Some Effects of Synthetic Juvenile Insect Hormones and Hormone Analogues on Tribolium Castaneum (Herbst).

Williams, Peter C.; Amos, T. G.

doi:10.1071/zo9740147

Cited by 30 publications

(9 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When eggs of stored-product beetles are exposed on grain treated with hydroprene, adult emergence is reduced and many of the emerged adults exhibit morphological abnormalities (Rup andChopra 1984, Williams andAmos 1974). Morphological effects in adult cockroaches are also commonly associated with exposure of nymphs to IGRs (King and Bennett 1989, King and Bennett 1991, Atkinson et al 1992, Short and Edwards 1992, but there is only one published study on the effects of IGRs on late instar Tribolium larvae (Hoppe 1981).…”

Section: Discussionmentioning

confidence: 97%

Susceptibility of Last Instar Red Flour Beetles and Confused Flour Beetles (Coleoptera: Tenebrionidae) to Hydroprene

Arthur

2001

View full text Add to dashboard Cite

Last instar larvae of the red flour beetle, Tribolium castaneum (Herbst), and the confused flour beetle, Tribolium confusum Jacquelin du Val, were either exposed for 8-144 h on concrete treated with 1.9 x 10(-3) mg(AI)/per cm2 hydroprene, or continually exposed on concrete treated with 9.8 x 10(-4) to 1.9 x 10(-3) mg[AI]/per cm2 hydroprene. In both tests, larvae were exposed and held at 27 or 32 degrees C and 40, 57, or 75% RH. When larvae were exposed with no food to hydroprene for different time intervals, then transferred to untreated concrete containing flour, consistent effects were produced only at 144 h. At this exposure interval, the percentage of beetles arrested in the larval stage after 3-4 wk was generally greater at 75% RH compared with 40 and 57% RH, but there were no differences between species or temperature. The percentages of dead adult red flour beetles and live adults with morphological deformities were also greatest at 75% RH, and defects were more prevalent in red flour beetles than in confused flour beetles. When larvae were continually exposed to different concentrations of hydroprene on concrete that contained flour, the percentage of arrested larvae, dead adults, and live adults of both species generally increased with concentration. There were more deleterious effects at 75% RH compared with either 40 or 57% RH, and effects were more pronounced in the red flour beetle compared with the confused flour beetle. In both experiments, temperature effects were variable and inconclusive. Results indicate that continual exposure of last instar red flour beetle and confused flour beetle to hydroprene can limit population development, but exposure intervals of >6 d may be required for maximum effectiveness.

show abstract

Section: Discussionmentioning

confidence: 97%

Susceptibility of Last Instar Red Flour Beetles and Confused Flour Beetles (Coleoptera: Tenebrionidae) to Hydroprene

Arthur

2001

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

“…Insect growth regulators, including the BPUs and JHAs have shown good potential as control agents against several insect pests of stored products 19, 28, 34–36. As grain protectants, IGRs should possess a fairly long residual activity to preclude insect damage to the commodity during the storage period 28, 36.…”

Section: Discussionmentioning

confidence: 99%

Syntheses and Molecular Structures of New Calix[4]arene Molybdenum and Tungsten Complexes

Attner

Radius

2001

Chem. Eur. J.

View full text Add to dashboard Cite

An unusual disproportionation reaction of the molybdenum(IV) and tungsten(IV) chlorides [MCl4L2] (M=Mo, L=Et2S, Et2O; M=W; L= Et2S) in the presence of p-tBu-calix[4]arene (Cax(OH)4) and triethylamine leads to d0 complexes [(CaxO4)[CaxO2(OH)2]M] (1) and d3 compounds (HNEt3)2[(CaxO4)2M2] (2). Complexes la (M = Mo), 1b (M = W), and the HCl adduct of 2a (M = Mo) have been structurally characterized. Compound 1a represents one of the few examples of a well-characterized molybdenum(VI) hexa-alkoxide complex of the type [Mo(OR)6]. Isolation and structural characterization of the side product [(CaxO4W)[kappa2(O)-kappa1(O)-CaxO3(OH)](CaxO4WCl)] (3) suggests the intermediacy of chloro-containing calix[4]arene complexes in these reaction mixtures. The reaction of 1a with HCI provides [CaxO4MoCl2] (4a), the first well-defined example of a mixed molybdenum(VI) alkoxide halide compound of the general formula [MoClx(OR)6-x].

show abstract

Some Effects of Synthetic Juvenile Insect Hormones and Hormone Analogues on Tribolium Castaneum (Herbst).

Cited by 30 publications

References 9 publications

Susceptibility of Last Instar Red Flour Beetles and Confused Flour Beetles (Coleoptera: Tenebrionidae) to Hydroprene

Susceptibility of Last Instar Red Flour Beetles and Confused Flour Beetles (Coleoptera: Tenebrionidae) to Hydroprene

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

Syntheses and Molecular Structures of New Calix[4]arene Molybdenum and Tungsten Complexes

Contact Info

Product

Resources

About