Effect of synthetic methylquinone, aggregation pheromone and pirimiphos‐methyl on sex ratios in <i>Tribolium castaneum</i>

Mondal, K. A. M. S. H.

doi:10.1111/j.1570-7458.1987.tb01068.x

Cited by 7 publications

(6 citation statements)

References 9 publications

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“…The reduced larval hatching in T. castaneum in the present experiment due to insecticides (cypermethrin and fenitrothion) is similar to the finding of Mondal (1987) and Rahman (1992) who reported significantly (P<0.005) reduced fertility of Tribolium due to the effect of pirimiphos methyl.…”

Section: Discussionsupporting

confidence: 79%

“…Fecundity in Tribolium is influenced by different environmental factors including moisture, temperature food (Park andFrank 1948, Holdaway 1932), flour medium (Khalequzzaman et al 1994) and conditioning of the medium by the beetles living in it (Mondal and Port 1985). A healthy Tribolium fertile female lays no egg in the first three days of adult life, and then they lay egg at an increasing rate upto 18 per day (Ashford 1970).…”

Section: Introductionmentioning

confidence: 99%

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Potential of pyrethroid insecticides and plant extracts on fecundity and egg viability of Tribolium castaneum (Herbst)

2012

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Context: Sythetic pyrethroid and two botanical may reduce the fecundity and egg viability of red flour beetle, Tribolium castaneum (Herbst) and can be used in grain protection. Objective:To determine the effect of cypermethrin, fenitrothion, Murraya paniculata L. and Jatropha gossypifolia L. plant extracts on fecundity and egg viability of T castaneum. Materials and Methods:Newly hatched T. castaneum larvae were kept in a petridish containing 30 g either fresh or treated flour separately. After pupation the pupae were sieved and sexed by microscopic examination and kept separately for adult emergence. Twenty five pairs (1♂: 1♀) adults were paired from treated and one pair from untreated media and placed in a glass vial containing 2 g of food either treated or untreated for oviposition in an incubator at 30 ± 0.5°C. Eggs were collected and counted after every three days over a period of 45 days. The eggs laid by the first 15 pairs from each treatment were collected from the experimental vials and kept in separate petridish for hatching. Eggs were regularly observed with a microscope and hatched larvae were counted. Results:The females of all treated media laid less number of eggs than the untreated females. Both insecticides and botanicals affected oviposition significantly (P<0.001) at all doses levels. All the treatments of both the insecticides and botanicals significantly (P < 0.001) reduced the fertility of eggs laid by T. castaneum females in comparison to those of the control. Conclusion:The plant extracts of kamini and jamalgota can effectively reduced the fecundity and egg viability against stored product insect pests with low mamalian toxicity

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Section: Discussionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Potential of pyrethroid insecticides and plant extracts on fecundity and egg viability of Tribolium castaneum (Herbst)

2012

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“…Tribolium larvae exposed to the benzoquinones given off by adults, particularly at high densities, may develop abnormalities (Mondal, 1990). Thus, the need to disperse from a previously colonized medium is not only brought about by a decrease in the quality of diet, but also by the toxicity of benzoquinone secretions.…”

Section: Introductionmentioning

confidence: 99%

Density-Related Volatile Emissions and Responses in the Red Flour Beetle, Tribolium castaneum

2011

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Intraspecific attraction depends both on the cues provided by the attracting individual and the response of the attracted individual. These attracting cues are related not only to current conditions, but also are a reflection of individual and population life history. These relationships were examined by placing red flour beetle, Tribolium castaneum (Herbst.), adults in flasks at increasing densities and monitoring the changes in volatile chemical emission over time. Only certain chemicals were quantified: methyl benzoquinone, ethyl benzoquinone and 4,8-dimethyldecanal, all of which are known to impact the biology of T. castaneum. The flasks were used as sources for both quantification of the chemicals and for bioassays. Additional bioassays were conducted with synthetic 4,8-dimethyldecanal, a known aggregation pheromone component, to evaluate attraction with respect to population density. Tribolium castaneum density affected both the release of volatile chemicals and the responses of conspecifics to those chemicals. The results indicated that while there were important effects of beetle density on chemical emission and response, none of the chemicals evaluated emerged as promising synergists to the current aggregation pheromone 4,8-dimethyldecanal. The benzoquinones released in response to stress and density acted as anti-aggregation pheromones along with their accepted defensive function.

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“…This is caused not only by feeding, but also by the heat produced by the respiratory and metabolic functions of the insects. Accumulation of frass (exuviae, egg shells, dead insects, pupal cases, faecal matter) (MONDAL 1983, 1984, 1994, KHAN & MANNAN 1991 and webbing of food (HILL 1990) are of great nuisance. Insect infestation in stored food causes major health hazards.…”

Section: Introductionmentioning

confidence: 99%

Potential of an Insect Growth Regulator in the Management of the Rice Moth Corcyra Cephalonica Stainton, 1866 (Lepidoptera: Pyralidae)

Tripathi¹,

Tiwari²

2014

Polish Journal of Entomology / Polskie Pismo Entomologiczne

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The present investigation reveals the influence of methoprene, an IGR, on the ontogeny, growth duration and adult longevity of the rice moth Corcyra cephalonica. Twenty-five larvae of different instars (1st, 2nd, 3rd and 4th) of C. cephalonica were exposed to the juvenile hormone analogue methoprene in order to evaluate its potential effect on larval mortality, pupation, pupal mortality, adult emergence, growth duration and adult longevity. These different instars larvae were treated with 2, 4, 8 and 12 ppm of methoprene in an artificial diet (coarsely ground jowar mixed with 5% yeast powder) where the control received acetone alone. The results reveal significant differences in all the parameters mentioned above as compared to the control.

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Effect of synthetic methylquinone, aggregation pheromone and pirimiphos‐methyl on sex ratios in Tribolium castaneum

Cited by 7 publications

References 9 publications

Potential of pyrethroid insecticides and plant extracts on fecundity and egg viability of Tribolium castaneum (Herbst)

Potential of pyrethroid insecticides and plant extracts on fecundity and egg viability of Tribolium castaneum (Herbst)

Density-Related Volatile Emissions and Responses in the Red Flour Beetle, Tribolium castaneum

Potential of an Insect Growth Regulator in the Management of the Rice Moth Corcyra Cephalonica Stainton, 1866 (Lepidoptera: Pyralidae)

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