Structure, development and composition of the integument of the southern right whale, Eubalaena australis
The general architecture of the skin of the southern right whale, Eubalaena australis, is comparable to that described for other cetacean species. As found in bowhead whales, Balaena mysticetus, of the same family, southern right whales possess an acanthotic epidermis and a notably thick hypodermis....
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ftunivpretoria:oai:repository.up.ac.za:2263/29885 2023-05-15T14:02:58+02:00 Structure, development and composition of the integument of the southern right whale, Eubalaena australis Reeb, Desray Best, Peter B. Webb, E.C. (Edward Cottington) Van Aarde, Rudi J. 2013-09-07T17:05:20Z http://hdl.handle.net/2263/29885 http://upetd.up.ac.za/thesis/available/etd-11282005-092808/ unknown University of Pretoria http://hdl.handle.net/2263/29885 Reeb, D 2001, Structure, development and composition of the integument of the southern right whale, Eubalaena australis, PhD thesis, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/29885 > H826/ag http://upetd.up.ac.za/thesis/available/etd-11282005-092808/ © 2001 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. Eubalaena australis Southern right whale epidermis UCTD Thesis 2013 ftunivpretoria 2022-05-31T13:24:22Z The general architecture of the skin of the southern right whale, Eubalaena australis, is comparable to that described for other cetacean species. As found in bowhead whales, Balaena mysticetus, of the same family, southern right whales possess an acanthotic epidermis and a notably thick hypodermis. Epidermal rods and extensive papillomatosis support these unique characteristics. A "fat-free" reticular dermis makes the integument of southern right whales more like that of odontocetes than that described for balaenopterids. Skin samples taken in South African and Antarctic waters showed evidence of superficial moultin'g throughout the austral winter and in mid-summer. Unidentified "microfIora" and fungal microbes were detected on the skin of whales sampled in both South African and Antarctic waters. The predominance of "microfIoral" aggregations on cows and calves in OctoberlNovember suggests that these micro-organisms are acquired in coastal waters. A Candida-like invasive fungal infestation of the skin of a stranded neonate was recorded for the first time in this species and may be related to the demise of this animal. The film-forming diatom, Bennettella [Cocconeis] ceticola, was not detected on any skin samples. This may imply that southern right whales exhibit high cellular proliferation rates, which prevent diatomaceous films from forming. Neonatal southern right whales undergo a spectacular form of ecdysis approximately 6-7 days after birth. Histologically, "rough-skinned" neonates possess a distinct "fault line" above the distal tips of the dermal papillae, that becomes characterised by intercellular oedema, which causes all the cell layers above the plane to separate from those below it. The fatty acid composition of the dermal and hypodermal layers provides indications of prey species consumed as well as reflecting physiological processes within the digestive system of the southern right whale. Total lipid values in the blubber of late season cows and calves are reported for the first time. A new ... Thesis Antarc* Antarctic Balaena mysticetus Southern Right Whale University of Pretoria: UPSpace Antarctic Austral |
institution |
Open Polar |
collection |
University of Pretoria: UPSpace |
op_collection_id |
ftunivpretoria |
language |
unknown |
topic |
Eubalaena australis Southern right whale epidermis UCTD |
spellingShingle |
Eubalaena australis Southern right whale epidermis UCTD Reeb, Desray Structure, development and composition of the integument of the southern right whale, Eubalaena australis |
topic_facet |
Eubalaena australis Southern right whale epidermis UCTD |
description |
The general architecture of the skin of the southern right whale, Eubalaena australis, is comparable to that described for other cetacean species. As found in bowhead whales, Balaena mysticetus, of the same family, southern right whales possess an acanthotic epidermis and a notably thick hypodermis. Epidermal rods and extensive papillomatosis support these unique characteristics. A "fat-free" reticular dermis makes the integument of southern right whales more like that of odontocetes than that described for balaenopterids. Skin samples taken in South African and Antarctic waters showed evidence of superficial moultin'g throughout the austral winter and in mid-summer. Unidentified "microfIora" and fungal microbes were detected on the skin of whales sampled in both South African and Antarctic waters. The predominance of "microfIoral" aggregations on cows and calves in OctoberlNovember suggests that these micro-organisms are acquired in coastal waters. A Candida-like invasive fungal infestation of the skin of a stranded neonate was recorded for the first time in this species and may be related to the demise of this animal. The film-forming diatom, Bennettella [Cocconeis] ceticola, was not detected on any skin samples. This may imply that southern right whales exhibit high cellular proliferation rates, which prevent diatomaceous films from forming. Neonatal southern right whales undergo a spectacular form of ecdysis approximately 6-7 days after birth. Histologically, "rough-skinned" neonates possess a distinct "fault line" above the distal tips of the dermal papillae, that becomes characterised by intercellular oedema, which causes all the cell layers above the plane to separate from those below it. The fatty acid composition of the dermal and hypodermal layers provides indications of prey species consumed as well as reflecting physiological processes within the digestive system of the southern right whale. Total lipid values in the blubber of late season cows and calves are reported for the first time. A new ... |
author2 |
Best, Peter B. Webb, E.C. (Edward Cottington) Van Aarde, Rudi J. |
format |
Thesis |
author |
Reeb, Desray |
author_facet |
Reeb, Desray |
author_sort |
Reeb, Desray |
title |
Structure, development and composition of the integument of the southern right whale, Eubalaena australis |
title_short |
Structure, development and composition of the integument of the southern right whale, Eubalaena australis |
title_full |
Structure, development and composition of the integument of the southern right whale, Eubalaena australis |
title_fullStr |
Structure, development and composition of the integument of the southern right whale, Eubalaena australis |
title_full_unstemmed |
Structure, development and composition of the integument of the southern right whale, Eubalaena australis |
title_sort |
structure, development and composition of the integument of the southern right whale, eubalaena australis |
publisher |
University of Pretoria |
publishDate |
2013 |
url |
http://hdl.handle.net/2263/29885 http://upetd.up.ac.za/thesis/available/etd-11282005-092808/ |
geographic |
Antarctic Austral |
geographic_facet |
Antarctic Austral |
genre |
Antarc* Antarctic Balaena mysticetus Southern Right Whale |
genre_facet |
Antarc* Antarctic Balaena mysticetus Southern Right Whale |
op_relation |
http://hdl.handle.net/2263/29885 Reeb, D 2001, Structure, development and composition of the integument of the southern right whale, Eubalaena australis, PhD thesis, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/29885 > H826/ag http://upetd.up.ac.za/thesis/available/etd-11282005-092808/ |
op_rights |
© 2001 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
_version_ |
1766273420392136704 |