[Text] / E.A. Steinhaus, J.P. Dineen. - Berkeley : University of California, 1959. - 171-183 p. : рис. - (Journal of Insect Pathology ; vol. 1, N 2). - eng. - Библиогр. в конце ст. - 0.05 р.
Аннотация: A cytoplasmic polyhedrosis has been found affecting the mid-gut of the alfalfa caterpillar, Colias philodice eurytheme Boisduval. Externally, the diseased larvae exhibit a yellowish-green color over the mid-gut region. Upon dissection, the mid-gut is seen to have assumed a yellowish
opaque appearance. Histological sections show the cytoplasm of the gut cells to contain polyhedra of two general size groups. Electron micrographs of alkaline-dissolved polyhedra reveal the presence of numerous spherical particles presumed to be the virus. The diseased larvae were originally observed during laboratory experiments in specimens subjected to the stress of crowding; but similarly diseased caterpillars have also been collected from alfalfa fields
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