Fur seals at Macquarie Island: post-sealing colonisation, trends in abundance and hybridisation of three species
© Springer-Verlag 2009 Commercial sealers exterminated the original fur seal population at Macquarie Island in the early 1800s. The first breeding record since the sealing era was not reported until March 1955. Three species of fur seal now occur at Macquarie Island, the Antarctic (Arctocephalus gaz...
Published in: | Polar Biology |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer-Verlag
2009
|
Subjects: | |
Online Access: | http://hdl.handle.net/2440/57045 https://doi.org/10.1007/s00300-009-0645-y |
id |
ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/57045 |
---|---|
record_format |
openpolar |
spelling |
ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/57045 2023-12-17T10:20:00+01:00 Fur seals at Macquarie Island: post-sealing colonisation, trends in abundance and hybridisation of three species Goldsworthy, S. McKenzie, J. Page, B. Lancaster, M. Shaughnessy, P. Wynen, L. Robinson, S. Peters, K. Baylis, A. McIntosh, R. 2009 http://hdl.handle.net/2440/57045 https://doi.org/10.1007/s00300-009-0645-y en eng Springer-Verlag Polar Biology, 2009; 32(10):1473-1486 0722-4060 1432-2056 http://hdl.handle.net/2440/57045 doi:10.1007/s00300-009-0645-y http://dx.doi.org/10.1007/s00300-009-0645-y Fur seals Arctocephalus spp Macquarie Island Population recovery Hybridisation Colonisation Journal article 2009 ftunivadelaidedl https://doi.org/10.1007/s00300-009-0645-y 2023-11-20T23:26:04Z © Springer-Verlag 2009 Commercial sealers exterminated the original fur seal population at Macquarie Island in the early 1800s. The first breeding record since the sealing era was not reported until March 1955. Three species of fur seal now occur at Macquarie Island, the Antarctic (Arctocephalus gazella), subantarctic (A. tropicalis) and New Zealand (A. forsteri) fur seal. Census data from 54 breeding seasons in the period 1954–2007 were used to estimate population status and growth for each species. Between the 1950s and 1970s, annual increases in pup production for the species aggregate were low. Between 1986 and 2007, pup production of Antarctic fur seals increased by about 8.8% per year and subantarctic fur seals by 6.8% per year. The New Zealand fur seal, although the most numerous fur seal species on Macquarie Island, has yet to establish a breeding population, due to the absence of reproductively mature females. Hybridisation among species is significant, but appears to be declining. The slow establishment and growth of fur seal populations on Macquarie Island appears to have been affected by its distance from major population centres and hence low immigration rates, asynchronous colonisation times of males and females of each species, and extensive hybridisation. Simon David Goldsworthy, Jane McKenzie, Brad Page, Melanie L. Lancaster, Peter D. Shaughnessy, Louise P. Wynen, Susan A. Robinson, Kristian J. Peters, Alastair M. M. Baylis and Rebecca R. McIntosh Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Macquarie Island Polar Biology The University of Adelaide: Digital Library Antarctic McIntosh ENVELOPE(168.683,168.683,-77.517,-77.517) New Zealand The Antarctic Polar Biology 32 10 1473 1486 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
Fur seals Arctocephalus spp Macquarie Island Population recovery Hybridisation Colonisation |
spellingShingle |
Fur seals Arctocephalus spp Macquarie Island Population recovery Hybridisation Colonisation Goldsworthy, S. McKenzie, J. Page, B. Lancaster, M. Shaughnessy, P. Wynen, L. Robinson, S. Peters, K. Baylis, A. McIntosh, R. Fur seals at Macquarie Island: post-sealing colonisation, trends in abundance and hybridisation of three species |
topic_facet |
Fur seals Arctocephalus spp Macquarie Island Population recovery Hybridisation Colonisation |
description |
© Springer-Verlag 2009 Commercial sealers exterminated the original fur seal population at Macquarie Island in the early 1800s. The first breeding record since the sealing era was not reported until March 1955. Three species of fur seal now occur at Macquarie Island, the Antarctic (Arctocephalus gazella), subantarctic (A. tropicalis) and New Zealand (A. forsteri) fur seal. Census data from 54 breeding seasons in the period 1954–2007 were used to estimate population status and growth for each species. Between the 1950s and 1970s, annual increases in pup production for the species aggregate were low. Between 1986 and 2007, pup production of Antarctic fur seals increased by about 8.8% per year and subantarctic fur seals by 6.8% per year. The New Zealand fur seal, although the most numerous fur seal species on Macquarie Island, has yet to establish a breeding population, due to the absence of reproductively mature females. Hybridisation among species is significant, but appears to be declining. The slow establishment and growth of fur seal populations on Macquarie Island appears to have been affected by its distance from major population centres and hence low immigration rates, asynchronous colonisation times of males and females of each species, and extensive hybridisation. Simon David Goldsworthy, Jane McKenzie, Brad Page, Melanie L. Lancaster, Peter D. Shaughnessy, Louise P. Wynen, Susan A. Robinson, Kristian J. Peters, Alastair M. M. Baylis and Rebecca R. McIntosh |
format |
Article in Journal/Newspaper |
author |
Goldsworthy, S. McKenzie, J. Page, B. Lancaster, M. Shaughnessy, P. Wynen, L. Robinson, S. Peters, K. Baylis, A. McIntosh, R. |
author_facet |
Goldsworthy, S. McKenzie, J. Page, B. Lancaster, M. Shaughnessy, P. Wynen, L. Robinson, S. Peters, K. Baylis, A. McIntosh, R. |
author_sort |
Goldsworthy, S. |
title |
Fur seals at Macquarie Island: post-sealing colonisation, trends in abundance and hybridisation of three species |
title_short |
Fur seals at Macquarie Island: post-sealing colonisation, trends in abundance and hybridisation of three species |
title_full |
Fur seals at Macquarie Island: post-sealing colonisation, trends in abundance and hybridisation of three species |
title_fullStr |
Fur seals at Macquarie Island: post-sealing colonisation, trends in abundance and hybridisation of three species |
title_full_unstemmed |
Fur seals at Macquarie Island: post-sealing colonisation, trends in abundance and hybridisation of three species |
title_sort |
fur seals at macquarie island: post-sealing colonisation, trends in abundance and hybridisation of three species |
publisher |
Springer-Verlag |
publishDate |
2009 |
url |
http://hdl.handle.net/2440/57045 https://doi.org/10.1007/s00300-009-0645-y |
long_lat |
ENVELOPE(168.683,168.683,-77.517,-77.517) |
geographic |
Antarctic McIntosh New Zealand The Antarctic |
geographic_facet |
Antarctic McIntosh New Zealand The Antarctic |
genre |
Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Macquarie Island Polar Biology |
genre_facet |
Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Macquarie Island Polar Biology |
op_source |
http://dx.doi.org/10.1007/s00300-009-0645-y |
op_relation |
Polar Biology, 2009; 32(10):1473-1486 0722-4060 1432-2056 http://hdl.handle.net/2440/57045 doi:10.1007/s00300-009-0645-y |
op_doi |
https://doi.org/10.1007/s00300-009-0645-y |
container_title |
Polar Biology |
container_volume |
32 |
container_issue |
10 |
container_start_page |
1473 |
op_container_end_page |
1486 |
_version_ |
1785588110436859904 |