Prey and seasonal abundance of killer whales at sub-Antartic Marion Island

Reisinger, Ryan Rudolf; De Bruyn, P.J. Nico; Tosh, Cheryl A.; Oosthuizen, Wessel Christiaan; Mufanadzo, N. Thomas; Bester, Marthan Nieuwoudt

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dc.contributor.author	Reisinger, Ryan Rudolf
dc.contributor.author	De Bruyn, P.J. Nico
dc.contributor.author	Tosh, Cheryl A.
dc.contributor.author	Oosthuizen, Wessel Christiaan
dc.contributor.author	Mufanadzo, N. Thomas
dc.contributor.author	Bester, Marthan Nieuwoudt
dc.date.accessioned	2012-01-31T06:21:56Z
dc.date.available	2012-01-31T06:21:56Z
dc.date.issued	2011
dc.description.abstract	The diet of killer whales Orcinus orca was investigated from 48 predation events observed during 823 sightings at sub-Antarctic Marion Island between 2006 and 2009. From these events, there were 10 cases where prey could be identified. Killer whales fed on fur seals Arctocephalus tropicalis, elephant seals Mirounga leonina and penguins. Constant effort (dedicated) observations (259 hours, 2008–2009) showed that the peak in killer whale abundance was between September and December with a secondary peak between April and May, which coincided with peaks in the abundance of seals and penguins.	en
dc.description.librarian	nf2012	en
dc.description.sponsorship	The Department of Science and Technology (administered through the National Research Foundation) for funding the marine mammal monitoring programme at Marion Island.	en_US
dc.description.uri	http://www.tandfonline.com/loi/tams20	en_US
dc.identifier.citation	Reisinger, RR, De Bruyn, PJN, Tosh, CA, Oosthuizen, WC, Mufanadzo, NT & Bester, MN 2011, 'Prey and seasonal abundance of killer whales at sub-Antartic Marion Island', African journal of Marine Science, vol. 33, no. 1, pp.99-105.	en
dc.identifier.issn	1814-232X (print)
dc.identifier.issn	1814-2338 (online)
dc.identifier.other	10.2989/1814232X.2011.572356
dc.identifier.uri	http://hdl.handle.net/2263/17938
dc.language.iso	en	en_US
dc.publisher	Taylor & Francis	en_US
dc.rights	© Taylor & Francis. This is an electronic version of an article published in African Journal of Marine Science, vol. 33, no. 1, pp. 99-105, 2011. African Journal of Marine Science is available online at: http://www.tandfonline.com/loi/tams20. This article is embargoed by the publisher until June 2012.	en
dc.subject	Orcinus orca	en
dc.subject	Seasonal occurrence	en
dc.subject.lcsh	Killer whale -- Food -- Prince Edward Islands -- Marion Island	en
dc.subject.lcsh	Predation (Biology) -- Prince Edward Islands -- Marion Island	en
dc.subject.lcsh	Seals (Animals) -- Predators of -- Prince Edward Islands -- Marion Island	en
dc.title	Prey and seasonal abundance of killer whales at sub-Antartic Marion Island	en
dc.type	Postprint Article	en