Navegando por Autor "Baptistotte, C."
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Item Abundance, size and overall body conditions of juvenile green turtles (chelonia mydas) in the effluent discharge channel of Tubarão Steel Company, Espírito Santo, Brazil.(Projeto Tamar-IBAMA – Vitória – ES, 2005) Baptistotte, C.; Torezani, E.; Coelho, B. B.Juvenile and adult green sea turtles (Chelonia mydas) are found in feeding areas along most of the Brazilian coast. However, information about this species on Brazil coast is scanty. The study is located in the effluent discharge channel of the Tubarão Steel Company, where there are a significant number of green sea turtles with and without fibropapillomatosis that utilize the place for feeding and growth.Item Anthropogenic threats to the sea turtle populations along the brazilian coast(2011-05) Baptistotte, C.; Lopez, G.; Reith, Denise; Santos, M. R. D.; Boldrin, M. A.; Werneck, M. R.; Becker, H.; Goldberg, D. W.; Stahelin, G. D.; Marcovaldi, M. A.; Píres, T.Post mortem examination is an important tool in sea turtle diseases investigation and its relation to anthropogenic stressors. In order to identify the possible causes of sea turtles strandings, Projeto TAMAR-ICMBio conducts necropsies at its research stations along the brazilian coast. Moreover, TAMAR has developed research agreements through veterinary universities research programs to allow more accurate diagnostics. In this study, we analyze results from 989 necropsies performed at TAMAR Stations in Bahia, Espírito Santo, São Paulo and Santa Catarina States (Figure 1), from January 2009 to May 2011.Item Application of flow cytometry and gas chromatography to study fibropapillomatosis in Chelony mydas (Testudines, Cheloniidae) in Brazil and their contributions for conservation of their species(2012) Rossi, S.; Sarmiento, A. M. S; Vale, L. A. S.; Genoy-Puerto, E. Alexander; Prioste, F. E. S.; Gattamorta, M. A.; Kinoshita, D.; Hazarbassanov, N. G. T. Q.; Becker, H.; Lima, E.; Baptistotte, C.; Goldberg, D. W.; Santos, A. J. B.; Bortolon, L. F.; Matushima, E. R.Item Coastal habitat degradation and green sea turtle diets in Southeastern Brazil(2011-06) Santos, R. G.; Martins, A. S; Farias, J. N; Horta, P. A.; Pinheiro, H. T.; Torezani, E.; Baptistotte, C.; Seminoff, J. A.; Balazs, G. H.; Work, T. M.To show the influence of coastal habitat degradation on the availability of food for green turtles (Chelonia mydas), we assessed the dietary preferences and macroalgae community at a feeding area in a highly urbanized region. The area showed low species richness and was classified as degraded. We examined stomach contents of 15 dead stranded turtles (CCL = 44.0 cm (SD 6.7 cm)). The diet was composed primarily of green algae Ulva spp. (83.6%). In contrast, the macroalgae community was dominated by the green alga Caulerpa mexicana. We found a selection for red algae, seagrass and Ulva spp., and avoidance for C. mexicana and brown alga Dictyopteris delicatula. The low diversity of available food items, possibly a result of environmental degradation, likely contributed to the low dietary diversity. The nutritional implications of this restricted diet are unclear.- Comparison between corporal subjetive classification and body condition index (BCI) for Chelonia mydas (Testudines, Cheloniidae) caught in Brazilian coast(2012) Sánchez-Sarmiento, A. M.; Rossi, S.; Vanstreels, R. E. T.; Santos, R. G.; Marigo, J.; Bertozzi, C. P.; Baptistotte, C.; Becker, J. H.; Matushima, E. R.Chelonia mydas, green sea turtle, is an endangered species by the IUCN (2012) and a vulnerable species in Brazil. The threats are catch, habitat degradation (including pollution) and diseases. The fibropapillomatosis (FP) is one of the greatest threats against the survival of C. mydas due to the multifactorial causes and impact all over the world. Biometric data (Curved Carapace Length-CCL, Curved Carapace Width CCW and Body Mass-BM) of green sea turtles from Ubatuba-SP, Praia Grande-SP and Vitória-ES were recorded. Straight Carapace Length (SCL) was calculated from CCL and was used to obtain the Body Condition Index (BCI = BM / SCL3). BCI was tested versus subjective body condition (poor, fair and good), which evaluates the general aspect and concavity of plastron. The results demonstrated that the subjective classification is reliable for animals with poor condition; nevertheless, this classification is not clear for turtles estimated as fair and good. On the other hand, the objective classification (BCI) was an appropriate indicator for body condition. BCI of specimens caught by fishing net (1.54 ± 0.03) was higher than green sea turtles from rehabilitation (1.30 ± 0.08) or those found stranded or floating (1.23 ± 0.05). BCI was higher in females (1.45 ± 0.03) than males (1.28 ± 0.06). Further studies will attempt to correlate BCI with presence and intensity of FP and levels of organochlorine pollutants in tissues samples from C. mydas caught in other areas of Brazilian coast, aiming to clarify the role and impact of FP for green sea turtles conservation.
- Distribución anatómica de fibropapilomas en tortugas verdes, Chelonia mydas (Testudines, Cheloniidae), capturadas en la costa brasilera(2012) Sánchez-Sarmiento, A. M.; Rossi, S.; Vanstreels, R. E. T.; Santos, R. G.; Baptistotte, C.; Becker, J. H.; Lima, E. H. S. M.; Matushima, E. R.Las tortugas marinas se encuentran mundial y regionalmente amenazadas de extinción. La tortuga verde, Chelonia mydas, está clasificada como “Amenazada” por la Unión Internacional para la Conservación de la Naturaleza y es listada como vulnerable de extinción por el Instituto Brasilero de Medio Ambiente y de los Recursos Naturales Renovables. Las amenazas para la especie incluyen captura por pesca, degradación del hábitat en las áreas de alimentación y anidación, polución marina y enfermedades. Una de las principales amenazas para la conservación de esta especie es la fibropapilomatosis, Green turtle fibropapilloma disease, una enfermedad tumoral que se destaca por su carácter multifactorial, amplia distribución e impacto. Se caracterizaron los fibropapilomas de 88 individuos provenientes de Almofala-CE (n=4), Ubatuba-SP (n=61) y Vitória-ES (n=23). En total, 3035 fibropapilomas (34,49 ± 27,69), de 1 a 129 por tortuga, fueron clasificados por categorías de tamaño: (1) < 1 cm (42,9% de los tumores), (2) 1 ≤ tumor < 4 cm (50,71%), (3) 4 ≤ tumor < 10 cm (6,06%), (4) ≥ 10 cm (0,33%). Se constató que los tumores se distribuyen en mayor cantidad en las aletas anteriores y posteriores (incluyendo en ambas piel adyacente) con un 44,18% y 29,16% respectivamente, región cervical (11,63%), plastrón (5,01%), ojos (4,15%), región inguinal y cola (3,23%), caparazón (1,75%) y escamas córneas de la cabeza (0,89%). Futuramente, los resultados serán correlacionados al histórico individual y concentraciones de compuestos organoclorados, estableciendo nuevas conductas para el análisis de la gravedad de esta enfermedad en tortugas verdes provenientes de la costa brasilera.
Item Fibropapillomatosis in green turtles Chelonia mydas in Brazil(2011) Rodenbusch, C. R.; Baptistotte, C.; Werneck, M. R.; Pires, T. T.; Melo, M. T. D.; Ataíde, M. W. de; Reis, K. D. H. L.; Testa, P.; Alieve, M. M.; Canal, C. W.- OCCURRENCE, GROWTH AND OVERALL BODY CONDITION OF JUVENILE GREEN TURTLES (CHELONIA MYDAS) IN THE EFFLUENT DISCHARGE CHANNEL OF COMPANHIA SIDERÚRGICA DE TUBARÃO (TUBARÃO STEEL COMPANY), VITÓRIA, STATE OF ESPÍRITO SANTO, BRAZIL, 2000-2002(2003) Baptistotte, C.; Torezani, E.; Agrizzi, E. J.; Coelho, B. B.; Ferreira, L. S.; Gomes, M. G. T.; Barata, P. C. R.Juvenile and adult green sea turtles (Chelonia mydas) are found in feeding areas along most of the Brazilian coast. However, there is scant information about this species in the State of Espírito Santo. This study was undertaken by Projeto TAMAR, the Brazilian sea turtle conservation program, in partnership with Companhia Siderúrgica de Tubarão (CST, Tubarão Steel Company), after a significant number of green turtles were found to inhabit the effluent discharge channel of the steel plant. The objective was to analyze, through mark and recapture, movement patterns and growth rates, and also to assess the overall body condition of the turtles in that area.
Item Reabilitação de Tartarugas marinhas atendidas pela base de Ubatuba-SP do Projeto TAMAR- IBAMA avaliação dos 100 primeiros casos.(Projeto Tamar-IBAMA – Itaguá – Ubatuba – SP, 2004) Baptistotte, C.; Werneck, M. R.; Gallo, B.; Becker, J. H.A Base de Ubatuba do Projeto TAMAR/IBAMA, implantada em 1991, monitora e protege uma área de alimentação das tartarugas marinhas, localizada no litoral norte do Estado de São Paulo. O Programa de Conservação é direcionado às capturas incidentais pela pesca, utilizando como estratégias educação ambiental, ação social e pesquisa científica. A grande demanda de tartarugas marinhas debilitadas, doentes ou feridas culminou na implantação do Centro de Reabilitação e a contratação de um médico veterinário. Este trabalho relata os atendimentos realizados no período de novembro/2001 a março/2004.Item Reabilitação de Tartarugas marinhas realizadas pelo projeto TAMAR- IBAMA no Brasil.(2004) Baptistotte, C.; Werneck, M. R.O Projeto TAMAR-IBAMA, programa brasileiro de conservação e pesquisa das tartarugas marinhas, foi implantado em 1980. Atualmente, mantém 20 Bases de campo em 8 estados brasileiros, monitorando e protegendo áreas de ocorrências das 5 espécies de tartarugas marinhas que ocorrem no litoral e ilhas oceânicas do Brasil: Chelonia mydas; Caretta caretta; Eretmochelys imbricata; Lepidochelys olivacea e Dermochelys coriacea. As atividades desenvolvidas concentram-se no monitoramento das áreas de alimentação e desova, assim como das capturas incidentais pela pesca e encalhes, utilizando como estratégias pesquisa científica, educação ambiental e ação social.Item Reproductive Biology and Concervation Status of the Loggerhead Sea Turtle (Caretta caretta) in Espírito Santo State, Brazil.(Cheloonian Research Foundation, 2003-12) Baptistotte, C.; Thomé, J. C. A.; Bjorndal, K. A.The 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 The Interplay of Homing and Dispersal in Green Turtles(2012-10-08) Naro-Maciel, E.; Bondioli, Ana Cristina Vigliar; Martin, Meredith; Almeida, A. P.; Baptistotte, C.; Bellini, C.; Marcovaldi, M. A.; Santos, A. J. B.; Amato, G.Current understanding of spatial ecology is insufficient in many threatened marine species, failing to provide a solid basis for conservation and management. To address this issue for globally endangered green turtles, we investigated their population distribution by sequencing a mitochondrial control region segment from the Rocas Atoll courtship area (n = 30 males) and four feeding grounds (FGs) in Brazil (n = 397), and compared our findings to published data (nnesting = 1205; nfeeding = 1587). At Rocas Atoll, the first Atlantic courtship area sequenced to date, we found males were differentiated from local juveniles but not from nesting females. In combination with tag data, this indicates possible male philopatry. The most common haplotypes detected at the study sites were CMA-08 and CMA-05, and significant temporal variation was not revealed. Although feeding grounds were differentiated overall, intra-regional structure was less pronounced. Ascension was the primary natal source of the study FGs, with Surinam and Trindade as secondary sources. The study clarified the primary connectivity between Trindade and Brazil. Possible linkages to African populations were considered, but there was insufficient resolution to con clusively determine this connection. The distribution of FG haplotype lineages was nonrandom and indicative of regional clustering. The study investigated impacts of population size, geographic distance, ocean currents, and juvenile natal homing on connectivity, addressed calls for increased genetic sampling in the southwestern Atlantic, and provided data important for conservation of globally endangered green turtles.