scholarly journals BRUCELLA PINNIPEDIALIS IN GREY SEALS (HALICHOERUS GRYPUS) AND HARBOR SEALS (PHOCA VITULINA) IN THE NETHERLANDS

2018 ◽  
Vol 54 (3) ◽  
pp. 439 ◽  
Author(s):  
Michiel V. Kroese ◽  
Lisa Beckers ◽  
Yvette J. W. M. Bisselink ◽  
Sophie Brasseur ◽  
Peter W. van Tulden ◽  
...  
Keyword(s):  
The Netherlands ◽  
Phoca Vitulina ◽  
Halichoerus Grypus ◽  
Harbor Seals

Albinistic common seals (Phoca vitulina) and melanistic grey seals (Halichoerus grypus) rehabilitated in the Netherlands

2010 ◽  
Vol 60 (3) ◽  
pp. 273-281 ◽  
Author(s):  
Nynke Osinga ◽  
Pieter 't Hart ◽  
Pieter van Voorst Vader
Keyword(s):  
The Netherlands ◽  
North Sea ◽  
Phoca Vitulina ◽  
Research Centre ◽  
Halichoerus Grypus ◽  
Normal Behaviour ◽  
Delta Area ◽  
The North ◽  
The North Sea ◽  
Photophobic Reaction

AbstractThe Seal Rehabilitation and Research Centre (SRRC) in Pieterburen, The Netherlands, rehabilitates seals from the waters of the Wadden Sea, North Sea and Southwest Delta area. Incidental observations of albinism and melanism in common and grey seals are known from countries surrounding the North Sea. However, observations on colour aberrations have not been systematically recorded. To obtain the frequency of occurrence of these colour aberrations, we analysed data of all seals admitted to our centre over the past 38 years. In the period 1971-2008, 3000 common seals (Phoca vitulina) were rehabilitated, as well as 1200 grey seals (Halichoerus grypus). A total of five albinistic common seals and four melanistic grey seals were identified. This results in an estimated incidence of albinism in common seals of approximately 1/600, and of melanism in grey seals of approximately 1/300. The seals displayed normal behaviour, although in the albinistic animals, a photophobic reaction was observed in daylight.

scholarly journals EPIZOOTIOLOGY OF MORBILLIVIRUS INFECTION IN NORTH AMERICAN HARBOR SEALS (PHOCA VITULINA) AND GRAY SEALS (HALICHOERUS GRYPUS)

1995 ◽  
Vol 31 (4) ◽  
pp. 491-501 ◽  
Author(s):  
Pádraig J. Duignan ◽  
Jeremiah T. Saliki ◽  
David J. St. Aubin ◽  
Greg Early ◽  
Samuel Sadove ◽  
...  
Keyword(s):  
North American ◽  
Phoca Vitulina ◽  
Halichoerus Grypus ◽  
Harbor Seals ◽  
Gray Seals

Long-Chain Monoethylenic and Other Fatty Acids in Heart, Liver, and Blubber Lipids of Two Harbor Seals (Phoca vitulina) and One Grey Seal (Halichoerus grypus)

1974 ◽  
Vol 31 (3) ◽  
pp. 333-341 ◽  
Author(s):  
R. G. Ackman ◽  
S. N. Hooper
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Phoca Vitulina ◽  
Dietary Factors ◽  
Halichoerus Grypus ◽  
Harbor Seals ◽  
Grey Seal ◽  
Organ Specific ◽  
Long Chain ◽  
Fatty Acid Compositions

The fatty acids of triglycerides in the hearts from two harbor seals (Phoca vitulina) and one grey seal (Halichoerus grypus) differed quantitatively in some details from those in the blubber. The 22:1 found in the heart triglycerides was about half that in the blubber triglycerides. Isomer distributions differed within 20:1 acids in the two triglycerides for both species, the higher proportion of 20:1ω11 fatty acid deposited in the heart than in the blubber indicating more active chain shortening from 22:1. The fatty acids of phospholipids of all three hearts and livers also differed quantitatively in some fatty acid details indicating organ-specific compositions. These also differed from compositions of similar lipids in terrestrial animals in their generally marine fatty acid compositions which were established for the blubbers. The grey seal (age 3 mo) showed unusual percentages of linoleic types of acids in the organ lipids and also a curious enrichment in ω7 monoethylenic acids. Dietary factors are believed to be responsible for differences between this animal and the two harbor seals (ages 10 and 23 mo).

Susceptibility of Grey (Halichoerus grypus) and Harp (Phoca groenlandica) Seals to the Influenza Virus and Mycoplasma of Epizootic Pneumonia of Harbor Seals (Phoca vitulina)

1984 ◽  
Vol 41 (1) ◽  
pp. 151-156 ◽  
Author(s):  
J. R. Geraci ◽  
D. j. St. Aubin ◽  
I. K. Barker ◽  
V. S. Hinshaw ◽  
R. G. Webster ◽  
...  
Keyword(s):  
Influenza Virus ◽  
New England ◽  
Influenza A ◽  
Phoca Vitulina ◽  
Lung Homogenate ◽  
Halichoerus Grypus ◽  
Harbor Seals ◽  
Eastern Canada ◽  
Cystophora Cristata ◽  
Phoca Groenlandica

Six grey, Halichoerus grypus, and 12 harp, Phoca groenlandica, seals were inoculated intratracheally with lung homogenate containing influenza virus A/seal/Mass/1/80 and mycoplasma from harbor seals, Phoca vitulina, which had died in an epizootic of pneumonia. The grey seals were refractory to infection, whereas some of the harp seals developed mild pneumonia. Virus was recovered from 4 of 10 harp seals necropsied, and antibodies were produced in 2 survivors. The mycoplasma given alone to 2 grey seals did not replicate or produce infection and was recovered from only 1 of 12 harp seals inoculated. We examined 99 grey, 102 harp, 14 harbor, and 7 hooded seals (Cystophora cristata) from eastern Canada and found antibodies to avian influenza A/seal/Mass/1/80 in 3 adult male grey seals from Sable Island, N.S.; this virus is apparently adaptable to other seal species. Related forms of the virus are highly suspect as the cause of past epizootics, and one is currently responsible for a new outbreak of pneumonia in New England harbor seals.

NEW APPROACH TO STRESS RESEARCH IN PHOCIDS—POTENTIAL OF DEHYDROEPIANDROSTERONE AND CORTISOL/DEHYDROEPIANDROSTERONE RATIO AS MARKERS FOR STRESS IN HARBOR SEALS (PHOCA VITULINA) AND GRAY SEALS (HALICHOERUS GRYPUS)

2018 ◽  
Vol 49 (3) ◽  
pp. 556-563 ◽  
Author(s):  
Neele Hendrika Gundlach ◽  
Marion Schmicke ◽  
Eva Ludes-Wehrmeister ◽  
Sophia Arlena Ulrich ◽  
Marcelo Gil Araujo ◽  
...  
Keyword(s):  
Phoca Vitulina ◽  
Halichoerus Grypus ◽  
Harbor Seals ◽  
New Approach ◽  
Stress Research ◽  
Gray Seals

Behavioral effects of environmental enrichment on harbor seals (Phoca vitulina concolor) and gray seals (Halichoerus grypus)

Zoo Biology ◽  
2002 ◽  
Vol 21 (4) ◽  
pp. 375-387 ◽  
Author(s):  
Sue A. Hunter ◽  
Monika S. Bay ◽  
Michele L. Martin ◽  
Jeff S. Hatfield
Keyword(s):  
Environmental Enrichment ◽  
Phoca Vitulina ◽  
Behavioral Effects ◽  
Halichoerus Grypus ◽  
Harbor Seals ◽  
Gray Seals

Patterns of Stranding and Mortality in Common Seals (Phoca vitulina) and Grey Seals (Halichoerus grypus) in The Netherlands between 1979 and 2008

2012 ◽  
Vol 147 (4) ◽  
pp. 550-565 ◽  
Author(s):  
N. Osinga ◽  
M.M. Shahi Ferdous ◽  
D. Morick ◽  
M. García Hartmann ◽  
J.A. Ulloa ◽  
...  
Keyword(s):  
The Netherlands ◽  
Phoca Vitulina ◽  
Halichoerus Grypus

Hearing Thresholds of Two Harbor Seals (Phoca vitulina) for Helicopter Dipping Sonar Signals (1.3-1.4 kHz)

2019 ◽  
Vol 45 (3) ◽  
pp. 349-355
Author(s):  
Ronald A. Kastelein ◽  
Robin Gransier ◽  
Marloe Brouwers ◽  
Lean Helder-Hoek
Keyword(s):  
Phoca Vitulina ◽  
Harbor Seals ◽  
Hearing Thresholds
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