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Appl Environ Microbiol. 1973 July; 26(1): 72-77
Copyright © 1973 American Society for Microbiology. All Rights Reserved.

Cations in Hemolymph and Alimentary Tract Tissues of Healthy and Milky Diseased European Chafer (Amphimallon majalis) Larvae1

K. H. Steinkraus, C. C. Field, M. C. Kochansky, M. E. Kaegebein and H. Tashiro

1 Cornell University, New York State Agricultural Experiment Station, Geneva, New York 14456

ABSTRACT

A study was made of certain cations present in hemolymph and alimentary tract tissues of healthy and diseased European chafer larvae and the spores of Bacillus popilliae collected from diseased hemolymph. The major ions found in the hemolymph, in order of decreasing abundance, were potassium, magnesium, sodium, and calcium. Hemolymph of diseased larvae contained relatively higher concentrations of sodium, potassium, magnesium, iron, and zinc than hemolymph of healthy larvae. Concomitantly, the concentrations of ions were lower in the mid-gut and anterior intestinal tissues of diseased larvae. Only sodium decreased slightly in the diseased tissues of the rectum and rectal sac; other ions remained unchanged or increased. Little or no manganese or copper was detected in the hemolymph or tissues. The major cations of spores of B. popilliae were sodium, calcium, and magnesium. Small amounts of potassium, manganese, copper, iron, and zinc were detected in the spores. Based on calcium and dipicolinic acid determinations of the spores, sufficient calcium was found to allow for the formation of calcium dipicolinate in the expected concentrations.

FOOTNOTES

1 Approved by the Director of the New York State Agricultural Experiment Station as Journal Paper no. 1996.

Appl Environ Microbiol. 1973 July; 26(1): 72-77
Copyright © 1973 American Society for Microbiology. All Rights Reserved.





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