Some Macroscopic Effects Resulting From the Fumigation of Plodia Larvae with Carbon Disulphide in Relation to Revival Potentialities

Abstract

Grown larvae of the Indian-meal moth (Plodia interpunctella Hbn.) revived from one to two weeks after fumigation with carbon disulphide at the rate of 2 pounds per 1000 cubic feet, in the latter part of October at Fresno, Calif. During the period of inactivity between fumigation and revival, the potential revivals may be detected with considerable accuracy by their retention of a nearly normal color and a fair degree of turgidity, and by their not being severely shriveled. Among such individuals, however, one can not determine which or what percentage, will later become fully resuscitated. Congestion of the intestinal tract is a common condition of reviving larvae and is operative in causing the subsequent death of a portion of them. Five larvae, revived from the 6-hour exposure, developed to the adult condition.