Reduction of Fecundity and Control of the Khapra Beetle by Juvenile Hormone Mimics1

Metwally, M. M.; Sehnal, František; Landa, V.

doi:10.1093/jee/65.6.1603

Cited by 24 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to decrease in fecundity and hatchability, the females treated with 80 ppm of the two compounds produced no offspring and suffered mortality. In some insects, the decrease in fecundity after treatment with a mimic was shown to be due to the derangements in the differentiation of oogonia and follicular cells (Metwally et al 1973;Rohdendorf and Sehnal 1972).…”

Section: Cdsmentioning

confidence: 99%

Nanomaterials: A Review of Their Action and Application in Pest Management and Evaluation of DNA-Tagged Particles

Chandrashekharaiah

Kandakoor

Gowda

et al. 2015

New Horizons in Insect Science: Towards Sustainable Pest Management

View full text Add to dashboard Cite

Nanotechnology, a new field of research, prompted scientists to work on a wide range of aspects. Nanoparticles relating to pest management include formulation for herbicides and pesticides. The potential uses of nanotechnology in insect-pest management include the slow release, efficient dosage of insecticides, and provide diagnostic tools for early detection. Application of nanaoparticles also includes development of nanodispensers, nanogels, and nanocapsules. Effects of different inorganic nanoparticles against selected insects were evaluated under laboratory conditions. DNA-tagged nanogold caused 30.50, 57.50, and 75.00 % mortality on third, fourth, and fifth instar Spodoptera litura larvae, respectively. CdS nanoparticle caused highest S. litura larval mortality of 21.41-93.79 % at 150 and 2400 ppm, respectively. The nano-TiO2 showed maximum of 73.79 % S. litura larval mortality at 2400 ppm and the least was 18.50 % at 150 ppm. Nano-Ag caused maximum 56.89 % S. litura mortality at 2400 ppm followed by 46.89 and 33.44 % mortality at 1200 and 600 ppm, respectively. Nanoparticles coated with ecdysteroid analogues like tebufenozide and halofenozide were tested against Corcyra cephalonica. The treated eggs did not hatch due to arrest of embryonic development. Tebufenozide and halofenozide caused maximum larval mortality at 80 ppm. These two compounds at 80 ppm reduced fecundity and fertility in adults. Tebufenozide against Helicoverpa armigera larvae reduced the larval weight. Tebufenozide at 5.00 ppm was reduced the larval weight significantly (14.23 ± 1.43 and 112.35 ± 0.29, respectively) compared to control. Histopathological effects of tebufenozide at the light microscopic level showed vacuolation and inhibition of imaginal buds. At electron microscopic level,

show abstract

Section: Cdsmentioning

confidence: 99%

Nanomaterials: A Review of Their Action and Application in Pest Management and Evaluation of DNA-Tagged Particles

Chandrashekharaiah

Kandakoor

Gowda

et al. 2015

New Horizons in Insect Science: Towards Sustainable Pest Management

View full text Add to dashboard Cite

show abstract

“…IGRs block embryogenesis of insects (Retnakaran 1970;Abdallah et al 1975), reduce egg production in emerging adults (Metwally et al 1972) and cause severe morphological disorders (Williams and Amos 1974;Arias and Mulla 1975). Although the prime target site of IGRs (like JH) are endocrine systems there are reports of many physiological and biochemical changes in metabolic pathway caused by these compounds (Kim and Kim 2002;Leonardi et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Physiological and Biochemical Effect of Pyriproxyfen on Indian Meal Moth Plodia Interpunctella (Hübner) (Lepidoptera: Pyralidae)

Ghasemi¹,

Sendi²,

Ghadamyari³

2010

Journal of Plant Protection Research

View full text Add to dashboard Cite

Insect growth regulators generally have a selective effect on the target insects and have practically no apparent side effect on non-target organisms especially vertebrates. Hence, insect growth regulators could be a suitable choice to control pests in stored products. Ten-day-old larvae of Indian meal moth Plodia interpunctella (Hübner) were expressed to the juvenile hormone analogue pyriproxyfen in order to have an effect on growth, metamorphosis, reproduction, lipid and protein contents of ovaries. The larvae were treated by 0.02, 0.04, 0.08, 0.16, and 0.3 ppm of JHA in an artificial diet where controls received acetone alone. The results indicated significant differences in duration of growth, mean longevity of hatched adults, percentage of emerged normal adults, abnormal pupae, hatched larvae and mean oviposition ratein addition to the lipid and protein of ovaries compared to the controls. An inhibition concentration of fifty (IF 50 ) for prevention of emerging adults was recorded 0.134 ppm. Pyriproxyfen caused significant defects in the legs and wings of some adults and sever morphological changes in the ovaries of emerged adults. The results showed that pyriproxyfen may be applied as an insecticide to decrease the damage caused by Indian meal moth on stored products. Pyriproxyfen can be used with low side effects to humans.

show abstract

“…Also, observations on control insects suggest th a t the juvenllizing effects observed in norm al laboratory populations were not conferred by vapors of juvenile hormone mimics used throughout the experim ents. Indications of such an effect has been reported by Metwally et al (8). However, no control insects kept close to experi m ental insects showed any sign of deform ation associated w ith a juvenilizing agent such as blocked development, retention of nym phal characters by adults or reduction of fecundity of insects.…”

Section: Insectsmentioning

confidence: 58%

“…of 6th stage nym phs and of supernum erary adults of P. megistus were made and enable an assessment of the effects on these organs, as inFigures 6,7,8,9, 10 and 11. …”

mentioning

confidence: 99%

Spontaneous morphogenetic juvenilization observed in laboratory populations of vector species of Chagas disease (Triatominae)

Perlowagora-Szumlewicz¹,

Cruz²,

Araújo³

1973

Rev. Soc. Bras. Med. Trop.

View full text Add to dashboard Cite

Reported are observations on spontaneous occurring morphogenetic juvenilization in laboratory populations of vector species of Chagas disease. Two general effects have been observed: arrested development and uncoordinated development. These are manifested by supernumerary nymphs (6th stage), intermediate nymphal-adult stages, badly deformed adults developed from 5th instar nymphs, uncoordinated development manifested by grotesque forms of adults, supernumerary adults unable to complete metamorphosis and complete supernumerary adults produced by 6th stage nymphs. The reoccurrence of insects with identical grades of juvenilization in the population is an indication that this is a genetic trait that might be inherited. The factors responsible for morphogenetic juvenilization cannot be transmitted through the juvenilized insects because they are sterile, than they were transmitted through normal insects probably as a recessive or a group recessive factors. The spontaneous morphogenetic juvenilization observed in laboratory populations has a striking similarity to juvenilizing effects induced by application of juvenile hormone analogues, described in the literature and also obtained in our laboratory in a study to be published. Thus it is suggested that both; the altered phenotypes occurring in wild populations and their "phenocopies" induced by the application of juvenile hormone analogues are products of gene controlled identical reactions.

show abstract

Reduction of Fecundity and Control of the Khapra Beetle by Juvenile Hormone Mimics1

Cited by 24 publications

References 0 publications

Nanomaterials: A Review of Their Action and Application in Pest Management and Evaluation of DNA-Tagged Particles

Nanomaterials: A Review of Their Action and Application in Pest Management and Evaluation of DNA-Tagged Particles

Physiological and Biochemical Effect of Pyriproxyfen on Indian Meal Moth Plodia Interpunctella (Hübner) (Lepidoptera: Pyralidae)

Spontaneous morphogenetic juvenilization observed in laboratory populations of vector species of Chagas disease (Triatominae)

Contact Info

Product

Resources

About