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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Helmintos parasitos de linguados (paralichthys isosceles Jordan, 1980 e P. patagonicus Jordan, 1889) do litoral do estado do Rio de Janeiro : taxonomia, patologia e enfoque zoonótico

Felizardo, Nilza Nunes January 2010 (has links)
Submitted by Tatiana Oliveira (tsilva@icict.fiocruz.br) on 2012-06-06T15:04:56Z No. of bitstreams: 1 nilza_n_felizardo_ioc_bp_0024_2010.pdf: 9661682 bytes, checksum: 0ef453a7727a9375eaad508caf8a0e0f (MD5) / Made available in DSpace on 2012-06-06T15:04:56Z (GMT). No. of bitstreams: 1 nilza_n_felizardo_ioc_bp_0024_2010.pdf: 9661682 bytes, checksum: 0ef453a7727a9375eaad508caf8a0e0f (MD5) Previous issue date: 2010 / Fundação Oswaldo Cruz.Instituto Oswaldo Cruz. Rio de janeiro, RJ, Brasil / Com o objetivo de estudar os helmintos parasitos de linguados, foram necropsiados 60 espécimes de Paralichthys isósceles Jordan, 1890 e 25 de P. patagonicus Jordan, 1889 coletados no litoral do Estado do Rio de Janeiro, Brasil, no período de outubro de 2006 a março de 2008. Em P. isósceles foram coletados 1820 espécimes de Hysterothylacium sp. em terceiro e quarto estágios larvares, com prevalência de 100%, intensidade média de infecção de 30,3, abundância média de 32 e amplitude de variação da intensidade de infecção de 1 a 596. Macroscopicamente foram observados nódulos na mucosa do estômago e serosa do intestino. No exame histopatológico desses nódulos foram observadas seções de larvas inseridas dna musculatura abdominal, nas camadas submucosa, muscular e serosa do estômago e do intestino, sempre associadas a granulomas, constituídos por tecidos conjuntivo fibroso, macrófago e linfócitos, que centralizavam além das larvas, material necrótico e túneis revestidos por material acidófilo. As alterações patológicas e ocorrências de Hysterothylacium sp. foram pela primeira vez reportadas nesse hospedeiro. Outras quatro larvas de relevância zoonótica foram identificadas e reportadas considerando as suas prevalências (P). Para as espécies de Raphidascaris sp. (P=36,7%), Terranova sp. (P=5%), Anisakis simplex (P=5%) e de Contracaecum sp. (P=3,3%). Paralichthys isósceles é um novo hospedeiro para as larvas de Anisakis simplex e Hysterothylacium sp. Em P. isósceles e P. patagonicus foram coletadas 169 larvas de trematodeos dogenéticos pertencentes à família Didymozoidae, identificadas como tipos Torticaecum e Neotorticaecum com prevalência de 80% para o primeiro hospedeiro e 40% para o segundo, sendo o primeiro registro na América do Sul, Oceano Atlântico, Brasil. Em P. isósceles foram realizados a identificação taxonômica dos cestóides encontrados, tendo em conta a importância higiênico-sanitária deste pescado nos mercados brasileiros e estrangeiros, onde em 56 (93,3%) dos peixes coletados infectados, encontrou-se pelo menos um exemplar de metacestoides, incluídos em três ordens diferentes: Diphyllobotriidea, Trypanorhyncha e Tetraphyllidae. A ordem Diphyllobotriidea estava representa por plerocercóides de duas espécies: Diphyllobothrium sp. 1 (similar a Diphyllobothrium latum) localizadas no estômago, na mucosa do estômago e no mesentério e Dyphyllobothrium sp. 2 (similar a D. dendriticum) no intestino, fígado, ovário e a cavidade abdominal. As duas espécies apresentam prevalência de 6% e 10% respectivamente. A ordem Trypanorhyncha estava representada por Grillotia carvajalregorum (Carvajal & Rego, 1993) Menoret & Ivanoc, 2009 (P=73%), Nybelinia lingualis (Cuvier, 1817) Dollfus, 1927 (P=57%), Heteronybelinia nipponica (Yamaguti, 1952) (P=35%), Otobothium sp. (P=15%) / In order to study the helminth parasites of pigs were necropsied 60 specimens of Paralichthys isosceles Jordan, 1890 and 25 P. patagonicus Jordan, in 1889 the State collected on the coast of Rio de Janeiro, Brazil, from October 2006 to March 2008. In P. Isosceles 1820 specimens were collected Hysterothylacium sp. third and fourth larval stages, with a prevalence of 100%, mean intensity of infection was 30.3, mean abundance of 32 and range of variation of intensity of infection of 1-596. Macroscopically nodules were observed in the stomach mucosa and serosa of the intestine. The histopathological sections of the nodules were observed in larvae inserted DNA abdominal musculature, in the submucosal layers, muscle and serosa of the stomach and intestine, where associated with granulomas, consisting of fibrous tissues, macrophages and lymphocytes, also centered larvae, material necrotic material and tunnels coated acidophilus. Pathological changes and occurrences of Hysterothylacium sp. were first reported in this host. Four other important zoonotic larvae were identified and reported considering their prevalence (P). The following species of Raphidascaris sp. (P = 36.7%), Terranova sp. (P = 5%), Anisakis simplex (P = 5%) and Contracaecum sp. (P = 3.3%). Paralichthys isosceles is a new host for the larvae of Anisakis simplex and Hysterothylacium sp. In P. isosceles and P. patagonicus were collected 169 larval trematodes belonging to the family dogenéticos Didymozoidae, identified as types and Torticaecum Neotorticaecum with a prevalence of 80% for the first host and 40% for the second, being the first record in South America, Atlantic Ocean, Brazil. In P. isosceles were carried out taxonomic identification of the cestodes found, taking into account the importance of sanitary conditions in fish markets from Brazil and abroad, where in 56 (93.3%) of infected fish collected, met at least one copy of metacestodes, included in three different orders: Diphyllobotriidea, and Trypanorhyncha Tetraphyllidae. The order was represented by Diphyllobotriidea plerocercoids of two kinds: Diphyllobothrium sp. 1 (similar to Diphyllobothrium latum) located in the stomach, the gastric mucosa and the mesenterium and Dyphyllobothrium sp. 2 (similar to D. dendriticum) in the intestine, liver, ovary and abdominal cavity. Both species have a prevalence of 6% and 10% respectively. The order was represented by Trypanorhyncha Grillotia carvajalregorum (Carvajal & Rego, 1993) Menoret & Ivanoc, 2009 (P = 73%), Nybelinia lingualis (Cuvier, 1817) Dollfus, 1927 (P = 57%), Heteronybelinia nipponica (Yamaguti, 1952 ) (P = 35%), Otobothium sp. (P = 15%)

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