, Volume 50, Issue 10, pp 969-971

Threshold and quantitative photoperiodic responses exist in an insect

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

The photoperiodic response for the induction of adult diapause and that for the determination of nymphal body coloration were compared inPlautia stali Scott (Heteroptera: Pentatomidae). The former was an all-or-none response with a distinct threshold, but the latter was a graded response which varied quantitatively with the photophase duration. The photoperiodic clock in this species is discussed.