Persistent Organochlorine Contaminants and Enantiomeric Signatures of Chiral Pollutants in Ringed Seals ( Phoca hispida ) Collected on the East and West Side of the Northwater Polynya, Canadian Arctic

2002 ◽  
Vol 42 (1) ◽  
pp. 118-126 ◽  
Author(s):  
A. T. Fisk, M. Holst, K. A. Hobson, J.
Keyword(s):  
Canadian Arctic ◽  
Phoca Hispida ◽  
West Side ◽  
Persistent Organochlorine ◽  
Ringed Seals ◽  
Organochlorine Contaminants ◽  
East And West

PERSISTENT ORGANOCHLORINE CONTAMINANTS IN RINGED SEALS (PHOCA HISPIDA) FROM THE KARA SEA, RUSSIAN ARCTIC

1998 ◽  
Vol 17 (9) ◽  
pp. 1745 ◽  
Author(s):  
Haruhiko Nakata ◽  
Shinsuke Tanabe ◽  
Ryo Tatsukawa ◽  
Yasuhiro Koyama ◽  
Nobuyuki Miyazaki ◽  
...  
Keyword(s):  
Kara Sea ◽  
Russian Arctic ◽  
Phoca Hispida ◽  
Persistent Organochlorine ◽  
Ringed Seals ◽  
Organochlorine Contaminants

Persistent organochlorine contaminants in ringed seals (Phoca hispida) from the Kara Sea, Russian Arctic

1998 ◽  
Vol 17 (9) ◽  
pp. 1745-1755 ◽  
Author(s):  
Haruhiko Nakata ◽  
Shinsuke Tanabe ◽  
Ryo Tatsukawa ◽  
Yasuhiro Koyama ◽  
Nobuyuki Miyazaki ◽  
...  
Keyword(s):  
Kara Sea ◽  
Russian Arctic ◽  
Phoca Hispida ◽  
Persistent Organochlorine ◽  
Ringed Seals ◽  
Organochlorine Contaminants

Trends of persistent organic pollutants in ringed seals (Phoca hispida) from the Canadian Arctic

2019 ◽  
Vol 665 ◽  
pp. 1135-1146 ◽  
Author(s):  
M. Houde ◽  
X. Wang ◽  
T.-L.L. Colson ◽  
P. Gagnon ◽  
S.H. Ferguson ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Canadian Arctic ◽  
Phoca Hispida ◽  
Ringed Seals

Spatial trends of perfluoroalkyl compounds in ringed seals (Phoca hispida) from the Canadian Arctic

2007 ◽  
Vol preprint (2007) ◽  
pp. 1 ◽  
Author(s):  
Craig Butt ◽  
Scott Mabury ◽  
Michael Kwan ◽  
Xiaowa Wang ◽  
Derek Muir
Keyword(s):  
Canadian Arctic ◽  
Phoca Hispida ◽  
Ringed Seals ◽  
Spatial Trends ◽  
Perfluoroalkyl Compounds

Temporal trends in “legacy” organochlorine contaminants in blubber of ringed seals (Phoca hispida) from Ulukhaktok, NT, Canada between 1972 and 2010

2014 ◽  
Vol 466-467 ◽  
pp. 564-576 ◽  
Author(s):  
R.F. Addison ◽  
D.C. Muir ◽  
M.G. Ikonomou ◽  
L. Harwood ◽  
T.G. Smith ◽  
...  
Keyword(s):  
Temporal Trends ◽  
Phoca Hispida ◽  
Ringed Seals ◽  
Organochlorine Contaminants

Functional Hematology of Ringed Seals (Phoca hispida) in the Canadian Arctic

1975 ◽  
Vol 32 (12) ◽  
pp. 2559-2564 ◽  
Author(s):  
J. R. Geraci ◽  
T. G. Smith
Keyword(s):  
Carrying Capacity ◽  
Canadian Arctic ◽  
White Cell ◽  
Blood Sampling ◽  
Blood Oxygen ◽  
Phoca Hispida ◽  
Ringed Seals ◽  
Oxygen Carrying Capacity ◽  
Very High

Hemograms from 20 netted and 6 shot ringed seals (Phoca hispida) were studied. Changes in red and white cell values in netted seals offer evidence for functioning sympathetic and adrenal–cortical stress pathways. The very high blood oxygen carrying capacity of ringed seals suggests that the animal is capable of deep or sustained dives. A technique for blood sampling from the vertebral "extradural" vein is described.

Mercury Trends in Ringed Seals(Phoca hispida)from the Western Canadian Arctic since 1973: Associations with Length of Ice-Free Season

2009 ◽  
Vol 43 (10) ◽  
pp. 3646-3651 ◽  
Author(s):  
A. Gaden ◽  
S.H. Ferguson ◽  
L. Harwood ◽  
H. Melling ◽  
G.A. Stern
Keyword(s):  
Canadian Arctic ◽  
Phoca Hispida ◽  
Ringed Seals

SPATIAL TRENDS OF PERFLUOROALKYL COMPOUNDS IN RINGED SEALS (PHOCA HISPIDA) FROM THE CANADIAN ARCTIC

2008 ◽  
Vol 27 (3) ◽  
pp. 542 ◽  
Author(s):  
Craig M. Butt ◽  
Scott A. Mabury ◽  
Michael Kwan ◽  
Xiaowa Wang ◽  
Derek C.G. Muir
Keyword(s):  
Canadian Arctic ◽  
Phoca Hispida ◽  
Ringed Seals ◽  
Spatial Trends ◽  
Perfluoroalkyl Compounds

scholarly journals Failure of reproduction in ringed seals (Phoca hispida) in Amundsen Gulf, Northwest Territories in 1984-1987

1998 ◽  
Vol 1 ◽  
pp. 197 ◽  
Author(s):  
Michael C S Kingsley ◽  
Tim J Byers
Keyword(s):  
Age Distribution ◽  
Canadian Arctic ◽  
Reproductive Activity ◽  
Phoca Hispida ◽  
First Birth ◽  
Ringed Seals ◽  
Amundsen Gulf ◽  
Almost All ◽  
Term Data

Ringed seals (Phoca hispida) in Thesiger Bay (about 71 °45'N, 125°00'W), in northwestern Amundsen Gulf in the western Canadian Arctic, suffered a failure of pup production in the years before 1987, starting probably in 1984. Pups taken in the summer hunt in the years before 1987 were reported scarce, and in 1987 were only 2.8% of the total 4+ and older. This low reproduction was associated with poor body condition in females and with an age distribution of adults that was weighted toward older animals (the modal year class was the 8+ class). An unusually high proportion of adult females had never reproduced; the median age of first birth was estimated at 8.6 years. By the summer of 1988 the age distribution had changed toward younger animals (modal age 5+), in better condition (by 20%), which had almost all ovulated. Pups were more numerous in the catch. In 1989 pups were very numerous in the catch (142% of the 4+ adults) and the estimated mean ageof first birth had decreased to 5.3 years; almost all 5-year-olds sampled had borne pups. A similar occurrence of low pup production had been documented in the early 1970s, and resumption of reproductive activity had then also been associated with an apparent turnover of the population, the mean age of adults decreasing from 16-17 years when reproduction was low to 10.9 years in the year before reproduction resumed. Long-term data on ringed seals in the western Canadian Arctic has shown an average age at first ovulation of about 5.55 years and first birth just before age 7, about 1 year older than seen in this sample in 1989. Our 1989 sample may have been able to mature earlier because food was temporarily more abundant, or breeding densities temporarily lower, than long-term average values.

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