Olfactory Response of Plutella xylostella (Lepidoptera: Yponomeutidae) Adults to Refugia Plant

Abstract

Selection of refugia plants is an important step when engineering the agroecological system. The refugia plants can be repellent or attractant to insect pests and in many species the role of each plant can be studied using the olfactory responses of the insect to volatile chemical cues emitted by the plant. The objective of this study was to determine the olfactory response of Plutella xylostella (Lepidoptera: Yponomeutidae) adults to several refugia plant candidates. Y-tube olfactometer tests were used to determine responses of P. xylostella to candidate plant species including: Ageratum conyzoides, Galinsoga parviflora, Synedrella nodiflora, Sphagneticola trilobata, Brassica rapa, Rorippa indica, Arachis pintoi, Ocimum basilicum, Apium graveolens, and Portulaca oleracea. Olfactory choice tests were conducted to compare preferences of insect. The results showed that R. indica, G. parviflora, and S. trilobata flowers attracted P. xylostella. R. indica and B. rapa leaves had high attractiveness for P. xylostella adults. At the same time, the A. graveolens, A. conyzoides, and O. basilicum leaves showed potential repellency. The conclusions of this study are R. indica and B. rapa have potential for use as trap crops, while A. graveolens, O. basilicum, and A. conyzoides have potential as repellent plants. Further study is necessary to test the olfactory response of P. xylostella’s natural enemies to these refugia plants.

Diversity of Ant Species (Hymenoptera: Formiciidae) in Flower Plants Combination on Ratoon Sugarcane

“…The value of the Simpsons dominance index was highest in the Z.elegans and T. subulata treatment (0.92) and the lowest in the control treatment (0.87) (Table 2). It was indicated by the presence of refugia plants that can attract ants, one of which was reported by (Cruz et al, 2018;Leksono et al, 2019;Asmoro et al, 2021) reported that extrafloral nectar at the base of the leaves of T. subulata can attract various ants in the planting area.…”

Increasing mustard (Brassica juncea L.) yields through exposure sound and preventive pest management based on refugia plants

“…Refugia plants and pest trap pestrepellent plants and attract natural enemies to live and reproduce in the area so that the presence of natural enemies can balance the pest population at a limit that is not detrimental (Asmoro and Winasa, 2021). This research is necessary because, based on previous research, sound can stimulate the encroachment of phosphorus nutrients and soil microbial populations (Munar et al, 2022) and is associated with decreasing pests (Qi et al, 2009).…”

Attractiveness and toxicity of two insecticides to Tetragonula laeviceps (Apidae: Meliponinae)

“…However, studies on the hazardous effect of pesticides, such as their attractiveness and toxicity to bees, are still limited in Indonesia. Olfactometry is one of the assessment methods that can be used to evaluate the orientation responses to odor [22,23]. The attraction of bees to odor is the initial step in finding food sources (nectar and pollen).…”