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| Registros recuperados: 119 | |
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| THATCHER,Vernon E.. |
| Anphira branchialisgen. et sp. nov. (Crustacea, Isopoda, Cymothoidae) is described from the dorsal areas of the gill chambers of three species of piranhas (Serrasalmusspp.). The fishes were caught in rivers near Manaus, Amazonas State and on Maracá island, Federal Territory of Roraima, Brasil. The new genus and species is characterized by having large, flat coxal plates on ail 7 pereonites. These plates usually extend beyond the margins of the following segments and the 7th ones extend nearly to the pleotelson and cover the lateral margins of the pleonites. The mandible of this species is rounded, "foot shaped" and without incisor. The mandibular palp is short and stout. The maxillules have 3 terminal and 2 subterminal spines. The pleopods are simple... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Isopod; Cymothoid; Parasite; Piranha; Amazon. |
| Ano: 1993 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671993000300297 |
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| AGUIAR,Julio Cesar Cenci de; BUENO,Glauco Baptista Franco; SANTOS,Sonia Maria Cursino dos; ADRIANO,Edson Aparecido. |
| ABSTRACT During a survey conducted in the Lajeado Reservoir of the Tocantins River, in the state of Tocantins, Brazil, dactylogyrids were recovered from the gills of Pimelodina flavipinnis. Initial morphological analysis showed these dactylogyrids shared aspects of character with species of Demidospermus, with affinity to Demidospermus pinirampi, despite exhibiting differences with the original description by Kritsky et al. (1987) regarding the vagina, the base of the male copulatory organ and the shape and length of the bars. The analysis of the holotypes of D. pinirampi and its most morphologically close species, Demidospermus luckyi, revealed that these dactylogyrids were indeed D. pinirampi. This study therefore reports a new host and locality of... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: South America; Tocantins; Morphology; Parasite; Pimelodidae. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400355 |
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| THATCHER,Vernon E.. |
| Studies of the cymothoid isopod Livoneca symmetricaVan Name, 1925, showed that this species has characters that preclude its inclusion in LivonecaLeach, 1818, or in any other known genus. The species is redescribed on the basis of male and female specimens from the mouth cavities of Amazonian piranhas (Serrasalmus spilopleura(Kner) and S. elongatusKner) and Vanameagen. nov. is proposed for it. The new genus is defined as having: a cephalon that is not immersed in pereonite 1; mandibles that are "foot-shaped" and without incisors, pereopods that are long and unequal in size and shape; a pleon that is not immersed in the pereon; and a pleotelson that is inflated anteriorly and medially. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Isopod; Cymothoid; Parasite; Piranha; Amazon. |
| Ano: 1993 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671993000300287 |
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| Tavernari, Fernando de Castro; UFRPE; Takemoto, Ricardo Massato; UEM; Lacerda, Ana Carolina Figueredo; UEM; Pavanelli, Gilberto Cézar; UEM. |
| A new species of Demidospermus Suriano, 1983 is described from the gills of Auchenipterus osteomystax Miranda-Ribeiro, 1918 (Auchenipteridae), collected in the upper Paraná river floodplain, Brazil. The gills were removed and preserved in 5% formalin. Later the parasites were removed from the gills with the aid of a stereomicroscope and conserved in 70% alcohol. Some specimens were stained with Gomori’s trichrome, dehydrated in absolute alcohol and cleared with faia creosote to observe the internal organs. Other specimens were mounted in Hoyer’s medium for the study of the sclerotized structures. The present study describes a new monogenetic species, Demidospermus osteomystax n. sp., characterized by: tandem gonads; V-shaped haptoral bars with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Auchenipterus osteomystax; Demidospermus; Parasite; Monogenea; Paraná river 2.13.00.00-3 Auchenipterus osteomystax; Demidospermus; Parasite; Monogenea; Paraná river Parasitologia. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/3368 |
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| Paes, Jaciara Vanessa Krüger; Unesp - Campus de Botucatu; Carvalho, Edmir Daniel; Unesp - Campus de Botucatu; Silva, Reinaldo José; Unesp - Campus de Botucatu. |
| This study aimed to evaluate the infection by the Austrodiplostomum compactum metacercariae in fishes from the Nova Avanhandava Reservoir, low Tietê river, São Paulo State, Brazil. The parasites were collected from eye (aqueous and vitreous humor), fixed in AFA solution and stained with carmine. The morphometric analysis was performed using a computerized system for analysis of images QWin Lite 2.5 (Leica). Prevalence, mean intensity of infection and abundance of infected fish were calculated. Of the 22 species of fish registered, five were infected by metacercariae: Hoplias malabaricus, Metynnis maculatus, Plagioscion squamosissimus, Satanoperca pappaterra and Schizodon nasutus. Of the 627 fish evaluated, 34% were infected. A higher prevalence was... |
| Tipo: Níveis parasitários (abundância e intensidade média de infecção) |
Palavras-chave: 2.13.00.00-3; 2.13.02.02-2 Diplostomidae; Trematode; New host; Eye; Parasite Parasitologia Diplostomidae; Trematode; New host; Eye; Parasite. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5675 |
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| Jesus, Elson Cardoso de; Cardoso, Lucas; Ferreira, Tamiris Henrique; Martins, Mauricio Laterça; Rodrigues, Marília Danyelle Nunes. |
| Isopods Cymothoidae are organisms that parasitize several fish species, both marine and freshwater, provoking important physiological alterations and secondary infections. The genus Braga was proposed to harbor three species of parasitic isopods in freshwater fish from South America: B. brasiliensis, B. cichlae and B. nasuta. Posteriorly, other four species were included: B. patagonica, B. amapaensis, B. fluviatilis and B. bachmanni. Regarding the geographical distribution of the genus, there are registers in Brazil, Argentina, Suriname and Paraguay. In this study, 3,625 fingerlings of pirarucu Arapaima gigas were examined from a commercial fish farm in the Amazon region, Pará State, to observe and identify possible parasites. A total of eleven... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.13.00.00-3 Amazon; Pirarucu; Farming; Parasite; Isopoda. Parasita em peixes. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35080 |
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| Morey, Germán Augusto Murrieta. |
| Corydoras splendens (Castelnau, 1855) and Brochis multiradiatus (Orcés V., 1960) are highly demanded for exporters in the Peruvian Amazon and importers all over the world. The exportation of this fish species may represent a gateway for endoparasites to enter in a new environment with serious effects, so, the present study reports the presence of Tylodelphys sp. infecting C. splendens and B. multiradiatus. Fish were acquired from fishermen of the city of Iquitos, Peru. After the necropsy and analyses of the fish, metacercariae of Tylodelphys sp. were found in the liver and intestine. This finding represents the first report of Tylodelphys Diesing, 1850 infecting a fish in the Peruvian Amazon. Considering the possible damages caused by species of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Callichthyids; Digenean; Ornamental fish; Parasite. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/41280 |
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| Papazian-Cabanas,Rodrigo M.; Araújo,Eduardo J.A.; Silva,Aristeu V. da; Sant'Ana,Débora M.G.. |
| The effects of acute and chronic infection caused by Toxoplasma gondii on duodenal myenteric neurons were analyzed. Eighteen rats were assigned into four groups: Acute Control Group (ACG, n=4); Acute Experimental Group (AEG, n=4); Chronic Control Group (CCG, n=5); and Chronic Experimental Group (CEG, n=5). Rats from the AEG and CEG were inoculated orally with 105 genotype III (BTU-II strain) tachyzoites of T. gondii isolated from a dog with neurological signs. Acute groups were killed after 24 hours after the inoculation and the chronic groups after 30 days. Whole-mount from the duodenum were stained with Giemsa. The population density of myenteric neurons, as well the body cell, nuclear and cytoplasmic area were analyzed. Both acute and chronic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enteric nervous system; Infection; Parasite; Toxoplasmosis. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000300016 |
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| PEREIRA,BARBARA B.; BASTOS,BETHÂNIA F.; KEIDEL,LUCAS; LELES,DANIELA; BRENER,BEATRIZ. |
| Abstract The clinical importance of heartworm infection in cats has indeed increased in recent years. Dirofilaria immitis infection has been reported worldwide in cats and continues to be regularly diagnosed in endemic areas. The diagnosis can be overlooked easily, especially in Brazil, where there is not a specific feline immunodiagnostic test, forcing the veterinarians to use a test made for the canine host. In 2015, a 10-year-old female neutered cat was diagnosed with D. immitis using an antigen serological test, based on imunocromatography and designed for dogs. The modified Knott test was negative. As the disease progressed, the cat showed clinical signals of respiratory distress, such as dyspnoea and polypnea in addition to prostration and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cat; Parasite; Dirofilariasis; Immunodiagnosis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502293 |
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| Tavares-Dias,M.; Neves,L.R.; Santos,E.F.; Dias,M.K.R.; Marinho,R.G. B.; Ono,E.A.. |
| The infestation rate in Colossoma macropomum, hybrid tambacu (C. macropomum x Piaractus mesopotamicus) and hybrid tambatinga (C. macropomum x Piaractus brachypomum) with Perulernaea gamitanae Thatcher and Paredes, 1985 from two fish farms in Amapá State, Brazil was studied. Lernaeid parasites (n=2887) were collected mainly on the tongue and the mouth cavity and also on cartilage of gill arches and filaments. Inflammation and fibrous nodules were observed on the attachment sites of the parasites. The infestation rate varied according to the fish farm and host. The prevalence of P. gamitanae was of 100% in hosts from one fish farm and was lower in the other fish farm. Higher intensity of P. gamitanae occurred in hybrids tambacu and tambatinga, but despite... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Freshwater fish; Amazonia; Crustacean; Infestation; Parasite. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000400026 |
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| Bicalho,K.A.; Araújo,F.T.M.; Rocha,R.S.; Carvalho,O.S.. |
| The sanitary conditions of 13 animal houses in nine public institutions in Minas Gerais, and the presence of endo and ectoparasites of mice and rats colonies kept in these facilities were evaluated. Data about barriers to prevent the transmission of diseases and a program of sanitary monitoring were obtained through a questionnaire and local visit. Parasitological methods were performed for diagnosing mite, lice, helminthes, and protozoa parasites in 344 mice and 111 rats. Data have shown that the majority of the animal houses had neither proper physical environment nor protection barriers to prevent the transmission of infections. Parasitological results have shown that only one animal house (7.7%) had parasite free animals, whereas the others have... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mice; Rat; Animal house; Parasite; Sanitary barrier. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000600020 |
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| Gilioli,R.; Silva,F.A.. |
| Thirty-one captive maned wolves (Chrysocyon brachyurus, Illiger 1815) from 11 Zoos at the State of São Paulo, Brazil, were screened to investigate the presence of parasites and Salmonella infection by parasitological diagnostic methods and fecal selective culture. The most frequent ecto and endoparasites found were Ctenocephalides felis (56.2%), Rhipicephalus sanguineus (12.5%), Ancylostoma caninum (45.1%), Strongyloides sp. (29.0%), Uncinaria stenocephala (3.2%), Capillaria sp. (3.2%), Entamoeba sp. (22.9%), Sarcocystis sp. (29.0%), Cryptosporidium sp. (19.3%), Eimeria sp. (19.3%), Giardia sp. (9.6%) and Isospora sp. (3.2%). Four different serotypes of Salmonella were identified in six animals (25%). Only one infected animal showed clinical signs of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maned-wolf; Chrysocyon brachyurus; Parasite; Salmonella spp.; Zoo. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352000000400008 |
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| Garcia,F.; Fujimoto,R.Y.; Martins,M.L.; Moraes,F.R.. |
| This work investigated the relationship between water characteristics and infestation of protozoan parasites, Icthyophthirius multifiliis and Trichodina sp., in swordtails (Xiphophorus helleri) and platy (Xiphophorus maculates) collected in an ornamental fish farm in São Paulo, Brazil. Fish were monthly collected from ponds and tanks for one year. The prevalence rates in fish from tanks and ponds were, respectively, 34.2% and 22.5% for I. multifiliis, and 13% and 54.2% for Trichodina sp. Increased electric conductivity and pH provoked reduction of I. multifiliis infestation. Low oxygen concentration increased Trichodina sp. infestation. The use of salt to increase the electric conductivity of water was a method to control I. multifiliis. Low dissolved... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Swordtails; Platy; Parasite; Protozoan; Trichodina sp.; Icthyophthirius multifiliis. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000100022 |
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| Meirinho,Patrícia do Amaral; Nishimura,Paula Yuri; Pires-Zottarelli,Carmen Lidia Amorim; Mochini-Carlos,Viviane; Pompêo,Marcelo Luiz Martins. |
| A chytrid fungus Olpidium gregarium was found in Rio Grande Reservoir as rotifers populations' parasite. Along the reservoir central axis, the rotifers density decreased in the dam direction, while the density of affected rotifers by the chytrid fungus increased in the same direction. Moreover, some rotifers species were more affected than others, thus showing certain preference for some rotifers species. Thereby, this parasite may be interfering in the distribution of rotifers population in Rio Grande Reservoir. This is the first report of this species for Brazil. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Parasite; Chytridiomycota; Rotifera; Zones. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100036 |
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| Registros recuperados: 119 | |
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