نتایج جستجو برای: seals

تعداد نتایج: 4450  

2013
Jamie N. Womble Scott M. Gende

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. Yet movements during the non-breeding season can overlap with threats that may be equally as important to population dynamics. Thus understanding habitat use and movements of spe...

Journal: :The Journal of experimental biology 2014
Jillian M Sills Brandon L Southall Colleen Reichmuth

Spotted seals (Phoca largha) inhabit Arctic regions that are facing both rapid climate change and increasing industrialization. While little is known about their sensory capabilities, available knowledge suggests that spotted seals and other ice seals use sound to obtain information from the surrounding environment. To quantitatively assess their auditory capabilities, the hearing of two young ...

2015
Rogier Bodewes Ana Rubio García Sophie M. Brasseur Guillermo J. Sanchez Conteras Marco W. G. van de Bildt Marion P. G. Koopmans Albert D. M. E. Osterhaus Thijs Kuiken Daniel E Crocker

In the spring and summer 2014, an outbreak of seal influenza A(H10N7) virus infection occurred among harbor seals (Phoca vitulina) off the coasts of Sweden and Denmark. This virus subsequently spread to harbor seals off the coasts of Germany and the Netherlands. While thousands of seals were reported dead in Sweden, Denmark and Germany, only a limited number of seals were found dead in the Neth...

2018
Ingebjørg H. Nymo Rolf Rødven Kimberlee Beckmen Anett K. Larsen Morten Tryland Lori Quakenbush Jacques Godfroid

Brucella pinnipedialis was first isolated from true seals in 1994 and from eared seals in 2008. Although few pathological findings have been associated with infection in true seals, reproductive pathology including abortions, and the isolation of the zoonotic strain type 27 have been documented in eared seals. In this study, a Brucella enzyme-linked immunosorbent assay (ELISA) and the Rose Beng...

Journal: :The Journal of parasitology 2008
Brent R Dixon Lorna J Parrington Monique Parenteau Daniel Leclair Mónica Santín Ronald Fayer

The prevalence of Giardia duodenalis and Cryptosporidium spp. was determined for ringed and bearded seals harvested for food in the Nunavik region in northern Quebec, Canada. Flow cytometric results demonstrated that G. duodenalis was present in the intestinal contents of 80% of the ringed seals and 75% of the bearded seals tested, while Cryptosporidium spp. were present in 9% of the ringed sea...

Journal: :Journal of wildlife diseases 2005
Kathleen M Colegrove Linda J Lowenstine Frances M D Gulland

Leptospirosis was identified in six northern elephant seals (Mirounga angustirostris) that were stranded in 1995 along the coast of California (USA). Histologic lesions in all seals included tubulointerstitial nephritis with tubular degeneration and necrosis. Infection was confirmed through identification of spirochetes using an immunohistochemical stain for Leptospira sp. antigens. One affecte...

2017
Yasuhiko Naito Daniel P Costa Taiki Adachi Patrick W Robinson Sarah H Peterson Yoko Mitani Akinori Takahashi

Little is known about the foraging behavior of top predators in the deep mesopelagic ocean. Elephant seals dive to the deep biota-poor oxygen minimum zone (OMZ) (>800 m depth) despite high diving costs in terms of energy and time, but how they successfully forage in the OMZ remains largely unknown. Assessment of their feeding rate is the key to understanding their foraging behavior, but this ha...

2017
Tenaya A. Norris Charles L. Littnan Frances M. D. Gulland Jason D. Baker James T. Harvey

For threatened and endangered species, translocations have been widely used to mitigate multiple sources of mortality that threaten population recovery. Although numerous Hawaiian monk seals Neomonachus schauinslandi have been translocated for a variety of purposes, few monk seal translocations have addressed the problem of prey limitation. To assess the efficacy of using translocations to miti...

Journal: :the international journal of humanities 2013
a.s. mucheshi

this paper focuses on studying, introducing and comparing seals from the settlement areas and cemeteries in the north of central plateau of iran. these seals were discovered in the previous and present excavations and surveys over the region. based on the obtained results, the ratio of similarity and difference between the two groups of seals (from the settlement areas and the cemeteries) is qu...

2003
Xiaorui Hu Zhangxi Lin Han Zhang

ABSTRACT. In order to promote web sales, companies conducting electronic commerce are constantly seeking viable and efficient ways to increase web traffic. One approach is to build consumers’ trust, and ultimately to increase web sales. Many business-to-consumer online merchants follow this approach and display trust-promoting seals on their websites. However, whether these seals really fulfill...

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