Ukrainian Antarctic Journal

No 8 (2009): Ukrainian Antarctic Journal
Articles

The feeding peculiarities of the Antarctic seals in the region of the Argentina Islands Archipelago

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  • I. Dykyy
I. Dykyy
Ivan Franko National University of Lviv, Lviv, National Antarctic Scientific Center, Kyiv
DOI: https://doi.org/10.33275/1727-7485.8.2009.458
Published December 16, 2009
Keywords
  • feeding,
  • seals,
  • Argentina Islands,
  • Antarctic ecosystem
How to Cite
Dykyy, I. (2009). The feeding peculiarities of the Antarctic seals in the region of the Argentina Islands Archipelago. Ukrainian Antarctic Journal, (8), 311-319. https://doi.org/10.33275/1727-7485.8.2009.458

Abstract

The detailed analysis of a food of the Antarctic species of seals around Argentine islands archipelago, that was spent through out 11 Ukrainian Antarctic expedition (2006-2007), has shown that krill (Euphausia superba) is the main type of food for the major species of seals in region. Krill makes 97,2 % to a diet of fur seals (Arctocephalus gazella) and 90 % to a diet crabeater seal (Lobodon carcinophagus) during the summer period. It is established rather big dimensional and weight rates to young growth in comparison with literary data àccording to Weddell seal (L. weddelli) newborns monitoring. It testifies to enough qualitative and sufficient forage reserve for pregnant Weddell seal females in archipelago water area in which diet krill prevails also (about 70 %). Considering that from 5 seals species counted within archipelago, the most numerous is the crabeater seal and a southern fur seal - these species can be used as «species indicators» of krill distribution and quantity in the given region. It is established, that the leopard seal's fodder diet is similar, to a diet of a specie around eastern Antarctic, despite an essential latitude difference of specie habitat arrangements. The trophical researches of Weddell seal have allowed to define a new commercial specie of large squid Psychroteuthis glacialisfor the first time in given region. These results have great value not only for a definition of an actual condition of Antarctic ecosystem and biovariety preservations in planetary scale. But also can be used for working out of the management project for future rational use of krill sea stocks and squids in the given region of Antarctic, at the state level.

 

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References

  1. LAGO
  2. Bonner, W., & Hunter, S. (1982). Predatory interactions between Antarctic fur seals, macaroni penguins and giant petrels. British Antarctic Survey Bulletin, 56, 75–79.
  3. Burns, J.M., Costa, D.P., Fedak, M.A., Hindell, M.A., Bradshaw, C.J.A., Gales, N.J., McDonald, B., Trumble, S.J., & Crocker, D.E. (2004). Winter habitat use and foraging behavior of crabeater seals along the Western Antarctic Peninsula. Deep-Sea Research II, 51, 2279–2303.
  4. Burns, J.M., Trumble, S.J., Castellini, M.A., & Testa, J.W. (1998). The diet of Weddell seals in McMurdo Sound, Antarctica as determined from scat collections and stable isotope analysis. Polar Biology, 19, 272–282.
  5. Casaux, R., Baroni, A., & Ramo, A. (2005). The diet of the Weddell Seal Leptonychotes weddellii at the Danco Coast, Antarctic Peninsula. Polar Biology, 25, 1–6.
  6. Casaux, R., Baroni, A., Arrighetti, F., Ramo, A., & Carlini, A. (2003). Geographical variation in the diet of the Antarctic fur seal Arctocephalus gazella. Polar Biology, 26, 753–758.
  7. Casaux, R., Baroni, A., & Carlini, A. (1998). The diet of the Antarctic fur seal Arctocephalus gazella at Harmony Point, Nelson Island, South Shetland Islands. Polar Biology, 20, 424–428.
  8. Casaux, R., Baroni, A., & Carlini, A. (1997). The diet of the Weddell seal Leptonychotes weddelli at Harmony Point, South Shetland Islands. Polar Biology, 18, 371–375.
  9. Casaux, R., Bellizia, L., & Baroni, A. (2004). The diet of the Antarctic fur seal Arctocephalus gazelle at Harmony Point, South Shetland Islands: evidence of opportunistic foraging on penguins? Polar Biology, 27, 59–65.
  10. Clarke, M. (1980). Cephalopoda in the diet of sperm whales of the Southern Hemisphere and their bearing on sperm whale biology. Discov Rep, 37, 1–324.
  11. Clarke, M., & MacLeod, N. (1982). Cephalopod remains in the stomachs of eight weddell seals. British Antarctic Survey Bulletin, 57, 33–40.
  12. Croll, D.A., & Tershy, B.R. (1998). Penguins, fur seals, and fishing: prey requirements and potential competition in the South Shetland Islands, Antarctica. Polar Biology, 19, 365–374.
  13. da Silva, J., & Neilson, J. (1985). Limitations of using otoliths recovered in scats to estimate prey consumption in seals. Can J Fish Aquat Sci, 42, 1439–1442.
  14. Daneri, G.A., Carlini, A.R., Hernandez, C.M., & Harrington, A. (2005). The diet of Antarctic fur seals, Arctocephalus gazella, at King George Island, during the summer–autumn period. Polar Biology, 28, 329–333.
  15. Daneri, G., & Coria, N. (1992). The diet of Antarctic fur seals, Arctocephalus gazella, during summer-autumn period at Mossman Peninsula, Laurie Island (South Orkneys). Polar Biology, 11, 565–566.
  16. Daneri, G.A., Piatkowski, U., Coria, N.R., & Carlini A.R. (1999). Predation on cephalopods by Antarctic fur seals, Arctocephalus gazella, at two localities of the Scotia Arc, Antarctica. Polar Biology, 21, 59–63.
  17. Fisher, W., & Hureau, J.C. (1985a). FAO species identification sheets for fishery purposes. Southern Ocean (Fishing Areas 48, 58 and 88), FAO, 1.
  18. Fisher, W., & Hureau, J.C. (1985b). FAO species identification sheets for fishery purposes. Southern Ocean (Fishing Areas 48, 58 and 88), FAO, 2, 233-470.
  19. Gon, O., & Heemstra, P.C. (1990). Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown.
  20. Hall-Aspland, S.A., & Rogers, T. L. (2004). Summer diet of leopard seals (Hydrurga leptonyx) in Prydz Bay, Eastern Antarctica. Polar Biology, 27, 729–734.
  21. Hecht, T. (1987). A guide to the otoliths of Southern Ocean fishes. S Afr J Antarct Res, 17(1), 87.
  22. Hiruki, L.M., Schwartz, M.K., & Boveng, P.L. (1999). Hunting and social behaviour of leopard seals (Hydrurga leptonyx) at Seal Island, South Shetland Islands, Antarctica. J. Zool., London, 249, 97–109.
  23. Hofmeyr, G., & Bester, M. (1993). Predation on king penguins by Antarctic fur seals. S Afr J Antarct Res, 23, 71–74.
  24. Lake, S., Burton, H., & Hoff, J. (2003). Regional, temporal and fine-scale spatial variation in Weddell seal diet at four coastal locations in east Antarctica. Mar Ecol Prog Ser, 254, 293–305.
  25. Lascara, C.M., Hofmann, E.E., Ross, R.R., & Quetin, L.B. (1999). Seasonal variability in the distribution of Antarctic krill, Euphausia superba, West of the Antarctic Peninsula. Deep- Sea Research I, 46, 951–984.
  26. Laws, R. (1985). The ecology of the Southern Ocean. Am Sci, 73, 26–40.
  27. Lea, M.-A., Hindell, M., & Goldsworthy, C.G.S. (2002). Variability in the diving activity of Antarctic fur seals, Arctocephalus gazella, at Iles Kerguelen. Polar Biology, 25, 269–279.
  28. Lipinski, M, & Woyciechowski, M. (1981). Cephalopods in the food of Weddell seals from the Admiralty Bay (King George Island, South Shetland Islands). Polish Polar Research, 2(3–4), 163–167.
  29. McMahon, C.R., Hindell, M.A., Dorr, T., & Massom, R.A. (2002). Winter distribution and abundance of crabeater seals off George Vland, East Antarctica. Antarctic Science, 14, 128–133.
  30. Murie, D. (1987). Experimental approaches to stomach content analyses of piscivorous marine mammals. In: A. Huntley, D. Costa, G. Worthy, M. Castellini (Eds.), Marine mammal energetics. Society Mar Mammology, Lawrence. pp. 147–163.
  31. Nordoy, E.S., Folkow, L.P., & Blix, A.S. (1995). Distribution and diving behaviour of crabeater seals (Lobodon carcinophagus) off Queen Maud Land. Polar Biology, 15, 261–268.
  32. Okutani, T., & Clarke, M. (1985). Identification key and species description for Antarctic squids. BIOMASS Handbook, 21, 57.
  33. Reid, K. (1996). A guide to the use of otoliths in the study of predators at South Georgia. British Antarctic Survey, Cambridge, p. 40.
  34. Siegel, V. (1988). A concept of seasonal variation of krill (Euphausia superba) distribution and abundance west of the Antarctic Penninsula. In: D. Sahrhage (Ed.), Antarctic Ocean and Resources Variability. Springer, Berlin, pp. 219–230.
  35. Testa, J.W., Oehlert, G., Ainley, D.G., Bengtson, J.L., Siniff, D.B., Laws, R.M., & Rounsevell, D. (1991). Temporal variability in Antarctic marine ecosystems: periodic fluctuations in the phocid seals. Canadian Journal of Fisheries and Aquatic Sciences, 48, 631–639.
  36. Williams, R., & McEldowney, A. (1990). A guide to the fish otoliths from waters off the Australian Antarctic Territory, Heard and Macquarie Islands. ANARE Res Notes, 75, 1–173.
  37. Wilson, R.P., Puetz, K., Bost, C.A., Culik, B.M., Bannasch, R., Reins, T., Adelung, D. (1993). Diel dive depth in penguins in relation to diel vertical migration of prey: whose dinner by candlelight? Marine Ecology Progress Series, 94, 101–104.