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.

Present-Day Assemblage of Birds and Mammals in the Islands of Four Mountains, Eastern Aleutians, Alaska

2018 ◽  
Vol 91 (03) ◽  
pp. 1059-1074 ◽  
Author(s):  
Nora A. Rojek ◽  
Jeffrey C. Williams
Keyword(s):  
Marine Mammals ◽  
Red Fox ◽  
Bird Species ◽  
Harbor Seal ◽  
Sea Otter ◽  
Archaeological Record ◽  
Sea Lion ◽  
Mammal Fauna ◽  
Land Mammal ◽  
Insight Into

AbstractWe compiled present-day observations and survey data of the avian and mammal fauna in the Islands of Four Mountains, Alaska, which primarily consist of marine-adapted species, to provide insight into the prehistoric fauna found in the archaeological record. We documented 63 bird species, mainly seabirds (67%). The majority (71%) of the estimated number of breeding birds are ledge nesters, predominately murres, and most (68%) spend the majority of their lives in the offshore environment. We lack good estimates for burrow and crevice nesters, which were impacted by and are still recovering from a period of arctic fox farming in the twentieth century. Marine mammals, predominately Steller sea lion, harbor seal, and sea otter, primarily use accessible land as haul-outs and are found in low numbers compared with the rest of the Aleutians. Red fox, the only land mammal, presently only reside on Chuginadak Island. While the present-day fauna is similar to the fauna recorded in the archaeological record, we found no indication of nesting by ancient murrelets and northern fulmars in the Island of Four Mountains, whereas both species were present in midden sites on Carlisle and Chuginadak Islands, with the possibility of prehistoric breeding colonies on Carlisle Island.

scholarly journals Sea Otter, Enhydra lutris, Sightings off Haida Gwaii / Queen Charlotte Islands, British Columbia, 1972-2002

2004 ◽  
Vol 118 (2) ◽  
pp. 270
Author(s):  
Kimberly Raum-Suryan ◽  
Kenneth Pitcher ◽  
Richard Lamy
Keyword(s):  
British Columbia ◽  
Steller Sea Lion ◽  
Sea Otter ◽  
Eumetopias Jubatus ◽  
Enhydra Lutris ◽  
Haida Gwaii ◽  
Sea Lion ◽  
Sea Otters ◽  
The Past ◽  
Queen Charlotte Islands

On 27 June 2001 we observed and photographed a Sea Otter (Enhydra lutris) adjacent to a Steller Sea Lion (Eumetopias jubatus) haulout near Sgang Gwaay (Anthony Island), Haida Gwaii / Queen Charlotte Islands. This is one of only eight documented sightings of Sea Otters in these waters during the past 30 years. These sightings may represent the beginning of the expansion of Sea Otters to their former range off Haida Gwaii.

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.

scholarly journals Dermatophytosis in a Steller Sea Lion (Eumetopias jubatus).

1994 ◽  
Vol 56 (3) ◽  
pp. 551-553 ◽  
Author(s):  
Eri TANAKA ◽  
Takahiro KIMURA ◽  
Sinpei WADA ◽  
Kisio HATAI ◽  
Seizaburou SONODA
Keyword(s):  
Steller Sea Lion ◽  
Eumetopias Jubatus ◽  
Sea Lion

Fetal lung development via quantitative biomarkers from diffusion MRI and histological validation in rhesus macaques

2021 ◽  
Author(s):  
Nara S. Higano ◽  
Xuefeng Cao ◽  
Jinbang Guo ◽  
Xiaojie Wang ◽  
Christopher D. Kroenke ◽  
...  
Keyword(s):  
Lung Development ◽  
Diffusion Mri ◽  
Rhesus Macaques ◽  
Fetal Lung ◽  
Fetal Lung Development ◽  
Histological Validation
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