TY - JOUR
AU - Newsom, L. D.
AB - Abstract Adult lady beetles Coleomegilla maculate De Geer, were treated with DDT, endrin, toxaphene, or a toxaphene DDT mixture. DDT had no effect on longevity, increased oviposition by ⅔ but reduced the number of F1 progeny produced by ¼; it was equally toxic to diapausing and active beetles. DDT was significantly more toxic to beeties collected from Baton Rouge than to those collected al Boyce, Louisiana but both populations were heterogeneous in their response to it. Endrin decreased longevity but had no effect on oviposition or survival of F1; it was equally toxic to diapausing and active beetles; the experimental population was homogeneous in its response to endrin. Toxaphene decreased longevity and prevented oviposition; the diapausing beetles withstood higher doses of toxaphene than the active beetles; the experimental population was heterogeneous in its response to toxaphene. Toxaphene-DDT mixture exhibited strong synergistic action, decreased longevity, and decreased reproduction about ⅓. It had no cliect on survival potential of the F1. The experimental population was homogeneous in response to the mixture. A log time-probit line technique was devised as a means of expressing the effect of a poison on longevity of an organism under laboratory conditions. This technique is discussed. This content is only available as a PDF. Author notes 1 Portion of a dissertation presented by the senior author for the Doctor of Philosophy degree, Louisiana State University. © 1966 Entomological Society of America
TI - Ecological and Nutritional Studies on Coleomegilla mucalata De Geer (Coleoptera: Coccinellidae). III. The Effect of DDT, Toxaphene, and Endrin on the reproductive and Survival Potentials
JO - Journal of Economic Entomology
DO - 10.1093/jee/59.5.1181
DA - 1966-10-01
UR - https://www.deepdyve.com/lp/oxford-university-press/ecological-and-nutritional-studies-on-coleomegilla-mucalata-de-geer-MU1WsOpax0
SP - 1181
EP - 1187
VL - 59
IS - 5
DP - DeepDyve
ER -