Life Cycle of Ascosphaera Apis (Pericystis Apis)

Spiltoir, Charles F.

doi:10.1002/j.1537-2197.1955.tb11154.x

Cited by 52 publications

(13 citation statements)

References 8 publications

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“…Chalkbrood, the most common fungal bee brood disease, is caused primarily by the fungus Ascosphaera apis (Maassen ex Claussen) Olive and Spiltoir (Spiltoir, 1955). It was recognized in the honey bee in the early 20th Century (Maassen, 1913).…”

Section: Chalkbroodmentioning

confidence: 99%

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Standard methods for fungal brood disease research

Jensen

Aronstein²,

Flores

et al. 2013

Journal of Apicultural Research

144

130

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Summary Chalkbrood and stonebrood are two fungal diseases associated with honey bee brood. Chalkbrood, caused by Ascosphaera apis, is a common and widespread disease that can result in severe reduction of emerging worker bees and thus overall colony productivity. Stonebrood is caused by Aspergillus spp. that are rarely observed, so the impact on colony health is not very well understood. A major concern with the presence of Aspergillus in honey bees is the production of airborne conidia, which can lead to allergic bronchopulmonary aspergillosis, pulmonary aspergilloma, or even invasive aspergillosis in lung tissues upon inhalation by humans. In the current chapter we describe the honey bee disease symptoms of these fungal pathogens. In addition, we provide research methodologies and protocols for isolating and culturing, in vivo and in vitro assays that are commonly used to study these host pathogen interactions. We give guidelines on the preferred methods used in current research and the application of molecular techniques. We have added photographs, drawings and illustrations to assist bee-extension personnel and bee scientists in the control of these two diseases.

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Section: Chalkbroodmentioning

confidence: 99%

“…Ascosphaera apis has septate hyphae (2.5 – 8.0 µm in diameter) which show pronounced dichotomous branching (Spiltoir, 1955; Skou, 1988). As mentioned above, this is a heterothallic fungus with two mating types and only when + and − strains are grown in close proximity does the formation of fruiting bodies occur.…”

Section: Chalkbroodmentioning

confidence: 99%

Standard methods for fungal brood disease research

Jensen

Aronstein²,

Flores

et al. 2013

Journal of Apicultural Research

144

130

View full text Add to dashboard Cite

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“…A spore ball is a compact aggregation of spores formed by groups of asci that are united by a single membrane [12]. The membrane surrounding a spore ball disintegrates and only remnants of it are sometimes observed in mature spore cysts [5].…”

Section: Introductionmentioning

confidence: 99%

Ascosphaera callicarpa, a New Species of Bee-Loving Fungus, with a Key to the Genus for Europe

2013

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We studied the bee specialist fungus Ascosphaera in wild solitary bees to investigate the diversity of the genus in nature and the ecology of these fungi with their bee hosts. A new morphologically distinctive species was discovered which also has a unique nrITS sequence. This new species, here named Ascosphaera callicarpa, is common on the larval feces of the solitary bee Chelostoma florisomne which nests in the Phragmites reeds of thatched roofs in Europe. Because collections of Ascosphaera from wild bees are scarce and because little is known about the ecology and distribution of the majority of the species in the genus, a key to the species thus far reported for Europe is included.

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“…AFB causes a decline in honeybee population and honey production and can kill colonies if left untreated because the spores remain infectious for more than 35 years and it makes the control of AFB disease very difficult (Hasemann ). The most common fungal bee disease, chalkbrood, is caused by A. apis (Spilotoir ). This fungal disease infects young honeybee brood, with one to four larval instars being most susceptible (De Jong ; Gilliam et al .…”

Section: Introductionmentioning

confidence: 99%