Results 231 to 240 of about 330,338 (279)

Comparative temporary threshold shifts in a harbor porpoise and harbor seal, and severe shift in a seal

The Journal of the Acoustical Society of America, 2013
Anthropogenic noise may cause temporary hearing threshold shifts (TTSs) in marine mammals. Tests with identical methods show that harbor porpoises are more susceptible to TTS induced by octave-band white noise (OBN) centered around 4 kHz than harbor seals, although their unmasked (basic) hearing thresholds for that frequency are similar.
Ronald A, Kastelein, Robin, Gransier, Lean, Hoek   +2 more
openaire   +2 more sources

Pox in Young, Captive Harbor Seals

Journal of the American Veterinary Medical Association, 1972
SUMMARY During a period of 3 to 5 weeks, nodules appeared on the skin of 7 captive harbor seals. A poxvirus was demonstrated ultrastructurally in typical lesions. All except one seal survived the disease. Similarities between pox and cutaneous streptothricosis in seals are presented.
T M, Wilson, R W, Dykes, K S, Tsai
openaire   +2 more sources

Patterns in the vocalizations of male harbor seals

The Journal of the Acoustical Society of America, 2003
Comparative analyses of the roar vocalization of male harbor seals from ten sites throughout their distribution showed that vocal variation occurs at the oceanic, regional, population, and subpopulation level. Genetic barriers based on the physical distance between harbor seal populations present a likely explanation for some of the observed vocal ...
Van Parijs, S.M., Corkeron, P.J., Harvey, J., Hayes, S.A., Mellinger, D.K., Rouget, P.A., Thompson, P.M., Wahlberg, M., Kovacs, K.M.   +8 more
openaire   +3 more sources

Mandibular Fracture Repair in a Harbor Seal

Journal of Veterinary Dentistry, 2007
A 30-year-old captive female harbor seal (Phoca vitulina) bit down upon a metal ring within a hoop-net normally used to assist in securing the seal for routine physical examination. Radiographic examination performed under general anesthesia revealed a unilateral closed fracture of the rostral left mandible between the first and second premolar teeth ...
Daniel, Lewer, Scott B, Gustafson, Paul M, Rist, Steven, Brown   +3 more
openaire   +2 more sources

LYMPHOSARCOMA IN A HARBOR SEAL (Phoca vitulina richardii)

Journal of Wildlife Diseases, 1980
Lymphosarcoma is described in a wild juvenile harbor seal (Phoca vitulina richardii). Gross lesions included hepatomegaly, splenomegaly and lymphadenopathy. Neoplastic lymphoid cells were observed histologically in lung, kidney, liver, spleen, adrenals, bone marrow and visceral and peripheral lymph nodes.
R K, Stroud, D R, Stevens
openaire   +2 more sources

Interactions of Respiration and the Bradycardia of Submersion in Harbor Seals

Canadian Journal of Physiology and Pharmacology, 1975
Six harbor seals with percutaneous tracheostomies were artificially ventilated while immersed. Changes in the oxygen content of the inspired gas and in the minute-volume altered the magnitude of the bradycardia observed after the animal had been submerged for 30 s. The average heart rate in five seals changed from 16.7 (S.D.
D G, Tanji, J, Weste, R W, Dykes
openaire   +2 more sources

Phoca vitulina (Harbor seal)

1973
The karyotype of the female is a gift from Dr. U. Arnason, Lund, Sweden, and was prepared with the orcein squash method. The karyotype of the male was prepared by airdry method.
T. C. Hsu, Kurt Benirschke
openaire   +1 more source

Enzymatic adaptations to asphyxia in the harbor seal and dog

Respiration Physiology, 1984
The activities of the glycolytic enzymes were determined in heart, liver, kidney cortex and cerebrum from the harbor seal (Phoca vitulina ) and the adult and newborn dog. Activities were similar in the four dog tissues as well as myocardium and brain tissue from both the newborn dog and seal.
H W, Behrisch, R, Elsner
openaire   +2 more sources

Cerebral tolerance to asphyxial hypoxia in the harbor seal

Respiration Physiology, 1973
Abstract Young unanesthetized restrained harbor seals, Phoca vitulina were subjected to simulated maximum dives by submerging their heads until the appearance of reversible characteristic hypoxic patterns in their electroencephalogram (EEG endpoint).
D, Kerem, R, Elsner
openaire   +2 more sources

AN OUTBREAK OF A HERPESVIRUS INFECTION IN HARBOR SEALS (PHOCA VITULINA)

Journal of Wildlife Diseases, 1986
During an outbreak of a herpesvirus infection in juvenile harbor seals, 11 out of 23 seals died. The duration of the disease in these 11 animals varied from 1-6 days. Nasal discharge, inflammation of the oral mucosa, vomiting, diarrhea and fever up to 40 degrees C were observed in the first days of the disease.
Borst, GHA, Walvoort, HC, Reijnders, PJH, van der Kamp, JS, Osterhaus, ADME   +4 more
openaire   +3 more sources