Effect of parthenin--a sesquiterpene lactone from Parthenium hysterophorus--on early growth and physiology of Ageratum conyzoides.

abstract：:Multicomponent pheromone systems are common in many insect species. As our knowledge about the number of different chemical compounds actually involved in a particular communication system increases, so too does the need for an efficient neural mechanism for the encoding of behaviorially relevant odor compounds. Here ...

journal_title：Journal of chemical ecology

authors： O'Connell RJ,Beauchamp JT,Grant AJ

更新日期：1986-02-01 00:00:00

abstract：:In bioassays conducted with walking beetles in the laboratory (S)-(+)-, (R)-(-)-, and (±)-ipsdienol were attractive alone, but reduced the attraction of both sexes of the mountain pine beetle,Dendroctonus ponderosae Hopkins, to extracts of female frass. Field trapping studies indicated that attraction ofD. ponderosae ...

journal_title：Journal of chemical ecology

authors： Hunt DW,Borden JH

更新日期：1988-01-01 00:00:00

abstract：:We have developed a flexible, moderately priced, behavioral analysis system which has been used to determine the response of salmonids to certain olfactory stimulants. The system, which we call ITS for interactive computer-video tracking system, consists of a 128K Apple IIe computer with software, a video camera and v...

journal_title：Journal of chemical ecology

authors： Royce-Malmgren CH,Watson WH 3rd

更新日期：1987-05-01 00:00:00

abstract：:By emitting scent resembling that of organic material suitable for oviposition and/or consumption by flies, sapromyophilous flowers use these flies as pollinators. To date, intensive scent analyses of such flowers have been restricted to Apocynaceae, Annonaceae, and Araceae. Recent studies have suggested that the wide...

journal_title：Journal of chemical ecology

authors： Chen G,Jürgens A,Shao L,Liu Y,Sun W,Xia C

更新日期：2015-03-01 00:00:00

abstract：:Evidence is presented indicating the presence of the tick sex pheromone, 2,6-dichlorophenol in lipid droplets in the foveal glands ofDermacentor variabilis (Say) andDermacentor andersoni Stiles. The pheromone appears to be dissolved in the lipid droplets. The droplets consist of neutral lipids, mostly triacylglyceride...

journal_title：Journal of chemical ecology

authors： Sonenshine DE,Gainsburg DM,Rosenthal MD,Silverstein RM

更新日期：1981-03-01 00:00:00

abstract：:An inexpensive, silent, maintenance-free suction/adsorption system is described for efficiently collecting submicrogram quantities of odors over a wide range of volatilities under field conditions. The samples can later be submitted to gas chromatographic-mass spectrometric analyses. An example is given with odors sam...

journal_title：Journal of chemical ecology

authors： Cane JH,Jonsson T

更新日期：1982-01-01 00:00:00

abstract：:High foliar phenolics are generally assumed to increase resistance to insect herbivores, but recent studies show that tobacco lines modified to over- and underexpress phenolics do not exhibit higher constitutive resistance to caterpillars. This is contrary to the expectation that ingestion of tobacco phenolics, partic...

journal_title：Journal of chemical ecology

authors： Johnson KS,Felton GW

更新日期：2001-12-01 00:00:00

abstract：:Electroantennograms (EAGs) were recorded from male and female moths of two sympatric leaf folder species,Cnaphalocrocis medinalis (Gue-née) andMarasmia patnalis Bradley (Lepidoptera: Pyralidae) to 91 volatile chemicals of plant origin. Responses of both leaf folder species were similar to all compounds except to three...

journal_title：Journal of chemical ecology

authors： Ramachandran R,Khan ZR,Caballero P,Juliano BO

更新日期：1990-09-01 00:00:00

abstract：:The sex pheromone of the hibiscus flower borer Rehimena surusalis (Walker) (Lepidoptera: Crambidae) was analyzed by gas chromatography with electroantennographic detection (GC-EAD) and GC-mass spectrometry (GC/MS). Three EAD-active components were found in crude pheromone gland extracts of calling females. GC/MS and G...

journal_title：Journal of chemical ecology

authors： Honda H,Yamasaki R,Sumiuchi Y,Uehara T,Matsuyama S,Ando T,Naka H

更新日期：2015-11-01 00:00:00

abstract：:Optically pure synthetic enantiomers of (E)-conophthorin [(E)-7-methyl-1,6-dioxaspiro[4.5]decane], one of the volatiles affecting coniferophagous bark beetles, were tested on antennae of Ips typographus, I. duplicatus, I. subelongatus, Dendroctonus micans, and five Scolytus spp. by using combined gas chromatography-el...

journal_title：Journal of chemical ecology

authors： Zhang QH,Tolasch T,Schlyter F,Francke W

更新日期：2002-09-01 00:00:00

abstract：:Oxidative responses of plants to pathogens and other environmental stresses have received considerable recent attention. We propose that an oxidative response also occurs following attack by herbivores. Our data strongly indicate a shift in the oxidative status of soybean following herbivory by the insectHelicoverpa z...

journal_title：Journal of chemical ecology

authors： Bi JL,Felton GW

更新日期：1995-10-01 00:00:00

abstract：:The ripe fruit ofMorinda citrifolia, host plant forDrosophila sechellia is highly toxic for three closely related species (D. melanogaster, D. simulans, andD. mauritiana). Green and rotten fruits are not toxic for all species tested. Short fatty acids were found to be present in large quantities in the extract of the ...

journal_title：Journal of chemical ecology

authors： Legal L,Chappe B,Jallon JM

更新日期：1994-08-01 00:00:00

abstract：:A compiled program, JCE-REFS.EXE (coded in the QuickBASIC language), for use on IBM-compatible personal computers is described. The program converts a DOS text file of current B-I-T-S (BIOSIS Information Transfer System) or BIOSIS Previews references into a DOS file of citations, including abstracts, in a general styl...

journal_title：Journal of chemical ecology

authors： Byers JA

更新日期：1992-09-01 00:00:00

abstract：:Jasmonic acid (JA) is a key molecule initiating plant defensive responses to herbivory. Our previous work has shown that this phytohormone is often present at high concentrations in eggs and neonates of lepidopteran species. In this work, we document the concentrations of JA found in various tissues of larval H. vires...

journal_title：Journal of chemical ecology

authors： Tooker JF,De Moraes CM

更新日期：2006-10-01 00:00:00

abstract：:The Dufour's gland of the parasitic waspNemeritis (= Venturia) canescens (Grav.) was shown by gas chromatography and mass spectrometry to contain a mixture of C21, C23, and C25 saturated and monounsaturated hydrocarbons. The main component (62%) was (Z)-10-tricosene. The biological activity of the components is discus...

journal_title：Journal of chemical ecology

authors： Mudd A,Fisher RC,Smith MC

更新日期：1982-07-01 00:00:00

abstract：:Courtship inCardiochiles nigriceps (Viereck) (Hymenoptera: Braconidae) involves male attraction to females and male antennation of females followed by mounting and copulation. Once the female is located, antennation and mounting of the female are mediated by the hydrocarbon fraction of female's Dufour's gland and cuti...

journal_title：Journal of chemical ecology

authors： Syvertsen TC,Jackson LL,Blomquist GJ,Vinson SB

更新日期：1995-12-01 00:00:00

abstract：:The enantiomers of analogs of (Z)-5-decenyl acetate, a pheromone component ofAgrotis segetum, substituted by a methyl group in the 2, 3, 4, 7, and 8 positions and dimethyl substituted in the 4,7 positions, have been synthesized and studied by an electrophysiological single-cell technique and by molecular mechanics cal...

journal_title：Journal of chemical ecology

authors： Jönsson S,Malmström T,Liljefors T,Hansson BS

更新日期：1993-03-01 00:00:00

abstract：:In nature, parasitoid wasps encounter and sometimes show oviposition behavior to nonhost species. However, little is known about the effect of such negative incidences on their subsequent host-searching behavior. We tested this effect in a tritrophic system of maize plants (Zea mays), common armyworms (hosts), tobacco...

journal_title：Journal of chemical ecology

authors： Steven S,Uefune M,Ozawa R,Takabayashi J,Kainoh Y

更新日期：2019-04-01 00:00:00

abstract：:Leaves of Chrysanthemum morifolium cv. Ramat were extracted sequentially with hexane, ethyl acetate, and methanol. The methanol fraction, when incorporated into artificial diet was found to reduce the growth of cabbage looper (Trichoplusia ni Hubner) larvae at concentrations between 500 and 5000 ppm of diet. Fractiona...

journal_title：Journal of chemical ecology

authors： Beninger CW,Abou-Zaid MM,Kistner AL,Hallett RH,Iqbal MJ,Grodzinski B,Hall JC

更新日期：2004-03-01 00:00:00

abstract：:The promethea moth Callosamia promethea is one of three species of silkmoths from the genus Callosamia that occur in North America. Cross attraction of males to heterospecific calling females has been observed in the field, and hybrid progeny have been produced by pairing heterospecifics in captivity. These observatio...

journal_title：Journal of chemical ecology

authors： Gago R,Allison JD,McElfresh JS,Haynes KF,McKenney J,Guerrero A,Millar JG

更新日期：2013-10-01 00:00:00

abstract：:2,4-Dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA), the major hydroxamic acid present in corn, and its tritiated derivative, were prepared synthetically for use in the determination of the toxicokinetics of this insect deterrent in the European corn borer (ECB),Ostrinia nubilalis. In growth studies with DIMBOA (0, ...

journal_title：Journal of chemical ecology

authors： Campos F,Atkinson J,Arnason JT,Philogène BJ,Morand P,Werstiuk NH,Timmins G

更新日期：1989-07-01 00:00:00

abstract：:Understanding the coevolution of pathogens and their associated mycoflora depend upon a proper elucidation of the basis of their chemical communication. In the case of pine wilt disease, the mutual interactions between cerambycid beetles, invasive pathogenic nematodes, (Bursaphelenchus xylophilus) and their symbiotic ...

journal_title：Journal of chemical ecology

authors： Zhao L,Ahmad F,Lu M,Zhang W,Wickham JD,Sun J

更新日期：2018-08-01 00:00:00

abstract：:Latex occurs in 10% of plant families, has evolved independently many times, and is the most effective defense of milkweeds against its chewing herbivores. Here we report on new experiments on the heritability and inducibility of latex in several milkweed species. In addition, we review what is known about the genetic...

journal_title：Journal of chemical ecology

authors： Agrawal AA,Hastings AP

更新日期：2019-12-01 00:00:00

abstract：:Male pink bollworm,Pectinophora gossypiella, were tested in a sustained flight tunnel to 119 blend-dosage combinations of the sex pheromone components, (Z,Z)- and (Z,E)-7,11-hexadecadienyl acetates, which are released by conspecific females in a 61∶39 ratio. Hierarchical cluster analysis was used to define an area of ...

journal_title：Journal of chemical ecology

authors： Linn CE Jr,Roelofs WL

更新日期：1985-11-01 00:00:00

abstract：:Coupled gas chromatographic (GC)-electroantennographic detection (EAD) analyses of ovipositor extract of calling Hessian fly, Mayetiola destructor, females revealed that seven compounds elicited responses from male antennae. Four of the compounds-(2S)-tridec-2-yl acetate, (2S,10Z)-10-tridecen-2-yl acetate, (2S,10E)-10...

journal_title：Journal of chemical ecology

authors： Andersson MN,Haftmann J,Stuart JJ,Cambron SE,Harris MO,Foster SP,Franke S,Francke W,Hillbur Y

更新日期：2009-01-01 00:00:00

abstract：:Investigation of the lipid extract of the Australian chrysomelid beetle,Monolepta australis, has revealed a novel homologous series of long-chain, unsaturated-saturated dialkyl ethers in the cuticular wax. Gas chromatography-mass spectrometry, proton magnetic resonance, infrared spectroscopy, and chemical degradation ...

journal_title：Journal of chemical ecology

authors： Southwell IA,Stiff IA

更新日期：1989-01-01 00:00:00

abstract：:The behavioral response of female alfalfa seed chalcids is dependent on the polarization of sky light when exposed to olfactory stimuli between 1100 and 1500 hr. Females made no orientation flights to or landings on eight unbaited targets, but when half the targets were baited with the host-plant odor of hexyl acetate...

journal_title：Journal of chemical ecology

authors： Kamm JA

更新日期：1990-02-01 00:00:00

abstract：:The sex pheromone ofCydia toreuta (Grote), the eastern pine seedworm, was investigated using electroantennogram (AG) measurements, gas chromatography (combined GC-FID-EAD) measurements, and field tests. (E,Z)-8,10-dodecadienyl acetate (E,Z8,10-12:Ac) and (E,E)-8,10-dodecadienyl actetate (E,E8,10-12: Ac) produced both ...

journal_title：Journal of chemical ecology

authors： Katovich SA,Swedenborg PD,Giblin M,Underhill EW

更新日期：1989-02-01 00:00:00

abstract：:Many species of insects are known to produce and secrete benzoquinone derivatives. These compounds are usually defined as "defense chemicals." However, in many cases, it has not been determined what the chemicals are meant to defend against. Tribolium beetles produce up to three benzoquinones, but their specific funct...

journal_title：Journal of chemical ecology

authors： Yezerski A,Ciccone C,Rozitski J,Volingavage B

更新日期：2007-06-01 00:00:00

abstract：:Insects are the largest and most diverse group of organisms on earth, with over 1,000,000 species identified to date. Stick insects ("walkingsticks" or "phasmids", Order Phasmatodea) are known for and name-derived from their camouflage that acts as a primary line of defense from predation. However, many species also p...

journal_title：Journal of chemical ecology

authors： Dossey AT,Whitaker JM,Dancel MC,Vander Meer RK,Bernier UR,Gottardo M,Roush WR

更新日期：2012-09-01 00:00:00