Showing papers by "National Chung Hsing University published in 1978"
TL;DR: This survey confirms the development of resistance to these insecticides in some field populations of the diamondback moth.
Abstract: Diazinon- and methomyl-resistant strains of Plutella xylostella (L.) with resistance ratios of 14.4 and 175, respectively, were developed in the laboratory by continuous selection for 14 and 19 generations. The susceptibility to these 2 chemicals of this insect pest at several locations in Taiwan from 1975–77 was determined. This survey confirms the development of resistance to these insecticides in some field populations of the diamondback moth. Electrophoretic studies revealed qualitative differences in esterase and phosphatase zymograms in susceptible and resistant strains.
40 citations
TL;DR: Some trace metals are required for development and reproduction, and therefore for continuous rearing of the aster leafhopper, Macrosteles fascifrons, on a holidic diet, and requirement for Fe+++ and Zn++ becomes apparent immediately in the 1st generation.
Abstract: Some trace metals are required for development and reproduction, and therefore for continuous rearing of the aster leafhopper,Macrosteles fascifrons, on a holidic diet. Requirement for Fe+++ becomes apparent immediately in the 1st generation; for Cu++ and Zn++, in the 3rd. The leafhopper has grown normally and continuously for 3 generations in the absence of manganese.
2 citations