feeding by a human, became impatient, persistent, and bold and exhibited stalking behaviour toward the food source. Only after the author offered the wolf about 90 clumps of dry soil over a period of 45 minutes in three bouts, did the wolf give up this behaviour. To my knowledge, this is the first example of extinguishing a learned response in a free-ranging wolf and provides new insight into the learning behaviour of such animals.

scholarly journals Recent occurrences of wild-origin wolves (Canis spp.) in Canada south of the St. Lawrence River revealed by stable isotope and genetic analysis

2016 ◽  
Vol 129 (4) ◽  
pp. 386
Author(s):  
Donald F. McAlpine ◽  
David X. Soto ◽  
Linda Y. Rutledge ◽  
Tyler J. Wheeldon ◽  
Bradley N. White ◽  
...  
Keyword(s):  
New Brunswick ◽  
Canis Lupus ◽  
Stable Carbon Isotope ◽  
The United States ◽  
Gray Wolf ◽  
Microsatellite Genotype ◽  
Eastern Wolf ◽  
Free Ranging ◽  
Natural Dispersal ◽  
St Lawrence River

A free-ranging canid killed near Caraquet, New Brunswick, Canada, in 2012 exhibited a mitochondrial DNA sequence of Gray Wolf (Canis lupus) origin and a Y-chromosome haplotype of Eastern Wolf (C. lycaon) origin. The animal, which is the first wolf recorded in New Brunswick since 1862, was identified as a Gray–Eastern Wolf hybrid (C. lupus x C. lycaon) based on analysis of its autosomal microsatellite genotype. Stable carbon isotope values (δ13C) suggest that the Caraquet wolf was of wild origin. Likewise, δ13C analysis suggests that a wolf–coyote hybrid killed in Quebec south of the St. Lawrence River in 2002 was also of wild origin. However, δ13C values for a wolf from the same region in 2006 suggest that this animal spent most of its life feeding predominantly on non-wild-source food items. Recent occurrences of wild-origin animals south of the St. Lawrence River demonstrate that wolves are capable of dispersal to formerly occupied areas in southeastern Canada and the United States. However, limited natural dispersal alone will likely not be sufficient to re-establish wolves in northeastern North America.

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.

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