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Juvenile Hormone and host‐plant colonization by the black bean aphid, Aphis fabae
Author(s) -
HARDIE JIM,
MALLORY ANNE C. L.,
QUASHIEWILLIAMS CAROL A.
Publication year - 1990
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.1365-3032.1990.tb00520.x
Subject(s) - biology , aphis , aphid , colonization , juvenile , host (biology) , ecdysis , juvenile hormone , hormone , alate , botany , zoology , endocrinology , homoptera , moulting , ecology , larva , aphididae , pest analysis
Host‐plant colonization by winged, summer forms of Aphis fabae Scop, involves the resumption of embryogenesis and larviposition, leading eventually to flight muscle degeneration. Topical application of Juvenile Hormone I to young adults which (a) had access to the host plant, (b) were starved, (c) were starved and treated with precocene III, or (d) were decapitated shortly after the final ecdysis suggests that embryogenesis and flight muscle histolysis may be stimulated by an increase in Juvenile Hormone titres after settling. The duration of the pre‐reproductive period and the initial reproductive rate were not significantly affected, possibly because other neuroendocrine factors are involved in parturition.