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Assessing tag loss and survival probabilities in green turtles (Chelonia mydas) nesting in Malaysia

  • Hideaki Nishizawa (a1), Juanita Joseph (a2), Vicki Yii-Ching Chew (a2), Hock-Chark Liew (a2) and Eng-Heng Chan (a3)...
Abstract

The loss of external tags is one of the biggest problems in mark-recapture research. An evaluation of tag loss is therefore required to improve tagging methodology, select appropriate tag types, and accurately estimate population status and dynamics. We estimated tag loss probability of double-tagged green turtles (Chelonia mydas) nesting at Redang Island, Malaysia (05°49′ N 103°00′ E), from 1993–2014. For both titanium and Inconel tags, we found a tag loss pattern with a high initial tag loss rate that decreased to an asymptote near a constant value above zero. The initial tag loss probability for titanium tags was higher than for Inconel tags, and titanium tags were lost earlier than Inconel tags in more individuals when both types of tags were attached. In addition, comparison of the tag loss probability of Inconel tags attached during the period when tagging staff changed every year to that when senior tagging staff were not changed, indicated that lack of consistency in tagging staff affected the application of at least one of two Inconel tags. Estimated tag loss probability was incorporated into a recapture model, and annual survival probability was estimated to be 0.893 (95% confidence interval: 0.857–0.921).

Copyright
Corresponding author
Correspondence should be addressed to: J. Joseph, Institute of Oceanography and Environment, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia. email: juanita@umt.edu.my
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C. Brownie , J.E. Hines , J.D. Nichols , K.H. Pollock and J.B. Hestbeck (1993) Capture-recapture studies for multiple strata including non-Markovian transitions. Biometrics 49, 11731187.

H. Hatase , Y. Matsuzawa , K. Sato , T. Bando and K. Goto (2004) Remigration and growth of loggerhead turtles (Caretta caretta) nesting on Senri Beach in Minabe, Japan: life-history polymorphism in a sea turtle population. Marine Biology 144, 807811.

J.R. Hendrickson (1958) The green sea turtle, Chelonia mydas (Linn.) in Malaya and Sarawak. Proceeding of the Zoological Society of London 130, 455535.

M. Kéry and M. Schaub (2012) Bayesian population analysis using WinBUGS: a hierarchical perspective. Waltham, MA: Academic Press.

W.C. Oosthuizen , P.J.N. De Bruyn and M.N. Bester (2010) Cohort and tag-site-specific tag-loss rates in mark-recapture studies: a southern elephant seal cautionary case. Marine Mammal Science 26, 350369.

C.J. Parmenter (1993) A preliminary evaluation of the performance of passive integrated transponders and metal tags in a population study of the flatback sea turtle (Natator depressus). Wildlife Research 20, 375381.

N. Pilcher (2010) Population structure and growth of immature green turtles at Mantanani, Sabah, Malaysia. Journal of Herpetology 44, 168171.

T.C. Read , L. Wantiez , J.M. Werry , R. Farman , G. Petro and C.J. Limpus (2014) Migrations of green turtles (Chelonia mydas) between nesting and foraging grounds across the Coral Sea. PLoS ONE 9, e100083.

K.L. Stokes , W.J. Fuller , F. Glen , B.J. Godley , D.J. Hodgson , K.A. Rhodes , R.T.E. Snape and A.C. Broderick (2014) Detecting green shoots of recovery: the importance of long-term individual-based monitoring of marine turtles. Animal Conservation 17, 593602.

E. Tanaka (2009) Estimation of temporal changes in the growth of green turtles Chelonia mydas in waters around the Ogasawara Islands. Fisheries Science 75, 629639.

S. Troëng and M. Chaloupka (2007) Variation in adult annual survival probability and remigration intervals of sea turtles. Marine Biology 151, 17211730.

G.C. White and K.P. Burnham (1999) Program MARK: survival estimation from populations of marked animals. Bird Study 46, S120S139.

T. Yasuda , H. Tanaka , K. Kittiwattanawong , H. Mitamura , W. Klom-in and N. Arai (2006) Do female green turtles (Chelonia mydas) exhibit reproductive seasonality in a year-round nesting rookery? Journal of Zoology, London 269, 451457.

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Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
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