scholarly journals To morphological description of cardiovascular system in pinnipeds (Pinnipedia)

2015 ◽  
Vol 182 (3) ◽  
pp. 69-80
Author(s):  
Alexey E. Kuzin
Keyword(s):  
Cardiac Tissue ◽  
Harbor Seal ◽  
Morphological Description ◽  
Callorhinus Ursinus ◽  
Entire Body ◽  
Eumetopias Jubatus ◽  
Sea Lion ◽  
Energy Expenditures ◽  
Phoca Largha ◽  
Fur Seal

Morphometric parameters of the heart, the absolute and relative caliber of the aortic arch and the major arterial trunks are determined for northern fur seal Callorhinus ursinus , Steller sea lion Eumetopias jubatus , spotted seal Phoca largha , harbor seal Phoca vitulina stejnegeri , and ribbon seal Histriophoca fasciata . The value of cardiac index, the thickness of ventricular wall, and the relative diameter of arterial trunks correlate well with energy expenditures of the entire body of mammals or their certain organs during the life cycle. The hypothesis is confirmed on seals’ adaptation to asphyxia by pronounced dilatation of the aorta ascending that ensures constant blood pressure and supports perfusion of brain and cardiac tissue.

New data on the number of northern fur seal ( Callorhinus ursinus), Steller sea lion ( Eumetopias jubatus), and spotted seal ( Phoca largha) at Tyuleny Island (Okhotsk Sea)

2014 ◽  
Vol 178 (3) ◽  
pp. 87-94
Author(s):  
Alexey E. Kuzin
Keyword(s):  
Steller Sea Lion ◽  
Callorhinus Ursinus ◽  
Okhotsk Sea ◽  
Eumetopias Jubatus ◽  
Northern Fur Seal ◽  
Sea Lion ◽  
Spotted Seal ◽  
Phoca Largha ◽  
Fur Seal ◽  
June July

The latest data on abundance and distribution of northern fur seal ( Callorhinus ursinus ), Steller sea lion ( Eumetopias jubatus ), and spotted seal ( Phoca largha ) at Tyuleny Island (Okhotsk Sea) are presented. The total counted number of fur seals was 115 thousand in June-July of 2013, including 5.0 thousand of bulls, 30.3 thousand of females, and 34.7 thousand of pups (31.5 thousand alive and 3.2 thousand dead). Decreasing of the females and pups number is observed during the last 4 years - they became lesser in 18.0 % or 4.5 % per year. The counted number of Steller sea lions was 1879 adults (including 119 bulls, and 1390 females, 68.5 % of them gave birth) and 890 pups. The reproductive group of Steller sea lion increases its abundance on the island due to numerous immigrants. Abundance of spotted seal was very various seasonally and even daily, its highest counted number was 162 individuals.

Histological development of the terminal airways in pinniped and sea otter lungs

1984 ◽  
Vol 62 (1) ◽  
pp. 92-96 ◽  
Author(s):  
Charles M. Drabek ◽  
Gerald L. Kooyman
Keyword(s):  
Histological Study ◽  
Fetal Lung ◽  
Harbor Seal ◽  
Sea Otter ◽  
Eumetopias Jubatus ◽  
Sea Lion ◽  
Terrestrial Environment ◽  
Fetal Lung Development ◽  
Neonatal Stage ◽  
Further Development

A histological study by light microscopy on the development of the terminal airways in fetal lungs of the harbor seal (Phoca vitulina), northern sea lion (Eumetopias jubatus), and sea otter (Enhydra lutris) showed the development of muscle and cartilaginous rings to occur late in gestation. At term they were still much less developed than in the terminal airways seen in adults. The most extensive reinforcement with cartilage of the terminal airways was observed in the sea lion lungs and the least in the seal lungs. The fetal lung development was contrasted with that of the porpoise. We conclude that unlike the porpoise, much further development of the terminal airways in pinnipeds and sea otters occurs during the neonatal stage when the animal is nondiving in a "terrestrial" environment.

Pricetrema phocae and Pricetrema eumetopii spp.n. (Trematoda: Heterophyidae) from pinnipeds in the North Pacific

1978 ◽  
Vol 56 (3) ◽  
pp. 382-385
Author(s):  
Larry M. Shults
Keyword(s):  
North Pacific ◽  
Harbor Seal ◽  
Phoca Vitulina ◽  
Steller Sea Lion ◽  
Eumetopias Jubatus ◽  
Sea Lion ◽  
The North ◽  
Phoca Vitulina Richardsi ◽  
The North Pacific

Pricetrema phocae and Pricetrema eumetopii spp.n. are described from the harbor seal, Phoca vitulina richardsi (Gray), and Steller sea lion, Eumetopias jubatus (Schreber), respectively.

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