Epidermal and papillary dermal characteristics of the bowhead whale (balaena mysticetus)
Abstract Skin samples from most body regions of the bowhead whale were examined. The epidermis is 2.7 to 50 times thicker than that reported in other cetaceans with both regional and individual variations in thickness. The thinnest areas examined (1 mm) occur on the eyelid margins and the thickest (...
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crwiley:10.1002/ar.1092110404 2024-09-09T19:31:32+00:00 Epidermal and papillary dermal characteristics of the bowhead whale (balaena mysticetus) Haldiman, Jerrold T. Henk, William G. Henry, Robert W. Albert, Thomas F. Abdelbaki, Yahya Z. Duffield, Dennis W. 1985 http://dx.doi.org/10.1002/ar.1092110404 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Far.1092110404 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ar.1092110404 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor The Anatomical Record volume 211, issue 4, page 391-402 ISSN 0003-276X 1097-0185 journal-article 1985 crwiley https://doi.org/10.1002/ar.1092110404 2024-08-09T04:23:06Z Abstract Skin samples from most body regions of the bowhead whale were examined. The epidermis is 2.7 to 50 times thicker than that reported in other cetaceans with both regional and individual variations in thickness. The thinnest areas examined (1 mm) occur on the eyelid margins and the thickest (25 mm) occur on the lower jaw. A distinctive parakeratotic stratuim corneum with a thick underlying stratum spinosum (without a stratum granulosum) extgends over the entire body surface. From a few dozen to several hundred epidermal lesions are present on all whales studied. A typical stratum basale of germinative keratinocytes (with melanocytes in pigmented areas) rests upon a well‐defined basal lamina. Epidermal rod arrays arise from the basal keratinocytes which cover highly elongated dermal papillae and extend to the epidermal surface through the distal stratum spinosum and the stratum corneum. At least four diatom genera occur on and in the stratum corneum and lesion areas of different whales. The superficial dermis consists of a papillary layer with long (up to 13 mm) dermal papillae interdigitating with the epidermis from a basal area that is 2–4 mm in thickness. The number of dermal papillae per mm 2 varies inversely with the thickness of the epidermis. Large diameter, sensory papillae packed with tortuous, highly elongated, encapsulated nerve end organs also interdigitate with the thin epidermal areas of the ventral surface of the rostrum, the upper and lower lip margins, and the upper and lower eyelid margins. Scattered, single, stiff hairs emerge from the skin only in specific, pigmented regions of the head. Article in Journal/Newspaper Balaena mysticetus bowhead whale Wiley Online Library The Anatomical Record 211 4 391 402 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Skin samples from most body regions of the bowhead whale were examined. The epidermis is 2.7 to 50 times thicker than that reported in other cetaceans with both regional and individual variations in thickness. The thinnest areas examined (1 mm) occur on the eyelid margins and the thickest (25 mm) occur on the lower jaw. A distinctive parakeratotic stratuim corneum with a thick underlying stratum spinosum (without a stratum granulosum) extgends over the entire body surface. From a few dozen to several hundred epidermal lesions are present on all whales studied. A typical stratum basale of germinative keratinocytes (with melanocytes in pigmented areas) rests upon a well‐defined basal lamina. Epidermal rod arrays arise from the basal keratinocytes which cover highly elongated dermal papillae and extend to the epidermal surface through the distal stratum spinosum and the stratum corneum. At least four diatom genera occur on and in the stratum corneum and lesion areas of different whales. The superficial dermis consists of a papillary layer with long (up to 13 mm) dermal papillae interdigitating with the epidermis from a basal area that is 2–4 mm in thickness. The number of dermal papillae per mm 2 varies inversely with the thickness of the epidermis. Large diameter, sensory papillae packed with tortuous, highly elongated, encapsulated nerve end organs also interdigitate with the thin epidermal areas of the ventral surface of the rostrum, the upper and lower lip margins, and the upper and lower eyelid margins. Scattered, single, stiff hairs emerge from the skin only in specific, pigmented regions of the head. |
format |
Article in Journal/Newspaper |
author |
Haldiman, Jerrold T. Henk, William G. Henry, Robert W. Albert, Thomas F. Abdelbaki, Yahya Z. Duffield, Dennis W. |
spellingShingle |
Haldiman, Jerrold T. Henk, William G. Henry, Robert W. Albert, Thomas F. Abdelbaki, Yahya Z. Duffield, Dennis W. Epidermal and papillary dermal characteristics of the bowhead whale (balaena mysticetus) |
author_facet |
Haldiman, Jerrold T. Henk, William G. Henry, Robert W. Albert, Thomas F. Abdelbaki, Yahya Z. Duffield, Dennis W. |
author_sort |
Haldiman, Jerrold T. |
title |
Epidermal and papillary dermal characteristics of the bowhead whale (balaena mysticetus) |
title_short |
Epidermal and papillary dermal characteristics of the bowhead whale (balaena mysticetus) |
title_full |
Epidermal and papillary dermal characteristics of the bowhead whale (balaena mysticetus) |
title_fullStr |
Epidermal and papillary dermal characteristics of the bowhead whale (balaena mysticetus) |
title_full_unstemmed |
Epidermal and papillary dermal characteristics of the bowhead whale (balaena mysticetus) |
title_sort |
epidermal and papillary dermal characteristics of the bowhead whale (balaena mysticetus) |
publisher |
Wiley |
publishDate |
1985 |
url |
http://dx.doi.org/10.1002/ar.1092110404 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Far.1092110404 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ar.1092110404 |
genre |
Balaena mysticetus bowhead whale |
genre_facet |
Balaena mysticetus bowhead whale |
op_source |
The Anatomical Record volume 211, issue 4, page 391-402 ISSN 0003-276X 1097-0185 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ar.1092110404 |
container_title |
The Anatomical Record |
container_volume |
211 |
container_issue |
4 |
container_start_page |
391 |
op_container_end_page |
402 |
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1809900352455049216 |