Delphinapterus leucas
Diet of St. Lawrence Estuary Beluga ( Delphinapterus leucas ) in a changing ecosystem
... Ecosystems and community structure fluctuate over time as a result of natural and anthropogenic factors that may affect prey availability and population dynamics. Most of what we know about St. Lawrence Estuary (SLE) ...
15
Habitats and movement patterns of white whales Delphinapterus leucas in Svalbard, Norway in a changing climate
... White whales, Delphinapterus leucas, are an ice-asso- ciated marine mammal that has a circumpolar Arctic distribution. Globally, there are thought to be some 150,000 individuals, occurring in 20 recognized ...
12
Foraging ecology of ringed seals (Pusa hispida), beluga whales (Delphinapterus leucas) and narwhals (Monodon monoceros) in the Canadian High Arctic determined by stomach content and stable isotope analysis
... N from liver and muscle) were used to identify habitat and seasonal prey selection by ringed seals (Pusa hispida; n 21), beluga whales (Delphinapterus leucas; n13) and narwhals (Monodon monoceros; n3) in ...
11
Behavioural Changes in Belugas ( Delphinapterus leucas ) During a Killer Whale ( Orcinus orca ) Attack in Southwest Hudson Bay
... During the attack, Belugas were observed moving quickly, porpoising, thrashing in the water, and clump- ing together close to shore in < 2 m of water (Figure 1) as they moved southward along the coast. On the day ...
5
Body condition impacts blood and muscle oxygen storage capacity of free living beluga whales (Delphinapterus leucas)
... (Delphinapterus leucas) exhibit a circumpolar distribution and are the most abundant Arctic species of toothed whales (Odontoceti), and are thus a potential indicator species for the response of Arctic ...
11
Influence of fatiguing noise on auditory evoked responses to stimuli of various levels in a beluga whale, Delphinapterus leucas
... The negative impact of man-made noise on the hearing of odontocetes has attracted considerable recent attention. In the majority of studies, permanent or temporary reductions in sensitivity, known as permanent or ...
7
Contextual imitation of intransitive body actions in a Beluga whale (Delphinapterus leucas) : a “do as other does” study
... The participants in this study were two beluga whales (Delphinapterus leucas) housed at L’Oceanografic Aquarium in Valencia, Spain: an 18 year old female named Yulka and a 55 year old male named Kairo. ...
13
Beluga whale (Delphinapterus leucas) vocalizations and call classification from the eastern Beaufort Sea population
... Beluga whales, Delphinapterus leucas, have a graded call system; call types exist on a continuum making classification challenging. A description of vocalizations from the eastern Beaufort Sea beluga ...
14
Comparison of amikacin pharmacokinetics in a killer whale (Orcinus orca) and a beluga whale (Delphinapterus leucas)
... Abstract: Amikacin, an aminoglycoside antimicrobial, was administered to a killer whale (Orcinus orca) and a beluga whale (Delphinapterus leucas) for the treatment of clinical signs consistent with ...
6
Hearing threshold shifts and recovery after noise exposure in beluga whales, Delphinapterus leucas
... relatively high levels. High-level (~200dBre.1μPa) and short (1s) noise bursts have been found to produce noticeable but small (a few dB) and rapidly recovering TTS in both bottlenose dolphins, Tursiops truncatus, ...
10
Baseline hearing abilities and variability in wild beluga whales (Delphinapterus leucas)
... While hearing is the primary sensory modality for odontocetes, there are few data addressing variation within a natural population. This work describes the hearing ranges (4–150 kHz) and sensitivities of seven apparently ...
10
Diving and swimming performance of white whales, Delphinapterus leucas: an assessment of plasma lactate and blood gas levels and respiratory rates
... White whales Delphinapterus leucas are exceptional divers compared with other small odontocete whales. They routinely dive to depths exceeding 200 m (maximum 647 m, trained dive) and stay submerged for up ...
9
Individuality embedded in the isolation calls of captive beluga whales (Delphinapterus leucas)
... Beluga whales (Delphinapterus leucas) are a circumpolar and annual-migratory species. They migrate long distances from overwintering areas in polynyas to summering areas in coastal and adjacent offshore ...
13
Hearing and whistling in the deep sea: depth influences whistle spectra but does not attenuate hearing by white whales (Delphinapterus leucas) (Odontoceti, Cetacea)
... Analysis of response whistle Key words: white whale, Delphinapterus leucas, hearing, whistling, deep sea, middle ear, eardrum, response, time, threshold, Eustachian spectra, whistle late[r] ...
13
The effect of sea ice loss on beluga whales (Delphinapterus leucas) in West Greenland
... The beluga or white whale (Delphinapterus leucas) is a medium-sized odontocete whale that lives year-round in Arctic waters. A large population that summers in the eastern Canadian High Arctic migrates ...
11
The limits of applicability of the sound exposure level (SEL) metric to temporal threshold shifts (TTS) in beluga whales, Delphinapterus leucas
... The data obtained in Series 1 allow comparisons with different models of TTS dependence on fatiguing sound intensity and duration: 1 the equal energy model assumes that TTS is proportion[r] ...
7
Variation in hearing within a wild population of beluga whales (Delphinapterus leucas)
... On average, for this subset of the Bristol Bay beluga population, hearing loss fell in the normal, mild and slight range, suggesting that animals often had sensitive hearing.. When heari[r] ...
13
Community-Based Observations of Marine Mammal Occurrences in Groswater Bay, Labrador
... (Delphinapterus leucas) were also reported anecdotally, but were less common than the other species, with the possible exception of the Harbour Porpoise (Phocoena ...
7
Leucas Martinicensis as an Inhibitor of Carbon Steel Corrosion in Acidic Medium
... Fresh leaves of Leucas martinicensis (LM) were collected around “Otuoke” river bank in Bayelsa state Nigeria, in the Month of August, 2019. The plant was identified and authenticated in the herbarium of the ...
8
Movement and distribution of young bull sharks Carcharhinus leucas in a variable estuarine environment
... Carcharhinus leucas, although its influence is not be strong enough to be detected in the presence of greater movement ...C. leucas distribution in the Caloosahatchee River estuary, it is most likely ...
13