Measured Dose of Gamma Hexachlorocyclohexane (  666) Required to Kill Flies and Cockroaches, and a Comparison with DDT

Savit, J.; Kollros, Jerry J.; Tobias, Julian M.

doi:10.3181/00379727-62-15367

Cited by 12 publications

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“…They warn against correlating variation in cuticular permeability between different individuals with variation in biological responses such as sensory reactions and mortality from contact insecticides. SAVIT et al (1946) have compared body-surface application versus intra-abdominal injection of y-BHC in Periplaneta americana, and found no statistically significant differences between the LDso's. Similar results were obtained by them for DDT.…”

Section: Review Of Literature On Contact Insecticidesmentioning

confidence: 99%

Entry and Speed of action of Liquid Parathion in Relation to the Cuticular composition and exoskeletal Features of Eurygaster integriceps, Put

Talhouk

2009

Zeitschrift Für Angewandte Entomologie

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T a b 1 e o f c o n t e n t s : Abstract. -I. Preface. -11. Life-History and Habits. --111. Review of Literature on contact Insecticides. -IV. Morphology. Techniques. External and Peripheral Sensory Anatomy: a) The head; b) The antennae; c) The praboscis; d) The regions around the meso-and meta-thoracic legs; e) The thoracic and abdominal spiracles; f) 9 e scutellum; g) The abdominal tergites; h) T+ abdominal sternites; i) The paratergites; j) The anal ring; k) The female external genitalia; 1) The legs. AbstractEurygaster integriceps Put. is an important wheat pest in S y r i a , T u r k e y , I r a q , I r a n , P a k i s t a n , and parts of R u s s i a . Biological and chemical methods of control against this insect have met with little success. Among the more successful chemicals reported was calcium arsenite dust in irrigated fields (STAROSTIN, 1944;PEREDELSKII, 1947). Later, parathion dusts were tried in R u s s i a (PAIKIN, 1950) and in S y r i a (TALHOUK, 1951(TALHOUK, , 1954, and were found very effective against all post-embryonic stages of this pest.However, there are rather conflicting points of view in the literature regarding the method and place of entry of contact insecticides. For this reason the present study was undertaken. It attempts to correlate the cuticular composition and the exoskeletal features of Eurygaster integriceps with their role in the entry and speed of action of parathion.In beginning this work, the first few weeks were spent in the detailed, microscopical examination of the external anatomy and sense receptors.The second part of the work consisted of the experimental application of parathion at eleven different points on the insect's body. There were five replicates of ten insects each for the different treatment groups. Parathion droplets were obtained by means of a syringe-micrometer attachment.The experimental lots differed significantly in their LTSO's as well as the mean length of time required for complete kill.The analysis of variance of LTSo (in hours) indicates a very high significance that can be attributed to treatment.The significance of the.diff erence between means was calculated for "t" values by Student's Method. Z. ang. Ent. Bd. 40 Heft 2 9

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Section: Review Of Literature On Contact Insecticidesmentioning

confidence: 99%