Control of Diapause in a "Monovoltine" Insect, Lygaeus Equestris (Heteroptera)
- 1 January 1981
- Vol. 36 (1) , 68-74
- https://doi.org/10.2307/3544381
Abstract
L. equestris (L.) previously thought to be strictly monovoltine in Sweden, may in certain years with unusually sunny weather initiate a partial 2nd generation. At high temperatures and photoperiods of about 20 h or more, L. equestris develops without a reproductive diapause. Adults, and to some extent older larvae, are sensitive to photoperiodic conditions. Adults that have just entered diapause break their dormancy soon if transferred to long photoperiods or high temperatures. After about 2 more months at their hibernation sites the photoperiodic response disappears, and the bugs remain inactive due to low winter temperatures. There is latitudinal cline in the photoperiodic response, southern populations having shorter critical photoperiods.This publication has 0 references indexed in Scilit: