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Influence of temperature and photoperiod on early developmental rate of Tenodera sinensis Saussure (Mantodea: Mantidae)
Ist Teil von
Proceedings of the Entomological Society of Washington, 1989-10, Vol.91 (4), p.529-533
Ort / Verlag
Washington, DC: Entomological Society of Washington
Erscheinungsjahr
1989
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
Rate of development for the first two instars of the mantid Tenodera sinensis (Saussure) increased with increasing temperature for cohorts maintained at 20 degree C, 25 degree C and 32 degree C. An increase in incubation temperature from 20 degree C to 32 degree C decreased time in instar by more than two thirds for photoperiods of 8L:16D, 16L:8D and 24L:0D. The effect of photoperiod was less pronounced, partly because immobile mantid nymphs could feed in the dark when nocturnally active prey came into contact with them. Total prey consumed and biomass of nymphs at ecdysis did not differ among treatment groups. The effect of temperature apparently was to increase feeding rate, thereby decreasing the time required to consume the threshold amount of prey biomass necessary to trigger molting.