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Registros recuperados: 15
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A survey of the incidence of Nosema disease (Nosema apis Zander) of the honey bee in south Australia National Institute of Agronomic Research
Doull, Keith; Cellier, K.M..
A 2-year survey of the incidence cf nosema disease of the honey bee in South Australia bas shown that a spring peak of infection may be expected each year. The level of infection is at a minimum in midsummer and winter but a rise may occur in the autumn. It was considered that the disease, either in the form of a few infected bees or of spores on the combs, was present in all hives throughout the survey. Significant differences in the level of infection between hives in the same apiary suggested that there may be factors, varying in some way from hive to hive, which determine the level of infection within each hive. In view of the appreciable variation between hives it is evident that the incidence of the disease in individual hives was estimated with...
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; AUSTRALIA; NOSEMA APIS; INFECTIOUS DISEASE; ABEILLE DOMESTIQUE; INSECTE SOCIAL; AUSTRALIE; NOSEMA APIS; MALADIE INFECTIEUSE.
Ano: 1961 URL: http://hdl.handle.net/2174/479
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A theory of the causes of development of epizootics of nosema disease of the honey bee National Institute of Agronomic Research
Doull, Keith M..
A hypothesis is presented to explain the developments of epizootics of nosema disease of the honey bee, Apis mellifera Linnaeus. It is assumed that most hives contain some lightly infected carrier bees in which the numbers of the parasite increase very slowly. But under the influence of certain conditions the parasites within these bees increase in numbers very quickly, and, if other conditions are favorable, an epizootic of the disease will develop. A hypothetical course of development of an epizootic is described. It is suggested that the numbers of the parasite increase when the metabolism of infected bees is changed so as to change the environment of the intracellular parasites. Changes in the metabolism of infected bees are considered to be stress...
Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; NOSEMA; INFECTIOUS DISEASE; EPIZOOTICS; ABEILLE DOMESTIQUE; INSECTE SOCIAL; NOSEMA; MICROSPORIDIE; MALADIE INFECTIEUSE; EPIDEMIE.
Ano: 1961 URL: http://hdl.handle.net/2174/478
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Acute infection of bees with paralysis virus National Institute of Agronomic Research
Bailey, L.; Gibbs, J..
Acute bee paralysis virus (ABPV) occurs commonly in adult honey bees (Apis mellifera Linnaeus) in Britain. The amount of the virus in different bees differs, as does the proportion of infected bees in different colonies. No organ or part of a bee, or feces, was found to be invariably free of virus. Bees fed either by other bees that had been infected with pathogenic doses of ABPV, or with food containing up to 10(10) particles of ABPV, did not become obviously diseased but the virus content of their tissues temporarily increased. However, bees either fed with at least 10(11) ABPV particles each, or injected with at least 10(2) particles, became diseased and died, and their abnormal behavior was possibly attributable to the changes observed in their brains....
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; INFECTIOUS DISEASE; VIRUS; PARALYSIS; ABEILLE DOMESTIQUE; INSECTE SOCIAL; MALADIE VIRALE; PARALYSIE; VIRUS.
Ano: 1964 URL: http://hdl.handle.net/2174/471
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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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Electron microscopic investigation of sacbrood of the honey bee National Institute of Agronomic Research
Brcak, Jaroslav; Svoboda, Jaroslav; Kralik, Otto.
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; SACBROOD; VIRUS; INFECTIOUS DISEASE; ELECTRON MICROSCOPY; ABEILLE DOMESTIQUE; INSECTE SOCIAL; VIRUS DU COUVAIN SCCIFORME; MALADIE VIRALE; MICROSCOPIE ELECTRONIQUE.
Ano: 1963 URL: http://hdl.handle.net/2174/486
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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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Infectious diseases of the honeybee National Institute of Agronomic Research
Bailey, L..
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; INFECTIOUS DISEASE; ABEILLE DOMESTIQUE; INSECTE SOCIAL; MALADIE INFECTIEUSE.
Ano: 1959 URL: http://hdl.handle.net/2174/496
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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 control of nosema disease National Institute of Agronomic Research
Bailey, L..
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; NOSEMA; MICROSPORIDIA; INFECTIOUS DISEASE; CONTROL; ABEILLE DOMESTIQUE; INSECTE SOCIAL; NOSEMA; MICROSPORIDIE; MALADIE INFECTIEUSE; LUTTE.
Ano: 1954 URL: http://hdl.handle.net/2174/494
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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 gross and histological pathology of a hairless-black syndrome in the adult honey bee, Apis mellifera National Institute of Agronomic Research
Horvath, Roberta J.; Rothenbuhler, Walter C..
Twenty diseased and 17 control bees were studied grossly and histologically with respect to pathological manifestations of an adult bee disease (tentatively called hairless-black syndrome), which has not been clearly distinguished in the literature from several other diseases of adult bees. In a diseased bee as compared with a control, the abdomen was abnormally distended by an accumulation of unusually aqueous feces; the midgut was often white and translucent instead of brown; the lumen of the small intestinal portion of the hindgut contained an increased amount of basophilic material, probably intestinal flora; the wall of the small intestine had large lesions and necrotic appearing areas in about half of the cases; the cytoplasm of the small intestinal...
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; ADULT; INFECTIOUS DISEASE; HISTOLOGY; HAIRLESS-BLACK SYNDROME; VIRUS; CHRONIC BEE PARALYSIS; ABEILLE DOMESTIQUE; INSECTE SOCIAL; ADULTE; MALADIE INFECTIEUSE; HISTOLOGIE; VIRUS; PARALYSIE CHRONIQUE.
Ano: 1972 URL: http://hdl.handle.net/2174/344
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The gross and histological pathology of a hairless-black syndrome in the adult honey bee, Apis mellifera National Institute of Agronomic Research
Horvath, Roberta J.; Rothenbuhler, Walter C..
Twenty diseased and 17 control bees were studied grossly and histologically with respect to pathological manifestations of an adult bee disease (tentatively called hairless-black syndrome), which has not been clearly distinguished in the literature from several other diseases of adult bees. In a diseased bee as compared with a control, the abdomen was abnormally distended by an accumulation of unusually aqueous feces; the midgut was often white and translucent instead of brown; the lumen of the small intestinal portion of the hindgut contained an increased amount of basophilic material, probably intestinal flora; the wall of the small intestine had large lesions and necrotic appearing areas in about half of the cases; the cytoplasm of the small intestinal...
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; ADULT; INFECTIOUS DISEASE; HISTOLOGY; HAIRLESS-BLACK SYNDROME; VIRUS; CHRONIC BEE PARALYSIS; ABEILLE DOMESTIQUE; INSECTE SOCIAL; ADULTE; MALADIE INFECTIEUSE; HISTOLOGIE; VIRUS; PARALYSIE CHRONIQUE.
Ano: 1972 URL: http://hdl.handle.net/2174/344
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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 natural mechanism of suppression of Nosema apis Zander in enzootically infected colonies of the honey bee, Apis mellifera Linnaeus National Institute of Agronomic Research
Bailey, L..
Honey bees, artificially infected with Nosema apis Zander and introduced into an enzootically infected colony in summer when infection was naturally diminishing, were all infected and developed similar numbers of spores to those in naturally infected bees in spring when infection was high. This, and other evidence, suggests infection is not naturally suppressed by increased environmental temperature, but by reduction of infective fecal matter of the bees, which do not transmit infection to young individuals in summer.
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; NOSEMA APIS; MICROSPORIDIA; INFECTIOUS DISEASE; NATURAL SUPPRESSION; ABEILLE DOMESTIQUE; INSECTE SOCIAL; NOSEMA APIS; MICROSPORIDIE; MALADIE INFECTIEUSE; SUPPRESSION NATURELLE.
Ano: 1959 URL: http://hdl.handle.net/2174/492
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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: 15
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