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Movements and diving behavior of internesting green turtles along Pacific Costa Rica

Integrative Zoology 2013年第3期8卷 293-306页

作者： Gabriela S.BLANCO Stephen J.MORREALE Jeffrey A.SEMINOFF Frank V.PALADINO rotney piedra James R.SPOTILA Department of Biology Drexel UniversityPhiladelphiaPennsylvaniaUSA Department of Natural Resources Cornell UniversityIthacaNew YorkUSA National Marine Fisheries Service Southwest Fisheries Science CenterLa JollaCaliforniaUSA Department of Biology Indiana University-Purdue UniversityFort WayneIndianaUSA Leatherback National Marine Park Ministry of EnvironmentEnergy and Telecommunications San JoseCosta Rica

Using satellite transmitters,we determined the internesting movements,spatial ecology and diving behavior of East Pacific green turtles(Chelonia mydas)nesting on Nombre de Jesús and Zapotillal beaches along the Pacific coast of northwestern Costa *** density analysis indicated that turtles spent most of their time in a particularly small area in the vicinity of the nesting beaches(50%utilization distribution was an area of 3 km^(2)).Minimum daily distance traveled during a 12 day internesting period was 4.6±3.5 *** were short and primarily occupied the upper 10 m of the water *** spent most of their time resting at the surface and conducting U-dives(ranging from 60 to 81%of the total tracking time involved in those activities).Turtles showed a strong diel pattern,U-dives mainly took place during the day and turtles spent a large amount of time resting at the surface at *** lack of long-distance movements demonstrated that this area was heavily utilized by turtles during the nesting season and,therefore,was a crucial location for conservation of this highly endangered green turtle *** unique behavior of these turtles in resting at the surface at night might make them particularly vulnerable to fishing activities near the nesting beaches.

关键词： Chelonia mydas Costa Rica East Pacific green turtle internesting period satellite telemetry

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