Summer survey of fur seals at Prince Edward Island, southern Indian Ocean

dc.contributor.authorBester, Marthan Nieuwoudt
dc.contributor.authorRyan, Peter G.
dc.contributor.authorVisagie, J.
dc.contributor.emailmnbester@zoology.up.ac.zaen
dc.date.accessioned2010-07-19T06:31:49Z
dc.date.available2010-07-19T06:31:49Z
dc.date.issued2009
dc.description.abstractThe onshore distributions and the abundances of Antarctic fur seals Arctocephalus gazella and Subantarctic fur seals A. tropicalis were determined at Prince Edward Island during 16–20 December 2008. This repeats a survey conducted in December 2001 and extends the area surveyed to include the entire south-west coast of Prince Edward Island. Of the two colonies of Antarctic fur seals, the colony among Subantarctic fur seals north of Boggel Beach remained small, with increased numbers of Subantarctic fur seals and putative hybrids. The other Antarctic fur seal breeding colony at Penguin Beach remained free of Subantarctic fur seals and had expanded at a mean intrinsic rate of natural increase of 11.4% per year from 2001. With an estimated 810 pups, the Antarctic fur seal is still in the rapid recolonisation phase of population growth. The distribution of the more widespread and abundant Subantarctic fur seals also had increased, with several new breeding colonies along the east coast and one at Kent Crater on the west coast. The annual pup production was conservatively estimated at 14 130 pups. The mean intrinsic rate of natural increase has declined to –0.3% per year over the last seven years, compared to the 9.3% per year between 1987/1988 and 2001/2002, and the population is in the mature phase of population growth.en
dc.identifier.citationBester, MN, Ryan, PG & Visagie, J 2009, 'Summer survey of fur seals at Prince Edward Island, southern Indian Ocean', African Journal of Marine Science, vol. 31, no. 3, pp. 1-5. [http://www.nisc.co.za/journals?id=10]en
dc.identifier.issn1814-232X
dc.identifier.urihttp://hdl.handle.net/2263/14467
dc.language.isoenen
dc.publisherNISCen
dc.rightsNISCen
dc.subjectArctocephalusen
dc.subjectDistributionen
dc.subjectFur sealsen
dc.subjectPopulation increaseen
dc.subjectPrince Edward Islanden
dc.subjectSubantarcticen
dc.subject.lcshSouthern fur seals -- Prince Edward Island.en
dc.subject.lcshSeals (Animals)en
dc.titleSummer survey of fur seals at Prince Edward Island, southern Indian Oceanen
dc.typePostprint Articleen

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Bester_Summer(2009).pdf
Size:
139.88 KB
Format:
Adobe Portable Document Format
Description:
Postprint Article

License bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
2.43 KB
Format:
Item-specific license agreed upon to submission
Description: