ASSAYS FOR DETECTION AND IDENTIFICATION OF THE CAUSATIVE AGENT OF MANGE IN FREE-RANGING BLACK BEARS (URSUS AMERICANUS)

2018 ◽  
Vol 54 (3) ◽  
pp. 471 ◽  
Author(s):  
Sarah K. Peltier ◽  
Justin D. Brown ◽  
Mark A. Ternent ◽  
Heather Fenton ◽  
Kevin D. Niedringhaus ◽  
...  
Keyword(s):  
Causative Agent ◽  
Ursus Americanus ◽  
Black Bears ◽  
Detection And Identification ◽  
Free Ranging

Seroprevalence of Sarcoptes scabiei in Free-Ranging Black Bears (Ursus americanus) in Eastern North Carolina, USA

2021 ◽  
Vol 57 (3) ◽  
Author(s):  
Emma Houck ◽  
Colleen Olfenbuttel ◽  
Michael Stoskopf ◽  
Suzanne Kennedy-Stoskopf
Keyword(s):  
North Carolina ◽  
Ursus Americanus ◽  
Sarcoptes Scabiei ◽  
Black Bears ◽  
Eastern North Carolina ◽  
Free Ranging

Seroprevalence of Toxoplasma gondii From Free-Ranging Black Bears (Ursus americanus) From Florida

2012 ◽  
Vol 98 (3) ◽  
pp. 674-675 ◽  
Author(s):  
D. L. Chambers ◽  
W. A. Ulrey ◽  
J. M. Guthrie ◽  
O. C. H. Kwok ◽  
J. J. Cox ◽  
...  
Keyword(s):  
Toxoplasma Gondii ◽  
Ursus Americanus ◽  
Black Bears ◽  
Free Ranging

scholarly journals Identification of gammaherpesvirus infection in free-ranging black bears (Ursus americanus)

2019 ◽  
Vol 259 ◽  
pp. 46-53 ◽  
Author(s):  
Wendy Black ◽  
Ryan M. Troyer ◽  
Jesse Coutu ◽  
Karsten Wong ◽  
Peregrine Wolff ◽  
...  
Keyword(s):  
Ursus Americanus ◽  
Black Bears ◽  
Free Ranging

scholarly journals Methods for Capturing Free-Ranging Black Bears, Ursus americanus, in Difficult Locations

2003 ◽  
Vol 117 (4) ◽  
pp. 621 ◽  
Author(s):  
John E. McDonald
Keyword(s):  
Ursus Americanus ◽  
Black Bear ◽  
Black Bears ◽  
Chemical Immobilization ◽  
Free Ranging

Long-term research or monitoring studies involving radiomarked Black Bears (Ursus americanus) conducted in areas with high human and road densities may require that radiocollars be replaced or bears recaptured for other purposes. The use of trained bear hounds is particularly suited to recapturing specific bears. However, in certain situations, hounds may not be used safely or bears may seek refuge in difficult locations. Effectiveness of two methods to capture bears via remote darting and chemical immobilization are described: (1) stalking and rushing females with cubs; and (2) allowing treed bears to descend. Both methods rely on assumptions about Black Bear behavior. Nine captures of eight individual bears are discussed; one bear drowned after being immobilized, and all others survived >5 months after capture.

scholarly journals Sex, Diet, and the Social Environment: Factors Influencing Hair Cortisol Concentration in Free-Ranging Black Bears (Ursus americanus)

PLoS ONE ◽  
2015 ◽  
Vol 10 (11) ◽  
pp. e0141489 ◽  
Author(s):  
Diana J. R. Lafferty ◽  
Mark L. Laudenslager ◽  
Garth Mowat ◽  
Doug Heard ◽  
Jerrold L. Belant
Keyword(s):  
Social Environment ◽  
Ursus Americanus ◽  
Cortisol Concentration ◽  
Black Bears ◽  
Hair Cortisol ◽  
Environment Factors ◽  
Factors Influencing ◽  
The Social ◽  
Free Ranging

Microsatellite population structure of Newfoundland black bears (Ursus americanus hamiltoni)

2011 ◽  
Vol 89 (9) ◽  
pp. 831-839 ◽  
Author(s):  
H. Dawn Marshall ◽  
Edward S. Yaskowiak ◽  
Casidhe Dyke ◽  
Elizabeth A. Perry
Keyword(s):  
Population Structure ◽  
Ursus Americanus ◽  
Intraspecific Variability ◽  
Black Bears ◽  
Postglacial Colonization ◽  
Correct Assignment ◽  
Hair Samples ◽  
Males And Females ◽  
Two Populations ◽  
F Statistics

We investigated population structure of black bears ( Ursus americanus hamiltoni Cameron, 1957) from insular Newfoundland using the microsatellite profiles of 12 loci from three broadly distributed areas (Northern, Baie Verte, and Bonavista peninsulas). Our goals were to revisit earlier findings of low heterozygosity in Newfoundland and increase knowledge of intraspecific variability in black bears, and make inferences about postglacial colonization and contemporary movements of island black bears. Ninety-three individuals (42 males) were identified among 543 hair samples: 21 from Bonavista, 25 from Northern Peninsula, and 47 from Baie Verte. Genetic diversity is relatively low (HE = 0.42) and decreases from northwest to southeast. Small but significant subpopulation differentiation revealed by F statistics is greatest between Northern and Baie Verte peninsulas; it is lower and comparable in the remaining pairwise comparisons. We hypothesize that postglacial colonization proceeded from the Northern Peninsula southeastward. Bears migrated from the Northern Peninsula to Baie Verte at some more distant time in the past, then diverged by genetic drift. More recently, migration occurred from these two populations to Bonavista, characterized by positive FIS indicative of admixture. Tests of biased dispersal and posterior probability of correct assignment to locality reveal contemporary movements of both males and females with historical dispersal attributable to males.

Hibernating black bears have blood chemistry and plasma amino acid profiles that are indicative of long-term adaptive fasting

2005 ◽  
Vol 83 (9) ◽  
pp. 1257-1263 ◽  
Author(s):  
T D Lohuis ◽  
T D.I Beck ◽  
H J Harlow
Keyword(s):  
Amino Acids ◽  
Ursus Americanus ◽  
Muscle Protein ◽  
Blood Chemistry ◽  
Black Bears ◽  
Late Winter ◽  
Amino Acid Profiles ◽  
Protein Conservation ◽  
Branched Chain

Blood samples were drawn from six black bears (Ursus americanus Pallas, 1780) active in the summer and six others in early and late hibernation. Plasma urea:creatinine ratios and concentrations of amino acids, alanine aminotransferase, and aspartate aminotransferase dropped during the winter denning season, suggesting a decreased protein breakdown. Fifteen amino acids (3 branched chain and 12 glucogenic) were lower in the early winter than in the summer, but 6 of these amino acids rose back to summer levels by the late denning season. Hydroxyproline and glycine were also elevated during late winter, suggesting an increase in collagen breakdown. This profile suggests a dynamic process of adaptive fasting and protein conservation during the winter with a mobilization of non-myofibrilar collagen and perhaps smooth muscle protein reserves to augment a potential but slight increased breakdown of skeletal muscle during the late winter.

Sperm ultrastructure, morphometry, and abnormal morphology in American black bears (Ursus americanus)

2010 ◽  
Vol 74 (8) ◽  
pp. 1403-1413 ◽  
Author(s):  
L.F.C. Brito ◽  
P.L. Sertich ◽  
G.B. Stull ◽  
W. Rives ◽  
M. Knobbe
Keyword(s):  
Ursus Americanus ◽  
Black Bears ◽  
Sperm Ultrastructure ◽  
Abnormal Morphology ◽  
American Black ◽  
American Black Bears
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