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Registros recuperados: 7
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Ætiology of european foul brood ; a disease of the larval honey-bee National Institute of Agronomic Research
Bailey, L..
THE cause of European foul brood was originally thought to be Bacillus alvei or a mixture of B. alvei and Streptococcus apis. The causative organism was later named and described by White as Bacillus pluton, a lanceolate Gram-positive bacterium. This organism is the first of several which have been found to appear in diseased larvæ. However, White and others failed to culture B. pluton in vitro and it was afterwards considered to be a dissociant form of Bacillus alvei, of Bacterium eurydice, or of both. Others have maintained that B. pluton is a separate organism. It has been pointed out that Streptococcus pluton would be a more suitable designation than Bacillus pluton both on morphological grounds and in the absence of evidence that it forms spores. For...
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; LARVAE; EUROPEAN FOULBROOD; INFECTIOUS DISEASE; ETIOLOGY; ABEILLE DOMESTIQUE; INSECTE SOCIAL; LARVE; LOQUE EUROPEENNE; MALADIE INFECTIEUSE; ETIOLOGIE.
Ano: 1956 URL: http://hdl.handle.net/2174/497
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European foul brood : a disease of the larval honeybee (Apis mellifera L.) caused by a combination of streptococcus pluton (Bacillus pluton White) and Bacterium eurydice White National Institute of Agronomic Research
Bailey, L..
Result of preliminary experiments have shown that European foul brood disease of the larval honeybee can be caused in bee colonies by spraying their brood with suspensions of Streptococcus pluton (Bacillus pluton White) and Bacterium eurydice White if the two organisms are grown together in mixed anaerobic culture ; fifth subcultures of a mixed culture were usually virulent, although virulence diminished rapidly after further sub-cultivation. It was not possible to cause the disease by simultaneous inoculation with separate cultures of the two organisms. As there is a tendency for colonies of S. pluton and B. eurydice to grow within, or upon, each other on agar in anaerobic cultures, the separate cultures of each organism were subcultured five times to try...
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; LARVAE; EUROPEAN FOULBROOD; INFECTIOUS DISEASE; STREPTOCOCCUS PLUTON; BACTERIUM EURYDICE; ABEILLE DOMESTIQUE; INSECTE SOCIAL; LARVE; LOQUE EUROPEENNE; MALADIE INFECTIEUSE; STREPTOCOCCUS PLUTON; BACTERIUM EURYDICE.
Ano: 1957 URL: http://hdl.handle.net/2174/495
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European foulbrood National Institute of Agronomic Research
Bailey, L..
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; EUROPEAN FOULBROOD; ABEILLE DOMESTIQUE; INSECTE SOCIAL; LOQUE EUROPEENNE.
Ano: 1961 URL: http://hdl.handle.net/2174/508
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The cause of european foul brood National Institute of Agronomic Research
Bailey, L..
Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; EUROPEAN FOULBROOD; INFECTIOUS DISEASE; ABEILLE DOMESTIQUE; INSECTE SOCIAL; LOQUE EUROPEENNE; MALADIE INFECTIEUSE.
Ano: 1957 URL: http://hdl.handle.net/2174/491
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The epizootiology of european foulbrood of the larval honey bee, Apis mellifera Linnaeus National Institute of Agronomic Research
Bailey, L..
Larvae, artificially infected when 0 to 1 day old with Streptococcus pluton (White) and placed in colonies, were usually ejected by adult bees. Ejection was delayed from colonies deprived either of unsealed brood or their queen, or which were reinforced with adult bees. The feces of surviving larvae whose weight was subnormal, contained many viable cells of S. pluton. Colonies reinforced with unsealed brood removed more infected larvae than usual. It is concluded that infected larvae are ejected when larval food is merely adequate, as it may be when a colony is growing rapidly ; and they are kept when larval food is more abundant, as it may be when brood rearing is retarded. Natural outbreaks of disease occurred when brood-rearing, in colonies heavily...
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; LARVAE; EUROPEAN FOULBROOD; INFECTIOUS DISEASE; ABEILLE DOMESTIQUE; INSECTE SOCIAL; LARVE; LOQUE EUROPEENNE; MALADIE INFECTIEUSE.
Ano: 1960 URL: http://hdl.handle.net/2174/493
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The isolation and cultural characteristics of streptococcus pluton and further observations on bacterium eurydice National Institute of Agronomic Research
Bailey, L..
An account is given of the development of a reliable method for the isolation of Streptococcus pluton (Bacillus pluton White), an organism associated with European foul-brood disease of the larval honeybee. S. pluton, isolated as an anaerobe, may be trained to grow as an aerobe in rod form. Its principal anaerobic growth requirements are a low molar ratio of Na: K, high inorganic phosphate concentration, glucose or fructose, and undetermined factors provided by yeast extract. Peptones are harmful to growth. Aerobic growth has no very critical requirements other than glucose, fructose or sucrose. Bacterium eurydice White which, together with S. pluton, causes European foul-brood disease grows well anaerobically on a yeast extract + glucose + fructose...
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; LARVAE; EUROPEAN FOULBROOD; INFECTIOUS DISEASE; STREPTOCOCCUS PLUTON; BACTERIUM EURYDICE; ISOLATION; CULTURE; ABEILLE DOMESTIQUE; INSECTE SOCIAL; LARVE; LOQUE EUROPEENNE; MALADIE INFECTIEUSE; STREPTOCOCCUS PLUTON; BACTERIUM EURYDICE; ISOLATION; CULTURE.
Ano: 1957 URL: http://hdl.handle.net/2174/500
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The pathogenicity for honey-bee larvae of microorganisms associated with european foulbrood National Institute of Agronomic Research
Bailey, L..
Tests made on larvae in normal bee colonies with pure cultures of Streptococcus pluton (White), Streptococcus faecalis Andrews and Horder, and Bacillus alvei Cheshire and Cheyne, three bacterial species commonly associated with European foulbrood (EFB), showed that S. pluton was the natural prirnary etiological agent. These results, together with other recent work, indicate that S. pluton is the cause of EFB throughout the world. Of the other associated bacterial species, Bacterium eurydice White, which is the most commnon, and S. faecalis probably have supplementary pathogenic effects. Bacillus alvei and other less common bacilli are saprophytes of the dead larvae.
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; LARVAE; EUROPEAN FOULBROOD; INFECTIOUS DISEASE; MICROORGANISM; BACTERIA; SAPROPHYTE; STREPTOCOCCUS PLUTON; STREPTOCOCCUS FAECALIS; BACILLUS ALVEI; BACTERIUM EURIDYCE; PATHOGENICITY; ABEILLE DOMESTIQUE; INSECTE SOCIAL; LARVE; MALADIE NOIRE; PARALYSIE CHRONIQUE; MALADIE INFECTIEUSE; MICROORGANISME; BACTERIE; SAPROPHYTE; STREPTOCOCCUS PLUTON; STREPTOCOCCUS FAECALIS; BACILLUS ALVEI; BACTERIUM EURIDYCE; PATHOGENICITE; LOQUE EUROPEENNE.
Ano: 1963 URL: http://hdl.handle.net/2174/370
Registros recuperados: 7
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