Effects of Farnesol on the Ultrastructure of Brain and Corpora Allata, Sex Hormones and on some Oxidative Stress Parameters in<i>Locusta migratoria</i>(Orthoptera: Acridiidae)

Awad, H.H.; Ghazawy, N.A.

doi:10.4001/003.024.0502

Cited by 5 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To explicate the prolongation of larval and pupal duration and retarded developmental rate of G. mellonella after force-feeding of 3 rd instar larvae on diet mixed with IAA, in the current study, the present PGR might indirectly interfere with the neuroendocrine organs responsible for the synthesis and release of tropic hormones, such as prothoracicotropic hormone (Subrahmanyam et al, 1989), or interfere with some endocrinal metabolic processes involved in development (Kaur and Rup, 2002). The prolongation of larval duration might be due to decreased food intake, caused by phagodeterrence of IAA (Awad and Ghazawy, 2016), or by a deviation of part of the taken food to the detoxification metabolism (Tanzubil and McCaffery, 1990). With decreased food ingestion and low biomass conversion, the insect takes longer to reach the critical weight for ecdysis, leading to the prolongation of larval duration (Giongo et al, 2015).…”

Section: Prolonged Developmental Durations and Regressed Developmental Ratementioning

confidence: 58%

Toxicity and Bio-Efficacy of Indole-3-Acetic Acid, A Plant Growth Regulator, Against the Greater Wax Moth, Galleria mellonella Linnaeus (Lepidoptera: Pyralidae)

Ghoneim

Hamadah

El‐Hela

2021

Egyptian Academic Journal of Biological Sciences. A, Entomology

View full text Add to dashboard Cite

The greater wax moth Galleria mellonella L. is a dangerous pest for the apiculture industry in the world. The objective of the present study was to evaluate the insecticidal activity of the auxin plant growth regulator, Indole-3-acetic acid (IAA), against G. mellonella and its effect on the growth, development, metamorphosis and morphogenesis of this insect pest. The 3 rd instar larvae were force-fed on an artificial diet supplemented with six concentrations, viz., 100, 10.0, 1.0, 0.1, 0.01 & 0.001ppm of IAA. The most important results could be summarized as follows. IAA exhibited the strongest acute toxicity on larvae at the higher two concentrations. At other concentrations, various degrees of toxicity on larvae were found in a dose-dependent course. No pupae or adults were produced at the higher two concentrations. IAA failed to display chronic toxicity on the developed pupae. All emerged adults died at 1.00ppm of IAA but no adult mortality was observed at the three lower concentrations. LC50 value was calculated in 0.24 ppm. IAA enhanced the treated larvae to grow with increasing weight gain. Also, it promoted the treated larvae, since the growth rate increased with the increasing concentration. IAA exhibited a retarding effect on the pupation, only at the higher two concentrations. The larval and pupal durations were significantly prolonged, in a dose-dependent manner. On the other hand, IAA failed to disturb the hormonal regulation of the development program, since no intermediate creatures were produced. Also, it failed to disrupt the pupal morphogenesis, since no pupal deformities had been observed.

show abstract

Section: Prolonged Developmental Durations and Regressed Developmental Ratementioning

confidence: 58%

Toxicity and Bio-Efficacy of Indole-3-Acetic Acid, A Plant Growth Regulator, Against the Greater Wax Moth, Galleria mellonella Linnaeus (Lepidoptera: Pyralidae)

Ghoneim

Hamadah

El‐Hela

2021

Egyptian Academic Journal of Biological Sciences. A, Entomology

View full text Add to dashboard Cite

show abstract

“…The sesquiterpenoid polygodial was successfully applied in the field against bird cherry-oat aphid Rhopalosiphum padi giving similar results to those obtained with cypermethrin (Pickett et al ., 1997). Farnesol possesses antifeedant and neurotoxic properties towards the migratory locusts Locusta migratoria (L.) (Orthoptera: Acridiidae) and has been proposed for use as a biocide admixture in bait traps in the integrated pest management programs against the locusts (Awad and Ghazawy, 2016). A mixture of farnesol isomers and ( E , E )-α-farnesene causes high mortality among nymphs of the black bean aphid, Aphis fabae Scopoli and M. persicae when topically applied (Harrewijn et al ., 2001).…”

Section: Discussionmentioning

confidence: 99%

New insight into the behaviour modifying activity of two natural sesquiterpenoids farnesol and nerolidol towards Myzus persicae (Sulzer) (Homoptera: Aphididae)

Wróblewska-Kurdyk

Dancewicz

Gliszczyńska

2019

Bull. Entomol. Res.

View full text Add to dashboard Cite

The effect of structurally related sesquiterpenoids (E,E)-farnesol and cis-nerolidol on the host-plant selection behaviour of the peach potato aphid Myzus persicae (Sulz.) was evaluated using electrical penetration graph (EPG) technique. No repellent effects of (E,E)-farnesol and (Z)-nerolidol to M. persicae were found but aphid probing activities on (E,E)-farnesol- and cis-nerolidol-treated plants were restrained. During non-phloem phases of probing, neither (E,E)-farnesol nor (Z)-nerolidol affected the cell puncture activity. On (E,E)-farnesol-treated plants, the total duration of phloem phase, the mean duration of individual sustained ingestion periods were significantly lower, and the proportion of phloem salivation was higher than on control plants. On (Z)-nerolidol-treated plants, the occurrence of the first phloem phase was delayed, and the frequency of the phloem phase was lower than on control plants. The freely moving aphids were reluctant to remain on (E,E)-farnesol- and (Z)-nerolidol-treated leaves for at least 24 h after exposure. (E,E)-Farnesol and (Z)-nerolidol show complementary deterrent properties, (E,E)-farnesol showing ingestive and post-ingestive activities and nerolidol showing pre-ingestive, ingestive, and post-ingestive deterrent activities.

show abstract

“…The prolongation of larval duration might be due to decreased food intake, caused by phagodeterrence of Farnesol (Awad and Ghazawy, 2016), or by a deviation of part of the taken food to the detoxification metabolism (Tanzubil and McCaffery, 1990). With decreased food ingestion and low biomass conversion, the insect takes longer to reach the critical weight for ecdysis, leading to the prolongation of larval duration (Giongo et al, 2015).…”

Section: Prolonged Developmental Durations and Delayed Developmentmentioning

confidence: 99%

Bioefficacy of Farnesol, A Common Sesquiterpene, On the Survival, Growth, Development, and Morphogenesis of Spodoptera littoralis (Lepidoptera: Noctuidae).

Ghoneim

Hamadah

Waheeb

2020

Egyptian Academic Journal of Biological Sciences, F. Toxicology

View full text Add to dashboard Cite

Egyptian cotton leafworm Spodoptera littoralis (Boisduval) is a dangerous pest of many field crops and vegetables in the world. The present study was conducted to evaluate the toxicity of Farnesol and its effects on the growth, development, and morphogenesis of this insect. The newly moulted larvae of 5 th (penultimate) or 6 th (last) instar larvae were fed on castor bean leaves previously treated with 7 concentrations of Farnesol (400, 200, 100, 50, 25, 12.5 & 6.25 ppm) for 24 hr. The most important results could be summarized as follows. After treatment of 5 th or 6 th instar larvae with Farnesol, various mortalities were recorded among larvae, pupae, and adults. Depending on LC 50 values, Farnesol exhibited stronger insecticidal activity after treatment of 6 th instar larvae (LC 50 = 33.67 ppm) than after treatment of 5 th instar larvae (LC 50 = 36.56 ppm). Farnesol caused a serious reduction of larval weight gain and deleterious regression of the growth rate. The larval and pupal durations had been remarkably prolonged, in a dose-dependent course. Disruption of the developmental program was recorded as a failure of ecdysis after treatment of 5 th instar larvae and production of larval-pupal intermediates, regardless the treated larval instar. Farnesol exerted considerable suppressing action on the pupation. At higher concentrations, Farnesol interfered with the adult emergence, since eclosion was completely prevented at the highest concentration and partially blocked at other concentrations. Irrespective of the treated larval instar, some deformed pupae were developed only at higher two concentrations of Farnesol.

show abstract

Effects of Farnesol on the Ultrastructure of Brain and Corpora Allata, Sex Hormones and on some Oxidative Stress Parameters inLocusta migratoria(Orthoptera: Acridiidae)

Cited by 5 publications

References 36 publications

Toxicity and Bio-Efficacy of Indole-3-Acetic Acid, A Plant Growth Regulator, Against the Greater Wax Moth, Galleria mellonella Linnaeus (Lepidoptera: Pyralidae)

Toxicity and Bio-Efficacy of Indole-3-Acetic Acid, A Plant Growth Regulator, Against the Greater Wax Moth, Galleria mellonella Linnaeus (Lepidoptera: Pyralidae)

New insight into the behaviour modifying activity of two natural sesquiterpenoids farnesol and nerolidol towards Myzus persicae (Sulzer) (Homoptera: Aphididae)

Bioefficacy of Farnesol, A Common Sesquiterpene, On the Survival, Growth, Development, and Morphogenesis of Spodoptera littoralis (Lepidoptera: Noctuidae).

Contact Info

Product

Resources

About