Journal of Chemical Ecology
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Pheromone biosynthesis and role of functional groups in pheromone specificity
Journal of Chemical Ecology - Tập 12 - Trang 335-351 - 1986
The sex attractants for many Lepidoptera are long-chain, monounsaturated acetate esters, alcohols, and aldehydes. In vivo metabolic studies and enzyme analysis in vitro have provided evidence that the aldehyde pheromone of the eastern spruce budworm is synthesized de novo via an acetate ester precursor. Interconversion of the functional groups (ester, alcohol, aldehyde) can explain differences in ...... hiện toàn bộ
Variability in Flavonoid Compounds of Four Tribulus Species: Does it Play a Role in Their Identification by Desert Locust Schistocerca gregaria?
Journal of Chemical Ecology - Tập 24 - Trang 1465-1481 - 1998
We examined how variability in phenolic metabolism of four closely related Tribulus taxa might affect palatability to Schistocerca gregaria. Plants were collected in the Mauritanian breeding areas of the locust. Eighteen flavonoids (caffeoyl derivatives, quercetin glycosides, including rutin, and kaempferol glycosides) were detected with high-performance liquid chromatography in leaf extracts. Pri...... hiện toàn bộ
Effect of sex-pheromone concentration on behavior of three strains of western spruce budworm male moths
Journal of Chemical Ecology - - 1990
The responses of male western spruce budworm moths,Choristoneura occidentalis Freeman, to a range of concentrations of the major sex pheromone, 92∶8 (E/Z)-11-tetradecenal (Ald), in polyvinyl chloride lures, were observed using the electroantennogram technique, a flight tunnel, and field-trapping bioassays. The responses to virgin female moths were also observed in the flight tunnel and field bioas...... hiện toàn bộ
Methyl Jasmonate Changes the Composition and Distribution Rather than the Concentration of Defence Compounds: a Study on Pyrrolizidine Alkaloids
Journal of Chemical Ecology - Tập 45 - Trang 136-145 - 2018
In this study we investigated the effect of methyl jasmonate (MeJA) application on pyrrolizidine alkaloid (PA) concentration and composition of two closely related Jacobaea species. In addition, we examined whether MeJA application affected herbivory of the polyphagous leaf feeding herbivore Spodoptera exigua. A range of concentrations of MeJA was added to the medium of Jacobaea vulgaris and J. aq...... hiện toàn bộ
Radial diffusion method for determining tannin in plant extracts
Journal of Chemical Ecology - - 1987
Semiochemical-Mediated Location of Host Habitat by Apanteles carpatus (Say) (Hymenoptera: Braconidae), a Parasitoid of Clothes Moth Larvae
Journal of Chemical Ecology - - 1997
(7Z)-Tricosene Improves Pheromone Trap Catch of Raspberry Bud Moth, Heterocrossa rubophaga
Journal of Chemical Ecology - Tập 46 - Trang 830-834 - 2020
Heterocrossa rubophaga, the raspberry bud moth, is a pest of commercial Rubus berry crops and wild Rubus species. Its pheromone was initially identified as a single component, (7Z)-nonadecen-11-one. Here we report further investigation of this carposinid pheromone including volatile collection, gland extraction, mass spectrometry, microchemical analysis, electrophysiology and field testing. The al...... hiện toàn bộ
Patterns of scent-mounding in a population of beaver (Castor canadensis)
Journal of Chemical Ecology - - 1980
Within-plant variation in concentrations of amino acids, sugar, and sinigrin in phloem sap of black mustard,Brassica nigra (L.) Koch (Cruciferae)
Journal of Chemical Ecology - Tập 22 Số 6 - Trang 1133-1145 - 1996
Although within-plant variation in the nutrient and allelochemical composition of phloem sap has been invoked to explain patterns of host use by phloem-feeding insects, little is known about within-plant variation in phloem chemistry. Here I describe a new technique in which I use the green peach aphid,Myzus persicae Sulz., to investigate within-plant variation in the concentrations of chemicals i...... hiện toàn bộ
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