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Photoperiodism in the cabbage whitefly, Aleyrodes brassicae
Author(s) -
IHEAGWAM EMMANUEL UCHE
Publication year - 1977
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.1365-3032.1977.tb00099.x
Subject(s) - diapause , biology , photoperiodism , overwintering , whitefly , pupa , horticulture , botany , larva
. Reproductive diapause was induced in A. brassicae by short photo‐period at 15 and 20°C but was almost prevented at 25°C. The critical photoperiod was LD 153/4: 81/4 at 15°C, giving 60% diapause. Photoperiodic sensitivity was confined to the early immature stages. Food plant quality appeared not to influence the induction or prevention of diapause. Chilling facilitated diapause termination. Overwintering females brought into the laboratory as adults or pupae from the field from September to December took longer before laying their first eggs than females collected in January and February.