abstract：:3,7-Dimethyl-2-undecanol, 3,7,9-trimethyl-2-tridecanol, and 3,7, 11-trimethyl-2-tridecanol were synthesized as racemic mixtures in moderate yields. The alcohols are known precursors of the female sex pheromones of the pine sawfly species Diprion nipponica, Macrodiprion nemoralis, and Microdiprion pallipes, respectivel...

journal_title：Journal of chemical ecology

authors： Hedenström E,Andersson F

更新日期：2002-06-01 00:00:00

abstract：:We conducted defoliation experiments with 7- to 8-year-old clones of Douglas fir [Pseudotsuga menziesii (Mirb.) Franco var. glauca] to assess the role of monoterpenes as a resistance mechanism to western spruce budworm (Choristoneura occidentalis Freeman) defoliation. The grafted clones were derived from mature trees ...

journal_title：Journal of chemical ecology

authors： Chen Z,Kolb TE,Clancy KM

更新日期：2002-05-01 00:00:00

abstract：:Oxytropis lambertii has been considered to be one of the major locoweeds responsible for livestock poisoning on rangelands, but there has been much confusion as to its taxonomic identity. The objective of this study was to conduct a field survey of several populations of each of the three varieties [var. lambertii Pur...

journal_title：Journal of chemical ecology

authors： Ralphs MH,Welsh SL,Gardner DR

更新日期：2002-04-01 00:00:00

abstract：:The salticid spider Cosmophasis bitaeniata preys on the larvae of the green tree ant Oecophylla smaragdina. Gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) reveal that the cuticle of C. bitaeniata mimics the mono- and dimethylalkanes of the cuticle of its prey. Recognition bioassays with extra...

journal_title：Journal of chemical ecology

authors： Allan RA,Capon RJ,Brown WV,Elgar MA

更新日期：2002-04-01 00:00:00

abstract：:Individual analysis of the female sex pheromone of the adzuki bean borer, Ostrinia scapulalis, has shown that the sex pheromone of this species comprised (E)-11-tetradecenyl acetate (E11-14:OAc) and (Z)-11-tetradecenyl acetate (Z11-14:OAc) at variable blend ratios. The pheromone blend could be tentatively categorized ...

journal_title：Journal of chemical ecology

authors： Huang Y,Takanashi T,Hoshizaki S,Tatsuki S,Ishikawa Y

更新日期：2002-03-01 00:00:00

abstract：:The exocrine glandular secretions of leaf beetle larvae of the taxon Chrysomela are well-known defensive devices used against some generalist predators. Salicylaldehyde is the major repellent component of secretions emitted by larvae of Chrysomela vigintipunctata and C. lapponica, which feed on salicin-rich Salicaceae...

journal_title：Journal of chemical ecology

authors： Gross J,Podsiadlowski L,Hilker M

更新日期：2002-02-01 00:00:00

abstract：:Soluble sugars are essential nutrients generally perceived as phagostimulants to most insects studied. However, tannins are known as digestibility reducers, hence deleterious to caterpillar development, and as deterrents as well. Previous work demonstrated that larvae of the polyphagous oblique-banded leafroller, Chor...

journal_title：Journal of chemical ecology

authors： Panzuto M,Mauffette Y,Alber PJ

更新日期：2002-01-01 00:00:00

abstract：:The species of desert-dwelling ants of the Cataglyphis bicolor (Hymenoptera: Formicidae) group are difficult to distinguish by morphological features. Analysis of the secretion from the Dufour glands of workers of a number of colonies was undertaken to see if it provided a clear test of species. Linked 6c-ms showed in...

journal_title：Journal of chemical ecology

authors： Gökçen OA,Morgan ED,Dani FR,Agosti D,Wehner R

更新日期：2002-01-01 00:00:00

abstract：:Bioassays in a Y-tube olfactometer showed that workers of Solenopsis geminata (Hymenoptera: Formicidae) were attracted to venom gland extracts of queens. Gas chromatography coupled mass spectrometry analysis of individual glands of queens of S. geminata showed that the secretion is composed mainly of a large amount of...

journal_title：Journal of chemical ecology

authors： Cruz-López L,Rojas JC,De La Cruz-Cordero R,Morgan ED

更新日期：2001-12-01 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：:The chemical components of tarbush (Flourensia cernua) leaves were fractionated by extracting successively with hexanes, diethyl ether, and ethanol. Volatile profiles of each fraction were identified by using GC-MS. The hexanes fraction contained mostly monoterpenoids, while the ethanol fraction volatiles were primari...

journal_title：Journal of chemical ecology

authors： Tellez M,Estell R,Fredrickson E,Powell J,Wedge D,Schrader K,Kobaisy M

更新日期：2001-11-01 00:00:00

abstract：:The sex pheromone of the citrus fruit borer Ecdytolopha aurantiana has been identified by gas chromatography coupled to an electroantennographic detector (GC-EAD). The electron impact mass spectral (EI-MS) fragmentation of the major EAD-active peak gave identifying features for a monounsaturated acetate. Further analy...

journal_title：Journal of chemical ecology

authors： Leal WS,Bento JM,Murata Y,Ono M,Parra JR,Vilela EF

更新日期：2001-10-01 00:00:00

abstract：:Brook charr (Salvelinus fontinalis) lay their eggs in gravel nests called redds. The nests are not defended for extended periods and the eggs and young may be subject to predation from predators that travel through the substrate into the redd. In this study we tested whether long-term exposure of brook charr eggs to c...

journal_title：Journal of chemical ecology

authors： Mirza RS,Chivers DP,Godin JG

更新日期：2001-09-01 00:00:00

abstract：:Repellency and toxicity of 8 essential oils (vetiver grass, cassia leaf, clove bud, cedarwood, Eucalyptus globules, Eucalyptus citrodora, lemongrass and geranium) were evaluated against the Formosan subterranean termite, Coptotermes formosanus Shiraki. Vetiver oil proved the most effective repellent because of its lon...

journal_title：Journal of chemical ecology

authors： Zhu BC,Henderson G,Chen F,Fei H,Laine RA

更新日期：2001-08-01 00:00:00

abstract：:Brown treesnakes are an invasive species to the island of Guam that have caused extensive ecological and economic damage. Efforts to control the snake population have included trapping using live mouse lures, but for logistical and economic reasons a synthetic lure is needed. When searching for live food, brown treesn...

journal_title：Journal of chemical ecology

authors： Jojola-Elverum SM,Shivik JA,Clark L

更新日期：2001-07-01 00:00:00

abstract：:Pheromone communication systems have a reliable signal with a restricted window of amounts and ratios released and perceived. We propose a model based on a Gaussian response profile that allows a quantification of the response peak (location of optimum) and a measure of the peak width (response window). Interpreting t...

journal_title：Journal of chemical ecology

authors： Schlyter F,Svensson M,Zhang QH,Knízek M,Krokene P,Ivarsson P,Birgersson G

更新日期：2001-07-01 00:00:00

abstract：:Adult females of Monochamus alternatus are known to use palpation to recognize oviposition scars that contain eggs and to be deterred from oviposition. This study investigated the oviposition-deterring activity of a jellylike secretion deposited by the females immediately after oviposition and methanol extracts of fem...

journal_title：Journal of chemical ecology

authors： Anbutsu H,Togashi K

更新日期：2001-06-01 00:00:00

abstract：:A strain of the fungus Fusarium equiseti isolated from soybean cyst nematode secretes nematode-antagonistic compounds. Bioassay-guided fractionation of an extract of the culture broth was undertaken to identify the compounds. Fractions were assayed for activity against a root-knot nematode (Meloidogyne incognita), a p...

journal_title：Journal of chemical ecology

authors： Nitao JK,Meyer SL,Schmidt WF,Fettinger JC,Chitwood DJ

更新日期：2001-05-01 00:00:00

abstract：:Although several studies have elucidated the role of plant epicuticular waxes in host recognition and oviposition by herbivorous insects, there is little known about this subject in Chrysomelidae. In the present study, chemical cues for host recognition behavior and oviposition by the monophagous chrysomelid species C...

journal_title：Journal of chemical ecology

authors： Müller C,Hilker M

更新日期：2001-05-01 00:00:00

abstract：:We investigated the hypothesis that wood-boring beetles in the genus Monochamus (Cerambycidae) utilize pheromones of sympatric bark beetles as host-finding kairomones. All nine bark beetle pheromones tested electrophysiologically were antenally active for both sexes of M. scutellatus, M. clamator, and M. obtusus from ...

journal_title：Journal of chemical ecology

authors： Allison JD,Borden JH,McIntosh RL,de Groot P,Gries R

更新日期：2001-04-01 00:00:00

abstract：:In this study, we compared the effects of several preservation methods on the secondary phenolics of the mature leaves of purple willow (Salix purpurea L., salicaceae) with results obtained with fresh leaf analyses. Conventional freeze-drying, in which the leaves were first frozen with liquid nitrogen and then placed ...

journal_title：Journal of chemical ecology

authors： Julkunen-Tiitto R,Sorsa S

更新日期：2001-04-01 00:00:00

abstract：:Cellulose triacetate was investigated as a chiral stationary phase for preparatively separating the enantiomers of lineatin, frontalin, exo-brevicomin, endo-brevicomin, verbenone, (E)-conophthorin, and grandisol. Tens of milligrams of both enantiomers were efficiently prepared in high percentage enantiomeric excess fr...

journal_title：Journal of chemical ecology

authors： Keeling CI,Ngo HT,Benusic KD,Slessor KN

更新日期：2001-03-01 00:00:00

abstract：:Of the aglycone flavonoids identified in the exudate of cistus ladanifer, two, the flavone apigenin-4'-(O)-methyl and the flavonol kaempferol-3,7-di(O)-methyl inhibit development of the seedlings of Rumex crispus at 0.5 and 1 mM. Additive effects were observed between the major flavonols of the exudate kaempferol-3-(O...

journal_title：Journal of chemical ecology

authors： Chaves N,Sosa T,Escudero JC

更新日期：2001-03-01 00:00:00

abstract：:Volatile components of Pachycoris stallii scent gland secretions and the bug's host plant, Croton californicus, were identified by gas chromatography and mass spectroscopy. The predominant compounds isolated from C. californicus fruit and leaves were beta-myrcene and beta-caryophyllene. Metathoracic gland secretions o...

journal_title：Journal of chemical ecology

authors： Williams L 3rd,Evans PE,Bowers WS

更新日期：2001-02-01 00:00:00

abstract：:Effects of 2-beta-D-glucopyranosyloxy-4-hydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA-Glc) and DIMBOA-Glc N-O-methylated (HDMBOA-Glc), two compounds present in high concentration in maize, were tested on the aphid Metopolophium dirhodum reared on artificial diet. HDMBOA-Glc and DIMBOA-Glc decrease survival of adults ...

journal_title：Journal of chemical ecology

authors： Cambier V,Hance T,De Hoffmann E

更新日期：2001-02-01 00:00:00

abstract：:This study was replicated at two locations in the mountains of central Utah. In 1997, ten uniform plants of tall larkspur (Delphinium barbeyi) in the early bud stage (40 cm in height) were selected at each site and clipped at 5 cm above soil level. In 1998, one stalk from each plant was harvested on a weekly basis; in...

journal_title：Journal of chemical ecology

authors： Ralphs MH,Gardner DR

更新日期：2001-01-01 00:00:00

abstract：:The buffy-headed marmoset (Callithrix flaviceps) is apparently the only predispersal herbivore of the seeds of Siparuna guianensis at the Caratinga Biological Station in southeastern Brazil. Both the fruit receptacles and the frutioles (seeds) of S. guianensis are relatively rich in nutrients such as carbohydrates, pr...

journal_title：Journal of chemical ecology

authors： Simas NK,Ferrari SF,Pereira SN,Leitão GG

更新日期：2001-01-01 00:00:00

abstract：:Female cowpea weevils,Callosobruchus maculatus, produce a sex pheromone that elicits orientation and sexual behavior in males. Bioassay-directed isolation of the sex pheromone was conducted and compounds in the active fraction were identified and synthesized. Volatiles were collected from individual virgin females by ...

journal_title：Journal of chemical ecology

authors： Phillips TW,Phillips JK,Webster FX,Tang R,Burkholder WE

更新日期：1996-12-01 00:00:00

abstract：:Disruption of male Oriental fruit moth orientation to calling females was studied in a wind tunnel by surrounding calling female moths with septa loaded with synthetic pheromone. At the lowest loadings, 0.01 and 0.1µg, which produced release rates well below those of calling females, some males flew to septa instead o...

journal_title：Journal of chemical ecology

authors： Sanders CJ,Lucuik GS

更新日期：1996-11-01 00:00:00

abstract：:The sequence of arrival of the bark beetlesIps typographus andPityogenes chalcographus (Coleoptera: Scolytidae) at traps baited with their synthetic pheromones was monitored with a portable fraction collector. Histograms of the natural arrival patterns of both species were nonrandom and clumped at shorter time scales ...

journal_title：Journal of chemical ecology

authors： Byers JA

更新日期：1996-11-01 00:00:00

abstract：:We characterized the variation in cuticular hydrocarbon mixtures between seven colonies of the Formosan subterranean termite,Coptotermes formosanus Shiraki, from the same population. We report differences between castes, between colonies, and within the population over time to assess seasonality. Colonies ofC. formosa...

journal_title：Journal of chemical ecology

authors： Haverty MI,Grace JK,Nelson LJ,Yamamoto RT

更新日期：1996-10-01 00:00:00

abstract：:Interdigital secretions were collected from eight male white-tailed deer of various ages. Analysis of volatiles was performed by gas chromatography-mass spectrometry with a modified headspace technique. Forty-six volatile compounds were found including alkanes, arenes, aldehydes, ketones, aliphatic acids, esters, pyrr...

journal_title：Journal of chemical ecology

authors： Gassett JW,Wiesler DP,Baker AG,Osborn DA,Miller KV,Marchinton RL,Novotny M

更新日期：1996-09-01 00:00:00

abstract：:The principal volatile component (99 + %) of the sex pheromone glands ofLutzomyia longipalpis from Lapinha, Brazil, has been isolated and characterized as a novel homosesquiterpene with the specific structure proposed as 9-methylgermacrene-B, (E,E)-8-(1-methylethylidenyl)-1,5,10-trimethyl-1,5-cyclodecadiene. ...

journal_title：Journal of chemical ecology

authors： Hamilton JG,Dawson GW,Pickett JA

更新日期：1996-08-01 00:00:00

abstract：:The presence of pheromones produced by larvae ofGlossina morsitans morsitans andG. m. centralis, respectively, which attract gravid females and result in aggregation of pupae, is confirmed. Behavioral experiments indicated that females preferred to larviposit over moist sand conditioned by previously allowing larvae t...

journal_title：Journal of chemical ecology

authors： Saini RK,Hassanali A,Andoke J,Ahuya P,Ouma WP

更新日期：1996-07-01 00:00:00

abstract：:Membrane feeding studies were conducted to determine the effects of raw juices and chemical extracts of leaves of aphid-resistant (ICV-12) and aphid-susceptible (ICV-1) cultivars of cowpea [Vigna unguiculata L. (Walp.)], on the survival, growth, and reproduction of cowpea aphidAphis craccivora Koch. Life table and dem...

journal_title：Journal of chemical ecology

authors： Annan IB,Tingey WM,Schaefers GA,Saxena KN

更新日期：1996-07-01 00:00:00

abstract：:The major component of the sex pheromone of femaleSpodoptera littoralis, (Z,E)-9,11-tetradecadienyl acetate (1), elicited all steps of the male behavioral sequence, i.e., wing fanning and taking flight, oriented upwind flight and arrival to the middle of the tunnel, close approach and contact with the source. The acti...

journal_title：Journal of chemical ecology

authors： Quero C,Lucas P,Renou M,Guerrero A

更新日期：1996-06-01 00:00:00

abstract：:The presence of a stable radical species in both fresh straw and that which had been submerged in aerated water for up to six months has been demonstrated using electron paramagnetic (spin) resonance (EPR or ESR) spectroscopy. A radical signal was associated also with material shown to contain straw lignin markers, wh...

journal_title：Journal of chemical ecology

authors： Pillinger JM,Cooper JA,Harding CJ

更新日期：1996-05-01 00:00:00

abstract：:The effect of protein and birch bark powder (BBP) content of forage on detoxification capacity of root voles (Microtus oeconomus) was studied. Young voles were fed with eight different diets for two weeks. Individuals on low (3%) protein diets had significantly lighter livers and kidneys than those on moderate (6%) or...

journal_title：Journal of chemical ecology

authors： Harju A

更新日期：1996-04-01 00:00:00

abstract：:The effect of cacalol and extracts (water and petroleum ether) derived from the roots ofPsacalium decompositum (Asteraceae) on the germination and radicle growth of two plants.Amaranthus hypochondriacus (Amaranthaceae) andEchinochloa crusgalli (Poaceae), and on the radial growth of four phytopathogenic fungi is descri...

journal_title：Journal of chemical ecology

authors： Anaya AL,Hernández-Bautista BE,Torres-Barragán A,León-Cantero J,Jiménez-Estrada M

更新日期：1996-03-01 00:00:00

abstract：:Hexane extracts of leaves of 307 accessions from 73 host plant species ofHelicoverpa zea were analyzed by gas chromatography (GC) and used forH. zea oviposition and neonate larvae orientation bioassays. The gas chromatographic (GC) retention times of compounds statistically associated with behavioral activity were ide...

journal_title：Journal of chemical ecology

authors： Breeden DC,Young TE,Coates RM,Juvik JA

更新日期：1996-03-01 00:00:00