Variability in the diet of New Zealand sea lion (Phocarctos hookeri) at the Auckland Islands, New Zealand

Marine Mammal Science

Volumn 25, Issue 2, 2009, Pages 302-326

  Meynier, Laureline ^a,b   MacKenzie, Duncan D S ^b   Duignan, Pádraig J ^a,d   Chilvers, B Louise ^c   Morel, Patrick C H ^b  

^a MASSEY UNIVERSITY   (New Zealand)

^b MASSEY UNIVERSITY   (New Zealand)

^c DEPARTMENT OF CONSERVATION   (New Zealand)

^d An Roinn Talmhaiochta lascaigh agus Bia   (Ireland)

Author keywords

Diet; Dietary variation; Digested fraction; Feeding ecology; New Zealand sea lion; Phocarctos hookeri

Indexed keywords

CEPHALOPOD FISHERY; DIET; DIGESTION; FEEDING ECOLOGY; FORAGING BEHAVIOR; LACTATION; PINNIPED; STOMACH CONTENT;

AUCKLAND ISLANDS; AUSTRALASIA; NEW ZEALAND; PACIFIC ISLANDS; PACIFIC OCEAN;

CEPHALOPODA; COELORINCHUS; ENTEROCTOPUS; HEMEROCOETES; NOTOTODARUS SLOANII; OCTOPUS; OMMASTREPHIDAE; OTARIIDAE; PHOCARCTOS HOOKERI; PSEUDOPHYCIS BACHUS;

EID: 64949161438     PISSN: 08240469     EISSN: 17487692     Source Type: Journal    
DOI: 10.1111/j.1748-7692.2008.00252.x     Document Type: Article

References (54)

1. Baird, S. J. 2005a. Incidental capture of Phocarctos hookeri (New Zealand sea lions) in New Zealand commercial fisheries, 2001-02. New Zealand Fisheries Assessment Report 2005/8. 17 pp.
2. Baird, S. J. 2005b. Incidental capture of Phocarctos hookeri (New Zealand sea lions) in New Zealand commercial fisheries, 2002-03. New Zealand Fisheries Assessment Report 2005/9. 13 pp.
3. Baylis, A. M. M., B. Page, K. Peters, R. McIntosh, J. McKenzie and S. D. Goldsworthy. 2005. The ontogeny of diving behaviour in New Zealand fur seal pups (Arctocephalus forsteri). Canadian Journal of Zoology 83 : 1149 1161.
4. Bigg, M. A., and I. Fawcett. 1985. Two biases in diet determination of northern fur seals (Callorhinus ursinus). Pages 284 291 in J. R. Beddington, R. J. H. Beverton and D. M. Lavigne, eds. Marine mammals and fisheries. George Allen & Uniwin, London, UK.
5. Bowen, W. D. 2000. Reconstruction of pinniped diets: Accounting for complete digestion of otoliths and cephalopod beaks. Canadian Journal of Fisheries and Aquatic Sciences 57 : 898 905.
6. Campbell, R. A., B. L. Chilvers, S. J. Childerhouse and N. J. Gales. 2006. Conservation management issues and status of the New Zealand (Phocarctos hookeri) and Australian (Neophoca cinerea) sea lions. Pages 455 469 in A. W. Trites, S. Atkinson, D. P. DeMaster, L. W. Fritz, T. S. Gelatt, L. D. Rea and K. M. Wynne, eds. Sea lions of the world. Alaska Sea Grant College Program, University of Fairbanks, Fairbanks, AK.
7. Cawthorn, M. W., M. Crawley, R. Mattlin and G. Wilson. 1985. Research on pinnipeds in New Zealand. Wildlife Research Review No. 7, Wildlife Research Liaison Group, Wellington, New Zealand.
8. Childerhouse, S. J., and N. J. Gales. 1998. Historical and modern distribution and abundance of the New Zealand sea lion Phocarctos hookeri. New Zealand Journal of Zoology 25 : 1 16.
9. Childerhouse, S. J., B. Dix and N. J. Gales. 2001. Diet of New Zealand sea lions (Phocarctos hookeri) at the Auckland Islands. Wildlife Research 28 : 291 298.
10. Chilvers, B. L. 2008. Foraging site fidelity of lactating New Zealand sea lions, Phocarctos hookeri. Journal of Zoology, London 276 : 28 36.
11. Chilvers, B. L., I. S. Wilkinson, P. J. Duignan and N. J. Gemmell. 2005. Summer foraging areas for lactating New Zealand sea lions Phocarctos hookeri. Marine Ecology Progress Series 304 : 235 247.
12. Chilvers, B. L., I. S. Wilkinson, P. J. Duignan and N. J. Gemmell. 2006. Diving to extremes: are New Zealand sea lions (Phocarctos hookeri) pushing their limits in a marginal habitat? Journal of Zoology, London 269 : 233 240.
13. Chilvers, B. L., I. S. Wilkinson and S. Childerhouse. 2007. New Zealand sea lion, Phocarctos hookeri, pup production - 1995 to 2006. New Zealand Journal of Marine and Freshwater Research 41 : 205 213.
14. Clarke, M. R. 1986. A handbook for the identification of cephalopod beaks. Clarendon, Oxford, UK.
15. Costa, D. P. 1993. The relationship between reproductive and foraging energetics and the evolution of the Pinnipedia. Pages 293 314 in I. L. Boyd, ed. Marine mammals: Advances in behavioural and population biology. Volume 66. Symposium of the Zoological Society of London. Oxford University Press, Oxford, UK.
16. Costa, D. P., and N. J. Gales. 2000. Foraging energetics and diving behavior of lactating New Zealand sea lions, Phocarctos hookeri. Journal of Experimental Biology 203 : 3655 3665.
17. Dellinger, T., and F. Trillmich. 1988. Estimating diet composition from scat analysis in otariid seals (Otariidae): Is it reliable? Canadian Journal of Zoology 66 : 1865 1870.
18. Duignan, P. J., N. J. Gibbs and G. W. Jones. 2003. Autopsy of pinnipeds incidentally caught in fishing operations 1997/98, 1999/2000, and 2000/01. DOC Science Internal Series 118. Department of Conservation, Wellington, New Zealand.
19. Dytham, C. 1999. Choosing and using statistics: A biologist's guide. Blackwell, Oxford, UK.
20. Fea, N. I., R. G. Harcourt and C. Lalas. 1999. Seasonal variation in the diet of New Zealand fur seals (Arctocephalus forsteri) at Otago Peninsula, New Zealand. Wildlife Research 26 : 147 160.
21. Fowler, S. L., D. P. Costa and J. P. Y. Arnould. 2007. Ontogeny of movements and foraging ranges in the Australian sea lion. Marine Mammal Science 23 : 598 614.
22. Froese, R., and D. Pauly. 2007. FishBase. Available at http://www.fishbase.org.
23. Gales, N. J. 1995. New Zealand (Hooker's) sea lion recovery plan. Threatened Species Recovery Plan Series 17. Department of Conservation, Wellington, New Zealand. 26 pp.
24. Gales, N. J., and R. H. Mattlin. 1997. Summer diving behaviour of lactating New Zealand sea lions, Phocarctos hookeri. Canadian Journal of Zoology 75 : 1695 1706.
25. Gibson, D. J. M. 1995. The New Zealand squid fishery, 1979-1993. N.Z. Fisheries Technical Report No. 42, Ministry of Fisheries, Wellington, New Zealand. 43 pp.
26. Harvey, J. J. 1989. Assessment of errors associated with harbor seal (Phoca vitulina) faecal sampling. Journal of Zoology, London 219 : 101 111.
27. Hitchmough, R. A. 2002. New Zealand threat classification systems list 2002. Department of Conservation Threatened Species Occasional Publication 23, Department of Conservation, Wellington, New Zealand. 210 pp.
28. Holborow, J. 1999. The diet of New Zealand fur seals in Southern New Zealand. M.Sc. thesis, University of Otago, Dunedin, New Zealand. 88 pp.
29. Jackson, G. D. 1995. The use of beaks as tools for biomass estimation in the deepwater squid Moroteuthis ingens (Cephalopoda: Onychoteuthidae) in New Zealand waters. Polar Biology 15 : 9 14.
30. Jackson, G. D., A. G. P. Shaw and C. Lalas. 2000. Distribution and biomass of two squid species off southern New Zealand: Nototodarus sloanii and Moroteuthis ingens. Polar Biology 23 : 699 705.
31. Jobling, M. 1987. Marine mammal faecal samples as indicators of prey importance - a source of error in bioenergetics studies. Sarsia 72 : 255 260.
32. Jobling, M., and A. Breiby. 1986. The use and abuse of fish otoliths in studies of feeding habits of marine piscivores. Sarsia 71 : 265 274.
33. Lalas, C. 1997. Prey of Hooker's sea lions Phocarctos hookeri based at Otago Pensinsula New Zealand. Pages 130 136 in M. A. Hindell and C. Kemper, eds. Marine mammal research in the Southern Hemisphere. Volume 1. Status, ecology and medicine. Surrey Beatty & Sons, Sydney, Australia.
34. Leopold, M. F., C. J. G. Van Damme, C. J. M. Philippart and C. J. N. Winter. 2002. Otoliths of North Sea fish - fish identification key by means of otoliths and other hard parts. CD-ROM. Expert Center for Taxonomic Identification, Amsterdam, Netherlands.
35. McMahon, C. R., D. Holley and S. Robinson. 1999. The diet of itinerant male Hooker's sea lions, Phocarctos hookeri, at sub-Antarctic Macquarie Island. Wildlife Research 26 : 839 846.
36. Ministry of Fisheries. 2007. Fishery Assessment Plenary Report, May 2007: Stock assessments and yield estimates. Ministry of Fisheries, Wellington, New Zealand. 1,015 pp. Available for each species at http://www.fish.govt.nz/en-nz/ SOF/default.htm.
37. Murie, D. J., and D. M. Lavigne. 1985. Digestion and retention of Atlantic herring otoliths in the stomachs of grey seals. Pages 292 299 in J. R. Beddington, R. J. H. Beverton and D. M. Lavigne, eds. Marine mammals and fisheries. George Allen and Unwin, London, UK.
38. Nesis, K. N. 1987. Cephalopods of the world, squids, cuttlefishes, octopuses and allies. TFH Publications, Neptune City, NJ.
39. O'Driscoll, R. L., and N. W. Bagley. 2001. Review of summer and autumn trawl survey time series from the southland and sub-antarctic areas 1991-98. NIWA Technical Report 102, ISSN 1174-2631. 115 pp.
40. Page, B., J. McKenzie and S. D. Goldsworthy. 2005. Dietary resource partitioning among sympatric New Zealand and Australian fur seals. Marine Ecology Progress Series 293 : 283 302.
41. Paul, L. 2000. New Zealand Fishes: identification, natural history and fisheries. Revised edition. Reed Books, Auckland, New Zealand.
42. Paulin, C. D., A. Stewart, C. Roberts and P. McMillan. 1989. New Zealand Fish: A complete guide. National Museum of New Zealand, Wellington, New Zealand.
43. Pierce, G. J., and P. R. Boyle. 1991. A review of methods for diet analysis in piscivorous marine mammals. Oceanography and Marine Biology: An Annual Review 29 : 409 486.
44. Pierce, G. J., M. B. Santos, J. A. Learmonth, E. Mente and G. Stowasser. 2004. Methods for dietary studies on marine mammals. Pages 29 36 in Investigating the roles of cetaceans in marine ecosystems. CIESM, Workshop Monograph 25, Commission Internationale pour l'Exploration Scientifique de la mer Méditérranée, Monaco.
45. Pusineri, C., V. Magnin, L. Meynier, J. Spitz, S. Hassani and V. Ridoux. 2007. Food and feeding ecology of the common dolphin (Delphinus delphis) in the oceanic Northeast Atlantic and comparison with its diet in neritic areas. Marine Mammal Science 23 : 30 47.
46. Robertson, B. C., B. L. Chilvers, P. J. Duignan, I. S. Wilkinson and N. J. Gemmell. 2006. Dispersal of breeding, adult male Phocarctos hookeri: Implications for disease transmission, population management and species recovery. Biological Conservation 127 : 227 236.
47. Santos, M. B., G. J. Pierce, A. López, J. A. Martínez, M. T. Fernández, E. Ieno, E. Mente, C. Porteiro, P. Carrera and M. Meixide. 2004. Variability in the diet of common dolphins (Delphinus delphis) in Galician waters 1991-2003 and relationship with prey abundance. ICES CM 2004/Q:09.
48. Smale, M. J., G. Watson and T. Hecht. 1995. Otolith Atlas of southern African marine fishes. Ichthyological Monographs Number 1. J. L. B. Smith Institute of Ichthyology, Grahamstown, South Africa.
49. Spence-Bailey, L. M., D. Verrier and J. P. Y. Arnould. 2007. The physiological and behavioral development of diving in Australian fur seal (Arctocephalus pusillus doriferus) pups. Journal of Comparative Physiology B 177 : 483 494.
50. Staniland, I. J. 2002. Investigating the biases in the use of hard prey remains to identify diet composition using Antarctic fur seals (Arctocephalus gazella) in captive feeding trials. Marine Mammal Science 18 : 223 243.
51. Tollit, D. J., M. J. Steward, P. M. Thompson, G. J. Pierce, M. B. Santos and S. Hughes. 1997. Species and size differences in the digestion of otoliths and beaks: Implications for estimates of pinniped diet composition. Canadian Journal of Fisheries and Aquatic Sciences 54 : 105 119.
52. Tollit, D. J., M. Wong, A. J. Winship, D. A. S. Rosen and A. W. Trites. 2003. Quantifying errors associated with using prey skeletal structures from fecal samples to determine the diet of Steller's sea lion (Eumatopias jubatus). Marine Mammal Science 19 : 724 744.
53. Wilkinson, I. S., J. Burges and M. Cawthorn. 2003. New Zealand sea lions and squid: managing fisheries impacts on a threatened marine mammal. Pages 192 207 in N. J. Gales, M. A. Hindell and R. Kirkwood, eds. Marine mammals: Fisheries, tourism and management issues. CSIRO Publishing, Collingwood, Australia.
54. Wilkinson, I. S., P. J. Duignan, A. Castinel, A. Grinberg, B. L. Chilvers and B. C. Robertson. 2006. Klebsiella pneumoniae epidemics: Possible impacts on New Zealand sea lion recruitment. Pages 385 403 in A. W. Trites, S. Atkinson, D. P. DeMaster, L. W. Fritz, T. S. Gelatt, L. D. Rea and K. M. Wynne, eds. Sea lions of the world. Alaska Sea Grant College Program, University of Fairbanks, Fairbanks, AK.