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 zoon??tico

Com o objetivo de estudar os helmintos parasitos de linguados, foram necropsiados 60 esp??cimes de Paralichthys is??sceles Jordan, 1890 e 25 de P. patagonicus Jordan, 1889 coletados no litoral do Estado do Rio de Janeiro, Brasil, no per??odo de outubro de 2006 a mar??o de 2008. Em P. is??sceles foram coletados 1820 esp??cimes de Hysterothylacium sp. em terceiro e quarto est??gios larvares, com preval??ncia de 100%, intensidade m??dia de infec????o de 30,3, abund??ncia m??dia de 32 e amplitude de varia????o da intensidade de infec????o de 1 a 596. Macroscopicamente foram observados n??dulos na mucosa do est??mago e serosa do intestino. No exame histopatol??gico desses n??dulos foram observadas se????es de larvas inseridas dna musculatura abdominal, nas camadas submucosa, muscular e serosa do est??mago e do intestino, sempre associadas a granulomas, constitu??dos por tecidos conjuntivo fibroso, macr??fago e linf??citos, que centralizavam al??m das larvas, material necr??tico e t??neis revestidos por material acid??filo. As altera????es patol??gicas e ocorr??ncias de Hysterothylacium sp. foram pela primeira vez reportadas nesse hospedeiro. Outras quatro larvas de relev??ncia zoon??tica foram identificadas e reportadas considerando as suas preval??ncias (P). Para as esp??cies de Raphidascaris sp. (P=36,7%), Terranova sp. (P=5%), Anisakis simplex (P=5%) e de Contracaecum sp. (P=3,3%). Paralichthys is??sceles ?? um novo hospedeiro para as larvas de Anisakis simplex e Hysterothylacium sp. Em P. is??sceles e P. patagonicus foram coletadas 169 larvas de trematodeos dogen??ticos pertencentes ?? fam??lia Didymozoidae, identificadas como tipos Torticaecum e Neotorticaecum com preval??ncia de 80% para o primeiro hospedeiro e 40% para o segundo, sendo o primeiro registro na Am??rica do Sul, Oceano Atl??ntico, Brasil. Em P. is??sceles foram realizados a identifica????o taxon??mica dos cest??ides encontrados, tendo em conta a import??ncia higi??nico-sanit??ria deste pescado nos mercados brasileiros e estrangeiros, onde em 56 (93,3%) dos peixes coletados infectados, encontrou-se pelo menos um exemplar de metacestoides, inclu??dos em tr??s ordens diferentes: Diphyllobotriidea, Trypanorhyncha e Tetraphyllidae. A ordem Diphyllobotriidea estava representa por plerocerc??ides de duas esp??cies: Diphyllobothrium sp. 1 (similar a Diphyllobothrium latum) localizadas no est??mago, na mucosa do est??mago e no mesent??rio e Dyphyllobothrium sp. 2 (similar a D. dendriticum) no intestino, f??gado, ov??rio e a cavidade abdominal. As duas esp??cies apresentam preval??ncia 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 dogen??ticos 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%