Eavesdropping on dolphins: Investigating the habits of bottlenose dolphins (Tursiops truncatus) through fixed acoustic stations


Autoři: Jessica Alessi aff001;  Alberta Mandich aff001;  Maurizio Wurtz aff001;  Chiara Paoli aff001;  Carlo Nike Bianchi aff001;  Carla Morri aff001;  Paolo Povero aff001;  Marco Brunoldi aff004;  Giorgio Bozzini aff004;  Alessandra Casale aff004;  Daniele Grosso aff004;  Valentina Cappanera aff005;  Giorgio Fanciulli aff005;  Christian Melchiorre aff006;  Gianni Viano aff006;  Massimiliano Bei aff007;  Nicola Stasi aff007;  Mauro Gino Taiuti aff004;  Paolo Vassallo aff001
Působiště autorů: Department of the Earth, Environment and Life Science, University of Genova, Genova, Italy aff001;  Associazione Me.Ri.S. Mediterraneo Ricerca e Sviluppo, Favara, Agrigento, Italy aff002;  CIRCE - Interuniversity Center for Cetacean Research, Operative Unit of Genoa University, Genova, Italy aff003;  Department of Physics, University of Genova, Genova, Italy aff004;  Area Marina Protetta di Portofino, Ministry for the Environment and for the Protection of Territory and Sea, Santa Margherita Ligure, Genova, Italy aff005;  SOFTECO Sismat S.r.l, Genova, Italy aff006;  Direzione Marittima di Genova, Ministry for the Infrastructures and Transport, Genova, Italy aff007
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article
prolekare.web.journal.doi_sk: 10.1371/journal.pone.0226023

Souhrn

This study investigates the bottlenose dolphin (Tursiops truncatus, Montagu 1821) habitat use in the Portofino marine protected area (NW Italy) and adjacent waters, a core area for the dolphins and a highly touristic area in the Mediterranean Sea. A permanent automated real-time passive acoustic monitoring system, able to detect and track dolphins continuously, was tested in the area within the activities of the Life+ Nature project ARION. The habits of bottlenose dolphins was investigated considering the resident rate inside the area, which quantifies the amount of time dolphins spent in these waters, by means of random forest regression. The dependency of dolphin resident rate was analyzed in relation to four explanatory variables: sea surface temperature, season, time of day, and proximity to the coast. Dolphins spent more time in the area during spring and when sea surface temperature ranged between 15–16°C. Summer resulted the season with lower dolphin residency with significant difference between working day and weekend, in the last the lowest residency was recorded. Main findings provide important information to properly manage the area in order to protect bottlenose dolphins.

Klíčová slova:

Bioacoustics – Boats – Conservation science – Dolphins – Habits – Machine learning – Seasons – Marine conservation


Zdroje

1. Wells R. S., Rhinehart H. L., Hansen L. J., Sweeney J. C., Townsend F. I., Stone R., et al. Bottlenose dolphins as marine ecosystem sentinels: developing a health monitoring system. EcoHealth, 1(3), 246–254(2004).

2. Hooker S.K., Gerber L.R. Marine reserves as a tool for ecosystem based management: the potential importance of megafauna. Bioscience 54(1), 27–39 (2004).

3. Bearzi, G., Fortuna, C.M. Common bottlenose dolphin Tursiops truncatus (Mediterranean subpopulation). In Reeves, R., Notarbartolo di Sciara, G. (compilers and editors). The status and distribution of cetaceans in the Black Sea and Mediterranean Sea. IUCN Centre for Mediterranean Cooperation, Malaga, Spain. pp. 64–73 (2006).

4. Bearzi, G., Fortuna, C. & Reeves, R. Tursiops truncatus. The IUCN Red List of Threatened Species 2012: e.T22563A2782611, (2012).

5. Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora. http://www.central2013.eu/fileadmin/user_upload/Downloads/Document_Centre/OP_Resources/HABITAT_DIRECTIVE_92-43-EEC.pdf (1992)

6. Wilson B., Thompson P.M., Hammond P.S. Habitat use by bottlenose dolphins: seasonal distribution and stratified movement patterns in the Moray Firth, Scotland. Journal of Applied Ecology 34, 1365–1374 (1997).

7. Ballance L.T. Habitat use patterns and ranges of the Bottlenose Dolphin in the Gulf of California, Mexico. Marine Mammal Science 8(3), 262–274 (1992).

8. Harzen S. Habitat use by the bottlenosed dolphin (Tursiops truncatus) in the Sado Estuary, Portugal. Aquatic Mammals 24, 117–128 (1998).

9. Barco S.G., Swingle W.M., Mlellan W.A., Harris R.N., Pabst D.A. Local abundance and distribution of bottlenose dolphins (Tursiops truncatus) in the nearshore waters of Virginia Beach, Virginia. Marine Mammal Science 15(2), 394–408 (1999).

10. La Manna G., Manghi M., Pavan G., Lo Mascolo F., Sarà G. Behavioural strategy of common bottlenose dolphins (Tursiops truncatus) in response to different kinds of boats in the waters of Lampedusa Island (Italy). Aquatic Conservation: Marine and Freshwater Ecosystems 23(5), 745–757 (2013).

11. Cafaro V., Angeletti D., Bellisario B., Macali A., Carere C., Alessi J. Habitat overlap between bottlenose dolphins and seabirds: a pilot study to identify high-presence coastal areas in the Tyrrhenian Sea. Journal of the Marine Biological Association of the United Kingdom 96(4), 891–901 (2016).

12. McBride S.M. Habitat use by bottlenose dolphins, Tursiops truncatus, in Roanoke Sound, North Carolina. The University of Southern Mississippi (2016).

13. Culik, B.M. Odontocetes—The toothed whales. CMS Technical Series No. 24. Bonn, Germany 312 pp. ISBN 978-3-937429-92-2 (2011).

14. Carnabuci M., Schiavon G., Bellingeri M., Fossa F., Paoli C., Vassallo P., et al. Connectivity in the network macrostructure of Tursiops truncatus in the Pelagos Sanctuary (NW Mediterranean Sea): does landscape matter?. Population ecology, 58(2), 249–264 (2016).

15. Alessi J., Fiori C. From science to policy—a geostatistical approach to identifying potential areas for cetacean conservation: a case study of bottlenose dolphins in the Pelagos sanctuary (Mediterranean Sea). Journal of coastal conservation 18(4), 449–458 (2014).

16. Venturini S., Massa F., Castellano M., Fanciulli G., Povero P. Recreational boating in Portofino Marine Protected Area (MPA), Italy: characterization and analysis in the last decade (2006–2016) and some considerations on management. Marine Policy (2018).

17. Brunoldi M., Bozzini G., Casale A., Corvisiero P., Grosso D., Magnoli N., et al. A permanent automated real-time passive acoustic monitoring system for bottlenose dolphin conservation in the Mediterranean sea. PloS one 11(1), e0145362 (2016). doi: 10.1371/journal.pone.0145362 26789265

18. Notarbartolo di Sciara G, Agardy T, Hyrenbach D, Scovazzi T, Van Klaveren P. The Pelagos sanctuary for Mediterranean marine mammals. Aquatic Conservation: Marine and Freshwater Ecosystems 18 (4): 367–391 (2008).

19. Marini C., Fossa F., Paoli C., Bellingeri M., Gnone G., Vassallo P. Predicting bottlenose dolphin distribution along Liguria coast (northwestern Mediterranean Sea) through different modeling techniques and indirect predictors. J. Environ. Manage 150, 9–20 (2015). doi: 10.1016/j.jenvman.2014.11.008 25460419

20. Venturini S., Massa F., Castellano M., Costa S., Lavarello I., Olivari E., et al. Recreational boating in Ligurian Marine Protected Areas (Italy): A quantitative evaluation for a sustainable management. Environmental management 57(1), 163–175 (2016). doi: 10.1007/s00267-015-0593-y 26289349

21. Paoli C., Povero P., Burgos E., Dapueto G., Fanciulli G., Massa F., et al. Natural capital and environmental flows assessment in marine protected areas: The case study of Liguria region (NW Mediterranean Sea). Ecological Modelling 368, 121–135 (2018).

22. Fiori C., Giancardo L., Aïssi M., Alessi J., Vassallo P. Geostatistical modelling of spatial distribution of sperm whales in the Pelagos Sanctuary based on sparse count data and heterogeneous observations. Aquatic Conservation: Marine and Freshwater Ecosystems, 24(S1), 41–49 (2014).

23. Carlucci R., Fanizza C., Cipriano G., Paoli C., Russo T., Vassallo P. Modeling the spatial distribution of the striped dolphin (Stenella coeruleoalba) and common bottlenose dolphin (Tursiops truncatus) in the Gulf of Taranto (northern Ionian Sea, central-eastern Mediterranean Sea). Ecol. Indic 69, 707–721 (2016).

24. Azzellino A., Panigada S., Lanfredi C., Zanardelli M., Airoldi S., Di Sciara G. N. Predictive habitat models for managing marine areas: spatial and temporal distribution of marine mammals within the Pelagos Sanctuary (Northwestern Mediterranean sea). Ocean & coastal management, 67, 63–74 (2012).

25. Breiman L. Random forests. Machine learning, 45(1), 5–32 (2001).

26. Efron B. Computers and the theory of statistics: thinking the unthinkable. SIAM review 21(4), 460–480 (1979).

27. Matsuki K., Kuperman V., Van Dyke J.A. The Random Forests statistical technique: An examination of its value for the study of reading Sci Stud Read. 20(1), 20–33 (2016). doi: 10.1080/10888438.2015.1107073 26770056

28. Hastie T., Tibshirani R., Friedman J. The Elements of Statistical Learning (2001).

29. Carlucci R., Cipriano G., Paoli C., Ricci P., Fanizza C., Capezzuto F., et al. Random Forest population modelling of striped and common bottlenose dolphins in the Gulf of Taranto (Northern Ionian Sea, Central-eastern Mediterranean Sea). Estuarine, Coastal and Shelf Science 204, 177–192 (2018).

30. MATLAB version 9.2. Natick, Massachusetts: The MathWorks Inc. (2017).

31. Dolphin B. Occurrence, movements, and distribution of bottlenose dolphin, Tursiops truncatus, in southern Texas. Fishery Bulletin 78(3), 593–601 (1980).

32. Maze K.S., Würsig B. Bottlenosed dolphins of San Luis Pass, Texas: Occurrence patterns, site-fidelity, and habitat use. Aquatic Mammals 25, 91–104 (1999).

33. Temple A.J., Tregenza N., Amir O.A., Jiddawi N., Berggren P. Spatial and temporal variations in the occurrence and foraging activity of coastal dolphins in Menai Bay, Zanzibar, Tanzania. PloS one 11(3), e0148995 (2016). doi: 10.1371/journal.pone.0148995 26934473

34. Baş A.A., Erdoğan M.A., Morris N.R.C., Yeoman K., Humphrey O., Gaggioli E., et al. Seasonal encounter rates and residency patterns of an unstudied population of bottlenose dolphin (Tursiops truncatus) in the northwestern Levantine Sea, Turkey. Hyla: Herpetological bulletin 2016(1), 1–13 (2017).

35. Alessi J., Bruccoleri F., Cafaro V. How citizens can encourage scientific research: The case study of bottlenose dolphins monitoring. Ocean & Coastal Management, 167, 9–19 (2019).

36. Alessi, J. Studio della popolazione di Tursiops truncatus (Montagu, 1821) in Mar Ligure e Tirreno Settentrionale finalizzato alla sua conservazione. PhD thesis, Genoa University (2013).

37. Fogg, T.J. Dolphin presence/absence probabilities on the Virginia and North Carolina coasts as correlated with sea surface temperature and chlorophyll-/spl alpha/levels. In Geoscience and Remote Sensing Symposium. IGARSS'05. Proceedings. IEEE International 3, pp. 1608–1611) (2005).

38. Orsi Relini L., Cappello M., Poggi R. The stomach content of some bottlenose dolphins (Tursiops truncatus) from the Ligurian Sea. European Research on Cetaceans 8, 192–195 (1994).

39. Astruc, G. Exploitation des chaines trophiques marines de Mediterranee par les populations de cetaces. In Ecole Pratique des Hautes Etudes. Master Thesis: Montpellier, France (2005).

40. Fossa F., Lammers M.O., Orsi Relini L. Measuring interactions between common bottlenose dolphin(Tursiops truncatus) and artisanal fisheries in the Ligurian Sea: net damage and catch variations. Biologia marina mediterranea 18(1), 182–183 (2011).

41. Lloret J., Lleonart J., Solé I., Fromentin J.M. Fluctuations of landings and environmental conditions in the north-western Mediterranean Sea. Fisheries Oceanography 10(1), 33–50 (2001).

42. Pepin P. Effect of temperature and size on development, mortality and survival rates of the pelagic early life history stages of marine fish. Can. J. Fish. Aquat. Sci. 48, 503–518 (1991).

43. Otterlei E., Nyhammer G., Folkvord A., Stefansson S.O. Temperature- and size-dependant growth of larval and early juvenile Atlantic cod (Gadus morhua): a comparative study of Norwegian coastal cod and northeast Arctic cod. Can. J. Fish. Aquat. Sci. 56, 2099–2111 (1999).

44. Ellersten B., Fossum P., Solemdal P., Sundby S. Relation between temperature and survival of eggs and first feeding larvae of northeast Arctic cod (Gadus morhua L.). Rapp. P.-v. Réun. Cons. int. Explor. Mer 191, 209–219 (1989).

45. Brander K.M. The effect of temperature on growth of Atlantic cod (Gadus morhua, L.). ICES J. Mar. Sci. 52, 1–10 (1995).

46. Tyler A.V. Warm-water and cool-water stocks of Pacific cod (Gadus macrocephalus): a comparative study of reproductive biology and stock dynamics. Climate change and northern fish populations. Can. Spec. Publ. Fish. Aquat. Sci. 121, 537–545 (1995).

47. Hutchings J.A., Myers R.A. What can be learned from the collapse of a renewable resource? Atlantic cod, Gadus morhua, of Newfoundland and Labrador. Can. J. Fish. Aquat. Sci. 51, 2126–2146 (1994).

48. Flett P.A., Munkittrick K.R., Van Der Kraar G., Leatherland J.F. Overripening as the cause of low survival to hatch in Lake Erie coho salmon (Oncorhyncus kisutch) embryos. Can. J. Zool. 74, 851–857 (1996).

49. Macpherson E., Masó M., Barange M., Gordoa A. Relationship between measurements of hake biomass and sea surface temperature off southern Namibia. South African Journal of Marine Science 10(1), 213–217 (1991).

50. Recasens L., Lombarte A., Morales-Nin B., Tores G.J. Spatiotemporal variation in the population structure of the European hake in the NW Mediterranean. Journal of fish biology 53(2), 387–401 (1998).

51. Cafaro V., Piazzolla D., Melchiorri C., Burgio C., Fersini G., Conversano F., et al. Underwater noise assessment outside harbor areas: The case of Port of Civitavecchia, northern Tyrrhenian Sea, Italy. Marine pollution bulletin, 133, 865–871 (2018). doi: 10.1016/j.marpolbul.2018.06.058 30041388

52. Buscaino G., Ceraulo M., Pieretti N., Corrias V., Farina A., Filiciotto F., et al. Temporal patterns in the soundscape of the shallow waters of a Mediterranean marine protected area. Scientific reports, 6, 34230 (2016). doi: 10.1038/srep34230 27677956

53. Constantine R., Brunton D. H., Dennis T. Dolphin-watching tour boats change bottlenose dolphin (Tursiops truncatus) behaviour. Biological conservation, 117(3), 299–307 (2004).

54. Heiler J., Elwen S. H., Kriesell H. J., Gridley T. Changes in bottlenose dolphin whistle parameters related to vessel presence, surface behaviour and group composition. Animal Behaviour, 117, 167–177 (2016).

55. Janik V. M., Thompson P. M. Changes in surfacing patterns of bottlenose dolphins in response to boat traffic. Marine mammal science, 12(4), 597–602 (1996).

56. Nowacek S. M., Wells R. S., Solow A. R. Short-term effects of boat traffic on bottlenose dolphins, Tursiops truncatus, in Sarasota Bay, Florida. Marine Mammal Science, 17(4), 673–688 (2001).

57. Allen M.C., Read A.J. Habitat selection of foraging bottlenose dolphins in relation to boat density near Clearwater, Florida. Marine Mammal Science 16(4), 815–824 (2000).

58. Lusseau D. The hidden cost of tourism: detecting long-term effects of tourism using behavioral information. Ecology and Society 9(1), 2 (2004).

59. Lusseau D. Residency pattern of bottlenose dolphins Tursiops spp. in Milford Sound, New Zealand, is related to boat traffic. Marine Ecology Progress Series 295, 265–272 (2005).

60. Bejder L., Samuels A., Whitehead H., Gales N. Interpreting short-term behavioural responses to disturbance within a longitudinal perspective. Animal Behaviour 72(5), 1149–1158 (2006).

61. International Whaling Commission. Report of the sub-committee on whale watching. Journal of Cetacean Research and Management 9, 326–340 (2007).

62. Alessi J., Aïssi M., Fiori C. Photo-identification of sperm whales in the north-western Mediterranean Sea: an assessment of natural markings. Aquatic Conservation: Marine and Freshwater Ecosystems, 24(S1), 11–22 (2014).

63. Panigada S., Pesante G., Zanardelli M., Capoulade F., Gannier A., Weinrich M. T. Mediterranean fin whales at risk from fatal ship strikes. Marine Pollution Bulletin, 52(10), 1287–1298 (2006). doi: 10.1016/j.marpolbul.2006.03.014 16712877


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