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Fine-scale habitat selection by white-beaked and common dolphins in the Minch (Scotland, UK): evidence for interspecific competition or coexistence?

Published online by Cambridge University Press:  21 July 2009

Caroline R. Weir ,
Colin D. Macleod  and
Susannah V. Calderan
Caroline R. Weir*
Affiliation:
Ketos Ecology, 4 Compton Road, West Charleton, Kingsbridge, Devon TQ7 2BP, UK School of Biological Sciences (Zoology), University of Aberdeen, Tillydrone Avenue, Aberdeen, AB24 2TZ, UK
Colin D. Macleod
Affiliation:
School of Biological Sciences (Zoology), University of Aberdeen, Tillydrone Avenue, Aberdeen, AB24 2TZ, UK
Susannah V. Calderan
Affiliation:
Hebridean Whale and Dolphin Trust, 28 Main Street, Tobermory, Isle of Mull, Argyll, PA75 6NU, UK
*
Correspondence should be addressed to: C.R. Weir, Ketos Ecology, 4 Compton Road, West Charleton, Kingsbridge, Devon TQ7 2BP, UK email: Caroline.Weir@ketosecology.co.uk
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Abstract

A decline in white-beaked dolphins Lagenorhynchus albirostris had been reported in the Minch (Scotland, UK) since the 1990s, coinciding with an increasing occurrence of short-beaked common dolphins Delphinus delphis. This has led to suggestions that rising seawater temperatures are causing D. delphis to out-compete and exclude L. albirostris in this region. A total of 793 km (66.3 hours) of survey data were collected in the Minch during August 2007, to examine fine-scale habitat selection by L. albirostris and D. delphis and investigate whether their ecological overlap is sufficient to result in interspecific competition and/or habitat partitioning. Ten sightings of L. albirostris (70 animals) were recorded in a relatively small spatial area in the northern Minch. In contrast, the eleven sightings of D. delphis (1486 animals) were more widely distributed. The relative abundance per 1/4 ICES rectangle ranged from 0.41 to 0.53 animals/km for L. albirostris and 0.13 to 6.68 animals/km for D. delphis. The mean group size and group body mass were higher for D. delphis than for L. albirostris indicating D. delphis as the dominant delphinid in the Minch during August. Lagenorhynchus albirostris occurred in waters significantly deeper and further from shore than D. delphis, suggesting interspecific differences in preferred habitat. Most dolphin schools were recorded as foraging/feeding. Behaviour and seabird associations indicated that the two species differed in diet and/or foraging strategy, with L. albirostris foraging sub-surface and D. delphis exhibiting surface-feeding with associated gannets Morus bassanus. This is consistent with published information on the stomach contents of Scottish animals. The results suggest that there are subtle differences in habitat selection and diet between these two species, which may enable L. albirostris and D. delphis to coexist in the Minch. Whether these differences result from niche partitioning arising from previous/ongoing interspecific competition or are the result of genuine differences in the habitat preferences of each species, remains unclear.

Keywords

habitat selectiondietary divergencewhite-beaked dolphinLagenorhynchus albirostrisshort-beaked common dolphinDelphinus delphisScotland
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 89 , Special Issue 5: Cetaceans , August 2009 , pp. 951 - 960
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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References

REFERENCES

Albert, O.T. (1994) Ecology of haddock (Melanogrammus aeglefinus L.) in the Norwegian deep. ICES Journal of Marine Science 51, 31–44.CrossRefGoogle Scholar
Bearzi, G., Politi, E. and Notarbartolo di Sciara, G. (1999) Diurnal behaviour of free-ranging bottlenose dolphins in the Kvarnerić (Northern Adriatic Sea). Marine Mammal Science 15, 1065–1097.CrossRefGoogle Scholar
Bearzi, M. (2005a) Dolphin sympatric ecology. Marine Biology Research 1, 165–175.CrossRefGoogle Scholar
Bearzi, M. (2005b) Habitat partitioning by three species of dolphins in Santa Monica Bay, California. Bulletin of the Southern California Academy of Sciences 104, 113–124.CrossRefGoogle Scholar
Brophy, J.T. (2003) The diet of the common dolphin (Delphinus delphis L.) in Irish waters. MSc thesis. University of Cork, UK.Google Scholar
Brown, D.H. and Norris, K.S. (1956) Observations of captive and wild cetaceans. Journal of Mammalogy 37, 311–326.CrossRefGoogle Scholar
Brunel, T. and Boucher, J. (2007) Long-term trends in fish recruitment in the north-east Atlantic related to climate change. Fisheries Oceanography 16, 336–349.CrossRefGoogle Scholar
Cañadas, A. and Hammond, P.S. (2008) Abundance and habitat preferences of the short-beaked common dolphin Delphinus delphis in the southwestern Mediterranean: implications for conservation. Endangered Species Research 4, 309–331.CrossRefGoogle Scholar
Canning, S.J., Santos, M.B., Reid, R.J., Evans, P.G.H., Sabin, R.C., Bailey, N. and Pierce, G.J. (2008) Seasonal distribution of white-beaked dolphins (Lagenorhynchus albirostris) in UK waters with new information on diet and habitat use. Journal of the Marine Biological Association of the United Kingdom 88, 1159–1166.CrossRefGoogle Scholar
Cook, R.M. and Heath, M.R. (2005) The implications of warming climate for the management of North Sea demersal fisheries. ICES Journal of Marine Science 62, 1322–1326.CrossRefGoogle Scholar
Embling, C.B., Fernandes, P.G., Hammond, P.S., Armstrong, F. and Gordon, J. (2005) Investigations into the relationship between pelagic fish and dolphin distributions off the west coast of Scotland. ICES CM2005/R:08. 15pp.Google Scholar
Ersts, P.J. and Rosenbaum, H.C. (2003) Habitat preference reflects social organization of humpback whales (Megaptera novaeangliae) on a wintering ground. Journal of Zoology, London 260, 337–345.CrossRefGoogle Scholar
Evans, P.G.H. (1980) Associations between seabirds and cetaceans: a review. Mammal Review 12, 187–206.CrossRefGoogle Scholar
Evans, P.G.H. (1987) The natural history of whales and dolphins. London: Academic Press, 343 pp.Google Scholar
Evans, W.E. (1994) Common dolphin, white-bellied porpoise— Delphinus delphis Linnaeus, 1758. In Ridgway, S.H. and Harrison, R. (eds) Handbook of marine mammals volume 5: the first book of dolphins. New York: Academic Press, pp. 191–225.Google Scholar
Fertl, D. and Würsig, B. (1995) Coordinated feeding by Atlantic spotted dolphins (Stenella frontalis) in the Gulf of Mexico. Aquatic Mammals 21, 3–5.Google Scholar
Friedlaender, A.S., Lawson, G.L. and Halpin, P.N. (2006) Evidence of resource partitioning and niche separation between humpback and minke whales in Antarctica: implications for interspecific competition. International Whaling Commission, Scientific Committee Document SC/58/E32, Cambridge, UK.Google Scholar
Gallo Reynoso, J.P. (1991) Group behavior of common dolphins (Delphinus delphis) during prey capture. Anales del Instituto de Biologia Universidad Nacional Autonoma de Mexico Serie Zoologia 62, 253–262.Google Scholar
Garaffo, G.V., Dans, S.L., Pedraza, S.N., Crespol, E.A. and Degrail, M. (2007) Habitat use by dusky dolphin in Patagonia: how predictable is their location? Marine Biology 152, 165–177.CrossRefGoogle Scholar
Gillibrand, P.A., Sammes, P.J., Slesser, G. and Adams, R.D. (2003) Seasonal water column characteristics in the Little and North Minches and the Sea of Hebrides. I. Physical and chemical parameters. Fisheries Research Services Internal Report No. 08/03, 40 pp.Google Scholar
Griffin, R.B. and Griffin, N.J. (2003) Distribution, habitat partitioning, and abundance of Atlantic spotted dolphins, bottlenose dolphins, and loggerhead sea turtles on the eastern Gulf of Mexico continental shelf. Gulf of Mexico Science 2003(1), 23–34.Google Scholar
Gowans, S. and Whitehead, H. (1995) Distribution and habitat partitioning by small odontocetes in the Gully, a submarine canyon on the Scotian Shelf. Canadian Journal of Zoology 73, 1599–1608.CrossRefGoogle Scholar
Hamer, K.C., Phillips, R.A., Wanless, S., Harris, M.P. and Wood, A.G. (2000) Foraging ranges, diets and feeding locations of gannets Morus bassanus in the North Sea: evidence from satellite telemetry. Marine Ecology Progress Series 200, 257–264.CrossRefGoogle Scholar
Lahaye, V., Bustamante, P., Spitz, J., Dabin, W., Das, K., Pierce, G.J. and Caurant, F. (2005) Long-term dietary segregation of common dolphins Delphinus delphis in the Bay of Biscay, determined using cadmium as an ecological tracer. Marine Ecology Progress Series 305, 275–285.CrossRefGoogle Scholar
Lammers, M.O. (2004) Occurrence and behaviour of Hawaiian spinner dolphins (Stenella longirostris) along Oahu's leeward and south shores. Aquatic Mammals 30, 237–250.CrossRefGoogle Scholar
Macleod, K. (2001) The spatial and temporal distribution of cetaceans off the west coast of Scotland in relation to environmental factors. PhD thesis. University of Greenwich, London, UK.Google Scholar
MacLeod, C.D., Bannon, S.M., Pierce, G., Schweder, C., Learmonth, J.A., Reid, R.J. and Herman, J.S. (2005) Climate change and the cetacean community of north-west Scotland. Biological Conservation 124, 477–483.CrossRefGoogle Scholar
MacLeod, C.D., Weir, C.R., Pierpoint, C. and Harland, E. (2007) The habitat preferences of marine mammals west of Scotland (UK). Journal of the Marine Biological Association of the United Kingdom 87, 157–164.CrossRefGoogle Scholar
MacLeod, C.D., Weir, C.R., Santos, M.B. and Dunn, T.E. (2008) Temperature-based summer habitat partitioning between white-beaked and common dolphins around the United Kingdom and Republic of Ireland. Journal of the Marine Biological Association of the United Kingdom 88, 1193–1198.CrossRefGoogle Scholar
Neumann, D.R. (2001) Seasonal movements of short-beaked common dolphins (Delphinus delphis) in the north-western Bay of Plenty, New Zealand: influence of sea surface temperature and El Niño/La Niña. New Zealand Journal of Marine and Freshwater Research 35, 371–374.CrossRefGoogle Scholar
Neumann, D.R. and Orams, M.B. (2003) Feeding behaviours of short-beaked common dolphins, Delphinus delphis, in New Zealand. Aquatic Mammals 29, 137–149.CrossRefGoogle Scholar
Northridge, S.P., Tasker, M.L., Webb, A. and Williams, J.M. (1995) Distribution and relative abundance of harbour porpoises (Phocoena phocoena L.), white-beaked dolphins (Lagenorhynchus albirostris Gray), and minke whales (Balaenoptera acutorostrata Lacépède) around the British Isles. ICES Journal of Marine Science 52, 55–66.CrossRefGoogle Scholar
O'Brien, C.M., Fix, C.J., Planque, B. and Casey, J. (2000) Climate variability and North Sea cod. Nature 404, 142.CrossRefGoogle ScholarPubMed
Perrin, W.F., Warner, R.R., Fiscus, C.H. and Holts, D.B. (1973) Stomach contents of porpoise, Stenella spp., and yellowfin tuna, Thunnus albacares, in mixed-species aggregations. Fishery Bulletin 71, 1077–1092.Google Scholar
Pusineri, C., Magnin, V., Meynier, L., Spitz, J., Hassani, S. and Ridoux, V. (2007) Food and feeding ecology of the common dolphin (Delphinus delphis) in the oceanic northeast Atlantic and comparison with its diet in neritic waters. Marine Mammal Science 23, 30–47.CrossRefGoogle Scholar
Reeves, R.R., Smeenk, C., Kinze, C.C., Brownell, R.L. Jr. and Lien, J. (1999) White-beaked dolphin Lagenorhynchus albirostris Gray, 1846. In Ridgway, S.H. and Harrison, R. (eds) Handbook of marine mammals volume 6: the second book of dolphins and the porpoises. San Diego, CA and London, UK: Academic Press, pp. 1 –30.Google Scholar
Reid, J.C., Evans, P.G.H. and Northridge, S.P. (2003) Atlas of cetacean distribution in Northwest European waters. Peterborough, UK: Joint Nature Conservation Committee, 76 pp.Google Scholar
Rose, G.A. (2005) On distributional responses of North Atlantic fish to climate change. ICES Journal of Marine Science 62, 1360–1374.CrossRefGoogle Scholar
Santos, M.B., Pierce, G.J., Ross, H.M., Reid, R.J. and Wilson, B. (1994) Diets of small cetaceans from the Scottish coast. International Council for the Exploration of the Sea, CM1994/N11.Google Scholar
Saulitis, E., Matkin, C., Barrett-Lennard, L., Heise, K. and Ellis, G. (2000) Foraging strategies of sympatric killer whale (Orcinus orca) populations in Prince William Sound, Alaska. Marine Mammal Science 16, 94–109.CrossRefGoogle Scholar
Sigurjónsson, J. and Víkingsson, G.A. (1997) Seasonal abundance of estimated food consumption by cetaceans in Icelandic and adjacent waters. Journal of Northwest Atlantic Fisheries Science 22, 271–287.CrossRefGoogle Scholar
Stensland, E., Angerbjörn, A. and Berggren, P. (2003) Mixed species groups in mammals. Mammal Review 33, 205–223.CrossRefGoogle Scholar
Stockin, K.A. (2008) The New Zealand common dolphin (Delphinus sp.)—identity, ecology and conservation. PhD thesis. Massey University, Auckland, New Zealand.Google Scholar
Weir, C.R., Pollock, C., Cronin, C. and Taylor, S. (2001) Cetaceans of the Atlantic Frontier, north and west of Scotland. Continental Shelf Research 21, 1047–1071.CrossRefGoogle Scholar
Würsig, B. and Würsig, M. (1980) Behavior and ecology of dusky dolphins, Lagenorhynchus obscurus, in the South Atlantic. Fishery Bulletin 77, 871–890.Google Scholar
Würsig, B., Duprey, N. and Weir, J. (2007) Dusky dolphins (Lagenorhynchus obscurus) in New Zealand waters: present knowledge and research goals. DOC Research and Development Series 270, 1–28. Wellington, New Zealand: Department of Conservation Press, Wellington, New Zealand.Google Scholar
Zheng, X., Pierce, G.J. and Reid, D.G. (2001) Spatial patterns of whiting abundance in Scottish waters and relationships with environmental variables. Fisheries Research 50, 259–270.CrossRefGoogle Scholar