ミツバチに発生したChalk broodから分離したAscosphaera apis

高鳥 浩介; 田中 一郎

doi:10.2508/chikusan.53.89

Ascosphaera apis Isolated from Chalk Brood in Honey Bees

Kosuke TAKATORI, Ichiro TANAKA

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JOURNAL FREE ACCESS

1982 Volume 53 Issue 2 Pages 89-92

DOI https://doi.org/10.2508/chikusan.53.89

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Published: February 25, 1982 Received: June 08, 1981 Available on J-STAGE: March 10, 2008 Accepted: - Advance online publication: - Revised: -
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Date of correction: March 10, 2008 Reason for correction: - Correction: PDF FILE Details: -

Date of correction: March 10, 2008 Reason for correction: - Correction: PDF FILE Details: -

Date of correction: March 10, 2008 Reason for correction: - Correction: ABSTRACT Details: Wrong : Chalk brood in honey bees was found in Japan. The causative fungus,
Ascosphaera apis, was isolated from the dead and discolored larvae and pupae of honey
bees collected from Gifu in 1978. This finding was the first in Japan. In mycological
studies, colonies on MY 20 agar were spreading broadly with deeply floccose, surface
hyaline to dark gray. The odor was conspicuously sour. Spore cysts were produced in
a fairly dense layer. According to microscopic observations, spore cysts were globose,
75-100μm in diam., black to dark brown and glabrous. Spore balls were 11-17μm
and spherical to subglobose. Ascospores were hyaline, one-celled, smooth, ellipsoidal
and 3.0-4.0×1.0-2.5μm. Conidial structure was not produced. With natural occur-
rence of chalk brood, the problem of prevention for the fungus, A. apis, was pointed
out.
Right : Chalk brood in honey bees was found in Japan. The causative fungus, Ascosphaera apis, was isolated from the dead and discolored larvae and pupae of honey bees collected from Gifu in 1978. This finding was the first in Japan. In mycological studies, colonies on MY 20 agar were spreading broadly with deeply floccose, surface hyaline to dark gray. The odor was conspicuously sour. Spore cysts were produced in a fairly dense layer. According to microscopic observations, spore cysts were globose, 75-100μm in diam., black to dark brown and glabrous. Spore balls were 11-17μm and spherical to subglobose. Ascospores were hyaline, one-celled, smooth, ellipsoidal and 3.0-4.0×1.0-2.5μm. Conidial structure was not produced. With natural occurrence of chalk brood, the problem of prevention for the fungus, A. apis, was pointed out.

Date of correction: March 10, 2008 Reason for correction: - Correction: PDF FILE Details: -

Abstract

Chalk brood in honey bees was found in Japan. The causative fungus, Ascosphaera apis, was isolated from the dead and discolored larvae and pupae of honey bees collected from Gifu in 1978. This finding was the first in Japan. In mycological studies, colonies on MY 20 agar were spreading broadly with deeply floccose, surface hyaline to dark gray. The odor was conspicuously sour. Spore cysts were produced in a fairly dense layer. According to microscopic observations, spore cysts were globose, 75-100μm in diam., black to dark brown and glabrous. Spore balls were 11-17μm and spherical to subglobose. Ascospores were hyaline, one-celled, smooth, ellipsoidal and 3.0-4.0×1.0-2.5μm. Conidial structure was not produced. With natural occurrence of chalk brood, the problem of prevention for the fungus, A. apis, was pointed out.

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