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The identification of an aphid juvenile hormone, and its titre in relation to photoperiod
Author(s) -
HARDIE JIM,
BAKER FRED C.,
JAMIESON GENE C.,
LEES ANTHONY D.,
SCHOOLEY DAVID A.
Publication year - 1985
Publication title -
physiological entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 57
eISSN - 1365-3032
pISSN - 0307-6962
DOI - 10.1111/j.1365-3032.1985.tb00050.x
Subject(s) - biology , aphid , juvenile hormone , aphis , aphididae , photoperiodism , insect , parthenogenesis , context (archaeology) , botany , juvenile , homoptera , zoology , genetics , pest analysis , embryo , paleontology
. Whole body extractions from larval and adult apterous forms of Megoura viciae , and from adult Aphis fabae , were analysed for the known insect juvenile hormones (JHs) by a gas chromatography‐mass spectrometric method. Low levels of JH III were detected in both aphid species, the first identification of a juvenile hormone from an homopteran insect. Although the mean titre in adult M. viciae is higher in long‐day than in short‐day reared insects (0.12±0.03 v. 0.04±0.01 ng/g), titres were variable and measurements overlapped. The results are discussed in the context of the hormonal control of aphid polymorphism and the question of identity of homopteran and hemipteran JH.