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HEMOGRAMS OF SELECTED STAGES OF THE SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIDOPTERA: TORTRICIDAE)

Published online by Cambridge University Press:  31 May 2012

Gary B. Dunphy  and
Richard A. Nolan
Gary B. Dunphy
Affiliation:
Department of Biology, Memorial University of Newfoundland, St. John's A1B 3X9
Richard A. Nolan
Affiliation:
Department of Biology, Memorial University of Newfoundland, St. John's A1B 3X9
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Abstract

Five types of hemocytes (plasmatocytes, granular cells, spherule cells, oenocytoids, and prohemocytes) were identified in the larval, prepupal, and pupal stages of the spruce budworm, Choristoneura fumiferana (Clem.). Hemocyte numbers (total hemocyte counts and absolute hemocyte counts) increased during larval development. The absolute counts were greater in female larvae than in the male larvae during the fourth instar but were higher in the males during the fifth and sixth instars. Hemocyte numbers peaked in the prepupal stage in females and in the early pupal stage in males. The plasmatocytes and granular cells were the predominant hemocytes in both sexes. The plasmatocytes decreased and the granular cells increased throughout larval development of both sexes. There were more plasmatocytes in the males than in the females in all stages of development. There were more granular cells in the males than the females until the sixth instar when the reverse occurred.

Type
Articles
Information
The Canadian Entomologist , Volume 112 , Issue 5 , 01 May 1980 , pp. 443 - 450
Copyright
Copyright © Entomological Society of Canada 1980

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