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Ecological energetics of Eudyptes penguins at Marion Island
Includes bibliographies.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Percy FitzPatrick Institute of African Ornithology
2014
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| _version_ | 1867613236580319232 |
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| access_status_str | Open Access |
| author | Brown, Christopher Raymond |
| author2 | Siegfried, W R |
| author_browse | Brown, Christopher Raymond Siegfried, W R |
| author_facet | Siegfried, W R Brown, Christopher Raymond |
| author_sort | Brown, Christopher Raymond |
| collection | Thesis |
| description | Includes bibliographies. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/7594 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:56.154Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Percy FitzPatrick Institute of African Ornithology |
| publisherStr | Percy FitzPatrick Institute of African Ornithology |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/7594 Ecological energetics of Eudyptes penguins at Marion Island Brown, Christopher Raymond Siegfried, W R Zoology Includes bibliographies. Macaroni Penguins (Eudyptes chrysolophus) and Rockhopper Penguins (E. chrysocome) breed sympatrically at Marion Island in the sub-Antarctic, where they account for a substantial proportion of the avian biomass breeding at the island. This thesis documents the energy requirements of the two species during their respective breeding and moulting cycles at the island. Resting metabolic rates, calculated from lowest, stable rates of oxygen consumption over 24 h, averaged 25 % greater than basal metabolic rates predicted from allometric equations. Body temperatures of the penguins and the relationships between metabolic rates and temperature were investigated over a range of -10°C to 25°C. Lower critical temperature of Rockhopper Penguins was between 0°C and 5°C, but that of Macaroni Penguins could not be clearly ascertained. Measured metabolic rates of other species of penguins are reviewed and intra- and inter-specific differences in metabolic rates are discussed. In contrast to most penguins measured, individuals maintained in zoos or held in captivity for long periods had metabolic rates lower than predicted basal levels. 2014-09-22T07:53:19Z 2014-09-22T07:53:19Z 1987 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/7594 eng application/pdf Percy FitzPatrick Institute of African Ornithology Faculty of Science University of Cape Town |
| spellingShingle | Zoology Brown, Christopher Raymond Ecological energetics of Eudyptes penguins at Marion Island |
| thesis_degree_str | Doctoral |
| title | Ecological energetics of Eudyptes penguins at Marion Island |
| title_full | Ecological energetics of Eudyptes penguins at Marion Island |
| title_fullStr | Ecological energetics of Eudyptes penguins at Marion Island |
| title_full_unstemmed | Ecological energetics of Eudyptes penguins at Marion Island |
| title_short | Ecological energetics of Eudyptes penguins at Marion Island |
| title_sort | ecological energetics of eudyptes penguins at marion island |
| topic | Zoology |
| url | http://hdl.handle.net/11427/7594 |
| work_keys_str_mv | AT brownchristopherraymond ecologicalenergeticsofeudyptespenguinsatmarionisland |