Tagging reveals limited exchange of immature loggerhead sea turtles (Caretta caretta) between regions in the western Mediterranean

Authors

  • Mónica Revelles Department of Animal Biology, Faculty of Biology, University of Barcelona
  • Juan Antonio Camiñas Instituto Español de Oceanografía (IEO), Centro Oceanográfico de Málaga
  • Luis Cardona Department of Animal Biology, Faculty of Biology, University of Barcelona
  • Mariluz Parga Marine Animal Rescue Center (CRAM)
  • Jesús Tomás Marine Zoology Unit, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia
  • Alex Aguilar Department of Animal Biology, Faculty of Biology, University of Barcelona
  • Ferran Alegre Marine Animal Rescue Center (CRAM)
  • Antonio Raga Marine Zoology Unit, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia
  • Albert Bertolero Laboratoire de Biogéographie et Ecologie des Vertébrés, EPHE University of Montpellier
  • Guy Oliver Réseau Tortues marines de Méditerranée française, Laboratoire de Biophysique et Dynamique des Systèmes intégrés, University of Perpignan

DOI:

https://doi.org/10.3989/scimar.2008.72n3511

Keywords:

biogeography, loggerhead sea turtle, capture-mark-recapture, flipper tags, dispersal, Mediterranean

Abstract


Exchange of immature loggerhead sea turtles (Caretta caretta) between the northern and southern regions of the western Mediterranean was investigated using data obtained from several Spanish tagging programmes. Tagged turtles ranged in straight carapace length from 23.0 to 74.0 cm. Thirty-six turtles were recaptured after an average interval of 390.5±462.6 days (SD). As the mean dispersal distance (MDD) of a turtle population that spreads over the western Mediterranean would stabilize after 117 days (CI 95%: 98 to 149), two analyses were conducted that included data from turtles recaptured after 98 and 149 days respectively. In both analyses, turtles were recaptured more often than expected in the same region where they had been tagged. No difference was found in either of the two regions between the average distance between the capture and recapture locations and the expected MDD if the turtles were to remain in the region where they were first captured. Turtles recaptured after 15 and 25 days respectively were excluded from the analysis to ensure data independence. The overall evidence indicates that immature turtles exhibit strong site fidelity to certain areas and that there is a strong barrier to dispersal between the northern and southern parts of the western Mediterranean. Therefore, loggerhead turtles in the western Mediterranean should be split into at least two management units.

Downloads

Download data is not yet available.

References

Avens, L., J. Braun-McNeill, S. Epperly and K.J. Lohmann. – 2003. Site fidelity and homing behavior in juvenile loggerhead sea turtles (Caretta caretta). Mar. Biol., 143: 211-220. doi:10.1007/s00227-003-1085-9

Balazs, G.H. – 2000. Factores a considerar en el marcado de tortugas marinas. In: K.L. Eckert, K.A. Bjorndal, F.A. Abreu-Grobois and M. Donnelly (eds.). Técnicas de investigación y manejo para la conservación de las tortugas marinas, pp. 116-125. Specialist Group on Sea Turttles IUCN/CSE Pub. No 4.

Bentivegna, F. – 2002. Intra-mediterranean migration of loggerhead sea turtles monitored by satellite telemetry. Mar. Biol., 141: 795-800. doi:10.1007/s00227-002-0856-z

Bertolero, A. – 2003. Varamientos y capturas de tortugas marinas en los alrededores del Delta del Ebro (NE España) entre los años 1984 y 2001. Rev. Esp. Herp., 17: 39-54.

Bolten, A.B. – 2003. Active swimmers-passive drifters: the oceanic juvenile stage of loggerheads in the Atlantic system. In: A.B. Bolten and B.E. Witherington (eds.), Loggerhead Sea Turtles, pp. 63-78. Smithsonian Institution Press, Washington, D.C.

Bovet, P. and S. Benhamou. – 1988. Spatial analysis of animals’ movements using a correlated random walk model. J. Theor. Biol., 131: 419-433. doi:10.1016/S0022-5193(88)80038-9

Broderick, A.C., M.S. Coyne, W.J. Fuller, F. Glen and B.J. Godley. – 2007. Fidelity and over-wintering of sea turtles. Proc. R. Soc. B, 274: 1533-1538. doi:10.1098/rspb.2007.0211 PMCid:2176160

Camiñas, J.A. – 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. Herp., 11: 91-98.

Camiñas, J.A. – 2005. Biología y comportamiento migratorio de la tortuga boba (Caretta caretta Linnaeus,1758) en el Mediterráneo occidental. Ph.D. thesis, Univ. Complutense de Madrid.

Cardona, L., M. Revelles, C. Carreras, M. San Félix, M. Gazo and A. Aguilar. – 2005. Western Mediterranean immature loggerhead turtles: habitat use in spring and summer assessed through satellite tracking and aerial surveys. Mar. Biol., 147: 583-591. doi:10.1007/s00227-005-1578-9

Carreras, C., S. Pont, F. Maffucci, M. Pascual, A. Barceló, F. Bentivegna, L. Cardona, F. Alegre, M. SanFélix, G. Fernández and A. Aguilar. – 2006. Genetic structuring of immature loggerhead sea turtles (Caretta caretta) in the Mediterranean Sea reflects water circulation patterns. Mar. Biol., 149: 1269-1279. doi:10.1007/s00227-006-0282-8

Carreras, C., M. Pascual, L. Cardona., A. Aguilar, D. Margaritoulis, A. Rees, O. Turkozan, Y. Levy, A. Gasith, M. Aureggi and M. Khalil. – 2007. The genetic structure of the loggerhead sea turtle (Caretta caretta) in the Mediterranean Sea revealed by nuclear and mitochondrial DNA and its conservation implications. Cons. Genet., 8: 761-775. doi:10.1007/s10592-006-9224-8

Casale, P., D. Freggi, R. Basso, C. Vallini and R. Argano. – 2007. A model of area fidelity, nomadism, and distribution patterns of loggerhead sea turtles (Caretta caretta) in the Mediterranean Sea. Mar. Biol., 152: 1039-1049. doi:10.1007/s00227-007-0752-7

Dixon, P.M. – 2001. The bootstrap and the jackknife: describing and precision of ecological indices. In: S.M. Schneider and J. Gurevitch, (eds.). Design and analysis of ecological experiments, pp. 267-307. Oxford University Press, New York, NY.

Dodd, C.K. Jr. – 1988. Synopsis of the biological data on the loggerhead sea turtle Caretta caretta (Linnaeus 1758). U.S. Fish. Wildl. Serv., Biol. Rep. 88(14).

Godley, B.J., E.H.S.M. Lima, S. Åkesson, A.C. Broderick, F. Glen, M.H. Godfrey, P. Luschi and G.C. Hays. – 2003. Movement patterns of green turtles in Brazilian coastal waters described by satellite tracking and flipper tagging. Mar. Ecol. Prog. Ser., 253: 279-288. doi:10.3354/meps253279

Gómez de Segura, A., J. Tomás, S.N. Pedraza, E.A. Crespo and J.A. Raga. – 2006. Abundance and distribution of the endangered loggerhead turtle in Spanish Mediterranean waters and the conservation implications. Anim. Conserv., 9: 199–206. doi:10.1111/j.1469-1795.2005.00014.x

Laurent, L., P. Casale, M.N. Bradai, B.J. Godley, G. Gerosa, A.C. Broderick, W. Schroth, B. Schierwater, A.M. Levy, D. Freggi, E.M. Abd El-Mawla, D.A. Hadoud, H.E. Gomati, M. Domingo, M. Hadjichristophorous, L. Kornaraki, F. Demirayak and Ch. Gautier. – 1998. Molecular resolution of marine turtle stock composition in fishery bycatch: a case study in the Mediterranean. Mol. Ecol., 7: 1529-1542. doi:10.1046/j.1365-294x.1998.00471.x PMid:9819906

Luschi, P., G.C. Hays and F. Papi. – 2003. A review of long-distance movements by marine turtles and the possible role of ocean currents. Oikos, 103: 293-302. doi:10.1034/j.1600-0706.2003.12123.x

Margaritoulis, D., R. Argano, I. Baran, F. Bentivegna, M.N. Bradai, J.A. Camiñas, P. Casales, G. De Metrio, A. Demetropoulos, G. Gerosa, B.J. Godley, D.A. Haddoud, J. Houghton, L. Laurent and B. Lazar. – 2003. Loggerhead Turtles in the Mediterranean Sea: Present Knowledge and Conservation Perspectives. In: A.B. Bolten and B.E. Witherington (eds.), Loggerhead Sea Turtles, pp. 175-198. Smithsonian Books, Washington, D.C.

Millot, C. – 1999. Circulation in the Western Mediterranean Sea. J. Mar. Sist., 20: 423-442. doi:10.1016/S0924-7963(98)00078-5

Pinot, J.-M., J.L. López-Jurado and M. Riera. – 2002. The CANALES experiment. Interanual, seasonal, and mesoscale variability of the circulation in the Balearic Channels. Prog. Oceanogr., 55: 335-370. doi:10.1016/S0079-6611(02)00139-8

Revelles, M., C. Carreras, L. Cardona, A. Marco, F. Bentivegna, J.J. Castillo, G. de Martino, J.L. Mons, M.B. Smith, C. Rico, M. Pascual and A. Aguilar. – 2007a. Evidence for an asymmetrical size exchange of loggerhead sea turtles between the Mediterranean and the Atlantic through the Straits of Gibraltar. J. Exp. Mar. Biol. Ecol., 349: 261-271. doi:10.1016/j.jembe.2007.05.018

Revelles, M., L. Cardona, A. Aguilar, M. San Félix and G. Fernández. – 2007b. Habitat use by immature loggerhead sea turtles in the Algerian Basin (western Mediterranean): swimming behaviour, seasonality and dispersal pattern. Mar. Biol., 151: 1501-1515. doi:10.1007/s00227-006-0602-z

Roca, V. and J.A. Camiñas. – 2000. Informes sobre la campaña de marcado de tortugas marina en España. Período 1990-1998. Ecología, 14: 331-334.

Tomás, J., A. Dominici, S. Nannarelli, L. Forni and F.J. Badillo. – 2001. From Hook to Hook: The Odyssey of a Loggerhead Sea Turtle in the Mediterranean. Mar. Turtle Newsl., 92: 13-14.

Zar, J.H. – 1984. Biostatistical analysis. Prentice-Hall, Englewood Cliffs.

Downloads

Published

2008-09-30

How to Cite

1.
Revelles M, Camiñas JA, Cardona L, Parga M, Tomás J, Aguilar A, Alegre F, Raga A, Bertolero A, Oliver G. Tagging reveals limited exchange of immature loggerhead sea turtles (Caretta caretta) between regions in the western Mediterranean. scimar [Internet]. 2008Sep.30 [cited 2022Oct.3];72(3):511-8. Available from: https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1008

Issue

Section

Articles

Most read articles by the same author(s)

1 2 > >>