Fecundity and fertility inhibition effects of some plant essential oils and their major components against Acanthoscelides obtectus Say (Coleoptera: Bruchidae)

Evaluation of the Insecticidal Activity of Punica granatum L. and Olea europaea L. against the Dry Bean Beetle , Acanthoscelides obtectus (Say) (Coleoptera:Bruchidae)

“…This confirms the results of (Gandhi et al, 2010) who observed the ability of the evaluated plant leaves powder, P. granatum to significantly suppress adult emergence of Tribolium castaneum (Herbst.). The study results are in the same line of the findings of (Hategekimana and Erler, 2020) who found that the inhibitory effect of EOs from Eucalyptus camaldulensis, Mentha piperita and Pimpinella anisum on fecundity and fertility of A. obtectus. Also (Raja et al, 2001) demonstrated that volatile oils are taken from Mentha arvensis and Cymbopogon nardus prevent adult appearance in Callosobruchus maculatus in cowpea.…”

Omani Frankincense nanoemulsion formulation efficacy and its latent effects on biological aspects of the spiny bollworm Earias insulana (Boisd.)

“…The results from the present study highlighted the inhibitory effect of frankincense nanoemulsion on fecundity and fertility of E. insulana with different volumes and the types of mating combination have a significant effect. Similar findings were also obtained in some previous studies with different oils on different insects ( Hategekimana and Erler, 2020 ) revealed that the EOs had an inhibitory effect on the fecundity was seen in the eucalyptus oil treated T♀ × U♂ combination recorded 47.55% higher than U ♀ × T ♂ recorded 37.68%, also Anise oil T♀ × U♂ combination recorded 74.24% higher than U ♀ × T ♂ recorded 49.33%. In this regard, the results of Ammar and Abd-ElAzeem (2021) also indicated that there was a highly significant decrease in the percentage of hatchability and egg numbers of E. insulana in the case of treatment with biosynthesized nanoparticles, where gelatin-copper nanoparticles (G-CuNPs) were compared to the untreated group.…”

“…Additionally, Campolo et al (2018) suggested that lower offspring output might be related to a drop in daily fecundity and the low viability of eggs deposited by treated females or females mated with treated males. Also, in another explanation, Hategekimana and Erler (2020) found that the pure main components reduced fecundity and fertility much less than their respective essential oils. This could be caused by some synergistic interactions between certain components of essential oil.…”

Assessment of Sex-Specific Toxicity and Physiological Responses to Thymol in a Common Bean Pest Acanthoscelides obtectus Say

“…Since pure thymol seems to affect F1 progeny number mainly through the adverse effect on male survival (similarity of EC 50 value for adult emergence inhibition to LC 50 for males on thymol) it is possible that other compounds in thyme EO additionally reduced emergence through adverse effects on mating, fecundity, larval penetration into seeds and/or preadult survival. Even sublethal concentrations of monoterpenes could have a significant impact on fitness traits and behavior of the bean weevil ( Regnault-Roger and Hamraoui, 1995 ; Jevremović et al, 2019 ; Hategekimana and Erler, 2020 ) and other pests ( Hummelbrunner and Isman, 2001 ; Wang et al, 2009 ; Tak and Isman, 2017 ; de Melo et al, 2018 ; Abdelgaleil et al, 2021a ; Barbosa et al, 2021 ; de Andrade Brito et al, 2021 ; Ruiz et al, 2021 ). Because thymol also affects bean weevil fitness traits ( Regnault-Roger and Hamraoui, 1995 ) and deters oviposition ( Jevremović et al, 2019 ) we suppose that various synergistic and antagonistic interactions of thymol with other monoterpenes might take part in determining the number of emerged adults.…”

“…However, environmental pollution and threats to human health due to insecticide residues as well as the risk of pest resistance evolution ( Guedes et al, 2017 ; Dar et al, 2020 ) forced searching for alternative management tools (reviewed in Mohapatra et al, 2015 ; Daglish et al, 2018 ; Rajendran, 2020 ). For example, recent studies on A. obtectus have evaluated efficacy of hermetic storage ( Freitas et al, 2016 ), inert dusts ( Floros et al, 2018 ; Lazarević et al, 2018 ; Prasantha et al, 2019 ), predators and parasitoids ( Iturralde-García et al, 2020 ), insecticidal products of entomopatogenic bacteria and fungi ( Rodríguez-González et al, 2018 , 2020 ), as well as plant-derived products ( Kısa et al, 2018 ; Jevremović et al, 2019 ; Hategekimana and Erler, 2020 ; Lazarević et al, 2020 ).…”