Results 21 to 30 of about 7,970 (263)

Cementum structure in Beluga whale teeth [PDF]

Acta Biomaterialia, 2017
A large fraction of the volume of Beluga whale (Delphinapterus leucas) teeth consists of cementum, a mineralized tissue which grows throughout the life of the animal and to which the periodontal ligaments attach. Annular growth bands or growth layer groups (GLGs) form within Beluga cementum, and this study investigates GLG structure using X-ray ...
S R, Stock, L A, Finney, A, Telser, E, Maxey, S, Vogt, J S, Okasinski   +5 more
openaire   +2 more sources

Population dynamics of the threatened Cumberland Sound beluga (Delphinapterus leucas) population

Arctic Science, 2021
Current scientific evidence indicates that the threatened Cumberland Sound beluga whale (Delphinapterus leucas (Pallas, 1776)) population is genetically differentiated and spatially segregated from other beluga whale populations. This population has been
Cortney A. Watt, Marianne Marcoux, Steven H. Ferguson, Mike O. Hammill, Cory J.D. Matthews   +4 more
doaj   +1 more source

Machine learning models development for accurate multi-months ahead drought forecasting: Case study of the Great Lakes, North America.

PLoS ONE, 2023
The Great Lakes are critical freshwater sources, supporting millions of people, agriculture, and ecosystems. However, climate change has worsened droughts, leading to significant economic and social consequences.
Mohammed Majeed Hameed, Siti Fatin Mohd Razali, Wan Hanna Melini Wan Mohtar, Norinah Abd Rahman, Zaher Mundher Yaseen   +4 more
doaj   +1 more source

Photographic evidence of tagging impacts for two beluga whales from the Cumberland Sound and western Hudson Bay populations

Arctic Science, 2022
Beluga whale (Delphinapterus leucas (Pallas, 1776)) movements, habitat use, and diving behaviour have been studied using satellite-linked transmitters for decades.
Kasey P. Ryan, Stephen D. Petersen, Steven H. Ferguson, C-Jae C. Breiter, Cortney A. Watt   +4 more
doaj   +1 more source

The Electrocardiogram of a Beluga Whale [PDF]

Circulation, 1953
In the course of our study of the comparative anatomy and physiology of the mammalian heart, it became necessary to develop a technic to obtain the electrocardiogram of the largest mammal of all. Because of its availability, the small white Beluga whale in northern waters was the first object of this research, prior to obtaining the record of a large ...
R L, KING, J L, JENKS, P D, WHITE
openaire   +2 more sources

Incorporating environmental covariates into a Bayesian stock production model for the endangered Cumberland Sound beluga population

Endangered Species Research, 2022
The Cumberland Sound (CS) beluga (Delphinapterus leucas) population inhabits CS on eastern Baffin Island, Nunavut, Canada, and is listed as threatened under the Canadian Species at Risk Act.
BA Biddlecombe, CA Watt
doaj   +1 more source

Improved Beluga Whale Optimization for RFID Network Planning [PDF]

Jisuanji kexue
With the development of radio frequency identification(RFID) technology,the demand for its application is getting higher and higher,and the research in reader deployment is gradually deepening.In order to solve the RFID reader location planning problem ...
CHEN Yijun, ZHENG Jiali, LI Zhiqian, ZHANG Jiangbo, ZHU Xinghong
doaj   +1 more source

Environmental drivers of beluga whale distribution in a changing climate: a case study of summering aggregations in the Mackenzie Estuary and Tarium Niryutait Marine Protected Area

Arctic Science, 2022
During summer, the Eastern Beaufort Sea beluga whale (Delphinapterus leucas (Pallas, 1776)) population aggregates in the waters of the Mackenzie Estuary and Tarium Niryutait Marine Protected Area (TNMPA).
Aurélie Noel, John Iacozza, Emmanuel Devred, Marianne Marcoux, Claire Hornby, Lisa L. Loseto   +5 more
doaj   +1 more source

Beluga whale (Delphinapterus leucas) behaviour in the presence of whale-watching vessels

Frontiers in Marine Science, 2023
Beluga whales (Delphinapterus leucas) are social animals that return to the same estuaries each summer season. The Western Hudson Bay belugas in the Churchill River estuary appear to be attracted to boats, resulting in whale-watching being a popular ...
Kristin H. Westdal, Kristin H. Westdal, Pierre R. Richard, Jessica Sportelli, Erica Gillis, Steve H. Ferguson, Steve H. Ferguson   +6 more
doaj   +1 more source

Genetic history and stock identity of beluga whales in Kotzebue Sound

Polar Research, 2021
We investigate the recent history and stock identity of beluga whales (Delphinapterus leucas) in Kotzebue Sound in the Chukchi Sea, a region long frequented by large numbers of belugas in summer until their near disappearance in the 1980s. Wide variation
Gregory O’Corry-Crowe, Tatiana Ferrer, John J. Citta, Robert Suydam, Lori Quakenbush, John J. Burns, Jorge Monroy, Alex Whiting, Glenn Seaman, Willie Goodwin, Sr., Matthias Meyer, Sarah Rodgers, Kathryn J. Frost   +12 more
doaj   +1 more source