Calocalpe undulata: Contact toxicity of ten insecticides to the larvae

Jacqueline L. Roberson; Marion Page; Nancy E. Gillette

doi:10.1093/jee/67.6.706

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Calocalpe undulata: Contact toxicity of ten insecticides to the larvae

Formally Refereed

Authors:

Jacqueline L. Roberson, Marion Page, Nancy E. Gillette

Year:

1974

Type:

Scientific Journal

Station:

Pacific Southwest Research Station

DOI:

https://doi.org/10.1093/jee/67.6.706

Source:

Journal of Economic Entomology. 67(6): 706-708

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Abstract

Ten insecticides were tested against larvae of Calocalpe undulala (L.). The decreasing order of toxicity at LD₅₀ was: bioethanomethrin, phenothrin, pyrethrins, phoxim, tetrachlorvinfos, mexacarbate, carbaryl, phosmet, DDT, and malathion. At LD90,the decreasing order of toxicity was the same, except that phoxim and tetrachlorvinfos switched positions. Malathion was not toxic at the highest dose level tested (500 µ/g body weight). When the response of C. undulata was compared with that of 4 other forest geometrid species, the data showed that pyrethroids were always the most toxic candidates whereas malathion was always the least toxic.

Citation

Roberson, Jacqueline L.; Page, Marion; Gillette, Nancy L. 1974. Calocalpe undulata: Contact toxicity of ten insecticides to the larvae. Journal of Economic Entomology. 67(6): 706-708.