In:
The Canadian Entomologist, Cambridge University Press (CUP), Vol. 106, No. 7 ( 1974-07), p. 701-709
Abstract:
Esterases present in the hemolymph of last instar Heliothis zea (Boddie) were separated by polyacrylamide gel electrophoresis. Four systems, all polymorphic, were observed. One system, Est-II, appeared especially suited for the study of some of the important population processes of this species; these include host–plant relations, migration, and the effects of environmental pressures such as pesticides on the species. Est-II was classified as a carboxylesterase, being sensitive only to organophosphate inhibitors. Dichlorvos at 10 −5 M completely inhibited Est-II activity. Populations collected from corn from Tifton, Ga., and in two locations in Illinois, at approximately the same time were very similar genetically when compared on the basis of Est-II allele frequencies. A population collected from leguminous hosts in Tifton, Ga., at the same time as the above three populations was different genetically. Est-II c , an allele normally rare or absent in the populations studied, was present at a high frequency in one Urbana population collection. Est-II c may be useful in studying the long-range dispersal of H . zea .
Type of Medium:
Online Resource
ISSN:
0008-347X
,
1918-3240
Language:
English
Publisher:
Cambridge University Press (CUP)
Publication Date:
1974
detail.hit.zdb_id:
2119167-0
detail.hit.zdb_id:
2472093-8
SSG:
12
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