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| Registros recuperados: 35 | |
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| Dodin, A; Dosso, M; Guillou, M. |
| There exists no biochemical test allowing to define the pathogenicity of a bacterium, still less for a Vibrionaceae. Two essential characters are to be retained to hold responsible an isolated germ, for an illness: 1) the binding factor, the identification is difficult but a double diffusion of agar should simplify the method; 2) the search for the choleric toxin or a common part of the choleric toxin (toxin LT or ST of E. coli ). Here again, simplified techniques may be used. The acquirement of a plasmid responsible for the binding factor or for the toxin production of the non-pathogenic Vibrionaceae in the origin of certain epidemic diseases in France and in the world. Frequently, epidemics due to common germs (Aeromonas hydrophila of Africa) lead to... |
| Tipo: Text |
Palavras-chave: Aeromonas hydrophila; Vibrionaceae; Bacteria; Ecology; Microorganisms; Hosts; Bacterial diseases; Pathogenic bacteria. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/acte-999.pdf |
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| Thomas, B.; Ollevier, F.P.. |
| The host specificity and population dynamics of <i>Anguillicola crassus</i> in a number of paratenic hosts were investigated. Various freshwater fish species were sampled monthly (March 1990 to March 1991) from the Kolenhaven (Albertcanal, Genk, Belgium) and examined for L<sub>3</sub>-larvae of <i>Anguillicola crassus</i>. Sixteen species were found to be infected: all the physoclist species examined (<i>Gymnocephalus cernua, Lepomis gibbosus, Ictalurus nebulosus, Stizostedion lucioperca, Gasterosteus aculeatus, Oreochromis niloticus</i> and <i>Perca fluviatilis</i>) and those physostome species of which a sufficient number could be examined to detect the infection (<i>Gobio gobio, Leuciscus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abundance; Endoparasites; Freshwater fish; Hosts; Introduced species; Parasites; Population dynamics; Specificity; Swim bladder; Anguillicola crassus; Pisces [Fish]. |
| Ano: 1992 |
URL: http://www.vliz.be/imisdocs/publications/299068.pdf |
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| SKORUPA, L. A.; CESNIK, R.. |
| A cochonilha Orthezia praelonga, também conhecida como "piolho branco", um importante inseto associado à cultura do Citrus no Brasil, é responsável por prejuízos na cultura em vários estados brasileiros (Cassino et al., 1991). Os danos causados pelo inseto estão relacionados à sucção da seiva, bem como a inoculação de substâncias toxicogênicas que interferem no desenvolvimento das plantas, ao mesmo tempo em que promovem a queda das folhas e dos frutos. A proliferação do fungo Capnodium sp. ("fumagina") nas excretas da cochonilha, depositadas sobre as partes vegetativas e reprodutivas das plantas, também é considerada um fato danoso, uma vez que compromete a eficiência dos processos respiratórios e fotossintéticos da planta (Lima, 1981). Além do Citrus, o... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Brasil; Citro; Citros; Cultura; Hospedeira; Identification; Limeira; Mogi Mirim; Mogi-Mirim; Orthezia praelonga Douglas; Piolho branco; Planta daninha; Plantas invasoras; Sao Paulo; Cochonilha; Cochonilha Branca; Erva Daninha; Espécie; Fruta Cítrica; Hospedeiro; Identificação; Inseto; Lima; Orthezia Praelonga; Planta; Planta Hospedeira; Pomar; Praga; Praga de Planta; Brazil; Citrus; Citrus fruits; Hosts; Pests; Weeds. |
| Ano: 1999 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1118971 |
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| Tarer, V.; Marques, A.; Raymond, J. Ch.. |
| Un échantillonnage de poissons parasités (Diplodus puntazzo) en provenance d’une firme aquacole située au Sud-est de la Corse (Ouest méditerranéen) montre une infestation due à un Myxidium leei. Le parasite envahit l’épithélium intestinal causant amaigrissement du poisson et une forte mortalité. Les spécimens de plus de 16 cm de longueur totale étaient significativement moins infestés. Toutefois, l’infestation ne montre pas de différence significative entre mâles et femelles quelle que soit la taille des spécimens. Quelques paramètres hématologiques ont été utilisés pour montrer le rôle du parasite dans cette maladie de poissons et statuer sur l’interaction hôte-parasite. |
| Tipo: Journal Contribution |
Palavras-chave: Fish diseases; Interactions; Parasitic diseases; Hosts; Aquaculture; Parasitism; Fish culture. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/4291 |
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| Joachim-Bravo,Iara S.; Fernandes,Odair A.; Bortoli,Sérgio A.; Zucoloto,Fernando S.. |
| The influence of two factors, age and previous experience, on the oviposition hierarchy preference of Ceratitis capitata (Wiedemann, 1824) females was studied. Two populations were analyzed: one reared in laboratory during 17 years and the other captured in nature. In the first experiment the oviposition preference for four fruits, papaya, orange, banana and apple was tested at the beginning of oviposition period and 20 days past. The results showed that the wild females as much the laboratory ones had an oviposition preference hierarchy at the beginning of peak period of oviposition. However this hierarchic preference disappeared in a later phase of life. In the second experiment the females were previously exposed to fruits of different hierarchic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Medfly; Hosts; Behavior; Oviposition; Ceratitis. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000200014 |
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| Poltronieri,Luiz S.; Duarte,Maria L. R.; Alfenas,Acelino C.; Trindade,Dinaldo R.; Albuquerque,Fernando C.. |
| When grown in monoculture, Antilles cherry (Malpighia glabra) plants have been affected by diseases which cause fruits malformation and spotting, reducing their value for market. From 1999 on, three new diseases characterised by leaf spot and fall of leaves have been observed in plantations located in Santa Izabel do Pará and Igarapé Açu counties. After isolation and pathogenicity tests on leaves of Antilles cherry plants, the isolates were identified as Calonectria ilicicola (anamorph: Cylindrocladium parasiticum) which causes large leaf spots reaching up to 7 cm long, brownish in colour, coalescent, scorching large leaf areas and causing 50% of leaf fall; Corynespora cassiicola, which provokes irregularly shaped, necrotic leaf spots with dark brown... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: New diseases; Corynespora cassiicola; Calonectria ilicicola; Myrothecium roridum; Hosts. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582003000400013 |
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| Arzua,Márcia; Onofrio,Valeria C.; Barros-Battesti,Darci M.. |
| The tick collection of the Museu de Historia Natural Capão da Imbuia was first sorted in the end of the 80's, and a list of specimens was published in 1992. During the last ten years, the collection has grown substantially and became the depository collection for type-specimens. The collection is the most regional representative depository of ticks from the State of Paraná, and it is one of the four largest Brazilian collections in number of specimens. All material was revised, and the data were computerized and catalogued in cards. To date, the collection includes 504 vials, with 2,073 specimens, belonging to 25 species and six genera of the families Argasidae and Ixodidae. The ticks were collected in regional and state parks and in green areas from 60... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Argasidae; Hosts; Ixodidae; Regional ixodofauna. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000300015 |
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| Registros recuperados: 35 | |
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