Papillomatous Skin Netting of Cetaceans (Cetacea: Delphinapterus leucas, Balaena mysticetus, and Eschrichtius robustus) and Sirens (Sirenia: Trichechus manatus and Dugong dugon)

The structure of the papillomatous junction between epidermis and dermis (papillomatous netting, PN) in the skin of cetaceans (white whales, bowhead, and gray whales) and sirens (American manatee, dugong) was studied and compared using histophysiological and morphogeometric methods. The relative ext...

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Bibliographic Details
Published in:Doklady. Biological sciences 2018-07, Vol.481 (1), p.150-156
Main Authors: Chernova, O. F., Kiladze, A. B., Shpak, O. V.
Format: Article
Language:English
Subjects:
Animals
Balaena mysticetus
Beluga Whale - metabolism
Biomedical and Life Sciences
Bowhead Whale - metabolism
Cetacea
Compression
Delphinapterus leucas
Dermis
Dugong - metabolism
Dugong dugon
Epidermis
Epidermis - metabolism
Eschrichtius robustus
Evolutionary Biology
General Biology
Life Sciences
Plant Sciences
Sirenia
Sirenia - metabolism
Skin
Skin - metabolism
Trichechus manatus
Trichechus manatus - metabolism
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Summary:The structure of the papillomatous junction between epidermis and dermis (papillomatous netting, PN) in the skin of cetaceans (white whales, bowhead, and gray whales) and sirens (American manatee, dugong) was studied and compared using histophysiological and morphogeometric methods. The relative extent of PN development proved to be similar in members of both orders, but significant differences were found in PN configuration, the volume of “free area of grille”, the degree of skin vertical compression, and skin density, which influence buoyancy. The differences are discussed from the viewpoint of species biology.
ISSN:0012-4966
1608-3105
DOI:10.1134/S001249661804004X