Predation by New Zealand sea lions (Phocarctos hookeri) as a threat to the viability of yellow-eyed penguins (Megadyptes antipodes) at Otago Peninsula, New Zealand

Biological Conservation

Volumn 135, Issue 2, 2007, Pages 235-246

  Lalas, Chris ^a   Ratz, Hiltrun ^a   McEwan, Kirsty ^b   McConkey, Shaun D ^c  

^a Penguin Place Conservation Reserve ^*  (New Zealand)

^b UNIVERSITY OF OTAGO   (New Zealand)

^c New Zealand Sea Lion Trust   (New Zealand)

Author keywords

New Zealand sea lion; Population; Predation; Prey; Yellow eyed penguin

Indexed keywords

BIRD; BREEDING POPULATION; COLONIZATION; CONSERVATION MANAGEMENT; ENDANGERED SPECIES; MALE BEHAVIOR; MARINE MAMMAL; NEST SITE; PREDATION RISK; PREHISTORIC; PREY AVAILABILITY; SPECIES CONSERVATION; SURVIVAL;

AUSTRALASIA; NEW ZEALAND; OTAGO; OTAGO PENINSULA; SOUTH ISLAND;

MEGADYPTES ANTIPODES; OTARIIDAE; PHOCARCTOS HOOKERI; SPHENISCIDAE;

EID: 33845585073     PISSN: 00063207     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.biocon.2006.10.024     Document Type: Article

References (41)

1. Beentjes M.P. Haul-out patterns, site fidelity and activity budgets of male Hooker's sea lions (Phocarctos hookeri) on the New Zealand mainland. Marine Mammal Science 5 (1989) 281-297
2. Bradshaw C.J.A., Lalas C., and McConkey S. New Zealand sea lion predation on New Zealand fur seals. New Zealand Journal of Marine and Freshwater Research 32 (1998) 101-104
3. Childerhouse S., Dix B., and Gales N. Diet of New Zealand sea lions (Phocarctos hookeri) at the Auckland Islands. Wildlife Research 28 (2003) 291-298
4. Crawford R.J.M., David J.H.M., Shannon L.J., Kemper J., Klages N.T.W., Roux J.-P., Underhill L.G., Ward V.L., Williams A.J., and Wolfaardt A.C. African penguins as predators and prey - coping (or not) with change. South African Journal of Marine Science 23 (2001) 435-447
5. Darby J.T., and Dawson S.M. Incidental bycatch of hoihos (Megadyptes antipodes) in gill-nets in New Zealand waters. Biological Conservation 93 (2000) 327-332
6. David J.H.M., Cury P., Crawford R.J.M., Randall R.M., Underhill L.G., and Meÿer M.A. Assessing conservation priorities in the Benguela ecosystem, South Africa: analyzing predation by seals on threatened seabirds. Biological Conservation 114 (2003) 289-292
7. Dickie G.S., and Dawson S.M. Age, growth, and reproduction in New Zealand fur seals. Marine Mammal Science 19 (2003) 173-185
8. Efford M.G., and Edge K.-A. Can artificial brood reduction assist the conservation of yellow-eyed penguins (Megadyptes antipodes). Animal Conservation 1 (1998) 263-271
9. Fischer J., and Lindenmayer D.B. An assessment of the published results of animal translocations. Biological Conservation 96 (2000) 1-11
10. Fraker M.A., and Mate B.R. Seals, sea lions and salmon in the Pacific Northwest. In: Reeves R.R. (Ed). Conservation and Management of Marine Mammal (1999), Melbourne University Press, Carlton South 156-178
11. Gales N.J., and Mattlin R.H. Summer diving behaviour of lactating New Zealand sea lions, Phocarctos hookeri. Canadian Journal of Zoology 75 (1997) 1695-1706
12. Gentry R.L. Behaviour and Ecology of the Northern Fur Seal (1998), Princeton University Press, Princeton
13. Gerrodette T. A power analysis for detecting trends. Ecology 68 (1987) 1364-1372
14. Graczyk T.K., Cockrem J.F., Cranfield M.R., Darby J.T., and Moore P. Avian malaria seroprevalence in wild New Zealand penguins. Parasite 2 (1995) 401-405
15. Hawke D.J. Observations of Hooker's sea lion, Phocarctos hookeri, at a hauling ground on Otago Peninsula, New Zealand. New Zealand Journal of Marine and Freshwater Research 20 (1986) 333-337
16. Innes S., Lavigne D.M., Earle W.M., and Kovacs K.M. Feeding rates of seals and whales. Journal of Animal Ecology 56 (1987) 115-130
17. Lalas C. Prey of Hooker's Sea Lions Phocarctos hookeri based at Otago Peninsula New Zealand. In: Hindell M., and Kemper C. (Eds). Marine Mammal Research in the Southern Hemisphere. Status, Ecology and Medicine vol. 1 (1997), Surrey Beatty and Sons, Chipping Norton 130-136
18. Lalas C., and Bradshaw C.J.A. Folklore and chimerical numbers: review of a millennium of interaction between fur seals and humans in the New Zealand region. New Zealand Journal of Marine and Freshwater Research 35 (2001) 477-497
19. Lalas C., and Bradshaw C.J.A. Expectations for population growth at new breeding locations for the vulnerable New Zealand sea lion (Phocarctos hookeri) using a simulation model. Biological Conservation 114 (2003) 67-78
20. Linnell J.D.C., Aanes R., Swenson J.E., Odden J., and Smith M.E. Translocation of carnivores as a method for managing problem animals: a review. Biodiversity and Conservation 6 (1997) 1245-1257
21. In: Marchant S., and Higgins P.J. (Eds). Handbook of Australian, New Zealand and Antarctic Birds vol. 1 (1990), Oxford University Press, Melbourne
22. Marks M.A., Brooke R.K., and Gildenhuys A.M. Cape Fur Seals Arctocephalus pusillus predation on Cape Cormorants Phalacrocorax capensis and other birds at Dyer Island, South Africa. Marine Ornithology 25 (1997) 9-12
23. McClung M.R., Seddon P.J., Massaro M., and Setiawan A.N. Nature-based tourism impacts on yellow-eyed penguins Megadyptes antipodes: does unregulated visitor access affect fledging weight and juvenile survival?. Biological Conservation 119 (2004) 279-285
24. McConkey, S.D., 1997. Individual identification, population dynamics and moult of the New Zealand sea lion at Otago. Unpublished M.Sc. thesis, University of Otago, Dunedin, New Zealand.
25. McConkey S.D., Heinrich S., Lalas C., McConnell H., and McNally N. Pattern of immigration of New Zealand sea lions Phocarctos hookeri to Otago, New Zealand: implications for management. Australian Mammalogy 24 (2002) 107-116
26. McConkey S.D., McConnell H., Lalas C., Heinrich S., Ludmerer A., McNally N., Parker E., Borofsky C., Schimanski K., and McIntosh G. A northward spread in the breeding distribution of the New Zealand sea lions Phocarctos hookeri. Australian Mammalogy 24 (2002) 97-106
27. McKay R., Lalas C., McKay D., and McConkey S. Nest-site selection by yellow-eyed penguins Megadyptes antipodes on grazed farmland. Marine Ornithology 27 (1999) 21-28
28. McKinlay, B., 2001. Hoiho (Megadyptes antipodes) Recovery Plan, 2000-2025, New Zealand Department of Conservation Threatened Species Recovery Plan 35.
29. Mendenhall W. Introduction to Probability and Statistics (1988), PWS-Kent and Nelson, Melbourne
30. Moore P.J. Population estimates of yellow-eyed penguin (Megadyptes antipodes) on Campbell and Auckland Islands 1987-90. Notornis 39 (1992) 1-15
31. Moore P.J. Foraging range of the yellow-eyed penguin Megadyptes antipodes. Marine Ornithology 27 (1999) 49-58
32. Moore P.J. Historical records of yellow-eyed penguin (Megadyptes antipodes) in southern New Zealand. Notornis 48 (2001) 145-156
33. Moore P.J., and Moffat R.D. Predation of yellow-eyed penguin by Hooker's sea lion. Notornis 39 (1992) 68-69
34. Ratz H., and Thompson C. Who is watching whom? Checks for impacts of tourists on yellow-eyed penguins, Megadyptes antipodes. Marine Ornithology 27 (1999) 205-210
35. Ratz H., Darby J.T., Edge K.-A., and Thompson C. Survival and breeding of yellow-eyed penguins (Megadyptes antipodes), at two locations on Otago Peninsula, South Island, New Zealand. New Zealand Journal of Zoology 31 (2004) 133-147
36. Ridgway S.H., and Robinson C.C. Homing by released captive California sea lions, Zalophus californianus, following release on distant islands. Canadian Journal of Zoology 63 (1985) 2162-2164
37. Robinson S., Wynen L., and Goldsworthy S. Predation by a Hooker's sea lion (Phocarctos hookeri) on a small population of fur seals (Arctocephalus spp.) at Macquarie Island. Marine Mammal Science 15 (1999) 888-893
38. Schweigman P., and Darby J.T. Predation of yellow-eyed penguins (Megadyptes antipodes) on mainland New Zealand by Hooker's sealion (Phocarctos hookeri). Notornis 44 (1997) 265-266
39. In: Stattersfield A.J., and Capper D.R. (Eds). Threatened Birds of the World (2000), Lynx Edicions and BirdLife International, Barcelona and Cambridge 41
40. Wilkinson I., Burgess J., and Cawthorn M. New Zealand sea lions and squid: managing fisheries impacts on a threatened marine mammal. In: Gales N., Hindell M., and Kirkwood R. (Eds). Marine Mammals, Fisheries, Tourism and Management Issues (2003), CSIRO Publishing, Collingwood 192-207
41. Zar J.H. Biostatistical Analysis. fourth ed. (1999), Prentice Hall, Englewood Cliffs