Results 21 to 30 of about 339,038 (236)

Feeding kinematics, suction, and hydraulic jetting performance of harbor seals (Phoca vitulina). [PDF]

open access: yesPLoS ONE, 2014
The feeding kinematics, suction and hydraulic jetting capabilities of captive harbor seals (Phoca vitulina) were characterized during controlled feeding trials.
Christopher D Marshall   +6 more
doaj   +2 more sources

Post-breeding season migrations of a top predator, the harbor seal (Phoca vitulina richardii), from a marine protected area in Alaska. [PDF]

open access: yesPLoS ONE, 2013
Marine protected areas (MPAs) are increasingly being used as a conservation tool for highly mobile marine vertebrates and the focus is typically on protecting breeding areas where individuals are aggregated seasonally.
Jamie N Womble, Scott M Gende
doaj   +1 more source

Nasopulmonary mites (Halarachnidae) of coastal Californian pinnipeds: Identity, prevalence, and molecular characterization

open access: yesInternational Journal for Parasitology: Parasites and Wildlife, 2021
Mites from the family Halarachnidae Oudemans 1906 are obligate endoparasites that colonize the respiratory tracts of free-living and captive marine mammals.
Risa Pesapane   +8 more
doaj   +1 more source

Variation of blubber thickness for three marine mammal species in the southern Baltic Sea

open access: yesFrontiers in Physiology, 2022
Evaluating populational trends of health condition has become an important topic for marine mammal populations under the Marine Strategy Framework Directive (MSFD). In the Baltic Sea, under the recommendation of Helsinki Commission (HELCOM), efforts have
Ursula Siebert   +9 more
doaj   +1 more source

Long distance movements and disjunct spatial use of harbor seals (Phoca vitulina) in the inland waters of the Pacific Northwest. [PDF]

open access: yesPLoS ONE, 2012
BACKGROUND: Worldwide, adult harbor seals (Phoca vitulina) typically limit their movements and activity to
Sarah H Peterson   +3 more
doaj   +1 more source

Harbor Seals as Sentinels of Ice Dynamics in Tidewater Glacier Fjords

open access: yesFrontiers in Marine Science, 2021
Tidewater glaciers calve icebergs into the marine environment which serve as pupping, molting, and resting habitat for some of the largest seasonal aggregations of harbor seals (Phoca vitulina richardii) in the world. Although they are naturally dynamic,
Jamie N. Womble   +8 more
doaj   +1 more source

Health, disease, mortality and survival in wild and rehabilitated harbor seals (Phoca vitulina) in San Francisco Bay and along the central California coast [PDF]

open access: yes, 2011
Conventional methods for health assessment of wild-caught and stranded seals were used to describe the disease status of harbor seals in California. Clinical chemistry, infectious disease prevalence, immune function, and contaminant data were collected ...
Greig, Denise J.
core   +2 more sources

Are Icelandic harbor seals acoustically cryptic to avoid predation? [PDF]

open access: yesJASA Express Letters, 2021
Male harbor seals (Phoca vitulina) produce stereotypic underwater roars during the mating season. It remains unclear to what extent roar structures vary due to predation levels. Here, seal roars from waters with many (Iceland) and few (Denmark and Sweden)
Helen Rößler   +5 more
doaj   +1 more source

Fine-scale variability in harbor seal foraging behavior. [PDF]

open access: yesPLoS ONE, 2014
Understanding the variability of foraging behavior within a population of predators is important for determining their role in the ecosystem and how they may respond to future ecosystem changes. However, such variability has seldom been studied in harbor
Kenady Wilson   +3 more
doaj   +1 more source

Investigating monitoring options for harbour seals in Special Areas of Conservation in Scotland [PDF]

open access: yes, 2007
Managing a wild population effectively requires knowledge of the abundance and behaviour of the species. Harbour seals (Phoca vitulina) are usually counted when they come ashore at haul-out sites, and so it is important to understand how the number of ...
Cunningham, Louise
core   +2 more sources

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