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Photoperiodic and thermoperiodic interactions in the regulation of the larval diapause of Diatraea grandiosella
An examination of photoperiodic and thermoperiodics effects on diapause development showed that, in general, those combinations of temperature and light cycles which were diapsause inductive also retarded diappause development. Expand
Free amino acids of the haemolymph of the southwestern corn borer and the European corn borer in relation to their diapause
The high titres of proline found in the haemolymph of O. nubilalis during the fall and winter may contribute to the freezing tolerance of this species. Expand
Nature and fate of the nutrient reserves of the periodical (17 year) cicada
The data showed that even though the adults feed, lipids and soluble proteins stored during the larval stages are essential for egg maturation, and to the special requirements of an insect which has a protracted immature stage, yet a fleeting adult existence. Expand
Effect of the ecdysone agonists, RH‐2485 and tebufenozide, on the southwestern corn borer, Diatraea grandiosella
The results suggest that field trials to assess the potential of RH-2485 and tebufenozide to control D. grandiosella are warranted and increasing the time of exposure to either compound decreased the LC 50 value significantly. Expand
Migration of the monarch butterfly, Danaus plexippus: energy sources,.
The origin and nature of the metabolic reserves of the monarch butterfly during its autumn migration through Missouri were examined and lipid classes showed that triglycerides were the dominant class in each sex. Expand
Relationship between the proteins of the haemolymph and fat body during development of Pieris brassicae
The adult moulting cycle was marked by partial histolysis and release of degraded fat body proteins and the loss of another major protein from the haemolymph, not into the fat body, but presumably into the differentiating adult tissues. Expand
Juvenile hormone regulation of the larval diapause of the Southwestern corn borer, Diatraea grandiosella☆
The findings suggest that the initiation and maintenance of diapause are regulated by juvenile hormone titre, and that larvae retain a high titre of juvenile hormone until the last stages of diAPause. Expand
Digestive proteinases of larvae of the corn earworm, Heliothis zea: characterization, distribution, and dietary relationships.
No major differences in midgut proteinase activity were detected between larvae reared under axenic or xenic conditions, indicating that the larvae are capable of digesting proteins in the absence of gut microorganisms. Expand
Metamorphic changes in fat body proteins of the southwestern corn borer, Diatraea grandiosella.
  • G. Chippendale
  • Biology, Medicine
  • Journal of insect physiology
  • 1 June 1970
Developmental changes in the fat body proteins of the southwestern corn borer, Diatraea grandiosella, were studied from the beginning of the fifth instar to the newly ecdysed pupal stage to reveal the presence of three major soluble proteins whose titre greatly increased after pupal ecdysis. Expand