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Centro Nacional de Pesquisa e Conservação de Tartarugas Marinhas e da Biodiversidade Marinha do Leste
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Item Growth and mortalities of the Pink-shrimp(2006-05) N . O ., Leite JR LEITE; JR . , PetrereFrom July, 1999 until July, 2001 data from the pink-shrimp Farfantepenaeus brasiliensis Latreille, 1970 and F. paulensis Pérez-Farfante, 1967 fishery were collected from trawling by the fishing fleet based in Santos/Guarujá-SP. Growth and mortalities of these species were studied. F. brasiliensis and F. paulensis have longevity of 2 years and growth estimates of L∞ = 29.0 cm and k = 1.24 year-1 for F. brasiliensis and L∞ = 27.5 cm and k = 1.34 year-1 for F. paulensis. Females reach bigger lengths than males in both species. Natural mortalities (M) were 1.80 and 1.90 year-1 and fishing mortalities (F) were 4.7 and 6.8 year-1 for F. brasiliensis and F. paulensis, respectively. Survival rates are S = 0.15% and 0.02% for F. brasiliensis and F. paulensis, respectively, which are usually low values for shrimps.Item Stock assessment and fishery management of the pink shrimp Farfantepenaeus brasiliensis Latreille(2006-02-28) LEITE , Junior JR . , N . O; M , Petrere . JR PETRERE; N.O, Junior JR LEITE; M , Petrere . JRQuantitative analyses of the pink shrimp (Farfantepenaeus brasiliensis and Farfantepenaeus paulensis) fisheries were carried out using data collected from July 1999 to July 2001 from the trawling operations of the fishing fleet based in Santos/Guarujá, SP. According to classical models, the fishery is at its maximum sustainable yield. Therefore, reduction of the fishing effort and adequate season and area closures seem to be the best management actions for the pink shrimp fishery.Item Juvenile green turtles (Chelonia mydas) in the effluent discharge channel of a steel plant, Espírito Santo, Brazil, 2000–2006(2010) TOREZANI, E.; BAPTISTOTTE, C.; MENDES, S. L.; BARATA, P. C. R.; Marine Biological Association of the United KingdomThis study, carried out from August 2000 to July 2006, began out of the recognition of a special ecological situation, when an aggregation of juvenile green turtles (Chelonia mydas) was found inside the effluent discharge channel of a steel plant located near Vito´ria, the State of Espı´rito Santo capital, eastern Brazil. The green turtles were captured through either cast nets or a set net or by hand (one turtle was captured alive on one of the channel banks); after data collection, they were released back into the discharge channel. Information is here reported on the temporal pattern of occurrence, size-classes, residency, presence of tumours and growth rates of tumoured and non-tumoured green turtles in the study area. A total of 640 individual green turtles were captured in the six years; 448 of them were captured just once, and 192 were captured two or more times. Curved carapace length ranged between 25.2 and 77.5 cm. Among the captured green turtles, 59.1% were classified as being in normal body condition and without any tumours, 6.6% were either underweight or emaciated but without any tumours, and 34.4% had tumours, with different levels of the tumour severity score.Item Captura incidental de tortugas marinas por las flotas de palangre pelágico de Brasil y Uruguay (1998 - 2010)(2014) GIFFONI, B.; LEITE JR, N.; MILLER, P.; PONS, M.; SALES, G.; DOMINGO, A.Sea turtles are highly migratory species and during their long life cycle they are face to different threats. One of the biggest threat is the incidental captures by fisheries, thus longline fishery has been pointed out as great concern due to the high captures rates. This work summarize the incidental capture of sea turtles by Brazilian and Uruguayan longline fleet, taking account different aspects to be considered in sea turtles productivity and susceptibility analyses - PSA. The data analyzed were collected by observers of the Programa Nacional de Observadores a Bordo de la Flota Atunera Uruguaya (PNOFA) from Uruguay, and Programa Nacional de Observadores de Bordo da Frota Pesqueira do Brasil (PROBORDO), Fundação Pró-TAMAR, Instituto ALBATROZ and Núcleo de Educação e Monitoramento Ambiental (NEMA) from Brazil. On total 25.164.089 hooks were sampled by Brazil and Uruguay between 2008 and 2010. On average, the sampled effort represented 1,5% of total effort applied at the same area by ICCAT CPCs. Loggerhead was the specie most captured (n =6.594), followed by Leatherback (n = 1.379) and Olive ridley (n = 600). All specie nest in Brazil. Regarding to productivity aspects, the Brazilian population of loggerhead, leatherback and olive ridley are increasing. For the Susceptibility analyses and considering availability, 7 different RMUs are being impacted by longline. Related to encounterability, the 3 turtle species spent the most time at the same depth range as Brazilian and Uruguayan longline toward to catch swordfish. For selectivity, juveniles of the loggerhead turtle are the most captured, while for olive ridley and leatherback, sub-adult and adult have been most captured by longline fleet of both countries.- Prevalence of internal tumor in Green Turtles (Chelonia mydas) affected by Fibropapilomatosis in Brazil(2015) D´AZEREDO, F; PIRES, T; MONTE, T; MELO, T.D; VELLOSO, R; GOLDBERG, D; BAPTISTOTTE, C; ALMOSNY, N; BRUNO, S
Item Fibropapillomatosis in green turtles Chelonia mydas in Brazil: characteristics of tumors and virus.(Diseases of Aquatic Organisms Series, 2014) RODENBUSCH, C. R; BAPTISTOTTE, C; WERNECK, M. R; PIRES, T. T; MELO, M. T. D; ATAÍDE, M. W; REIS, K. D. H. L; TESTA, P; ALIEVE, M. M; CANAL, C. WFibropapillomatosis (FP) is a benign neoplasia that affects physiological functions of sea turtles and may lead to death. High prevalence of FP in sea turtle populations has prompted several research groups to study the disease and the associated herpesvirus, chelonid herpesvirus 5 (ChHV5). The present study detected and quantified ChHV5 in 153 fibropapilloma samples collected from green turtles Chelonia mydas on the Brazilian coast between 2009 and 2010 to characterize the relationship between viral load and tumor characteristics. Of the tumor samples collected, 73 and 87% were positive for ChHV5 in conventional PCR and real-time PCR, respectively, and viral loads ranged between 1 and 118.62 copies cell−1. Thirty-three percent of turtles were mildly, 28% were moderately and 39% were severely affected with FP. Skin samples were used as negative control. High viral loads correlated positively with increasing FP severity in turtles sampled on the Brazilian coast and with samples from turtles found dead in the states of São Paulo and Bahia. Six viral variants were detected in tumor samples, 4 of which were similar to the Atlantic phylogenetic group. Two variants were similar to the western Atlantic/eastern Caribbean phylogenetic group. Co-infection in turtles with more than one variant was observed in the states of São Paulo and Bahia.Item Relationship between fibropapillomatosis and environmental quality: a case study with Chelonia mydas off Brazil(2010-02-24) SANTOS G., Robson; MARTINS S., Agnaldo; TOREZANI, Evelise; BAPTISTOTTE, Cecília; NÓBREGA F., Julyana; HORTA A., Paulo; WORK M., Thierry; BALAZS H., GeorgeWe documented the presence of fibropapillomatosis (FP), a debilitating tumor-forming disease, in marine turtles in Espírito Santo Bay (Brazil) from March 2007 to April 2008, and assessed the value of a specific environmental index for predicting the prevalence of FP. Turtles were captured monthly with entanglement nets and scored for presence and severity of FP. For the assessment of habitat quality, we used the ecological evaluation index (EEI) based on benthic macrophytes. The FP free control area was classified as good quality (EEI = 8) and the study area, with high FP prevalence, was classified as bad quality (EEI = 2). Prevalence of FP in the study area was 58.3% with an average of 40 tumors per individual, and prevalence varied positively with curved carapace length (CCL). No FP was seen in the control area. The number of turtles heavily afflicted (tumor score category 3) was 10 times larger than those lightly affected (tumor score category 1). Most tumors were found on or near the front and rear flippers; no oral tumors or internal tumors were found. At recapture, 41% of formerly tumor-free turtles revealed FP, often increasing in severity with time, and very few turtles showed signs of disease regression. From the results of this study we concluded that FP is particularly severe in Espírito Santo Bay. Future studies should focus on evaluating how widespread FP is in Brazil, whether prevalence is increasing or decreasing, and elucidating the pathology and pathogen esis of FP in sea turtles in BrazilItem Relationship between fibropapillomatosis and environmental quality(2010-02-24) SANTOS, R. G.; MARTINS, A. S.; TOREZANI, E.; BAPTISTOTTE, C.; FARIAS, J. N.; HORTA, P. A.; WORK, T. M.; BALAZS, G. H.We documented the presence of fibropapillomatosis (FP), a debilitating tumor-forming disease, in marine turtles in Espírito Santo Bay (Brazil) from March 2007 to April 2008, and assessed the value of a specific environmental index for predicting the prevalence of FP. Turtles were captured monthly with entanglement nets and scored for presence and severity of FP. For the assessment of habitat quality, we used the ecological evaluation index (EEI) based on benthic macrophytes. The FPfree control area was classified as good quality (EEI = 8) and the study area, with high FP prevalence, was classified as bad quality (EEI = 2). Prevalence of FP in the study area was 58.3% with an average of 40 tumors per individual, and prevalence varied positively with curved carapace length (CCL). No FP was seen in the control area. The number of turtles heavily afflicted (tumor score category 3) was 10 times larger than those lightly affected (tumor score category 1). Most tumors were found on or near the front and rear flippers; no oral tumors or internal tumors were found. At recapture, 41% of formerly tumor-free turtles revealed FP, often increasing in severity with time, and very few turtles showed signs of disease regression. From the results of this study we concluded that FP is particularly severe in Espírito Santo Bay. Future studies should focus on evaluating how widespread FP is in Brazil, whether prevalence is increasing or decreasing, and elucidating the pathology and pathogenesis of FP in sea turtles in Brazil.Item Application of flow cytometry and gas chromatography to Study fibropapillomatosis in chelonia mydas (testudines, Cheloniidae) in brazil and their contributions for conservation of this species.(2012) ROSSI, S; SANCHEZ-SARMIENTO, A.M; VALE, L.A.S; GENOY-PUERTO, E. A; PRIOSTE, F.E.S; GATTAMORTA, M.A; KINOSHITA, D; HAZARBASSANOV, N.G.T.Q; BECKER, J.H; LIMA, E.H.S.M; BAPTISTOTTE, C; GOLDBERG, D.W; SANTOS, A.J.B; BORTOLON, L. F; MATUSHIMA, E. R- Not just another mixed stock analysis: green turtles of Espírito Santo, Brazil.(2010) NARO-MACIEL, E; MARTIN, M; BONDIOLI, A. C. V; ALMEIDA, A. P; TOREZANI, E; BAPTISTOTTE, C; MARCOVALDI, M. A; AMATO, G; DE SALLE, RIn the Southwestern Atlantic Ocean, sea turtles are exposed to myriad threats including disease, fisheries bycatch, and industrial or coastal development, but protected by effective conservation organizations. In Espirito Santo, Brazil, green turtles (Chelonia mydas) with relatively high incidence of fibropapillomatosis tumors routinely strand in the vicinity of the state capital, Vitória, a highly urbanized area that encompasses the effluent discharge channel of a local steel plant. This is also a particularly interesting population because of its relative proximity to the regionally important Trindade Island rookery, whose feeding grounds have not been convincingly identified to date. To investigate the population distribution of the at-risk turtles, we sequenced a segment of the mitochondrial control region (862 bp; n = 132). Eight mtDNA haplotypes were revealed, of which the most common were CMA-08 and CMA-05. Haplotypes CMA-06 and CMA-09 were each found in six individuals, and rare haplotypes CMA-03, CMA-10, CMA-23, and CMA-32 were also detected. Two kinds of "many-to-many" mixed stock analyses were carried out, taking into account or alternately disregarding source nesting population size. The same approach was taken with traditional MSAS ("one-to-many"), and the main differences between the "one-to-many" and "many-to-many" results are reported. The analyses that included population size and all available data were most consistent with expectations. We recommend caution when employing different mixed stock analysis methods, and emphasize the importance of exploring alternate ways of investigating the origins of mixed stocks, including modeling approaches. These data will provide insight into population isolation and conservation priorities necessary to establish whether areas should be managed as independent units or as regional populations, and will clarify questions of scale in conservation and management, providing a scientific basis for conservation prioritization.