Experimental and Applied Acarology (2011) 55, 183-190

Maqsood Shah, Takeshi Suzuki, Noureldin Abuelfadl Ghazy, Hiroshi Amano and Katsumi Ohyama (2011)
Effect of photoperiod on immature development and diapause induction in the Kanzawa spider mite, Tetranychus kanzawai (Acari: Tetranychidae)
Experimental and Applied Acarology 55 (2), 183-190
Abstract: The diapause response of the Kanzawa spider mite (KSM), Tetranychus kanzawai, was examined. KSMs were reared in aluminum bottles at 18°C with different combinations of light and dark periods created by the light-control unit. The developmental periods for all immature stages tended to decrease as the light period increased. The photoperiodic response curve for diapause induction showed that the critical (=50% diapause) light period was around 13 h days⁻¹. No diapause induction was observed when the light period was longer than 13.5 h days⁻¹ or under continuous light. At 13-h days⁻¹ light period, the developmental period for deutonymphal stage as well as for the total immature stages was longer in diapaused females than in non-diapaused females. These results indicate that immature development as well as diapause induction are affected by photoperiod and further suggest that diapause-inducing stimuli prolong the developmental period especially for the deutonymphal stage of KSMs.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Noureldin Abuelfadl Ghazy, Hiroshi Amano

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tetranychus kanzawai