Results 191 to 200 of about 4,896 (237)

Propagation of beluga echolocation signals

The Journal of the Acoustical Society of America, 1987
The propagation characteristics of high-frequency echolocation signals (peak energies above 100 kHz) of the beluga (Delphinapterus leucas) were measured while the animal performed a target detection task. The whale was trained to station on a bite plate so that its transmission beam could be measured in the vertical and horizontal planes using ...
W W, Au, R H, Penner, C W, Turl
openaire   +2 more sources

Allonursing in captive belugas (Delphinapterus leucas)

Zoo Biology, 2010
This study describes allonursing (females nursing offspring that are not their own) in captive belugas (Delphinapterus leucas). In addition to the calf's mother, two females that were not pregnant or nursing at the time of the calf's birth spontaneously lactated and nursed the male calf intermittently throughout 34 months of his life at the Vancouver ...
Elaine S, Leung, Valeria, Vergara, Lance G, Barrett-Lennard   +2 more
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Delphinapterus leuca (Beluga whale)

1977
The karyotypes were donated by Dr. Deborah A. Duffield and come from lymphocyte cultures. The female karyotype is C-banded. The last pair of autosomes has distinct satellite with heteromorphic C-band.
T. C. Hsu, Kurt Benirschke
openaire   +1 more source

Characterizing respiratory capacity in belugas (Delphinapterus leucas)

Respiratory Physiology & Neurobiology, 2019
We measured respiratory flow, breath duration, and calculated tidal volume (VT) in nine belugas (Delphinapterus leucas, mean measured body mass: 628 ± 151 kg, n = 5) housed in managed care facilities. Both spontaneous (resting at station) and trained maximal respirations (chuffs) were measured.
Andreas Fahlman, Alexandra Epple, Daniel García-Párraga, Todd Robeck, Martin Haulena, Marina Piscitelli-Doshkov, Micah Brodsky   +6 more
openaire   +2 more sources

Beluga whale optimization: A novel nature-inspired metaheuristic algorithm

Knowledge-Based Systems, 2022
Changting Zhong, Zeng Meng
exaly  

Suspect and Nontarget Screening Revealed Class-Specific Temporal Trends (2000–2017) of Poly- and Perfluoroalkyl Substances in St. Lawrence Beluga Whales

Environmental Science & Technology, 2021
Holly Barrett, Magali Houde, Jonathan Verreault   +2 more
exaly  

beluga, n.

2023
openaire   +1 more source

Dynamic Candidate Solution Boosted Beluga Whale Optimization Algorithm for Biomedical Classification

Mathematics, 2023
Essam H Houssein
exaly  

Economic load dispatch solution of large-scale power systems using an enhanced beluga whale optimizer

AEJ - Alexandria Engineering Journal, 2023
Mohamed Hosny Hassan, Francisco Jurado, Mohamed Ebeed   +2 more
exaly  

One Beluga, Two Beluga

Science, 2002
openaire   +1 more source