Results 21 to 30 of about 157,314 (299)

No evidence of metabolic depression in Western Alaskan juvenile Steller sea lions (Eumetopias jubatus). [PDF]

open access: yesPLoS ONE, 2014
Steller sea lion (Eumetopias jubatus) populations have undergone precipitous declines through their western Alaskan range over the last four decades with the leading hypothesis to explain this decline centering around changing prey quality, quantity, or ...
Lisa A Hoopes   +3 more
doaj   +1 more source

Are California Sea Lions (Zalophus californianus) Sensitive to the Attentional State of their Caretakers? [PDF]

open access: yesAnimal Behavior and Cognition, 2014
Human-animal relations appear in various contexts (homes, farms, zoos, aquatic parks, etc.) possibly favoring the emergence of the ability to understand heterospecific communication signals in several species.
Marie Penel, Fabienne Delfour
doaj   +1 more source

Detection and characterization of diverse coccidian protozoa shed by California sea lions

open access: yesInternational Journal for Parasitology: Parasites and Wildlife, 2016
Tissue-cyst forming coccidia in the family Sarcocystidae are etiologic agents of protozoal encephalitis in marine mammals including the federally listed Southern sea otter (Enhydra lutris).
Yvette A. Girard   +9 more
doaj   +1 more source

Seals, Sea Lions, and Walruses [PDF]

open access: yes
A classroom resource for K-3 lessons on these pinnipeds. Guide is complete with background materials (for students and teacher), goals and objectives, a glossary, 10 classroom activities, and a bibliography for obtaining additional resources.

core   +4 more sources

Changes in the overwintering diet of Steller sea lions (Eumetopias jubatus) in relation to the 2014 – 2016 northeast Pacific marine heatwave

open access: yesGlobal Ecology and Conservation, 2023
Understanding variation in the diets of endangered species during critical time periods in their annual cycle is of utmost importance because of the effects that diet can have on vital rates and population trends.
John M. Maniscalco
doaj   +1 more source

Cooperation and opportunism in Galapagos sea lion hunting for shoaling fish

open access: yesEcology and Evolution, 2021
For predators, cooperation can decrease the cost of hunting and potentially augment the benefits. It can also make prey accessible that a single predator could not catch. The degree of cooperation varies substantially and may range from common attraction
Tui De Roy   +2 more
doaj   +1 more source

Establishing of local population, population dynamics and current abundance of Steller sea lion ( Eumetopias jubatus) in the Commander Islands

open access: yesИзвестия ТИНРО, 2014
The time course of the establishment of a local population of Steller sea lions in the Commander Islands, population dynamics and current abundance were studied using literature published since the 1930s and the author’s observations conducted during ...
Sergey D. Ryazanov   +5 more
doaj   +1 more source

Transcriptional Profiles of California Sea Lion Peripheral NK and CD+8 T Cells Reflect Ecological Regionalization and Infection by Oncogenic Viruses

open access: yesFrontiers in Immunology, 2019
The California sea lion is one of the few wild mammals prone to develop cancer, particularly urogenital carcinoma (UGC), whose prevalence is currently estimated at 25% of dead adult sea lions stranded along the California coastline.
Ignacio Peñín   +7 more
doaj   +1 more source

Sea Lion Optimization Algorithm [PDF]

open access: yesInternational Journal of Advanced Computer Science and Applications, 2019
This paper suggests a new nature inspired metaheuristic optimization algorithm which is called Sea Lion Optimization (SLnO) algorithm. The SLnO algorithm imitates the hunting behavior of sea lions in nature. Moreover, it is inspired by sea lions' whiskers that are used in order to detect the prey.
Raja Masadeh, Basel A., Ahmad Sharieh
openaire   +1 more source

Spatial distribution, movements, and geographic range of Steller sea lions (Eumetopias jubatus) in Alaska.

open access: yesPLoS ONE, 2018
The two stocks of Steller sea lions (Eumetopias jubatus) in Alaska include an endangered western stock, recently recovering in parts of its range following decades of decline, and an eastern stock which was removed from the U.S.
Lauri A Jemison   +4 more
doaj   +1 more source

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