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Vessel traffic affects bottlenose dolphin (Tursiops truncatus) behaviour in waters surrounding Lampedusa Island, south Italy

Published online by Cambridge University Press:  22 July 2011

Elena Papale ,
Marta Azzolin  and
Cristina Giacoma
Elena Papale*
Affiliation:
University of Torino, via Accademia Albertina 13, 10123 Torino, Italy
Marta Azzolin
Affiliation:
University of Torino, via Accademia Albertina 13, 10123 Torino, Italy
Cristina Giacoma
Affiliation:
University of Torino, via Accademia Albertina 13, 10123 Torino, Italy
*
Correspondence should be addressed to: E. Papale, University of Torino, via Accademia Albertina, 13 10123 Torino, Italy email: [email protected]
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Abstract

Since 2003, as part of the LIFE project ‘Del.Ta.’ (NAT/IT/000163) a bottlenose dolphin community has been studied in order to assess the impact of increasing boat traffic in the Pelagie Archipelago (Sicily, Italy). During the summer of 2006 and 2008, land-based surveys were carried out at Lampedusa, one of the Archipelago's Islands, at set hours from 6 locations (7 in 2008) in standard weather conditions. Continuous horizon scanning and focal group sampling methods were used to study dolphin presence and behaviour. Dolphin–boat interactions were recorded for each sighting. A total of approximately 559 hours were spent monitoring and 83 sightings were recorded. With regard to the different types of vessels, interaction with sailing boats was always neutral, whereas fast boats caused the interruption of all activities and avoidance behaviour. Positive interaction occasionally occurred with bottom trawling fishing boats. Interactions recorded when fishing and powered engine boats approached within 200 m predominantly resulted in a negative reaction from the dolphins (approximately 70%) and dolphin behaviour was affected in terms of occurrence and patterns. Behavioural analysis showed that the animals reduced the frequency of behaviours related to feeding, social and relaxing activities. The dolphins also increased information-gathering behaviour such as spyhopping. The use of Markovian chain models revealed evidence of disruptions in sub-sequences made up of behaviours often associated with feeding. After boat departures, the animals rarely restarted their previous activity and persistence of this effect could have long-term consequences as a result of non-habituation. Sighting duration also decreased in the presence of vessels. The possible negative long-term effect of the presence of boats may be indicated by the lower mean sighting duration in 2008, when the highest presence of powered engine boats was recorded. In view of the scenario outlined above, local authorities need to enforce the requirement of maintaining a distance of over 200 m away from the animals for all types of boat and also promote regular land-based surveys of vessel impacts for tourist boats and dolphin watching cruises.

Keywords

Tursiops truncatusbehaviourLampedusaboat trafficland-based survey
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 92 , Issue 8: Marine Mammals , December 2012 , pp. 1877 - 1885
Copyright
Copyright © Marine Biological Association of the United Kingdom 2011

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References

REFERENCES

Acevedo, A. (1991) Interaction between boats and bottlenose dolphins, Tursiops truncatus, in the entrance to Ensenada De La Pax, Messico. Acquatic Mammals 17, 120–124.Google Scholar
Aguilar, A., Forcada, J., Borrell, A., Silvani, L., Grau, E., Gazo, M., Calzada, N., Pastor, T., Badosa, E., Arderiu, A. and Samaranch, R. (1994) Inventario de cetáceos mediterráneos ibéricos: status y problemas de conservación. Unpublished Report, University of Barcelona, Spain.Google Scholar
Altmann, J. (1974) Observational study of behaviour: sampling methods. Behaviour 49, 227–267.CrossRefGoogle ScholarPubMed
Aragones, L.V., Jefferson, T.A. and Marsh, H. (1997) Marine mammal survey techniques applicable in developing countries. Asian Marine Biology 14, 15–39.Google Scholar
Arcangeli, A. and Crosti, R. (2009) The short-term impact of dolphin-watching on the behaviour of bottlenose dolphins (Tursiops truncatus) in western Australia. Journal of Marine Animals and their Ecology 2, 7 pp.Google Scholar
Azzolin, M., Celoni, F., Galante, I., Giacoma, C. and La Manna, G. (2007) Action Plan for the Pelagie Archipelago bottlenose community. 83 pp. http://www.provincia.agrigento.it/flex/cm/pages/ServeBLOB.php/L/IT/IDPagina/977Google Scholar
Azzolin, M. (2008). Identificazione acustica degli odontoceti del Mediterraneo come prerequisito per il monitoraggio acustico passivo. PhD thesis. University of Torino, Italy.Google Scholar
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.CrossRefGoogle ScholarPubMed
Bearzi, G. (2002) Interactions between cetacean and fisheries in the Mediterranean Sea. In Notarbartolo di Sciara, G. (ed.) Cetaceans of the Mediterranean and Black Seas: state of knowledge and conservation strategies. A report to the ACCOBAMS Secretariat, Monaco, February 2002, Section 9, 20 pp.Google Scholar
Bearzi, G., Di Sciara, G. and Politi, E. (1997) Social ecology of bottlenose dolphins in the Kvarneric (Northern Adriatic Sea). Marine Mammal Science 13, 650–668.CrossRefGoogle Scholar
Bearzi, G. and Fortuna, C.M. (2006) Common bottlenose dolphin Tursiops truncatus (Mediterranean subpopulation). In Reeves, R.R. and Notarbartolo di Sciara, G. (eds) The status and distribution of cetaceans in the Black Sea and Mediterranean Sea. Malaga, Spain: IUCN Centre for Mediterranean Cooperation, pp. 64–73.Google Scholar
Beaubrun, P.C. (2002) Disturbance to Mediterranean cetaceans caused by whale watching. In Notarbartolo di Sciara, G. (ed.) Cetaceans of the Mediterranean and Black Seas: state of knowledge and conservation strategies. A report to the ACCOBAMS Secretariat, Monaco, Section 12, 26 pp.Google Scholar
Bejder, L., Dawson, S.M. and Harraway, J.A. (1999) Responses by Hector's dolphins to boats and swimmers in Porpoise Bay, New Zealand. Marine Mammal Science 15, 738–750.CrossRefGoogle Scholar
Borrel, A., Cantos, G., Pastor, T. and Aguilar, A. (2001) Organochlorine compounds in common dolphins (Delphinus delphis) from the Atlantic and Mediterranean waters of Spain. Environmental Pollution 114, 265–274.CrossRefGoogle Scholar
Canãdas, A., Sagarminaga, R., De Stephanis, R., Urquiola, E. and Hammond, P.S. (2005) Habitat preference modelling as a conservation tool: proposals for marine protected areas for cetaceans in Southern Spanish waters. Aquatic Conservation: Marine and Freshwater Ecosystems 15, 495–521.CrossRefGoogle Scholar
Caswell, H. (2001) Matrix population models. Boston, MA: Sinauer Associates.Google Scholar
Celoni, F., Azzolin, M., Galante, I. and Giacoma, C. (2009) Interaction between bottlenose dolphin and fishing at Lampedusa Island. In Abstracts of the 23rd Conference of the European Cetacean Society, Istanbul, Turkey, 2–4 March 2009, pp. 99–100.Google Scholar
Constantine, R., Brunton, D.H. and Dennis, T. (2004) Dolphin-watching tour boats change bottlenose dolphin (Tursiops truncatus) behaviour. Biological Conservation 117, 299–307.CrossRefGoogle Scholar
David, L. (2002) Disturbance to Mediterranean cetaceans caused by vessel traffic. In Notarbartolo di Sciara, G. (ed.) Cetaceans of the Mediterranean and Black Seas: state of knowledge and conservation strategies. A report to the ACCOBAMS Secretariat, Monaco, February 2002, Section 11, 21 pp.Google Scholar
Evans, P.G.H. (1992) Status review of cetaceans in British and Irish waters. Report to UK Department of the Environment. Oxford: Sea Watch Foundation, 98 pp.Google Scholar
Frohoff, T.G. and Dudzinski, K.M. (2001) Odontocete–human interactions: implications of literature review and practical application for management. In Spradlin T.R., Nitta T.E., Lewandowski J.K., Barre L.M., Brix K. and Norberg B. (eds) Viewing Marine Mammals in the Wild: A Workshop to Discuss Responsible Guidelines and Regulations for Minimizing Disturbance. A Pre-Conference Workshop held before the 1th Biennial Conference on the Biology of Marine Mammals Vancouver, British Columbia, Canada, 28 November 2001, pp. 86–88.Google Scholar
Gnone, G., Caltavuturo, G., Ferrando, P. and Fossa, F. (2003) Inshore cetaceans and anthropized environment. ‘Delfini Metropolitani’: 18 months of data. European Research on Cetaceans—17, Proceedings of the 17th Annual Conference of the ECS.Google Scholar
Guttorp, P. (1995) Stochastic modelling of scientific data. New York: Chapman & Hall.CrossRefGoogle Scholar
La Manna, G., Clò, S., Papale, E. and Sarà, G. (2010) Boat traffic in Lampedusa waters (Strait of Sicily, Mediterranean Sea) and its relation to the coastal distribution of common bottlenose dolphin (Tursiops truncatus). Ciencias Marinas 36, 71–81.CrossRefGoogle Scholar
Lemon, M., Lynch, T.P., Cato, D.H. and Harcourt, R.G. (2006) Response of travelling bottlenose dolphins (Tursiops aduncus) to experimental approaches by a powerboat in Jervis Bay, New South Wales, Australia. Biological Conservation 127, 363–372.CrossRefGoogle Scholar
Liret, C. (2001) Domaine vital, utilisation de l'espace et des ressources: les grands dauphins, Tursiops truncatus, de l'île de Sein. Thèse de doctorat. Université de Bretagne Occidentale, Brest, 155 pp.Google Scholar
Lusseau, D. (2003a) Effects of tour boats on the behaviour of bottlenose dolphins: using Markov chains to model anthropogenic impacts. Conservation Biology 17, 1785–1793.CrossRefGoogle Scholar
Lusseau, D. (2003b) Male and female bottlenose dolphins Tursiops spp. have different strategies to avoid interactions with tour boats in Doubtful Sound, New Zealand. Marine Ecology Progress Series 257, 267–274CrossRefGoogle Scholar
Lütkebohle, T. (1996) Potential avoidance behaviour of bottlenose dolphins to vessels in the Kessock Channel, Moray Firth, Scotland. In Proceedings of the 10th Annual Conference of the European Cetacean Society, Lisbon, Portugal, 11–13 March, 1996, pp. 53–55.Google Scholar
Mann, J. (1999) Behavioural sampling methods for cetaceans: a review and critique. Marine Mammal Science 15, 102–122.CrossRefGoogle Scholar
Martinez, D.R. and Klinghammer, E. (1978) A partial ethogram of the killer whale (Orcinus orca L.). Carnivore 3, 13–27.Google Scholar
Mattson, M.C., St Aubin, D. and Thomas, J. (1999) The effect of boat activity on the behaviour of bottlenose dolphins (Tursiops truncatus) in the nearshore waters of Hilton Head, south Carolina. In Abstracts of the 13th Biennial Conference of the Society of Marine Mammalogy on the Biology of Marine Mammals, Wailea, Maui, Hawaii, 28 November–3 December 1999, pp. 37–38.Google Scholar
Mattson, M.C., Thomas, J.A. and St Aubin, D. (2005) Effects of boat activity on the behaviour of bottlenose dolphins (Tursiops truncatus) in waters surrounding Hilton Head Island, South Carolina. Aquatic Mammals 31, 133–140.CrossRefGoogle Scholar
Miller, L.J., Solangi, M. and Kuczaj, S.A. (2008) Immediate response of Atlantic bottlenose dolphins to high-speed personal watercraft in the Mississippi Sound. Journal of the Marine Biological Association of the United Kingdom 88, 1139–1143.CrossRefGoogle Scholar
Muller, M., Boutiere, H., Weaver, A. and Candelon, N. (1998) Ethogram of the bottlenose dolphin (Tursiops truncatus) with special reference to solitary and sociable dolphins. Vie et Milieu 48, 89–104. [English translation.]Google Scholar
Notarbartolo di Sciara, G. and Demma, Y.M. (1994) Guida dei mammiferi marini del Mediterraneo. Padova: Franco Muzzio Editore.Google Scholar
Notarbartolo di Sciara, G., Jahoda, M., Biassoni, N. and Lafortuna, C. (1996) Reactions of fin whales to approaching vessels assessed by means of a laser range finder. In Proceedings of the 10th Annual Conference of the European Cetacean Society, Lisbon, Portugal 11–13 March 1996, pp. 38–42.Google Scholar
Notarbartolo di Sciara, G. (2002) Cetaceans of the Mediterranean and Black Seas: state of knowledge and conservation strategies. A Report to the ACCOBAMS Interim Secretariat.Google Scholar
Nowacek, S., Wells, R. and Solow, A. (2001) Short-term effects of boat traffic on bottlenose dolphins, Tursiops truncatus, in Sarasota Bay, Florida. Marine Mammal Science 17, 673–688.CrossRefGoogle Scholar
Polacheck, T. and Thorpe, L. (1990) The swimming direction of harbour porpoise in relation to survey vessel. Report of the International Whaling Commission 40, 463–470.Google Scholar
Reeves, R. and Notarbartolo Di Sciara, G. (2006) The status and distribution of cetaceans in the Black Sea and Mediterranean Sea. Malaga, Spain: International Union for Conservation of Nature and Natural Resources (IUCN) Centre for Mediterranean Cooperation, 137 pp.Google Scholar
Reynolds, J.E. III, Wells, R.S. and Eide, S.D. (2000) Biology and conservation of the bottlenose dolphin. Gainesville, FL: University Press of Florida.Google Scholar
Richardson, W.J., Greene, C.R. Jr, Malme, C.I. and Thomson, D.H. (1995) Marine mammals and noise. San Diego, CA: Academic Press, 576 pp.Google Scholar
Roussel, E. (2002) Disturbance to Mediterranean cetaceans caused by noise. In Notarbartolo di Sciara, G. (ed.) Cetaceans of the Mediterranean and Black Seas: state of knowledge and conservation strategies. A report to the ACCOBAMS Secretariat, Monaco, February 2002, Section 13, 18 pp.Google Scholar
Simmonds, M. and Nunny, L. (2002) Cetacean habitat loss and degradation in the Mediterranean Sea. In Notarbartolo di Sciara, G. (ed.) Cetaceans of the Mediterranean and Black Seas: state of knowledge and conservation strategies. A report to the ACCOBAMS Secretariat, Monaco, February 2002, Section 7, 23 pp.Google Scholar
Sini, M.I., Canning, S.J., Stockin, K.A. and Pierce, G.J. (2005) Bottlenose dolphins around Aberdeen harbour, north-east Scotland: a short study of habitat utilization and the potential effects of boat traffic. Journal of the Marine Biological Association of the United Kingdom 85, 1547–1554.CrossRefGoogle Scholar
Srebreva, I., Colmenares, F., Fortuna, C.M. and Canadas, A. (2009) Comparative approach and analysis of shifts in behaviour patterns in bottlenose dolphin Tursiops truncatus from the Alboran and Adriatic Seas. In Abstracts of the 23rd Conference of the European Cetacean Society, Istanbul, Turkey, 2–4 March 2009, pp. 99–100.Google Scholar
Underhill, K. (2006) Boat traffic effects on the diving behaviour of bottlenose dolphins (Tursiops truncatus Montagu) in Sardinia, Italy. MSc thesis. University of Wales, Bangor, in association with the Bottlenose Dolphin Research Institute.Google Scholar
Wafo, E., Sarrazin, T.L., Diana, C., Dhermain, F., Schembri, T., Lagadec, V., Pecchia, M. and Rebouillon, P. (2005) Accumulation and distribution of organochlorines (PCBs and DDTs) in various organs of Stenella coeruleoalba and a Tursiops truncatus from Mediterranean littoral environment (France). Science of the Total Environment 348, 115–127.CrossRefGoogle Scholar
Wells, R.S. and Scott, M.D. (1999) Bottlenose dolphin Tursiops truncatus (Montagu 1821). In Ridgway, S.H. and R. Harrison, R. (eds) Handbook of marine mammals, Volume 6, the second book of dolphins and porpoises. San Diego, CA: Academic Press, pp. 137–182.Google Scholar