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Recoveries of Atlantic green turtles tagged at the Ascension Island nesting ground confirm an exclusively Brazilian origin for the island colony and show its renesting and remigration periodicity and its site tenacity to be similar to those of the more extensively sampled Tortuguero (Costa Rica) colony. Implications of the dual origin of the Brazilian resident colony, where Ascension Island turtles mix with turtles from a Surinam breeding ground, are discussed; and the probable composite nature of Chelonia mydas, for which Ascension Island is the type locality is pointed out.
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Archie Carr (1975) studied this question.
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