Livros e Publicações
URI permanente para esta coleçãohttps://bdc.icmbio.gov.br/handle/cecav/1487
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Resultados da Pesquisa
- Detection and characterization of fibropapilloma-associated turtle herpesvirus in marine turtles for Brazil.(2009-11) RODENBUSCH, C.R; ALMEIDA, L.L; MARKS, F.S; BAPTISTOTTE, C; PIRES, T.T; WERNECK, M.R; DAMASCENO, T; ALIEVI, M.M; CANAL, C.N
- Nesting Biology and conservation of the leatherback sea turtle (Dermochelys coriacea) in Espírito Santo State, Brazil, 1988-1989 to 2003-2004.(Chelonian Conservation and Biology, 2007-05-01) THOMÉ, J. C. A; BAPTISTOTTE, C; MOREIRA, L. M. P; SCALFONI, J. T; ALMEIDA, A. P; RIETH, D. B; BARATA, P. C. RIn Brazil, the only area where regular leatherback sea turtle (Dermochelys coriacea) nesting is known to occur is located on the northern coast of the state of Espı´rito Santo, around latitude 198S. In this study, we present the field methods used by Projeto TAMAR-IBAMA (the Brazilian Sea Turtle Conservation Program) in the state of Espı´rito Santo and analyze data on leatherback nesting from 1988–1989 to 2003–2004. In that period, 527 nests were observed in the study area. The annual number of nests varied between 6 (in 1993–1994) and 92 (in 2002–2003). Between 1995–1996 and 2003–2004, the annual number of nests increased at about 20.4% per year on average. Among the 527 clutches observed, 358 (67.9%) were left in situ, 50 (9.5%) were relocated to another spot on the beach, 88 (16.7%) were relocated to open-air beach hatcheries, and 31 clutches (5.9%) did not have their management decision recorded. Curved carapace length of nesting females was in the range of 139–182 cm (mean ¼ 159.8 cm). At present, there is no significant alteration of the nesting habitat in Espı´rito Santo, egg poaching has been reduced to very low levels, and there is no subsistence hunting for sea turtles of any species. The main challenges to leatherback conservation currently are the incidental capture in artisanal fisheries operating close to nesting beaches and in high seas fisheries operating in the South Atlantic, as well as activities related to the oil industry. An overview of Projeto TAMAR’s actions addressing current sea turtle conservation issues in the State of Espı´rito Santo is presented.
- Sea turtle feeding grounds of Brazil.(1998) MARCOVALDI, M. Â; SILVA, A. C. C. D. da; GALLO, B. M. G; BAPTISTOTTE, C; VIEITAS, C. F; BELLINI, C; LIA, E. H. S. M; CASTILHOS, J. C. de; THOMÉ, J. C. A; SANCHES, T. M
- Educational campaign to reduce the impact of artificial light on sea turtle nesting beaches in Brazil.(2000) MARCOVALDI, M. Â; BELLINI, C; CASTILHOS, J. C de; SILVA, A. C. C. D. da; GALLO, B. M. G; BAPTISTOTTE, C.; LIMA, E. H. S. M; LIMA, E. P; SANCHES, T. M; THOMÉ, J; PATIRI, V. J. ASeveral important stages of reproduction by sea turtles normally take place at night, under the cover of darkness on beaches. Artificial lights on or near beaches often reduce the number of female sea turtles that emerge from the ocean to nest (Witherington, 1992; Ehrhart et al. 1996). When females do lay their eggs on beaches that are subject to artificial lighting, seafinding of the resultant hatchling turtles is often disrupted and they often go away from the sea (e.g. Philibosian, 1976; Peters and Verhoeven, 1994). Misoriented hatchlings face increased mortality from land predators, accidental trampling by people or vehicles, or desiccation following sunrise. Development of coastal areas, in the form of homes, hotels, industrial complexes, and recreational areas, leads to an increase of nighttime lighting. Unchecked lighting on beaches used by sea turtles can have serious impacts on nesting populations, and as such management of lighting on or near beaches is a priority for most sea turtle conservation programs.
- Reproductive biology and conservation status of the loggerhead sea turtle (Caretta caretta) in Espirito Santo State, Brazil.(2000) BAPTISTOTTE, C; THOMÉ, J. C. A; BJORNDAL, KThe reproductive biology of loggerheads nesting in Espírito Santo, Brazil, is evaluated for six nesting seasons (1991/1992 through 1996/1997), through data gathered by Projeto TAMAR-IBAMA, the Brazilian sea turtle conservation program. Mean curved carapace length of nesting females was 102.7 cm (n=198). Mean clutch size for clutches with more than 50 eggs was 119.7 (n=3664), and clutch size was significantly correlated with female body size. Management practices had significant effects on hatching success and incubation time. Mean hatching success of nests left in situ was 68.3% (n=879), of undepredated nests left in situ was 79.9% (n=751), and of nests moved to hatcheries and not depredated was 67.7% (n=2786). For nests moved to hatcheries, hatching success declined significantly with increasing time interval between oviposition and transfer to the hatchery. Mean incubation time was 59.5 days for nests left in situ (n=572) and 57.2 days for nests moved to hatcheries (n=2179). Incubation time declined significantly throughout the nesting season as temperatures increased; we conclude that sex ratio of hatchlings also shifts to more females as the season progresses. There was significant annual variation for all parameters. A short review of the conservation status of loggerheads in Espírito Santo State is also presented.
Item Hawksbill turtles in Brazil(2006-04) MARCOVALDI, M. A; THOMÉ, J. C; LOPEZ, G. G; SOARES, L. S