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Marine Biology

, Volume 151, Issue 4, pp 1501–1515 | Cite as

Habitat use by immature loggerhead sea turtles in the Algerian Basin (western Mediterranean): swimming behaviour, seasonality and dispersal pattern

  • M. Revelles
  • L. Cardona
  • A. Aguilar
  • M. San Félix
  • G. Fernández
Research Article

Abstract

To study habitat use by loggerhead sea turtles in the Algerian Basin (western Mediterranean), ten juveniles (straight carapace length range: 39.0–63.3 cm) were tracked by satellite from March 2004 to September 2005. Swimming behaviour (characterized by speed of travel, time spent at the surface, and the cosine of turning angles) varied individually, but these differences were unrelated to body size. Despite individual differences in swimming behaviour, the ten immature loggerhead sea turtles spent most of their time in the oceanic waters of the Algerian Basin, although simulations indicated that the average tracking time (235.7 ± 98.7 SD days) was sufficiently long for them to leave the Algerian Basin and disperse through most of the Mediterranean. Furthermore, none of the ten turtles swam in any preferred direction, and their bearings were all randomly distributed. Finally, all them consistently avoided the continental shelf and did not migrate seasonally, as the average latitude, the average longitude, and the average distance of the population to the release point did not change seasonally. Seasonality also had only a weak influence in swimming behaviour, as the time spent at the surface during light hours was the only parameter that changed seasonally. We conclude that immature loggerhead sea turtles in the south of the western Mediterranean exhibit a strong fidelity to the Algerian Basin, where distribution is ruled mainly by the bathymetry, without any influence of seasonality. That fidelity to the Algerian Basin matches predictions based on genetic structuring and might result from a combination of factors: surface circulation patterns and habitat selection by the loggerhead sea turtles.

Keywords

Swimming Behaviour Seasonal Migration Turning Angle Straight Carapace Length Neritic Habitat 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This study was funded by the EU project “Protección de Praderas de Posidonia en LICs de Baleares” LIFE00NAT/E/7303. The Fundació pel Desenvolupament Sostenible (FDS) provided logistic support for the fieldwork. Animals were instrumented under permit #2003/11 issued by the local government of the Balearic Islands (Conselleria de Medi Ambient del Govern de les Illes Balears) on 19 February, 2003.

References

  1. Argos (2000) User’s manual. CLS, Ramonville, FranceGoogle Scholar
  2. Avens L, Braun-McNeill J, Epperly S, Lohman K (2003) Site fidelity and homing behaviour in juvenile loggerhead sea turtles (Caretta caretta). Mar Biol 143:211–220CrossRefGoogle Scholar
  3. Balazs G, Miya R, Beavers S (1996) Procedures to attach a satellite transmitter to the carapace of an adult green turtle, Chelonia mydas. In: Keinath J, Barnard D, Musick J, Bell B (Comps) Proceedings of the fifteenth annual symposium on sea turtle biology and conservation. National atmospheric and oceanic administration technical memorandum NMFS-SEFSC-367, pp 21–26Google Scholar
  4. Bentivegna F (2002) Intra-mediterranean migration of loggerhead sea turtles monitored by satellite telemetry. Mar Biol 141:795–800CrossRefGoogle Scholar
  5. Bentivegna F, Paglialonga A (1998) Identification of the Gulf of Naples as a feeding ground and migratory path for Caretta caretta in the Mediterranean Sea. In: Abreu-Grobois FA, Briseño-Dueñas R, Márquez R, Sarti L (Comps) Proceedings of the eighteenth international symposium. National atmospheric and oceanic administration tech memo. NMFS-SEFSC-436, pp 95–97Google Scholar
  6. Bergman CM, Schaefer JA, Luttich SN (2000) Caribou movement as a correlated random walk. Oecologia 123:364–374CrossRefGoogle Scholar
  7. Bjorndal KA (1997) Foraging ecology and nutrition of sea turtles. In: Lutz PL, Musick JA (eds) The biology of sea turtles. CRC Press, Boca Raton, pp 199–232Google Scholar
  8. Bolten AB (2003) Active swimmers-passive drifters: the oceanic juvenile stage of loggerheads in the Atlantic system. In: Bolten AB, Witherington BE (eds) Loggerhead Sea Turtles. Smithsonian Institution Press, Washington, DC, pp 63–78Google Scholar
  9. Bosc E, Bricaud A, Antoine D (2004) Seasonal and interannual variability in algal biomass and primary production in the Mediterranean Sea, as derived from 4 years of SeaWiFS observations. Global Biogeochemical Cycles 18: GB1005 DOI:10.1029/2003GB002034CrossRefGoogle Scholar
  10. Bovet P, Benhamou S (1988) Spatial analysis of animals’ movements using a correlated random walk model. J theor Biol 131:419–433CrossRefGoogle Scholar
  11. Broderick AC, Glen F, Godley BJ, Hays GC (2002) Estimating the number of green and loggerhead turtles nesting annually in the Mediterranean. Oryx 36:227–235CrossRefGoogle Scholar
  12. Byers JA (2001) Correlated random walk equations of animal dispersal resolved by simulation. Ecology 82:1680–1690CrossRefGoogle Scholar
  13. Camiñas JA, de la Serna JM (1995) The loggerhead distribution in the western Mediterranean Sea as deduced from captures by the Spanish long line fishery. In: Llorente G, Montori A, Santos X, Carretero MA (eds) Scientia Herpetologica. Asociación Herpetológica Española, Barcelona, pp 316–323Google Scholar
  14. Camiñas JA (1997) Relación entre las poblaciones de la tortuga boba (Caretta caretta Linnaeus 1758) procedentes del Atlántico y del Mediterráneo en la región del Estrecho de Gibraltar y áreas adyacentes. Rev Esp Herpetol 11:91–98Google Scholar
  15. Camiñas JA, Báez JC, Valeiras X, Real R (2006) Differential loggerhead by-catch and direct mortality due to surface longlines according to boat strata and gear type. Sci Mar 70:661–665CrossRefGoogle Scholar
  16. Cardona L, Revelles M, Carreras C, San Félix M, Gazo M, Aguilar A (2005) Western Mediterranean immature loggerhead turtles: habitat use in spring and summer assessed through satellite tracking and aerial surveys. Mar Biol 147:583–591CrossRefGoogle Scholar
  17. Carreras C, Cardona L, Aguilar A (2004) Incidental catch of the loggerhead turtle Caretta caretta off the Balearic Islands (western Mediterranean). Biol Conserv 117:321–329CrossRefGoogle Scholar
  18. Carreras C, Pont S, Maffucci F, Pascual M, Barceló A, Bentivegna F, Cardona L, Alegre F, San Félix M, Fernández G, Aguilar A (2006) Genetic structuring of immature loggerhead sea turtles (Caretta caretta) in the Mediterranean Sea reflects water circulation patterns. Mar Biol 149:1269–1279CrossRefGoogle Scholar
  19. Chic O, Olivella R, Font J (2004–2005) “Satellite image database interface”, Centre Mediterrani d’Investigacions Marines i Ambientals, CSIC, Barcelona, Catalunya (Spain), http://www.ers.cmima.csic.es/
  20. Crowder LB (1990) Community ecology. In: Schreck CB, Moyle PB (eds) Methods for fish biology. American Fisheries Society, Bethesda, pp 609–632Google Scholar
  21. Davenport J, Clough W (1986) Swimming and diving in young loggerhead sea turtles (Caretta caretta L.). Copeia 1986:53–57CrossRefGoogle Scholar
  22. Dellinguer T, Freitas C (1999) Movements and diving behaviour of pelagic stage loggerhead sea turtles in the North Atlantic: preliminary results obtained through satellite telemetry. In: Kalb H, Wibbles T (eds) Proceedings of the nineteenth annual symposium on the Sea Turtle Biology and conservation. NOAA Tech Mem NMFS-SEFSC-443, pp 155–157Google Scholar
  23. Estrada M (1996) Primary production in the northwestern Mediterranean. Sci Mar 60(suppl. 2):55–64Google Scholar
  24. Godley BJ, Broderick AC, Glen F, Hays GC (2003) Post-nesting movements and submergence patterns of loggerhead marine turtles in the Mediterranean assessed by satellite tracking. J Exp Mar Biol Ecol 287:119–134CrossRefGoogle Scholar
  25. Gómez de Segura A, Tomás J, Pedraza SN, Crespo EA, Raga JA (2003) Preliminary patterns of distribution and abundance of loggerhead sea turtles, Caretta caretta, around the Columbretes Islands marine reserve, Spanish Mediterranean. Mar Biol 143:817–823CrossRefGoogle Scholar
  26. Gómez de Segura A, Tomás J, Pedraza SN, Crespo EA, Raga JA (2006) Abundance and distribution of the endangered loggerhead turtle in Spanish Mediterranean waters and the conservation implications. Anim Conserv 9:199–206CrossRefGoogle Scholar
  27. Hays GC, Marsh R (1997) Estimating the age of juvenile loggerhead sea turtles in the North Atlantic. Can J Zool 75:40–46CrossRefGoogle Scholar
  28. Hays GC, Äkesson B, Godley BJ, Luschi P, Santidrian P (2001) The implications of location accuracy for the interpretation of satellite-tracking data. Anim Behav 61:1035–1040CrossRefGoogle Scholar
  29. Hochscheid S, Bentivegna F, Speakman J (2003) The dual function of the lung in chelonian sea turtles: buoyancy control and oxygen storage. J Exp Mar Biol Ecol 297:123–140CrossRefGoogle Scholar
  30. Hochscheid S, Maffucci F, Bentivegna F, Wilson RP (2005) Gulps, wheezes, and sniffs: how measurement of beak movement in sea turtles can elucidate their behaviour and ecology. J Exp Mar Biol Ecol 316:45–53CrossRefGoogle Scholar
  31. Isern-Fontanet J, Font J, García-Ladona E, Emelianov M, Millot C, Taupier-Letage I (2004) Spatial structure of anticyclonic eddies in the Algerian basin (Mediterranean Sea) analyzed using the Okubo-Weiss parameter. Deep Sea Res II 51:3009–3028CrossRefGoogle Scholar
  32. Isern-Fontanet J, García-Ladona E, Font J (2006) The vortices of the Mediterranean sea: an altimetric perspective. J Phys Ocean 36:87–103CrossRefGoogle Scholar
  33. Ivlev VF (1961) Experimental ecology of the feeding of fishes. Yale University Press, New HavenGoogle Scholar
  34. Kareiva PM, Shigesada N (1983) Analysing insect movement as a correlated random walk. Oecol 56:234–238CrossRefGoogle Scholar
  35. Katsufumi S, Wataru S, Yoshimasa M, Hideji T, Shingo M, Yoshimasa N (1995) Body temperature independence of solar radiation in free-ranging loggerhead turtles, Caretta caretta, during internesting periods. Mar Biol 123:197–205CrossRefGoogle Scholar
  36. Luschi P, Hays GC, Del Seppia C, Marsh R, Papi F (1998) The navigational feats of green sea turtles migrating from Ascension Island investigated by satellite telemetry. Proc R Soc Lond Ser B Biol Sci 265:2279–2284CrossRefGoogle Scholar
  37. Luschi P, Hays G, Papi F (2003) A review of long-distance movements by marine turtles and the possible role of ocean currents. Oikos 103:293–302CrossRefGoogle Scholar
  38. Lutcavage ME, Lutz PL (1997) Diving physiology. In: Lutz PL, Musick JA (eds) The Biology of Sea Turtles. CRC Press, Boca Raton, pp 387–410Google Scholar
  39. Maffucci F, Kooistra WHCF, Bentivegna F (2006) Natal origin of loggerhead turtles, Caretta caretta, in the neritic habitat off the Italian coasts, central Mediterranean. Biol Conserv 127:183–189CrossRefGoogle Scholar
  40. Mayol J, Muntaner J, Aguilar R (1988) Incidencia de la pesca accidental sobre las tortugas marinas en el Mediterráneo español. Bull Soc Hist Nat Balears 32:19–31Google Scholar
  41. Milsom WK (1975) Development of buoyancy control in juvenile Atlantic loggerhead turtles, Caretta caretta. Copeia 1975:758–762CrossRefGoogle Scholar
  42. Millot C (1999) Circulation in the Western Mediterranean Sea. J Mar Syst 20:423–442CrossRefGoogle Scholar
  43. Millot C (2005) Circulation in the Mediterranean Sea: evidences, debates and answered questions. Sci Mar 69:5–21CrossRefGoogle Scholar
  44. Minamikawa S, Naito Y, Sato K, Matsuzawa Y, Bando T, Sakamoto W (2000) Maintenance of neutral buoyancy by depth selection in the loggerhead turtle Caretta caretta. J Exp Biol 203:2967–2975PubMedGoogle Scholar
  45. Morreale SJ, Meylan AB, Sadove SS, Standora EA (1992) Annual occurrence and winter mortality of marine turtles in New York waters. J Herpetol 26:301–308CrossRefGoogle Scholar
  46. Nival P, Gorsky G (2001) Conditions for blooming of pelagic species. In: Gelatinous zooplankton outbreaks: theory and practice. CIESM Workshop Series 14, Monaco, pp 23–27Google Scholar
  47. Obaton D, Millot C, Chabert D’Hières G, Taupier-Letage I (2000) The Algerian current comparisons between in situ and laboratory data sets. Deep Sea Res I 47:2159–2190CrossRefGoogle Scholar
  48. Pinot JM, Tinotre J, Gomis D (1994) Quasi-synoptic mesoscale variability in the Balearic Sea. Deep Sea Res I 41:897–914CrossRefGoogle Scholar
  49. Polovina JJ, Kobayashi DR, Parker DM, Seki JP, Balazs GH (2000) Turtles on the edge: movement of loggerhead turtles (Caretta caretta) along oceanic fronts, spanning longline fishing grounds in the central North Pacific, 1997–1998. Fish Oceanogr 9:71–82CrossRefGoogle Scholar
  50. Pritchard PC (1997) Evolution, phylogeny, and current status. In: Lutz PL, Musick JA (eds) The Biology of Sea Turtles. CRC Press, Boca Raton, pp 1–28Google Scholar
  51. Renaud ML, Carpenter A (1994) Movements and submergence patterns of loggerhead turtles (Caretta caretta) in the Gulf of Mexico determined through satellite telemetry. Bull Mar Sci 55:1–15Google Scholar
  52. Sakamoto W, Bando T, Arai N, Baba N (1997) Migration paths of the adult female and male loggerhead turtles Caretta caretta determined through satellite telemetry. Fish Sci 63:547–552CrossRefGoogle Scholar
  53. Smith WHF, Sandwell DT (1997) Global seafloor topography from satellite altimetry and ship depth soundings. Science 277:1957–1962Google Scholar
  54. Strauss RE (1979) Reliability estimates of Ivlev’s electivity index, the forage ratio, and a proposed linear index of food selection. Trans Amer Fish Soc 111:517–522CrossRefGoogle Scholar
  55. Tomás J, Fernández M, Raga JA (2003) Sea turtles in Spanish Mediterranean waters: surprises in 2001. Mar Turtle Newsl 101:1–3Google Scholar
  56. Turchin P (1991) Translating foraging movements in heterogeneous environments into the spatial distribution of foragers. Ecology 72:1252–1266CrossRefGoogle Scholar
  57. Witherington BE (2002) Ecology of neonate loggerhead turtles inhabiting lines of downwelling near the Gulf stream front. Mar Biol 140:843–853CrossRefGoogle Scholar
  58. Witzell WN, Cramer J (1995) Estimates of Sea Turtle Bycatch by the US pelagic longline fleet in the Western North Atlantic Ocean. NOAA Tech Mem NMFS-SEFSC-359, pp 14Google Scholar
  59. Wyneken J (1997) Sea turtle locomotion: mechanisms, behavior, and energetics. In: Lutz PL, Musick JA (eds) The Biology of Sea Turtles. CRC Press, Boca Raton, pp 165–198Google Scholar
  60. Zar JH (1984) Biostatistical analysis. Prentice-Hall, Englewood CliffsGoogle Scholar
  61. Zollner PA, Lima SL (1999) Search strategies for landscape-level interpach movements. Ecology 80:1019–1030CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • M. Revelles
    • 1
  • L. Cardona
    • 1
  • A. Aguilar
    • 1
  • M. San Félix
    • 2
  • G. Fernández
    • 3
  1. 1.Department of Animal Biology, Faculty of BiologyUniversity of BarcelonaBarcelonaSpain
  2. 2.Department of Zoology, Faculty of BiologyUniversity of ValenciaBurjasot, ValenciaSpain
  3. 3.Fundación AsproNaturaCalvià, MallorcaSpain

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