Results 221 to 230 of about 18,439 (273)

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
openaire   +2 more sources

Effects of dietary polyphenols on mucosal and humoral immune responses, antioxidant defense and growth gene expression in beluga sturgeon (Huso huso)

, 2020
Tannins are a class of polyphenols, well known for their potent natural antioxidant properties, which have a beneficial effect on the digestive tract and contribute to improving the welfare of terrestrial farmed animals.
R. Safari, S. Hoseinifar, M. Imanpour, M. Mazandarani, Habibollah Sanchouli, M. Paolucci   +5 more
semanticscholar   +1 more source

Cardiorespiratory Responses to Acoustic Noise in Belugas

2016
To date, most research on the adverse effects of anthropogenic noise on marine mammals has focused on auditory and behavioral responses. Other responses have received little attention and are often ignored. In this study, the effect of acoustic noise on heart rate was examined in captive belugas.
Oleg I, Lyamin, Svetlana M, Korneva, Viatcheslav V, Rozhnov, Lev M, Mukhametov   +3 more
openaire   +2 more sources

Frequency Tuning of Hearing in the Beluga Whale

2016
Data on frequency tuning in odontocetes are contradictory: different authors have reported filter qualities from 2 to almost 50. In this study, frequency tuning was measured in a beluga whale (Delphinapterus leucas) using a rippled-noise test stimulus in conjunction with the auditory evoked potential (AEP) technique.
Evgeniya V, Sysueva, Dmitry I, Nechaev, Vladimir V, Popov, Alexander Y, Supin   +3 more
openaire   +2 more sources

Multi-objective distributed generation hierarchical optimal planning in distribution network: Improved beluga whale optimization algorithm

Expert systems with applications, 2023
Ling-ling Li, Xingang Fan, Kuo‐Jui Wu, Kanchana Sethanan, Ming‐Lang Tseng   +4 more
semanticscholar   +1 more source

Acoustic Signature of the Beluga Whale

The Journal of the Acoustical Society of America, 1974
Acoustic signatures have been acquired from a pod of Beluga (Delphinapt-Erus Leucas) whales. These whales were swimming unmolested on the surface in the lead ∼1000×200 yd in the north Bering Sea. The acoustic data were acquired with a sensitive noise system ( — 84 dB) in a region free of man-made noise.
openaire   +1 more source

Anthropogenic and Climatic Drivers of Long-Term Changes of Mercury and Feeding Ecology in Arctic Beluga (Delphinapterus leucas) Populations

Environmental Science & Technology, 2022
Jean-Pierre W Desforges, Peter Outridge, Keith A Hobson   +2 more
exaly  

Effect of a diet enriched with sodium propionate on growth performance, antioxidant property, innate-adaptive immune response, and growth-related genes expression in critically endangered beluga sturgeon (Huso huso).

Fish and Shellfish Immunology, 2022
E. Ahmadifar, Mahboubeh Eslami, N. Kalhor, Amine Zaretabar, M. Dawood, S. Mohammadzadeh, M. Shahriari Moghadam, M. Yousefi, M. Ahmadifar, S. Hoseinifar, Tonapha Pusadee, Hien Van Doan   +11 more
semanticscholar   +1 more source

NHBBWO: A novel hybrid butterfly-beluga whale optimization algorithm with the dynamic strategy for WSN coverage optimization

Peer-to-Peer Networking and Applications
Xinyi Chen, M. Zhang, Ming Yang, Deguang Wang   +3 more
semanticscholar   +1 more source

Occurrence and temporal trends of industrial antioxidants and UV absorbents in the endangered St. Lawrence Estuary beluga whale (Delphinapterus leucas).

Science of the Total Environment, 2022
K. Blouin, Florentine Malaisé, J. Verreault, S. Lair, Zhe Lu   +4 more
semanticscholar   +1 more source