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Previous issue date: 2016-12-19 / As cinco esp?cies de tartarugas marinhas que ocorrem no litoral brasileiro est?o classificadas como esp?cies em risco de extin??o pelas listas mundiais de esp?cies amea?adas. Tal status ? decorrente das diferentes amea?as que esses animais v?m sofrendo no decorrer das ?ltimas d?cadas, dentre estas a destrui??o do habitat, fotopolui??o, pesca incidental, tr?fego de ve?culos e preda??o de ovos. Outra consider?vel amea?a a esses animais, descrita na literatura, ? a ocorr?ncia da fibropapilomatose. Esta doen?a acomete as tartarugas marinhas, em especial indiv?duos juvenis da esp?cie Chelonia mydas, embora tenha sido descrito tamb?m nas demais esp?cies. Este trabalho pretende investigar a distribui??o espacial e temporal dos registros de tartarugas marinhas com fibropapilomatose que encalham, vivos ou mortos, entre as praias dos munic?pios de Icapu?/CE at? Cai?ara do Norte/RN, bem como analisar os aspectos histopatol?gicos das les?es. Para isso foram realizados monitoramentos di?rios, utilizando-se quadriciclos, a fim de registrar a ocorr?ncia de tartarugas marinhas nas praias da Bacia Potiguar RN / CE. Os animais que foram encontrados mortos, dependendo do estado da carca?a, foram avaliados quanto ? esp?cie, ao n?mero e posicionamento dos tumores, fotografados e georreferenciados. Os animais vivos foram resgatados e translocados para a Base de Reabilita??o do Projeto Cet?ceos da Costa Branca/UERN-Areia Branca onde foi realizado o procedimento de contagem e localiza??o dos tumores. Para o desenvolvimento da pesquisa est?o sendo utilizados dados coletados entre os anos de 2011 e 2015. Dentre as 3.960 tartarugas marinhas encalhadas, 680 apresentaram tumores sugestivos de fibropapilomatose, valores estes que apresentaram crescimento durante os anos estudados. No que diz respeito a varia??o por trecho de monitoramento, a maior frequ?ncia de animais acometidos pela doen?a foi registrada no trecho C correspondente a "Guamar?-Macau?. Quanto a fase de desenvolvimento, a maior parte dos indiv?duos acometidos estavam no est?gio juvenil, por?m tamb?m houve registro de animais adultos e subadultos acometidos pela doen?a. As les?es se configuram por apresentarem hiperplasia da epiderme, do conjuntivo, desorganiza??o de fibras col?genas, hiperqueratiniza??o de regi?es dentro do tecido conjuntivo e vacuoliza??o no citoplasma. Al?m disso, foram observados ovos de parasitas presentes dentro da estrutura do fibropapiloma, al?m das proje??es papilares que marcam de maneira peculiar a estrutura tumoral. A Bacia Potiguar RN / CE mostrou-se como sendo um trecho com caracter?sticas compartilhadas por outras ?reas de registros da fibropapilomatose e com fatores que podem ter contribu?do para o aumento dos registros de animais acometidos. Por se tratar de uma doen?a debilitante, que acomete principalmente animais juvenis e com etiologia ainda n?o bem definida, a fibropapilomatose impulsiona pesquisas que visam melhor entendimento da doen?a para conserva??o das esp?cies de tartarugas marinhas. / The five species of sea turtles that occur in the brazilian coast are classified as species at risk of extinction by global lists of threatened species. Such status is due to the different threats that these animals have suffered over the past decades, among them the destruction of natural habitat, fotopolui??o, incidental fishing, vehicle traffic and predation of eggs. Another significant threat to these animals, described in the literature, is the occurrence of fibropapillomatosis. This disease affects sea turtles, especially juveniles of the species Chelonia mydas, although it was also described in other species. This work intends to investigate the spatial and temporal distribution of records of sea turtles with fibropapilamatose stranding, living or dead, from the beaches of the municipalities of Icapu? / CE by Cai?ara do Norte / RN, and to characterize the histology of these lesions. For this daily monitoring were performed, using quads in order to record the occurrence of sea turtles in the Bacia Potiguar RN / CE of beaches. Dead animals, depending of the decomposition state, they were evaluated for the type, number and positioning of tumors, photographed and georeferenced. The live animals were rescued and translocated to the rehabilitation base of the project Cet?ceos da Costa Branca / UERN-Areia Branca where we performed the count procedure and location of the tumors. For the development of the research are being used data collected between 2011 and 2015. Among the 3.960 stranded sea turtles, 680 had tumors caused by fibropapillomatosis, values which grew during the years studied. In relation to the variation between the monitored sectors, the highest frequency of animals affected by the disease was recorded in the sector ?C? "Guamar?-Macau." As the development phase, most of the affected individuals were in the immature stage, but there were also adult animals record and subadult affected by the disease. The lesions are configured for presenting papillary projections and epidermal hyperplasia, hyperkeratinisation regions within the connective tissue and points with suggestive of inflammation erythrocyte clusters. In addition, we observed parasites and leech eggs present within tumor structure. The Bacia Potiguar RN / CE has been shown to be an excerpt with features shared by other areas of fibropapillomatosis occurrence and with factors that may have contributed to the increase of the records of affected animals. Because it is a debilitating disease, which affects mainly juvenile animals with etiology not yet well defined, fibropapillomatosis promotes research aimed at a better understanding of the disease for the conservation of sea turtle species.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/22650 |
| Date | 19 December 2016 |
| Creators | Silva J?nior, Edson Soares da |
| Contributors | 67196403487, http://lattes.cnpq.br/6556168670883302, Matushima, Eliane Reiko, 07460022896, Silva, Fl?vio Jos? de Lima, 48554367472, http://lattes.cnpq.br/1421802360229451, Costa, Simone Almeida Gavilan Leandro da |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM BIOLOGIA ESTRUTURAL E FUNCIONAL, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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