Insecticide Susceptibility and Response to Selected Pollens of Larval Alfalfa Leafcutting Bees,Megachile pacifica(Panzer) (Hymenoptera: Megachilidae)1
作者:
G. N. Guirguis,
W. A. Brindley,
期刊:
Environmental Entomology
(OUP Available online 1974)
卷期:
Volume 3,
issue 4
页码: 691-694
ISSN:0046-225X
年代: 1974
DOI:10.1093/ee/3.4.691
出版商: Oxford University Press
数据来源: OUP
摘要:
A method for rearing larvae from field-collected eggs ofMegachile pacifica(Panzer) was used to measure insecticide toxicities, synergist ratios, and larval growth on 4 pollen species. Carbaryl, propoxur, Landrin® (3,4,5-trimethylphenyl methylcarbamate and 2,3,5-trimethylphenyl carbamate) and methomyl had LC50values ranging from 42–121 ppm. Gardona® [2-chloro-1-(2,4,5-trichlorophenyl) vinyl dimethyl phosphate] and monocrotophos were more toxic with LC50values of about 1.7 and 2.6 ppm, respectively. The carbaryl-piperonyl butoxide synergist ratios for the larvae were estimated to range between 1.57–2.17. Alfalfa pollen provided the best larval growth. Pollens from goatsrue, sweet clover, and goldenweed were less satisfactory.
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