Section 3: SEASONAL PERIODICITY 



0FDEVEL0PME]4T(DIAPAUSE, 

 HIBERNATION) 



CONTINUOUS RESPIRATION IN DIAPAUSING PREPUPAE 

 AND PUPAE OF CERTAIN SAWFLIES*) 



Непрерывное дыхание у диапаузирующих нредкуколочных стадий и у куколок 

 некоторых пилильщиков 



К. SLAM А 



(Entomological Laboratory of Czechoslovak Academy 

 of Sciences, Praha, Czechoslovakia) 



SUMMARY 



The respiration of diapausing prepujaals stages of the sawfly Cephalcia abietis L. and 

 pupae of Dolerus nigratus F. has been studied by means of a volumetric micro-respiro- 

 meters with a special adaptation for concurrent measuring of respiratory quotients. Con- 

 trary to findings on most diapausing pupae, a continuous respiration without pro- 

 nounced CO- bursts has been found. For comparison, the respiration of lepidopterous 

 pupae of Bupalus piniarius L. and Hyphantria cunea Drury of the same body size as 

 the sawflies was investigated. In these a distinctly discontinuous respiration has been 

 found, the amount of CO- released in the inter-bm"st period being however greater than 

 in large lepidopterous pupae. 



") The detailed report will be published in the Journal of Insect Physiologe'. 



221 



