Navegando por Assunto "Dermochelys coriacea"
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- ANALISE PARASITOLÓGICA DE Dermochelys coriacea Linnaeus 1766 NO ATLÂNTICO SUL OCIDENTAL(2007) WERNECK, M. R.; VERISSIMO, L.F.; BALDASSIN, P.; GAGLIARDI, F.; TADASHI, E.; WANDERLINDE, J.; BAPTISTOTTE, C.; MELO, M. T. D.; LIMA, E H.S.M.; GALLO, B. G.; SILVA, R. JA Dermochelys coriacea Linnaeus 1766, popularmente conhecida no Brasil e Uruguai como “Tartaruga de couro” e “Tortuga Siete Quillas” respectivamente, é a maior espécie de tartaruga marinha existente. Encontra se seriamente ameaçada de extinção e foi classificada como criticamente em perigo pela IUCN. AA Dermochelys coriacea Linnaeus 1766, popularmente conhecida no Brasil e Uruguai como “Tartaruga de couro” e “Tortuga Siete Quillas” respectivamente, é a maior espécie de tartaruga marinha existente. Encontra se seriamente ameaçada de extinção e foi classificada como criticamente em perigo pela IUCN. A
Item Análise parasitológica de Dermochelys coriacea Linnaeus 1766 no Atlântico Sul Ocidental.(2007) WERNECK, M. R; VERISSIMO, L. F; BALDASSIN, P; GAGLIARDI, F; TADASHI, E; WANDERLINDE, J; BAPTISTOTTE, C; MELO, M. T. D; LIMA, E. H. S. M; GALLO, B; SILVA, R. JItem Avaliação do Estado de Conservação da Tartaruga Marinha Dermochelys coriacea (Vandelli, 1761) no Brasil.(2011-01-27) ALMEIDA, A.de P; THOMÉ, J. C. A; BAPTISTOTTE, C; MARCOVALDI, M. Â.; SANTOS, A. S. dos; LOPEZ, Milagros- Avaliação do Estado de Conservação da Tartaruga Marinha Dermochelys coriacea (Vandelli, 1761) no Brasil.(2011-04-02) ALMEIDA, A.de P.; THOMÉ, J. C. A.; BAPTISTOTTE, C.; MARCOVALDI, M. Â.; SANTOS, A. S. dos; LOPEZ, Milagros.
Item Diversidade genética e origem de tartarugas de couro (Dermochelys coriacea) encontradas na costa brasileira(2007) VARGAS, S.M; ARAUJO, F. C; MONTEIRO, D; ESTIMA, S. C; THOME, J. C. A; SOARES, L. S; SANTOS, F. R- 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.
Item Revisiting the genetic diversity and population structure of the critically endangered leatherback turtles in the South-west Atlantic Ocean: insights for species conservation(Journal of the Marine Biological Association of the United Kingdom, 2017) Vargas, Sarah m.; Lins, Luana S. F.; Mmolfetti, Erica; Ho, Simon Y. W.; Monteiro, Danielle; Barreto, Jonathan; Colman, Liliana; Vila-verde, Lucas; Baptistotte, Cecilia; Thome, Joao Carlos Alciati; Santos, Fabricio R.The worldwide population of the leatherback turtle (Dermochelys coriacea) encompasses seven subpopulations among the Pacific, Atlantic and Indian Oceans. It has experienced declines across parts of its distribution, with the subpopulation of the South-west Atlantic listed as critically endangered by the IUCN Red List. The main threats to this subpopulation include its interaction with fisheries, coastal development, pollution and climate change. In this study, we sequenced mitochon drial DNA from 52 leatherback turtles in Brazil and combined these with published data from other Atlantic Ocean rookeries. The haplotype diversities of the Atlantic population rookeries ranged from 0.112 to 0.533 and are not directly proportional to current rookery sizes. The Brazilian rookery, despite recording low nest numbers per year, had the second-highest haplotype diversity among all Atlantic rookeries (h ¼ 0.532). A mixed-stock analysis revealed that the South American pelagic aggregate is primarily composed of individuals from West Africa (84%), with contributions from the North Atlantic rookeries (14%). Leatherback turtles appear to have a complex phylogeographic pattern, showing evidence of multiple colonization events and a lack of isolation by distance. Our novel dataset, based on DNA sequences of 695 base pairs, will provide baseline data needed to understand population dynamics in the region, building comprehensive population assessments to support and develop management strategies. Having both the only known regular rookery in the South-west Atlantic, and a mixed-origin foraging area for the species along its coast, Brazil has a key role in the conservation of the leatherback turtle.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.Item Satellite-tracked Movements of Female Dermochelys coriacea From Southeastern Brazil(Endangered Species Research, 2011-10-21) ALMEIDA, A. P; ECKERT, S. A; BRUNO, S. C; SCALFONI, J. T; Giffoni, B; LÓPEZ-MENDILAHARSU, M.; THOMÉ, J. C. AFour 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.- Sattelite-Tracked movements of leatherbeck sea turtles Dermochelys coriacea, from Southeastern Brazil.(2009) ALMEIDA, A.P; ECKERT, S.A; BRUNO, S.C; SCALFONI, J.T; GIFFONI, B; THOMÉ, J.C.AComprehension on the habitat use during migratory movements can help to understand the differences in the conservation status of different populations, and to drive the needed conservation efforts. In Southwestern Atlantic, however, information regarding habitat use and migratory movements is restricted to few tag recoveries. This first satellite telemetry study of leatherbacks nesting in Brazilian grounds aimed to understand the intertnesting and post nesting movements of females tracked from an endangered and severely depleted rookery.
Item What can we learn from sea turtle strandings?(2016) GOLDBERG, D.W.; PIRES, T.; VELLOSO, R.; BECKER, H.; CASTILHOS, J.C.; WANDERLINDE, J.; LOPEZ, G.G.; MELO, M.T.D.; SANTOS, A.B.; BAPTISTOTTE, C.Stranding datasets may provide important information on sea turtle health, age, size composition, diet, reproductive status, population trends and cause-specific mortality. Additionally, they are also used to infer geographic distribution and abundance or even trends in mortality risk, attributable to anthropogenic threats such as coastal fisheries and pollution. Five species of sea turtle were recorded in 5260 strandings from January 2014 to September 2015, along the Brazilian coast, of which 3903 were Chelonia mydas, 914 were Lepidochelys olivacea, 290 were Caretta caretta, 83 were Eretmochelys imbricata, 4 were Dermochelys coriacea and 66 could not be identified.