Journal of the Australian Entomological Society (1979) 18, 387-390

K.G. Wardhaugh (1979)
Photoperiod as a factor in the development of overwintering nymphs of the Australian plague locust, Chortoicetes terminifera (Walker) (Orthoptera: Acrididae)
Journal of the Australian Entomological Society 18 (4), 387-390
Abstract: Laboratory data show that at short daylength (11L:13D) the development of larvae of Chortoicetes terminifera is delayed at the third instar. No delay in development occurs at photoperiods of 12.5L:11.5D or 15.5L:8.5D. The effects of short daylength are enhanced by low temperatures and are more marked in larvae hatching from non-diapausing eggs than in those from diapausing eggs laid by the same parents. The former normally hatch before the onset of winter, whereas in the latter the diapause mechanism normally prevents hatching until spring. The slow development of overwintering larvae has previously been attributed solely to the effects of low temperature.
(The abstract is excluded from the Creative Commons licence and has been copied from Acridological Abstracts with permission by NRI, Univ. of Greenwich at Medway.)
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Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Chortoicetes terminifera