GROWTH AND DEVELOPMENT IN FREE-RANGING HARBOR SEAL (PHOCA VITULINA) PUPS FROM SOUTHERN BRITISH COLUMBIA, CANADA

2002 ◽  
Vol 18 (3) ◽  
pp. 721-733 ◽  
Author(s):  
Paul E. Cottrell ◽  
Steven Jeffries ◽  
Brian Beck ◽  
Peter S. Ross
Keyword(s):  
British Columbia ◽  
Growth And Development ◽  
Harbor Seal ◽  
Phoca Vitulina ◽  
Free Ranging

scholarly journals IMMUNE FUNCTION IN FREE-RANGING HARBOR SEAL (PHOCA VITULINA) MOTHERS AND THEIR PUPS DURING LACTATION

1993 ◽  
Vol 29 (1) ◽  
pp. 21-29 ◽  
Author(s):  
P. S. Ross ◽  
B. Pohajdak ◽  
W. D. Bowen ◽  
R. F. Addison
Keyword(s):  
Immune Function ◽  
Harbor Seal ◽  
Phoca Vitulina ◽  
Free Ranging

Biomagnification of polychlorinated biphenyls in a harbor seal (Phoca vitulina) food web from the strait of Georgia, British Columbia, Canada

2012 ◽  
Vol 31 (11) ◽  
pp. 2445-2455 ◽  
Author(s):  
Donna L. Cullon ◽  
Mark B. Yunker ◽  
Jennie R. Christensen ◽  
Robie W. Macdonald ◽  
Michael J. Whiticar ◽  
...  
Keyword(s):  
British Columbia ◽  
Polychlorinated Biphenyls ◽  
Food Web ◽  
Harbor Seal ◽  
Phoca Vitulina ◽  
Strait Of Georgia

Comparison of the Somatotropic Axis in Free-ranging and Rehabilitated Harbor Seal Pups (Phoca vitulina)

2008 ◽  
Vol 39 (3) ◽  
pp. 342-348 ◽  
Author(s):  
Julie P. Richmond ◽  
John Skinner ◽  
James Gilbert ◽  
Lisa M. Mazzaro ◽  
Steven A. Zinn
Keyword(s):  
Harbor Seal ◽  
Phoca Vitulina ◽  
Somatotropic Axis ◽  
Free Ranging

Clear diel patterns in breeding calls of harbor seals (Phoca vitulina) at Hornby Island, British Columbia, Canada

2018 ◽  
Vol 96 (11) ◽  
pp. 1236-1243
Author(s):  
Katrina Nikolich ◽  
Héloïse Frouin-Mouy ◽  
Alejandro Acevedo-Gutiérrez
Keyword(s):  
British Columbia ◽  
Foraging Behavior ◽  
Breeding Season ◽  
Light Level ◽  
Harbor Seal ◽  
Phoca Vitulina ◽  
Harbor Seals ◽  
Female Behavior ◽  
Nocturnal Foraging ◽  
Male Calling

During the breeding season, male harbor seals (Phoca vitulina Linnaeus, 1758) produce underwater calls for sexual advertisement. The daily and seasonal timing of these calls is influenced by female availability (i.e., tidal haul-out patterns, foraging behavior, and oestrus cycle). Therefore, temporal patterns of male calling can provide clues about patterns of female behavior. We collected underwater recordings during the 2014 breeding season at Hornby Island, British Columbia, Canada, and examined the relationships of light level, progression of breeding season, and tide relative to call presence or absence and calling rate. Calls were 15 times more likely to occur at night than during the day. Nocturnal peaks in calling rate have been observed in other harbor seal populations and have been attributed to tidal haul-out patterns and nocturnal foraging of females. In this study, tide level did not have a significant effect on calling rate, and female foraging behavior was not monitored. One acoustic observation of mammal-eating killer whale (Orcinus orca (Linnaeus, 1758)) calls was followed by 48 h of decreased calling rate. We infer that predation risk influences the temporal pattern of male calling at this location and suggest further study to support this hypothesis.

scholarly journals Lungworm infection with Otostrongylus circumlitus in a free-ranging harbor seal (Phoca vitulina)

2021 ◽  
Vol 90 (4) ◽  
pp. 182-188
Author(s):  
L. Geerinckx ◽  
A. Jonker ◽  
L. Van Brantegem ◽  
P. De Laender ◽  
N. De Wilde ◽  
...  
Keyword(s):  
Pulmonary Arteries ◽  
Harbor Seal ◽  
Phoca Vitulina ◽  
Right Heart ◽  
The North ◽  
Verminous Pneumonia ◽  
The North Sea ◽  
Otostrongylus Circumlitus ◽  
Free Ranging ◽  
Gross Examination

A young wild harbor seal (Phoca vitulina) was found stranded on the North Sea coast at Kok- sijde (Belgium)and was admitted to a rehabilitation center where it died one day later. Full ne- cropsy with histopathology was performed. Gross examination revealed severe diffuse hemorr- hagic and emphysematous pneumonia with the presence of 6-10 cm-large nematodes. The nema- todes were found in the trachea, large bronchi, right heart and pulmonary arteries, and subsequently identified as Otostrongylus circumlitus. Histologic examination demonstrated severe eosinophilic to granulomatous bronchointerstitial pneumonia with intralesional nematodes. It was concluded that the seal died of severe verminous pneumonia. In this case report, the importance of lungworm infection, which is a common and critical disease in young seals, is highlighted.

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