Movement patterns of coastal bottlenose dolphins in the presence of a fast-flowing, prevailing current: shore-based observations at Cape Vidal, South Africa

African Journal of Marine Science

Volumn 33, Issue 3, 2011, Pages 393-401

  Photopoulou, T ^a   Best, P B ^b   Hammond, P S ^a   Findlay, K P ^c  

^a UNIVERSITY OF ST ANDREWS   (United Kingdom)

^b IZIKO SOUTH AFRICAN MUSEUM   (South Africa)

^c UNIVERSITY OF CAPE TOWN   (South Africa)

Author keywords

Agulhas Current; generalised estimating equation; generalised linear model; sightings; theodolite; Tursiops aduncus

Indexed keywords

BIOLOGICAL SURVEY; COASTAL CURRENT; CONTINENTAL SHELF; DATA SET; DOLPHIN; MIGRATION; MOVEMENT; NUMERICAL MODEL; SPECIES OCCURRENCE; TEMPORAL ANALYSIS; WHALE;

AGULHAS CURRENT; CAPE VIDAL; INDIAN OCEAN; KWAZULU-NATAL; SOUTH AFRICA;

MEGAPTERA; MEGAPTERA NOVAEANGLIAE; TURSIOPS; TURSIOPS ADUNCUS;

EID: 84856106402     PISSN: 1814232X     EISSN: 18142338     Source Type: Journal    
DOI: 10.2989/1814232X.2011.637346     Document Type: Article

References (46)

1. Bailey, H and Lusseau, D. 2004. Increasing the precision of theodolite tracking: modified technique to calculate the altitude of landbased observation sites. Marine Mammal Science, 20: 880-885.
2. Bailey, H and Thompson, P. 2006. Quantitative analysis of bottlenose dolphin movement patterns and their relationship with foraging. Journal of Animal Ecology, 75: 456-465.
3. Boness, D J, Clapham, P J and Mesnick, S L. 2002. "Life history and reproductive strategies". In Marine mammal biology: an evolutionary approach, Edited by: Hoelzel, R A. 278-324. Bodwin: Blackwell Publishing.
4. Carey, VJ. 2010. Yags: Yet Another GEE Solver, version 6.1-9/r41: R package. Available at http://R-Forge.R-project.org/projects/yags/ [accessed 17 September 2010]
5. Cockcroft, VG. 1992. Incidental capture of bottlenose dolphins (Tursiops truncatus) in shark nets: an assessment of some possible causes. Journal of Zoology, 226: 123-134. London
6. Cockcroft, V G and Ross, G JB. 1990a. "Food and feeding of the Indian Ocean bottlenose dolphin off southern Natal, South Africa". In The bottlenose dolphin, Edited by: Leatherwood, S and Reeves, R. 295-308. San Diego, California: Academic Press.
7. Cockcroft, V G and Ross, G JB. 1990. Age, growth, and reproduction of bottlenose dolphins Tursiops truncatus from the east coast of southern Africa. Fishery Bulletin [US], 88: 289-302.
8. Cockcroft, V G, Ross, G JB and Peddemors, V M. 1990. Bottlenose dolphin Tursiops truncatus distribution in Natal's coastal waters. South African Journal of Marine Science, 9: 1-10.
9. Cockcroft, V G, Ross, G JB and Peddemors, V M. 1991. Distribution and status of bottlenose dolphin Tursiops truncatus on the south coast of Natal, South Africa. South African Journal of Marine Science, 11: 203-209.
10. Findlay, KP. 1994. The migrations of East Coast humpback whales (Megaptera novaeangliae), South Africa: University of Pretoria. PhD thesis
11. Findlay, K P and Best, P B. 1996a. Assessment of the heterogeneity in sighting probabilities of humpback whales within viewing range of Cape Vidal, South Africa. Marine Mammal Science, 12: 335-353.
12. Findlay, K P and Best, P B. 1996b. Estimates of the numbers of humpback whales observed migrating past Cape Vidal, South Africa, 1988-1991. Marine Mammal Science, 12: 354-370.
13. Findlay, K P, Best, P B and Meÿer, M A. 2011. "Migrations of humpback whales past Cape Vidal, South Africa, and an estimate of the population increase rate (1988-2002)". In Conservation biology of marine mammals in the southern African subregion. African Journal of Marine Science Edited by: Kirkman, S P, Elwen, S H, Pistorius, P A, Thornton, M and Weir, C R. Vol. 33, 375-392.
14. Findlay, K P, Best, P B, Ross, G JB and Cockcroft, V G. 1992. "The distribution of small odontocete cetaceans off the coasts of South Africa and Namibia". In South African Journal of Marine Science Edited by: Payne, A IL, Brink, K H, Mann, K H and Hilborn, R A. Vol. 12, 237-270. Benguela trophic functioning
15. Fish, FE. 1993. Power output and propulsive efficiency of swimming bottlenose dolphins (Tursiops truncatus). Journal of Experimental Biology, 185: 179-193.
16. Gailey, G A and Ortega-Ortiz, J G. 2002. A note on a computer-based system for theodolite tracking of cetaceans. Journal of Cetacean Research and Management, 4: 213-218.
17. Goodwin, J A, Durham, B D, Peddemors, V M and Cockcroft, V G. 1996. Genetic variation in the bottlenose dolphin Tursiops truncatus along the KwaZulu/Natal coast, South Africa. South African Journal of Marine Science, 17: 225-232.
18. Hardin, J W and Hilbe, J M. 2001. Generalized linear models and extensions, College Station, Texas: Stata Press.
19. Hardin, J W and Hilbe, J M. 2003. Generalized estimating equations, New York: Chapman & Hall/CRC.
20. Højsgaard, S, Halekoh, U and Yan, J. 2005. The R Package geepack for generalized estimating equations. Journal of Statistical Software, 15(2): 1-11.
21. Cooper, J and Roberts, M. 2000b. Upwelling at the inshore edge of the Agulhas Current. Continental Shelf Research, 20: 737-761. Lutjeharms JRE
22. Lutjeharms, J RE and de Ruijter, W PM. 1996. The influence of the Agulhas Current on the adjacent coastal ocean: possible impacts of climate change. Journal of Marine Systems, 7: 321-336.
23. Lutjeharms, J RE, Valentine, H R and van Ballegooyen, R C. 2000a. 401 hydrography and water masses of the Natal Bight, South Africa. The African Journal of Marine Science 2011, 33(3): 393-401. Continental Shelf Research 20 1907-1939
24. Nagelkerke, N. 1991. A note on the general definition of the coefficient of determination. Biometrika, 78: 691-692.
25. Natoli, A, Peddemors, V M and Hoelzel, R. 2008. Population structure of bottlenose dolphins (Tursiops aduncus) impacted by bycatch along the east coast of South Africa. Conservation Genetics, 9: 627-636.
26. Pan, W. 2001. Akaike's information criterion in generalized estimating equations. Biometrics, 57: 120-125.
27. Pearce, AF. 1977. Some features of the upper 500 m of the Agulhas Current. Journal of Marine Research, 35: 731-753.
28. Peddemors, VM. 1993. Bottlenose dolphin Tursiops truncatus research in Natal, South Africa: a review. Lammergeyer, 42: 24-34.
29. Peddemors, VM. 1999. Delphinids of southern Africa: a review of their distribution, status and life history. Journal of Cetacean Research and Management, 1: 157-165.
30. Philips, GL. 2006. Bottlenose dolphins (Tursiops aduncus) in Plettenberg Bay, South Africa: population estimates and temporal dynamics of groups, South Africa: MSc thesis, Nelson Mandela Metropolitan University.
31. R Development Core Team. 2010. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria Available at http://www.R-project.org [accessed 16 September 2010]
32. Reisinger, R R and Karczmarski, L. 2009. Population size estimate of Indo-Pacific bottlenose dolphins in the Algoa Bay region, South Africa. Marine Mammal Science, 26: 86-97.
33. Roberts, M J, Ribbink, A J, Morris, T, van den Berg, M A, Engelbrecht, D C and Harding, R T. 2006. Oceanographic environment of the Sodwana Bay coelacanths (Latimeria chalumnae), South Africa. South African Journal of Science, 102: 435-443.
34. Ross, GJB. 1977. The taxonomy of the bottlenose dolphins Tursiops species in South African waters, with notes on their biology. Annals of the Cape Provincial Museums, Natural History, 11: 135-194. (published jointly by the Cape Provincial Museums at the Albany Museum, Grahamstown, South Africa)
35. Ross, GJB. 1984. The smaller cetaceans of the south east coast of southern Africa. Annals of the Cape Provincial Museums, Natural History, 15: 173-410. (published jointly by the Cape Provincial Museums at the Albany Museum, Grahamstown, South Africa)
36. Ross, G JB, Cockcroft, V G and Butterworth, D S. 1986. Offshore distribution of bottlenose dolphins in Natal coastal waters and Algoa Bay, Eastern Cape. South African Journal of Zoology, 22: 50-57.
37. Ross, G JB, Cockcroft, V G, Melton, D A and Butterworth, D S. 1989. Population estimates for bottlenose dolphins Tursiops truncatus in Natal and Transkei waters. South African Journal of Marine Science, 8: 119-129.
38. Saayman, G S, Tayler, C K and Bower, D. 1973. Diurnal activity cycling in captive and free-ranging Indian Ocean bottlenose dolphins (Tursiops aduncus Ehrenberg). Behaviour, 44: 212-233.
39. Stevenson, M with contributions from, Nunes, T, Sanchez, J and Thornton, R. 2010. epiR: Functions for analysing epidemiological data, version 0.9-26: R package. http://CRAN.Rproject.org/package=epiR Available at [accessed 10 April 2011]
40. Stevick, P T, McConnell, B J and Hammond, P S. 2002. "Patterns of movement". In Marine mammal biology: an evolutionary approach, Edited by: Hoelzel, R A. 185-216. Bodmin: Blackwell Publishing.
41. Wang, Y and Carey, V J. 2004. Unbiased estimating equations from working correlation models for irregularly timed repeated measures. Journal of the American Statistical Association, 99: 845-853.
42. Williams, TM. 1999. "The evolution of cost efficient swimming in marine mammals: limits to energetic optimization". In Philosophical Transactions of the Royal Society B Vol. 354, 193-201. London
43. Williams, T M, Friedl, W A, Fong, M L, Yamada, R M, Sevidy, P and Haun, J E. 1992. Travel at low energetic cost by swimming and wave-riding bottlenose dolphins. Nature, 355: 821-823.
44. Yan, J. 2002. geepack: yet another package for generalized estimating equations. R-News, 2/3: 12-14.
45. Yan, J and Fine, J P. 2004. Estimating equations for association structures. Statistics in Medicine, 23: 859-880.
46. Yazdi, P, Killian, B and Culik, B M. 1999. Energy expenditure of swimming bottlenose dolphins (Tursiops truncatus). Marine Biology, 134: 601-607.