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BIOLOGICAL ASPECTS OF ANTIFEEDANTS [PDF]

open access: yesEntomologia Experimentalis et Applicata, 1982
Certain chemicals of plant origin may inhibit food intake in phytophagous insects. Such antifeedants act at low concentrations and are perceived by specialized deterrent receptors or by their modifying effect on normal chemosensory input. In some cases habituation to the presence of antifeedants occurs. When we want to find more chemicals which fulfill
openaire   +2 more sources

Chemical Defense of Yacón (Smallanthus sonchifolius) Leaves against Phytophagous Insects: Insect Antifeedants from Yacón Leaf Trichomes

open access: yesPlants, 2020
Yacón is a perennial crop with high insect resistance. Its leaves have many glandular trichomes, which may be related to pest resistance. In order to collect the constituents of glandular trichomes, leaves were rinsed using dichloromethane (DCM) to ...
Kaisei Tsunaki, Masanori Morimoto
doaj   +1 more source

Insecticidal and Antifeedant Activities of Malagasy Medicinal Plant (Cinnamosma sp.) Extracts and Drimane-Type Sesquiterpenes against Aedes aegypti Mosquitoes

open access: yesInsects, 2019
The overuse of insecticides with limited modes of action has led to resistance in mosquito vectors. Thus, insecticides with novel modes of action are needed.
Edna Alfaro Inocente   +8 more
doaj   +1 more source

Contact Toxicity, Antifeedant Activity, and Oviposition Preference of Osthole against Agricultural Pests

open access: yesInsects, 2023
Osthole, the dominant bioactive constituent in the Cnidium monnieri, has shown acute pesticidal activities. However, its detailed toxicity, antifeedant, and oviposition preference effects against agricultural pests have not been fully understood ...
Fang Dong   +6 more
doaj   +1 more source

Photomediated Transformation of Salannin, a Tetranortriterpenoid from Azadirachta indica A. Juss

open access: yesMolecules, 2001
Photolysis of Salannin (1), an important bioactive compound from Azadirachta indica A.Juss (Neem), affords Δ17-isosalanninolide (2), a hitherto unknown compound, along with isosalanninolide (3) and salanninolide (4).
V. Kasinath   +2 more
doaj   +1 more source

Bioactivity of Sweet Flag (Acorus calamus Linnaeus) Essential Oils against Spodoptera litura Fabricius (Lepidoptera: Noctuidae)

open access: yesJournal of Tropical Life Science, 2016
The study aims to determine the chemical compounds, toxicity, and antifeedant activity of sweet flag (Acorus calamus) essential oils against third instar larvae of Spodoptera litura.
Dewi Melani   +2 more
doaj   +1 more source

Antifeedant Activities of Lignans from Stem Bark of Zanthoxylum armatum DC. against Tribolium castaneum

open access: yesMolecules, 2018
The speciation of a methanolic extract of Zanthoxylum armatum stem bark has enabled the isolation and characterization of 11 known lignans. Among them, five compounds (6, 8–11) are reported in this plant for the first time. All of the chemical structures
Wenjuan Zhang   +9 more
doaj   +1 more source

Antifeedant and Repellent Effects of Neotropical Solanum Extracts on Drywood Termites, (Cryptotermes brevis Walker, Isoptera: Kalotermitidae)

open access: yesSociobiology, 2015
Antifeedant and repellent effects of two different extracts from native Solanum species Solanum bistellatum and Solanum sisymbrifolium on Cryptotermes brevis were evaluated.
Vania Rech-Cainelli   +8 more
doaj   +1 more source

The botanical eurycomanone is a potent growth regulator of the diamondback moth

open access: yesEcotoxicology and Environmental Safety, 2021
Eurycomanone is a quassinoid compound that is derived from Eurycoma longifolia, and it is often used as an indicator to evaluate the active ingredients of Eurycoma longifolia.
Xuehua Shao   +5 more
doaj   +1 more source

Bioprospecting endophytic fungi for antifeedants and larvicides and their enhancement by gamma irradiation

open access: yesAMB Express, 2022
Key points Three promising fungal endophytes with antifeedant and larvicidal activities were reported. The antifeedant and larvicidal activities were intensified following exposure of fungal spores to 1000 Gy gamma rays.
Magdia A. Hazaa   +5 more
doaj   +1 more source

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