Effects of plant extracts and essential oils on the behavior of Acrobasis advenella (Zinck.) caterpillars and females

Abstract

At present, Acrobasis advenella (Zinck.) (Lepidoptera, Pyralidae) is the most dangerous pest of black chokeberry (Aronia melanocarpa [Michx.] Elliot). Damaged flower buds may decrease yield, while pest feeding inside fruits causes deterioration in their quality. The aim of the study was to determine and compare the effect of water and acetone plants extracts and essential oils using free choice tests of feeding site of larvae and oviposition of females. The following species were examined: Achillea millefolium, Cymbopogon citratus, Nepeta cataria, Origanum vulgare, Satureja hortensis, Tagetes patula nana, Tanacetum vulgare and Thymus vulgaris. The results showed that plant species had a significant influence on the choice of oviposition and feeding site of A. advenella. Moreover, the type of formulation affected the number of laid eggs. Females did not lay eggs on infructescences treated with acetone extracts. Among the test preparations, the highest percentage larvae and adults of A. advenella was recorded for plants soaked in C. citratus, and therefore it can be a potential attractant for this pest species. The lowest number of eggs and larvae was observed for T. vulgare.

Impairing Effectiveness of Nerolidol, a Sesquiterpene Compound, on Adult Performance and Reproductive Potential of Egyptian Cotton Leafworm, Spodoptera littoralis (Lepidoptera: Noctuidae).

“…(1) The reduction in fecundity might be due to the undifferentiated ovarioles in adult female moths of S. littoralis as an action of larval treatment with Nerolidol, as reported by some authors for other plant products (Martinez and Van Emden, 2001;Abdelgaleil and El-Sabrout, 2018). (2) The reduction of S. littoralis fecundity, in the current investigation, might be due to the direct disruptive effect of Nerolidol on the reproductive behavior of adult moths (Magierowicz et al, 2019). (3) Nerolidol might cause some disorders in the developing ovarioles during the immature stages (Davey, 1993) including cell death in the germarium, resorption of oocytes in the pre-vitellarium and vitellarium before oviposition (Zhou et al, 2016), the formation of vitellin envelops and undue proliferation of follicle cells sometimes resulting in malformation of the whole ovary (Lucantoni et al, 2006;Khan et al, 2007).…”

Larvacidal Effect of Some Plant Extracts Against Tomato Leaf Miner (Tuta Absoluta Meyrick; Lepidoptera: Gelehiidae)

“…The study conducted by Magierowicz et al (2020) et al, 1999). Nilahyan et al (2012) suggested that among the extracts, the highest rates of mortality were observed from T. vulgaris leaves (95%), and the LD90 of these extracts showed that the T. vulgaris ethanol extract was the most toxic (LD90 = 89383mg/l) on T. absoluta.…”

The disruptive impact of novaluron, a chitin synthesis inhibitor, on the adult performance and reproduction of the black cutworm, Agrotis ipsilon (Hufnagel) (Lepidoptera: Noctuidae)

“…The disruptive impact of novaluron, a chitin synthesis inhibitor, on the adult performance and reproduction of the black cutworm 131 behavioral aspects (Desneux et al, 2007;Magierowicz et al, 2019). In some detail, this fecundity inhibition could be explained by some reasons, as follows.…”