Results 51 to 60 of about 552 (176)

Distribution and abundance of Canadian High Arctic belugas, 1974-1979

open access: yesNAMMCO Scientific Publications, 2002
We conducted >236,000 km of aerial surveys and some supplementary studies of belugas (Delphinapterus leucas) in the central and eastern Canadian High Arctic in 974-79.
William R Koski, Kerwin J Finley
doaj   +1 more source

Beluga (Delphinapterus leucas) Novel Bubble Helix Play Behavior [PDF]

open access: yesAnimal Behavior and Cognition, 2014
Cetaceans demonstrate considerable ingenuity in their play with bubbles. Both wild and captive cetaceans have been reported to manipulate self-produced bubbles (Delfour & Aulagnier, 1997; Gewalt, 1989; Kuczaj, Makecha, Trone, Paulos, & Ramos, 2006 ...
Brittany L. Jones, Stan A. Kuczaj II
doaj   +1 more source

Stranded beluga (Delphinapterus leucas) calf response and care: reports of two cases with different outcomes

open access: yesPolar Research, 2021
Given the remote, rugged areas belugas typically inhabit and the low rehabilitation success rate with any cetacean, it is rare to have the opportunity to rescue a live-stranded beluga.
Caroline E.C. Goertz   +21 more
doaj   +1 more source

Measuring Hearing in Wild Beluga Whales [PDF]

open access: yes, 2016
We measured the hearing abilities of seven wild beluga whales (Delphinapterus leucas) during a collection-and-release experiment in Bristol Bay, AK. Here we summarize the methods and initial data from one animal and discuss the implications of this experiment. Audiograms were collected from 4 to 150 kHz.
Mooney, T. Aran   +5 more
openaire   +3 more sources

Take my breath away: Defining the oxygen saturation threshold for fish cortisol stress response

open access: yesJournal of Fish Biology, EarlyView.
Abstract Human activities are affecting the number, size and severity of hypoxic zones in aquatic ecosystems. As oxygen is one of the most important abiotic factors affecting fish biology, exposure to low levels of dissolved oxygen may lead to a reduction in fitness.
Sébastien Alfonso   +4 more
wiley   +1 more source

Decadal Bowhead Whale Baleen Stable Isotope and Hormone Chronologies (1985–2010) Provide Insight Into Arctic Ecosystem Change

open access: yesGlobal Change Biology Communications, Volume 1, Issue 3, September 2026.
Long‐term chronologies constructed from individual bowhead baleen plates reveal stable isotope declines consistent with regional Arctic food web or productivity changes superimposed on global anthropogenic C and N inputs, while relatively stable hormone concentrations over the same period provide no evidence of a concomitant increase in physiological ...
Cory J. D. Matthews   +5 more
wiley   +1 more source

Resource assessment and projections for the belugas off West Greenland using the population model of HITTER-FITTER

open access: yesNAMMCO Scientific Publications, 2002
The population model of the HITTER-FITTER package is applied to compute trajectories for single and two stock scenarios for the beluga population wintering off West Greenland.
Doug S Butterworth   +2 more
doaj   +1 more source

Multi‐Marker Mitochondrial Analysis Reveals Genetic Diversity and Phylogenetic Relationships of Black Sea Sturgeons (Acipenseridae)

open access: yesEcology and Evolution, Volume 16, Issue 7, July 2026.
Sturgeons are an important species due to their complex genetic structure and evolutionary characteristics. Unfortunately, they are threatened with extinction due to illegal and overfishing, as well as the loss of their natural habitats. In our work, we examine the genetic diversity of four sturgeon species that inhabit the Black Sea basin and its ...
György Deák   +4 more
wiley   +1 more source

Revisiting the status of the Arctic's Last Ice Area as a refuge for marine predators

open access: yesEcosphere, Volume 17, Issue 7, July 2026.
Abstract The Last Ice Area (LIA), located north of the Canadian Arctic Archipelago and Greenland, has the Arctic's oldest and thickest sea ice. The LIA is hypothesized to be a potential climate refuge for ice‐dependent top predators as Arctic sea ice continues to decline.
Kristin L. Laidre   +6 more
wiley   +1 more source

Toxoplasma gondii and related parasites in beluga (Delphinapterus leucas) harvested as country foods by Inuit hunters in Nunavut, Canada

open access: yesArctic Science
Toxoplasma gondii is a very common zoonotic parasite in humans and animals worldwide. Human seroprevalence is particularly high in some regions of Canada’s North and is thought to be associated with the consumption of traditionally prepared country foods.
Harriet Merks   +3 more
doaj   +1 more source

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