Environmental drivers of beluga whale Delphinapterus leucas habitat use in the Mackenzie Estuary, Northwest Territories, Canada

2019 ◽  
Vol 626 ◽  
pp. 209-226 ◽  
Author(s):  
K Scharffenberg ◽  
D Whalen ◽  
M Marcoux ◽  
J Iacozza ◽  
G Davoren ◽  
...  
Keyword(s):  
Habitat Use ◽  
Northwest Territories ◽  
Beluga Whale ◽  
Environmental Drivers ◽  
Delphinapterus Leucas ◽  
Beluga Whale Delphinapterus Leucas

scholarly journals Social-ecological changes and implications for understanding the declining beluga whale (Delphinapterus leucas) harvest in Aklavik, Northwest Territories

2020 ◽  
Vol 6 (3) ◽  
pp. 229-246 ◽  
Author(s):  
Elizabeth Worden ◽  
Tristan Pearce ◽  
Michelle Gruben ◽  
Dorothy Ross ◽  
Clarence Kowana ◽  
...  
Keyword(s):  
Northwest Territories ◽  
Beluga Whale ◽  
Delphinapterus Leucas ◽  
Social Changes ◽  
Social Ecological ◽  
Ecological Changes ◽  
Dramatic Decline ◽  
Harvest Data ◽  
Beluga Whale Delphinapterus Leucas ◽  
Motivation To Participate

Subsistence is the basis for food access for Inuvialuit in the western Canadian Arctic and has strong economic, dietary, and cultural importance. Inuvialuit harvest beluga whale (Delphinapterus leucas (Pallas, 1776)) from the eastern Beaufort beluga population during summer months within parameters established through co-management. Over the past thirty years there has been a dramatic decline in the number of beluga harvested by Inuvialuit from the community of Aklavik, Northwest Territories. This paper investigates the potential drivers of change, both social and ecological, affecting the beluga harvest. Data were collected using 32 semi-directed interviews and experiential learning. Results revealed that ecological changes, notably coastal erosion at preferred whaling camps and unpredictable and severe weather have made harvesting more difficult, expensive, and often impractical. These changes are being experienced together with social changes including the loss of elders and their knowledge, and changing values and motivations for harvesting beluga. We conclude that no one driver is responsible for the decline in the beluga harvest, but rather it is the result of multiple social-ecological changes operating across scales that affect the feasibility of the harvest and motivation to participate. Isumatuyut ikayuqtuat avvakuyaa niqimun pimagaa Inuvialuit uataani Canadian Arcticmi nakuuyuq manik, niqilu, inuusiq nakuruallaktuaq. Inuvialuit katitait qilalugaq (Delphinapterus leucas (Pallas, 1776)) kivanmun Beaufort qilalugaq suli auyaqmi savaktiit. Sivulliqmi inuinnaq-qulit ukiuqmi mikliyuat tapqua qilalugaq katitait Inuvialuit Aklavik, Northwest Territoriesmi. Una makpiraaq ilisaqtuat anguniaqtuat, iluqatik inuuniarvikmi imaqmilu, tutqaanaittuq qilalugaq katitait. Kisitchiun katitait atugaa inuinnaq-qulit-malruknik apiqsiyuat asulu ilisaqtuat. Taimaagaa takupkagaa imaqmilu allauyuaq, taamna sallirq maqaigaa nuna taamna qilalugaqmun tanmaaq asulu allauyuaq silakluk asiin katitait tutqaanaittuq, akituyuqlu tutqaanaittuq. Taamna allauyuat illisaktuat atautchikun inuuniarvik ila tuquyuat innait asulu ilisimaruat, allauyuat pitqusiqlu ikayuqtuaq katitait qilalugaq. Uvagut taimagaa anguniaqti mikliyuat qilalugaq katitait taimagaa inugiaktut inuuniarvikmi imaqmilu allauyuaq savaktuat tutqaanaittuq asulu katitait ikayuqtuat ila taputiyaa.

scholarly journals Amphritea ceti sp. nov., isolated from faeces of Beluga whale (Delphinapterus leucas)

2014 ◽  
Vol 64 (Pt_12) ◽  
pp. 4068-4072 ◽  
Author(s):  
Young-Ok Kim ◽  
Sooyeon Park ◽  
Doo Nam Kim ◽  
Bo-Hye Nam ◽  
Sung-Min Won ◽  
...  
Keyword(s):  
Phylogenetic Trees ◽  
Sequence Similarity ◽  
Beluga Whale ◽  
Delphinapterus Leucas ◽  
Rrna Gene ◽  
Phenotypic Properties ◽  
Content Type ◽  
Link Type ◽  
Beluga Whale Delphinapterus Leucas ◽  
Type Strains

A Gram-stain-negative, aerobic, non-spore-forming, non-flagellated and rod-shaped or ovoid bacterial strain, designated RA1T, was isolated from faeces collected from Beluga whale (Delphinapterus leucas) in Yeosu aquarium, South Korea. Strain RA1T grew optimally at 25 °C, at pH 7.0–8.0 and in the presence of 2.0 % (w/v) NaCl. Neighbour-joining, maximum-likelihood and maximum-parsimony phylogenetic trees based on 16S rRNA gene sequences revealed that strain RA1T joins the cluster comprising the type strains of three species of the genus Amphritea , with which it exhibited 95.8–96.0 % sequence similarity. Sequence similarities to the type strains of other recognized species were less than 94.3 %. Strain RA1T contained Q-8 as the predominant ubiquinone and summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c), C18 : 1ω7c and C16 : 0 as the major fatty acids. The major polar lipids of strain RA1T were phosphatidylethanolamine, phosphatidylglycerol, two unidentified lipids and one unidentified aminolipid. The DNA G+C content of strain RA1T was 47.4 mol%. The differential phenotypic properties, together with the phylogenetic distinctiveness, revealed that strain RA1T is separated from other species of the genus Amphritea . On the basis of the data presented, strain RA1T is considered to represent a novel species of the genus Amphritea , for which the name Amphritea ceti sp. nov. is proposed. The type strain is RA1T ( = KCTC 42154T = NBRC 110551T).

Anatomy of the heart of the beluga whale (Delphinapterus leucas)

1987 ◽  
Vol 191 (1) ◽  
pp. 89-100 ◽  
Author(s):  
Andr� Bisaillon ◽  
Daniel Martineau ◽  
Mich�le A. St-Pierre
Keyword(s):  
Beluga Whale ◽  
Delphinapterus Leucas ◽  
Beluga Whale Delphinapterus Leucas

Acoustic detections of Arctic marine mammals near Ulukhaktok, Northwest Territories, Canada

2019 ◽  
Vol 97 (1) ◽  
pp. 72-80 ◽  
Author(s):  
W.D. Halliday ◽  
M.K. Pine ◽  
S.J. Insley ◽  
R.N. Soares ◽  
P. Kortsalo ◽  
...  
Keyword(s):  
Northwest Territories ◽  
Marine Mammals ◽  
Bowhead Whale ◽  
The Arctic ◽  
Delphinapterus Leucas ◽  
Anthropogenic Activity ◽  
Marine Animals ◽  
Vocal Activity ◽  
Beluga Whale Delphinapterus Leucas ◽  
Passive Acoustic

The Arctic marine environment is changing rapidly through a combination of sea ice loss and increased anthropogenic activity. Given these changes can affect marine animals in a variety of ways, understanding the spatial and temporal distributions of Arctic marine animals is imperative. We use passive acoustic monitoring to examine the presence of marine mammals near Ulukhaktok, Northwest Territories, Canada, from October 2016 to April 2017. We documented bowhead whale (Balaena mysticetus Linnaeus, 1758) and beluga whale (Delphinapterus leucas (Pallas, 1776)) vocalizations later into the autumn than expected, and we recorded bowhead whales in early April. We recorded ringed seal (Pusa hispida (Schreber, 1775)) vocalizations throughout our deployment, with higher vocal activity than in other studies and with peak vocal activity in January. We recorded bearded seals (Erignathus barbatus (Erxleben, 1777)) throughout the deployment, with peak vocal activity in February. We recorded lower bearded seal vocal activity than other studies, and almost no vocal activity near the beginning of the spring breeding season. Both seal species vocalized more when ice concentration was high. These patterns in vocal activity document the presence of each species at this site over autumn and winter and are a useful comparison for future monitoring.

Sign in / Sign up

Export Citation Format

Share Document