1954
DOI: 10.1111/j.1744-7348.1954.tb00917.x
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THE EFFECT OF BODY WEIGHT ON THE RESISTANCE TO INSECTICIDES OF THE LAST‐INSTAR LARVA OF DIATARAXIA OLERACEA L., THE TOMATO MOTH

Abstract: With 6 Text-figures)At a constant temperature of zqO C. the final larval instar of DMtaraxia oleracea lasts about 10 days, during which its resistance to D D T and y-BHC as contact insecticides progressively increases up to the 5th or 6th day. It then suddenly decreases, this coinciding with cessation of feeding and the beginning of prepupal formation.Between the 2nd and the 6th days the gross body weight of the last-instar larva increases from about 0.27 to 0.65 g. Under the conditions of the experiments, the… Show more

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Cited by 24 publications
(8 citation statements)
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References 10 publications
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“…Tables 7 and 8 show that shallow sowing favours the systemic action of dieldrin seed-dressings against wheat bulb fly larvae. The reason for this is not clear, although it may be important that a larva entering a shallow-sown plant soon reaches the growing point where the insecticide is perhaps concentrated, whereas it takes longer to burrow spirally down the shoot of a deep-sown plant during which it grows and its resistance probably increases (Way, 1954).…”
Section: Discussionmentioning
confidence: 99%
“…Tables 7 and 8 show that shallow sowing favours the systemic action of dieldrin seed-dressings against wheat bulb fly larvae. The reason for this is not clear, although it may be important that a larva entering a shallow-sown plant soon reaches the growing point where the insecticide is perhaps concentrated, whereas it takes longer to burrow spirally down the shoot of a deep-sown plant during which it grows and its resistance probably increases (Way, 1954).…”
Section: Discussionmentioning
confidence: 99%
“…In addition, adult female W-P insects were significantly larger than adult female W insects. It is well known that the larger individuals of an insect population are able to tolerate higher doses of synthetic insecticides (e.g., Tomato moth, Diataraxia oleracea L. (Way, 1954) and Locusts (McCuaig, 1956)). In particular, in S. oryzae there is a positive correlation between body size and time to knock-down in the presence of the organophosphate insecticide pirimiphos methyl and this correlation may be influenced genetically (Holloway, 1986b).…”
Section: Discussionmentioning
confidence: 99%
“…The ~fficulty in obtaining enough flies, distributed into weight-classes, after weighings during a whole day of work, did not enable the use of the same experimental design with houseflies. The probit plane technique was also used by Way (1954)and MacCuaig (1956MacCuaig ( , 1961. The studies by Gast (1959) and Ellis (1972) follow a different design but again the number of insects available was a limitation to such a procedure.…”
Section: Discussionmentioning
confidence: 99%
“…Knowledge of the influence of body size in test insects on their susceptibility is of interest and might, for example, assist in accounting for variation in determinations of toxicity, either when same or ,different stocks of one species of test insect are employed. With other species and using larval stages, Bliss (1936), Way (1949Way ( , 1954 and Gast (1959) gave relevant facts on the effect of body weight on suscepfibi,'lity. On the .ad~t stage work on adults was clone by MacCuaig (1956MacCuaig ( , 1961 with locusts 'a~,d E~IS 0972)p~blished some data on Sitophilus granarius, while Lavadinho (1973) used the same species.…”
mentioning
confidence: 99%