Results 21 to 30 of about 1,799 (175)
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 +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 +6 more
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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 +12 more
doaj +1 more source
Comparative Respiratory Physiology in Cetaceans
Frontiers in Physiology, 2020 In the current study, we used breath-by-breath respirometry to evaluate respiratory physiology under voluntary control in a male beluga calf [Delphinapterus leucas, body mass range (Mb): 151–175 kg], an adult female (estimated Mb = 500–550 kg) and a ...
Andreas Fahlman +8 more
doaj +1 more source
ADRENAL HYPERPLASTIC AND DEGENERATIVE CHANGES IN BELUGA WHALES [PDF]
Journal of Wildlife Diseases, 1997 Thirty stranded beluga whales (Delphinapterus leucas) from the St. Lawrence Estuary (Quebec, Canada) population and five animals from the Hudson Bay aboriginal hunt (North-west Territories, Canada) were examined. Twenty one animals from the St. Lawrence Estuary had mild to severe adrenal lesions and four whales from the Hudson Bay population were ...
S, Lair +3 more
openaire +2 more sources
High‐frequency aerial surveys inform the seasonal distribution of Cook Inlet beluga whales
Wildlife Society Bulletin, 2018 Management options to mitigate potential effects from the overlap of anthropogenic and marine mammal activities require understanding of species’ habitat use and movement patterns.
Nathan Wolf +5 more
doaj +1 more source
Alexandria Engineering Journal, 2023 The aim of the optimization economic load dispatch (ELD) problem is to assign the optimal generated power of the thermal units for cost reduction with satisfying the loading of the operational constraints.
Mohamed H. Hassan +4 more
doaj +1 more source
Satellite imagery survey of beluga whales in the Severn and Winisk River estuaries
Arctic ScienceVery High Resolution (VHR) satellite imagery has expanded the scale at which researchers can monitor marine mammal species in Arctic and sub-Arctic regions.
Jordan Stewart +2 more
doaj +1 more source
Range contraction in a beluga whale population [PDF]
Endangered Species Research, 2010 The small, isolated population of beluga whales Delphinapterus leucas in Cook Inlet, Alaska, USA, has had a distinct contraction in range over the past 3 decades. This contraction is a function of a decline in abundance, evidently caused, at least in part, by high takes during unregu- lated subsistence hunting.
DJ Rugh, KEW Shelden, RC Hobbs
openaire +1 more source
Lateralized sound production in the beluga whale (Delphinapterus leucas) [PDF]
Journal of Experimental Biology, 2020 Like other toothed whales, belugas produce sound through pneumatic actuation of two phonic lip pairs, but it is unclear whether both pairs are actuated concurrently to generate a single sound (the dual actuation hypothesis) or laterally in the production of their rich vocal repertoires.
Audra E. Ames +2 more
openaire +4 more sources