Results 1 to 10 of about 30,014 (151)

Thelazia callipaeda Eyeworms in American Black Bear, Pennsylvania, USA, 2023 [PDF]

Emerging Infectious Diseases
We identified a Thelazia callipaeda eyeworm in an American black bear in Pennsylvania, USA, on the basis of its morphological features and molecular analysis. Our finding highlights emergence of a T.
Caroline Sobotyk, Jaclyn Dietrich, Guilherme G. Verocai, Lauren Maxwell, Kevin Niedringhaus   +4 more
doaj   +4 more sources

Pleistocene–Holocene vicariance, not Anthropocene landscape change, explains the genetic structure of American black bear (Ursus americanus) populations in the American Southwest and northern Mexico [PDF]

Ecology and Evolution, 2022
The phylogeography of the American black bear (Ursus americanus) is characterized by isolation into glacial refugia, followed by population expansion and genetic admixture. Anthropogenic activities, including overharvest, habitat loss, and transportation
Matthew J. Gould, James W. Cain III, Todd C. Atwood, Larisa E. Harding, Heather E. Johnson, Dave P. Onorato, Frederic S. Winslow, Gary W. Roemer   +7 more
doaj   +2 more sources

Matrilinear hierarchy in the American black bear (Ursus americanus). [PDF]

Integr Zool, 2022
AbstractThe American black bear (Ursus americanus) was long thought to be solitary and its social organization has not been well described. Here, we present new data on black bear social structure. The objectives of the study were to make detailed observations of the behavior of wild black bears to determine their social interactions and structure.
Kilham B, Spotila JR.
europepmc   +4 more sources

Tick abundance and life-stage segregation on the American black bear (Ursus americanus) [PDF]

International Journal for Parasitology: Parasites and Wildlife, 2021
Tick abundance and diagnosed cases of tick-borne diseases have been increasing in the United States. American black bear (Ursus americanus) populations have also been increasing in the eastern United States.
Hannah S. Tiffin, Michael J. Skvarla, Erika T. Machtinger   +2 more
doaj   +2 more sources

American black bear (Ursus americanus) as a potential host for Campylobacter jejuni. [PDF]

PLoS ONE
The Gram-negative bacterium Campylobacter jejuni is part of the commensal gut microbiota of numerous animal species and a leading cause of bacterial foodborne illness in humans. Most complete genomes of C.
Craig T Parker, Sophia Kathariou, William G Miller, Steven Huynh, Ben Pascoe, Kerry K Cooper   +5 more
doaj   +3 more sources

American Black Bear–Apiary Conflicts in Michigan

Human-Wildlife Interactions, 2017
American black bear (Ursus americanus) damage to apiaries can result in substantial economic loss. We used records of black–bear apiary conflicts collected by the Michigan Department of Natural Resources to characterize damage in the Upper and Northern ...
Beverly K. McKinley, Jerrold L. Belant, Dwayne R. Etter   +2 more
doaj   +3 more sources

The urothelium of a hibernator: the American black bear. [PDF]

Physiol Rep, 2015
The American black bear undergoes a 3-5 month winter hibernation during which time bears do not eat, drink, defecate, or urinate. During hibernation renal function (GFR) is 16-50% of normal but urine is reabsorbed across the urinary bladder (UB) urothelium thus enabling metabolic recycling of all urinary constituents.
Spector DA, Deng J, Coleman R, Wade JB.
europepmc   +4 more sources

Factors influencing frequency and severity of human-American black bear conflicts in New York, USA. [PDF]

PLoS ONE, 2023
Free-ranging large carnivores are involved in human-wildlife conflicts which can result in economic costs. Understanding factors that lead to human-wildlife conflicts is important to mitigate these negative effects and facilitate human-carnivore ...
Jamshid Parchizadeh, Kenneth F Kellner, Jeremy E Hurst, David W Kramer, Jerrold L Belant   +4 more
doaj   +2 more sources

Behavior in Free-Living American Black Bear Dens: Parturition, Maternal Care, and Cub Behavior [PDF]

Animals, 2020
Denning behavior has long remained the least observed aspect of bear behavior. During 2010–2013, we used webcams, microphones, the internet, and 14,602 h of archived video to document the denning behaviors of two adult wild black bears (Ursus americanus)
Lynn L. Rogers, Linda McColley, Janet Dalton, Jim Stroner, Douglas Hajicek, Adam Partin, Gordon M. Burghardt   +6 more
doaj   +2 more sources

Bile Duct Stenosis in a Free-Ranging Juvenile American Black Bear (Ursus americanus) [PDF]

Animals
A free-ranging 10-month-old male American black bear (Ursus americanus) was presented to a rehabilitation facility in eastern Tennessee for being orphaned and emaciated, and was diagnosed with bile duct stenosis, leading to euthanasia. On initial intake,
Taylor Jurgens, Fern Nelson, Wesley Sheley, Alexis Johnson, Liandrie Swanepoel, Seth Wyckoff, Julie D. Sheldon   +6 more
doaj   +2 more sources