SOME FACTORS AFFECTING DIAPAUSE IN THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (HBN.) (LEPIDOPTERA: PYRALIDAE)

1 April 1959

journal article
Published by Canadian Science Publishing in Canadian Journal of Zoology

Vol. 37 (2) , 161-168
https://doi.org/10.1139/z59-019

Abstract

At 65° F, the percentage of larvae of the European corn borer entering diapause increased from practically 0 to 95 as the photoperiod was increased from 0 to 9.5–14 hours of light per day, and decreased sharply to a minimum of 3 as photoperiod was increased to 16 or more hours of light per day. Rearing and studies on oxygen consumption revealed that, to be most effective, exposure to factors inducing diapause must begin before the second day of the final instar, and must continue for a period equivalent to the duration of the final instar at 65° F. Exposure during any single instar but the last was not effective in inducing diapause.

Keywords

This publication has 2 references indexed in Scilit:

Factors Governing the Induction of Diapause in the Oriental Fruit Moth1
Annals of the Entomological Society of America, 1949
The European Corn Borer Pyrausta Nubilalis Hubn.: I. A Discussion of Its Dormant Period
Ecology, 1927