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Fungous Diseases of the Honeybee (Classic Reprint)

  • Kartonierter Einband
  • 72 Seiten
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Excerpt from Fungous Diseases of the HoneybeeThe study of diseases of bees due to fungi has been much later in its development th... Weiterlesen
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Excerpt from Fungous Diseases of the Honeybee

The study of diseases of bees due to fungi has been much later in its development than the study of those caused by bacteria. Much the greater share of the attention of investigators of bee diseases has been given to the two serious bacterial brood diseases, American foul brood and European foulbrood, caused respectively by B lemme and B. Pluton. In America only two reports are on record of diseases of bees and their brood caused by hyphomycetous fungi. In 1896 Howard of Texas, described a new brood disease which he called pickled brood or white fungus, caused by a species of Aspergillus to which he gave the name Aspergillus Two years later he described (15) the same disease as occurring in both pupae and adult bees and stated his belief that this disease had been mistakenly diagnosed by beekeepers as paralysis.

In both reports Howard gives descriptions and illustrations of the disease, which he called pickled brood or white fungus, which are more readily applicable to the disease known as sacbrood than to those caused by fungi. He ascribed this disease to the pathogenic Aspergillus, A. Pollini. The dead larvae are described as at first white and watery, later becoming black and swollen, and finally dry ing down to black scales. In no case was the fungus, which Howard assumes to be the cause of the disease, observed on the larvae, and isolations of the organism were not made. In adult bees the disease is described as causing black, shiny, apparently frozen abdomens.

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Produktinformationen

Titel: Fungous Diseases of the Honeybee (Classic Reprint)
Autor:
EAN: 9781527914858
ISBN: 1527914852
Format: Kartonierter Einband
Anzahl Seiten: 72
Gewicht: 111g
Größe: H229mm x B152mm x T4mm
Jahr: 2017

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