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 ◽  
...  
2010 ◽  
Vol 60 (3) ◽  
pp. 273-281 ◽  
Author(s):  
Nynke Osinga ◽  
Pieter 't Hart ◽  
Pieter van Voorst Vader

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.


1995 ◽  
Vol 31 (4) ◽  
pp. 491-501 ◽  
Author(s):  
Pádraig J. Duignan ◽  
Jeremiah T. Saliki ◽  
David J. St. Aubin ◽  
Greg Early ◽  
Samuel Sadove ◽  
...  

1974 ◽  
Vol 31 (3) ◽  
pp. 333-341 ◽  
Author(s):  
R. G. Ackman ◽  
S. N. Hooper

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).


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 ◽  
...  

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.


2018 ◽  
Vol 49 (3) ◽  
pp. 556-563 ◽  
Author(s):  
Neele Hendrika Gundlach ◽  
Marion Schmicke ◽  
Eva Ludes-Wehrmeister ◽  
Sophia Arlena Ulrich ◽  
Marcelo Gil Araujo ◽  
...  

Zoo Biology ◽  
2002 ◽  
Vol 21 (4) ◽  
pp. 375-387 ◽  
Author(s):  
Sue A. Hunter ◽  
Monika S. Bay ◽  
Michele L. Martin ◽  
Jeff S. Hatfield

2012 ◽  
Vol 147 (4) ◽  
pp. 550-565 ◽  
Author(s):  
N. Osinga ◽  
M.M. Shahi Ferdous ◽  
D. Morick ◽  
M. García Hartmann ◽  
J.A. Ulloa ◽  
...  

2019 ◽  
Vol 45 (3) ◽  
pp. 349-355
Author(s):  
Ronald A. Kastelein ◽  
Robin Gransier ◽  
Marloe Brouwers ◽  
Lean Helder-Hoek

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