Navegando por Autor "SCALFONI, J. T."
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- Novos índices de longevidade reprodutiva para a careba-amarela (Caretta caretta) no litoral do Espírito Santo, Brasil.(2005) THOMÉ, J. C; BAPTISTOTTE, C.; MOREIRA, L. M. P; SCALFONI, J. T.; ALMEIDA, A. P. E; RIETH, D
Item Records of the leatherback sea turtle (Dermochelys coriacea) on the Brazilian coast, 1969-2001(2004) BARATA, P. C. R.; LIMA, E. H. S. M.; BORGES-MARTINS, M.; SCALFONI, J. T.; BELLINI, C.; SICILIANO, S.Data from several sources and original data are presented regarding sightings, strandings and incidental captures of leatherback sea turtles (Dermochelys coriacea) on the Brazilian coast in a 33 year period, from 1969 to 2001. Two of the turtles were small juveniles (curved carapace length¼40 cm and approximately 85 cm) and the remaining animals with known carapace size were large juveniles or adults. The origin of leatherbacks observed in Brazil is unknown. Several colonies in South America, including a Brazilian one, in the Caribbean, in western Africa and even in eastern South Africa could be the source of these turtles. The data presented here suggest that more e¡ort should be directed to the assessment of the impact of ¢shing gear and marine pollution on leatherbacks and that systematic surveys on beaches should be maintained in order to monitor long term £uctuations in stranding levels and spatial stranding patterns. Genetic studies and satellite telemetry would be helpful in clarifying the origin of leatherbacks stranded or incidentally captured on the Brazilian coast.Item Satellite-tracked movements of female Dermochelys coriacea from southeastern Brazil(2011-10-21) ALMEIDA, A. P.; ECKERT, S. A.; BRUNO, S. C.; SCALFONI, J. T.; Giffoni, B.; LÓPEZ-MENDILAHARSU, M.; THOMÉ, J. C. A.Four female leatherback sea turtles Dermochelys coriacea were satellite tracked from the southeastern coast of Brazil (3 from nesting beaches in the state of Espírito Santo, and 1 recovered from a driftnet off the coast of the state of São Paulo), representing the first study of movements of leatherbacks nesting on Brazilian grounds. The results suggest that during the internesting period, leatherbacks may disperse up to 160 km from the nesting beach using an area of 4400 km2. Tracking also revealed shared feeding areas in southern South America, comprising Brazilian, Uruguayan, and Argentinean waters, and highlighted important interactions with fish eries along nesting, migratory, and feeding habitats. The presence in migratory/foraging areas of turtles from at least 2 different nesting populations from both sides of the South Atlantic Ocean supports the concept that management efforts for this species must incorporate a broad regional perspective.