Phenylethers as Insect Growth Regulators: Laboratory and Field Experiments

Zurflueh, R.

doi:10.1007/978-1-4684-7947-8_5

Cited by 16 publications

(6 citation statements)

References 18 publications

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“…Hormones were applied by injecting 1 pg of the JH analogue (JHA*) epofenonane (Serva, Heidelberg, FRG;Zurflueh, 1976) in 2 p1 heavy mineral oil or 5 pg 20E (Calbiochem, La Jolla, CA) in 2 p1 10% ethanol immediately after pupal ecdysis (Wolbert, 1985). Total RNA was isolated from carcasses by means of a commercially available modification of the one-step phenol/ guanidine thiocyanate method (TRIzol; GibcoBRL, Eggenstein, FRG) of Chomczynski and Sacchi (1987).…”

Section: Methodsmentioning

confidence: 99%

Hormonal control of expression of a pupal cuticular protein gene during metamorphosis in Galleria

Kramer¹,

Wolbert²

1996

Arch. Insect Biochem. Physiol.

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To trace the developmentally regulated expression of a gene coding for a pupal cuticle protein (GmPCP52), total RNA of carcasses was extracted at different times during metamorphosis and subjected to Northern blot analysis. Blots were probed with a dig-labelled antisense in vitro transcript of GmPCP52 cDNA.In untreated animals, GrnPCP52 mRNA is absent during the wandering stage in last instar larvae. The amount of mRNA rises after pupal ecdysis to a maximum at a pupal age of 18 h. At 42 h it again becomes undetectable. Injection of the JH analogue epofenonane immediately after pupal ecdysis delays the decline of GmPCP52 mRNA, without the transcript have completely disappeared at 60 h. Thereafter it comes up again from day 3 to day 7 in the course of synthesis of a secondary pupal cuticle. Injection of 20E causes precocious disappearance of CMPCP52 mRNA. It becomes undetectable at day 2. Comparison of the Northern blot data with results of in vitro translation experiments reveals participation of translational control. o 1996 Wiley-Liss. Inc.

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Section: Methodsmentioning

confidence: 99%

Hormonal control of expression of a pupal cuticular protein gene during metamorphosis in Galleria

Kramer¹,

Wolbert²

1996

Arch. Insect Biochem. Physiol.

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“…The product is formulated as an emulsion with 500 g a.i./I (ACR 2019 E). The synthesis, properties and first laboratory trials obtained with this material were described by Zurflueh (1976), Hangartner et al (1967), Schooneveld et al (1976), Vogel et al (1976) and Schmid et al (1977).…”

Section: Active Materialsmentioning

confidence: 99%

THE USE OF INSECT GROWTH REGULATORS, ANALOGUES OF THE JUVENILE HORMONE, AGAINST SUMMER FRUIT TORTRIX MOTH, ADOXOPHYES ORANA AND OTHER PESTS

Schmid

Molen²,

Jucker³

et al. 1978

Entomologia Exp Applicata

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The effectiveness of an insect growth regulator (IGR) of the juvenile hormone type (Ro 10–3108/018) was tested in field trials in 1976 against summer fruit tortrix (Adoxophyes orana F.v.R., Lepidoptera: Tortricidae) and other orchard pests. The orchards were sprayed in spring at the beginning of the last larval stage of the hibernated generation of the summer fruit tortrix. Numerous deformations were observed in larvae, pupae and adults, collected 1 to 3 weeks after treatment. The emergence of moths reared from exposed larvae and the reproduction of emerged adults were considerably reduced. In well‐isolated orchards, the flight of moths of the treated generation was low, but in less isolated ones reinfestation from elsewhere was observed. The population of the next generation, which was studied in fifteen apple and two pear orchards in Switzerland and in the Netherlands, decreased markedly in well‐isolated orchards. Moreover, fruit damage was no greater than that following a classical spraying programme. The advantages and disadvantages of the application of these specific insecticides in integrated control programmes are discussed. RÉSUME REGULATEURS DE CROISSANCE D'INSECTES (RCI) ANALOGUES D'HORMONE JUVENILE UTILISES CONTRE ADOXOPHYES ORANA ET AUTRES INSECTES RAVAGEURS L'efficacité des régulateurs de croissance d'insectes (RCI), analogues de l'hormone juvénile, a été testée en plein champ contre capua (Adoxophyes orana) et contre d'autres ravageurs des vergers du pommier. Les traitements ont été appliqués au début du dernier stade de la génération hivernante de cette tordeuse. De nombreuses malformations ont pu être observées sur des individus de capua récoltés 1 à 3 semaines après le traitement, aussi bien au stade larvaire que pupal et adulte. Le taux d'éclosion des papillons issus de larves traitées et le potentiel de reproduction de ces imagos éclos ont été fortement réduits. L'effet sur la dynamique de la population du ravageur de la génération suivant l'application des RCI a également été étudié dans 15 vergers de pommiers et 2 vergers de poiriers en Suisse et aux Pays‐Bas. Le vol des papillons de la génération traitée et la population larvaire de la génération d'été ont été fortement réduits dans les vergers bien isolés. D'autre part les dégâts sur fruits restent en général faibles. Les avantages et les répercussions de l'utilisation de ces insecticides plus spécifiques dans la lutte intégrée, sont discutés.

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“…These issues have argued to develop more effective and comparatively safer insecticides (Smet et al, 1990). Insect Growth Regulators (IGRs) are biodegradable in the environment (Staal, 1975;Zurfleuh, 1976) and possess low mammalian toxicity to non-target organisms (Staal, 1975;Oberlander et al, 1997). Chitin synthesis inhibitors belong to the IGRs group, prevent normal molting of larval insects by disrupting the normal process of cuticle formation.…”

Section: Introductionmentioning

confidence: 99%

SCREENING OF SEVEN INSECT GROWTH REGULATORS FOR THEIR ANTI-INSECT ACTIVITY AGAINST THE LARVAE OF Trogoderma granarium (EVERTS) AND Tribolium castaneum (HERBST)

Ali¹

2017

PAKJAS

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Seven insect growth regulators (IGRs) (One juvenile hormone analogues [Pyriproxyfen 10.8EC], two ecdysone agonist [Tebufenozide 20SC, Methoxyfenozide 240SC] and four chitin synthesis inhibitor [Lufenuron 50EC, Flufenoxuron 10DC, Triflumuron 20SC, and Buprofezin 25%WP]) were tested under laboratory conditions against the larvae of Trogoderma granarium (Everts) and Tribolium castaneum (Herbst). Four concentrations of these IGRs (2.5, 5, 7.5, and 10ppm) were applied to observe their effects at 30±2°C and 65±5% r.h. after 7 and 14 days of treatment application. The overall results showed that all the tested IGRs showed significant larvicidal activity against the larvae of both T. granarium and T. castaneum. Results revealed that the highest larval mortality of T. castaneum was 77.30 and 83.54% with flufenoxuron followed by methoxyfenozide (70.40, 76.65%), pyriproxyfen (56.61, 62.86%) and lufenuron (53.16, 59.41%) at 7 and 14 days after treatment (DAT). The lowest mortality 42.81 and 49.06% was resulted in case of triflumeron treatment after 7 and 14 days, respectively. Similarly, In case of T. granarium the highest mortality was 66.96 and 73.20% due to the effect of flufenoxuron, and was lowest 32.47 and 38.72% where triflumeron was applied after 7 and 14 days, respectively. Results regarding the comparative effect of different concentrations showed that highest mortality 65.23% in T. castaneum and 54.88% in T. granarium larvae was noted at 10 ppm and mortality was lowest at 2.5 ppm against both the test insects. Bioactivities of all the tested IGRs were found to be dose and exposure period dependent. The results regarding the relative potency of the entire tested IGRs indicated that they were more effective when applied on wheat as compared to rice and maize. From these results, it is concluded that the applications of IGRs have proved to be very effective against both species examined in the present study. These compounds particularly chitin synthesis inhibitors (CSIs) (flufenoxuron and lufenuron) should be considered as potential components in IPM of stored grains insect pests.

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Phenylethers as Insect Growth Regulators: Laboratory and Field Experiments

Cited by 16 publications

References 18 publications

Hormonal control of expression of a pupal cuticular protein gene during metamorphosis in Galleria

Hormonal control of expression of a pupal cuticular protein gene during metamorphosis in Galleria

THE USE OF INSECT GROWTH REGULATORS, ANALOGUES OF THE JUVENILE HORMONE, AGAINST SUMMER FRUIT TORTRIX MOTH, ADOXOPHYES ORANA AND OTHER PESTS

SCREENING OF SEVEN INSECT GROWTH REGULATORS FOR THEIR ANTI-INSECT ACTIVITY AGAINST THE LARVAE OF Trogoderma granarium (EVERTS) AND Tribolium castaneum (HERBST)

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