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Effects of sustained immobilisation on aphids
Author(s) -
BERGER P. H.,
ZEYEN R. J.
Publication year - 1987
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1987.tb01451.x
Subject(s) - myzus persicae , biology , carbon dioxide , aphididae , nitrogen , argon , zoology , aphid , horticulture , botany , homoptera , pest analysis , chemistry , ecology , organic chemistry
SUMMARY Immobilisation of aphids of three species, Schizaphis graminum, Myzus persicae and Dactynotus ambrosiae , was accomplished using low temperature (6 ± 1°C; or nitrogen (N 2 ), argon (Ar), or carbon dioxide (CO 2 ) gases at 25°C for 1,3,6, or 24 h. Mortality was recorded and also times until treated aphids first walked or probed. Cold immobilisation caused least mortality and allowed rapid recovery of walking and probing abilities. CO 2 treatment, even when accompanied by cyclic administration of bottled air, caused excessive mortality when used beyond 6 h, and long recovery times. After 24 h immobilisation with CO 2 aphids seldom walked or probed. N 2 or Ar gases, when administered with alternating cycles of bottled air, produced a nontoxic, hypoxic immobilisation from which aphids recovered fairly rapidly to walk and probe, apparently normally.