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| Registros recuperados: 113 | |
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| Laffargue, Pascal; Baudouin, G; Sasal, P; Arnaud, Christophe; Begout, Marie-laure; Lagardere, Francoise. |
| Cysts of metacercariae were obtained on 2 dates from juvenile sole Solea solea sea-sampled in an area of mussel cultivation (Pertuis Charentais, Bay of Biscay, France). An initial assessment of parasite genus and infestation level was based on 192 cysts extracted from 2 fish samples, taken in August (n = 20) and December 2000 (n = 14). Our results confirmed the sole as second intermediate host of bucephalid trematodes of the genus Prosorhynchus, which has not previously been noticed in Atlantic stocks. Prevalence, ca. 65% on both dates, indicated an substantial infestation of these small fish, with a mean abundance of parasites increasing from August (3.3 +/- 1.1) to December (8.1 +/- 3.4). Cysts were localised in all body parts of the host, and... |
| Tipo: Text |
Palavras-chave: Flatfish; Soleidae; Parasite; Platyhelminthes; Bucephalidae; Nursery suitability. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/00000/10797/7576.pdf |
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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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| Audemard, Corinne; Le Roux, Frédérique; Sauriau, Pierre-guy; Sautour, Benoît; Combes, C.; Coustau, C.; Blachier, Philippe; Berthe, Franck. |
| Over the last thirty years, the French production of flat oyster Ostrea edulis dropped from15,000 tons/year to 1,500 tons. Marteilia refringens, a parasite of the flat oyster's digestive gland, is partly responsible for this drop. The fight against this pathogen agent requires a better knowledge of its parasitic cycle. The main hypothesis is the existence of a heteroxenous cycle, that is to say a cycle involving more than one host. However, for thirty years this or these hosts have not been found, and the cycle of Marteilia refringens remains unknown. |
| Tipo: Text |
Palavras-chave: Claires ostréicoles; Parasite; Détection; Biologie moléculaire; Marteilia refringens. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/acte-3272.pdf |
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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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| Comps, Michel. |
| Following a number of mortalities reported on the flat oyster farms of the Ile Tudy in June 1979, a Protiste, a parasite then unknown in France, was found in the sick oysters. Located mainly in the connective tissue and the branchial epithelium, this parasite is associated with tissue damage. It can be either of a free type or of an intracellular type, both corresponding to small size cells (2 to 3 µm) and displaying, next to their core, one or two mitochondrion and some structured electron-dense particles. Moreover, different mitosis stages, with nuclear membrane persistence, have been observed. These ultrastructural characteristics show some similarities and differences with the Haplosporidies and Marteilia groups. |
| Tipo: Text |
Palavras-chave: Mortalités; Parasite; Ostreae edulis; Huître plate. |
| Ano: 1982 |
URL: http://archimer.ifremer.fr/doc/1982/acte-6155.PDF |
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| BELLÉ,C.; KASPARY,T.E.; KUHN,P.R.; SCHMITT,J.; LIMA-MEDINA,I.. |
| ABSTRACT Weeds can be hosts of root-lesion nematode (Pratylenchus spp.), maintaining or increasing their population in the soil. The objective of this study was to evaluate the reaction of 25 weeds species to the nematode Pratylenchus zeae. The weed plants were individually inoculated with 1,000 individuals of P. zeae and maintained in a greenhouse for 90 days. After this period, eggs and nematodes were extracted, quantified, and the reproduction factor (RF = final population/initial population) was calculated. All tested weeds were susceptible (RF>1) to P. zeae, and the species Brachiaria decumbens, Rhynchelytrum repens, Digitaria insularis, D. horizontalis, B. brizantha were the most susceptible to this parasite. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Invasive plants; Susceptibility; Lesion nematode; Parasite. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100203 |
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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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| Registros recuperados: 113 | |
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