Results 241 to 250 of about 38,882 (282)

Evaluation of Age Determination Techniques for Gray Wolves

The Journal of Wildlife Management, 1998
We evaluated tooth wear, cranial suture fusion, closure of the canine pulp cavity, and cementum annuli as methods of age determination for known- and unknown-age gray wolves (Canis lupus) from Alaska, Minnesota, Ontario, and Isle Royale, Michigan. We developed age classes for cranial suture closure and tooth wear. We used measurement data obtained from
David B. Landon, Carol A. Waite, Rolf O. Peterson, L. David Mech   +3 more
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Gastrointestinal helminths of gray wolves (Canis lupus lupus) from Sweden

Parasitology Research, 2018
As the Scandinavian wolf population is limited in size, it is only rarely subject to systematic studies on its disease biology, especially gastrointestinal parasites. Therefore, this study aims to describe the prevalence of gastrointestinal helminths of gray wolves hunted on a limited license as a part of a wildlife management program.
Mohammad Nafi Solaiman Al-Sabi, Linnea Rääf, Eva Osterman-Lind, Henrik Uhlhorn, Christian Moliin Outzen Kapel   +4 more
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Restore protected status for gray wolves

Science, 2021
P, Kareiva, J A, Estes, M, Marvier
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Effects of Canine Parvovirus on Gray Wolves in Minnesota

The Journal of Wildlife Management, 1995
Long-term effects of disease on wild animal population demography is not well documented. We studied a gray wolf (Canis lupus population in a 2,060-km 2 area of Minnesota for 15 years to determine its response to canine parvovirus (CPV). The CPV had little effect (P > 0.05) on wolf population size while epizootic during 1979-83.
L. David Mech, Sagar M. Goyal
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Lifetime reproductive characteristics of gray wolves

Journal of Mammalogy
Abstract Female and male cooperative breeders can use different strategies to maximize reproduction and fitness over their lifetimes. Answering questions about fitness in cooperative breeders requires long-term studies as well as complete data on group composition and size which can be exceedingly difficult to obtain.
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Vitrification of oocytes from endangered Mexican gray wolves (Canis lupus baileyi)

Theriogenology, 2011
Careful genetic management, including cryopreservation of genetic material, is central to conservation of the endangered Mexican gray wolf. We tested a technique, previously used to vitrify human and domestic animal oocytes, on oocytes from domestic dogs as a model and from the endangered Mexican wolf.
S, Boutelle, K, Lenahan, R, Krisher, K L, Bauman, C S, Asa, S, Silber   +5 more
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Electrocardiographic consequences of a peripatetic lifestyle in gray wolves (Canis lupus)

Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 1998
Cardiac chamber enlargement and hypertrophy are normal physiologic responses to repetitive endurance exercise activity in human beings and domestic dogs. Whether similar changes occur in wild animals as a consequence of increased activity is unknown. We found that free-ranging gray wolves (Canis lupus, n = 11), the archetypical endurance athlete, have ...
P, Constable, K, Hinchcliff, N, Demma, M, Callahan, B, Dale, K, Fox, L, Adams, R, Wack, L, Kramer   +8 more
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HEMANGIOSARCOMA IN RED WOLVES (CANIS RUFUS) AND GRAY WOLVES (CANIS LUPUS) IN HUMAN CARE: SIX CASES

Journal of Zoo and Wildlife Medicine
Wolves are commonly housed in zoological institutions and captive breeding facilities that are essential for maintaining genetic diversity and for the recovery of declining populations. Neoplasia is a common cause of mortality in wolves, but hemangiosarcoma has not previously been described. This condition was diagnosed in four red wolves (Canis rufus)
Jasmine Y, Sarvi, Katherine E, Dowling, Julie, Swenson, Holly J, Haefele, Michael M, Garner   +4 more
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Cloning endangered gray wolves (Canis lupus) from somatic cells collected postmortem

Theriogenology, 2008
The objective of the present study was to investigate whether nuclear transfer of postmortem wolf somatic cells into enucleated dog oocytes, is a feasible method to produce a cloned wolf. In vivo-matured oocytes (from domestic dogs) were enucleated and fused with somatic cells derived from culture of tissue obtained from a male gray wolf 6h after death.
Oh, HJ Oh, H. J., Kim, MK Kim, M. K., Jang, G Jang, G., Kim, HJ Kim, H. J., Hong, SG Hong, S. G., Park, JE Park, J. E., Park, K Park, K., Park, C Park, Chankyu, Sohn, SH Sohn, S. H., Kim, DY Kim, D. Y., Shin, NS Shin, N. S., Lee, BC Lee, B. C.   +11 more
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Rethinking conservation goals for North America's gray wolves

2015
Gray wolves (Canis lupis) were extirpated from the continental United States in the early 1900’s. During the 1970’s wolves began dispersing into Montana and they were immediately placed under the protection of the Endangered Species Act. Reintroduction areas were established for the wolves in the Northern Rocky Mountains, West of the Great Lakes, and ...
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