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Pelage insulation in mustelids : Hair density and morphology of medulla in mustelids

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/77396

Title: Pelage insulation in mustelids : Hair density and morphology of medulla in mustelids
Authors: Kondo, Keiji Browse this author
Keywords: pelag
insulation
hair density
hair medulla
Mustelidae
Issue Date: Mar-2020
Publisher: Research Faculty of Agriculture, Hokkaido University
Journal Title: Journal of the Research Faculty of Agriculture, Hokkaido University
Volume: 75
Start Page: 1
End Page: 9
Abstract: Pelage insulation depends on the density and length of hair. Hair density is an important factor for determining the quality of fur and to help mammals adapt to their habitat. This study measured hair density and observed the morphology of the medulla in pelage of Japanese mustelids. Hair density was calculated from the number of hairs per hair bundle and the number of hair bundles per cm2. Morphological observations of the medulla were made with a scanning electron microscope(SEM). The hair density was highest in the sea otter(Enhydra lutris),followed by the river otter(Lutra lutra),the mink(Neovison vison),the ermine(Mustela earminea),the sable(Martes zibellina),the Japanese weasel (Mustela itatsi ),and the least weasel(Mustela nivalis ). The morphology of the medulla varied more than expected. This suggests that the medulla morphology could be used to identify a species in mammals. This study suggests the possibility for clarifying whether hair density and the morphology of the medulla depend upon taxonomy or habitat,by examining the pelage of species inhabiting different environments.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/77396
Appears in Collections:Journal of the Graduate School of Agriculture, Hokkaido University > Vol.75

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