•Photoperiod
(Miller et al., 1991) •Temperature
(Niehoff & Hirche, 2005) •Food availability
(Hind et al., 2000) •Lipid accumulation (hormonal link?)
(Irigoien, 2004)

•Photoperiod
(Miller et al., 1991;
Speirs et al., 2004) •Disturbance
(Miller & Grigg, 1991) •Development
(Hind et al., 2000)