Prothoracic gland semiochemicals of green lacewings.

abstract：:FourEscherichia coli strains carrying all the possible combinations of genes controlling sensitivity to near-UV (NUV;nur versusnur (+)) and far-UV (FUV;uvrA6 versusuvrA (+)) were inactivated with broad-spectrum NUV together with specific phototoxins. The inactivation kinetics of the four strains are consistent with th...

journal_title：Journal of chemical ecology

authors： Tuveson RW,Berenbaum MR,Heininger EE

更新日期：1986-04-01 00:00:00

abstract：:Tetrapedia diversipes and other Apidae (Anthophoridae) may be deceived by floral similarities between Malpighiaceae and Orchidaceae of the Oncidiinae subtribe. The latter do not usually exudate floral oils. Thus, visitors may pollinate the flowers in a deceit/food/pollination syndrome. We studied the chemical composit...

journal_title：Journal of chemical ecology

authors： Reis MG,de Faria DA,dos Santos IA,Amaral Mdo C,Marsaioli AJ

更新日期：2007-07-01 00:00:00

abstract：:Solid phase microextraction (SPME) has become a common technique for volatile sampling due to its ease of use and limited technical requirements. The solvent-free nature of SPME is also exceptionally attractive for gas chromatography mass spectrometry (GC/MS) analysis. To ensure efficient transfer of the sample to the...

journal_title：Journal of chemical ecology

authors： Gaffke AM,Alborn HT

更新日期：2021-01-18 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：:Bacteria swim by rotating semirigid, left-handed helical flagellar filaments; counterclockwise (CCW) rotation produces straight swims, known as "runs," and clockwise (CW) rotation generates abrupt changes in direction, known as "tumbles." As a cell moves through its environment, alternately running and tumbling, it de...

journal_title：Journal of chemical ecology

authors： Manson MD

更新日期：1990-01-01 00:00:00

abstract：:In laboratory experiments conducted to compare the kairomonal activity forMicroplitis croceipes (Cresson) of frass fromHeliothis zea (Boddie) larvae fed on different host plants,M. croceipes females responded to extracts of frass from larvae reared on cotton or soybeans but not on corn. The lack of response to frass f...

journal_title：Journal of chemical ecology

authors： Nordlund DA,Ed Sauls C

更新日期：1981-11-01 00:00:00

abstract：:An apparatus was developed for investigating the release rates of pheromone formulations at temperatures and air velocities that correspond with those in the field. Polyurethane foam proved an excellent adsorbent for the recovery of tetradecen-1-ol acetates, allowing high air flows at low differential pressure and wit...

journal_title：Journal of chemical ecology

authors： van der Kraan C,Ebbers A

更新日期：1990-04-01 00:00:00

abstract：:The host selection process ofBlepharipa pratensis (Meigen), a tachinid parasite of the gypsy moth,Lymantria dispar L., was investigated. Once in the host's habitat, and following contact with a recently damaged leaf edge (cut, torn, eaten), the fly orients perpendicular to the edge and moves back and forth with the fr...

journal_title：Journal of chemical ecology

authors： Odell TM,Godwin PA

更新日期：1984-02-01 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：:A sequence of reactions is presented for inverting the configurations of both epoxide carbons in 1,2-disubstituted epoxides. As examples, (+)-disparlure was converted to its enantiomer, (-)-disparlure, andexo-endo conversion of a cyclohexene oxide was demonstrated. ...

journal_title：Journal of chemical ecology

authors： Oliver JE,Waters RM,Harrison DJ

更新日期：1996-02-01 00:00:00

abstract：:Male spruce budworm [Chorisloneura fumiferana (Clem.)] moths were held for 3 hr in a wind tunnel and subjected to various concentrations of background synthetic pheromone. They were then exposed to calling females and their response was recorded. The background pheromone was presented either as discrete turbulent plum...

journal_title：Journal of chemical ecology

authors： Sanders CJ

更新日期：1982-02-01 00:00:00

abstract：:Maize, a genetically diverse crop, is the domesticated descendent of its wild ancestor, teosinte. Recently, we have shown that certain maize landraces possess a valuable indirect defense trait not present in commercial hybrids. Plants of these landraces release herbivore-induced plant volatiles (HIPVs) that attract bo...

journal_title：Journal of chemical ecology

authors： Mutyambai DM,Bruce TJ,Midega CA,Woodcock CM,Caulfield JC,Van Den Berg J,Pickett JA,Khan ZR

更新日期：2015-04-01 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：:The potential for pheromone-based mating disruption of the Brassica pest Contarinia nasturtii was tested, both in small-scale plots with Brussels sprouts and in commercial-scale fields with either broccoli or cauliflower. Experiments in the small-scale plots used laboratory-reared insects released into a previously un...

journal_title：Journal of chemical ecology

authors： Samietz J,Baur R,Hillbur Y

更新日期：2012-09-01 00:00:00

abstract：:In crop plants, both mechanical damage and insect attack trigger rapid changes in gene transcription. We investigated whether insect herbivory differs from a general wound response, and if so, is the induction specific to the pest/host plant interaction? Herbivory by beet armyworm (BAW; Spodoptera exigua) caterpillars...

journal_title：Journal of chemical ecology

authors： Lawrence SD,Novak NG

更新日期：2004-12-01 00:00:00

abstract：:In aquatic environments, chemical cues are believed to be associated with prey response to predation risk, yet few basic cue compositions are known despite the pronounced ecological and evolutionary significance of such cues. Previous work indicated that negatively-charged ions of m/z 501 are possibly a kairomone that...

journal_title：Journal of chemical ecology

authors： Austin CE,March RE,Stock NL,Murray DL

更新日期：2018-02-01 00:00:00

abstract：:Root exudates were collected over a 27 day period from defoliated and non-defoliated Lolium perenne L. plants grown under sterile conditions in microlysimeters. Eleven individual sugars, including both aldehyde and alcohol sugars, were identified and quantified with a gas chromatograph-mass spectrometer (GC-MS). There...

journal_title：Journal of chemical ecology

authors： Clayton SJ,Read DB,Murray PJ,Gregory PJ

更新日期：2008-11-01 00:00:00

abstract：:Sirex noctilio females are known to be attracted to stem sections of stressed pine trees for oviposition. The volatile profiles and attractiveness of Eastern white pine (Pinus strobus) and two chemotypes of Scots pine (P. sylvestris) were compared after stem injection with herbicide. In general, trap captures on herbi...

journal_title：Journal of chemical ecology

authors： Böröczky K,Zylstra KE,McCartney NB,Mastro VC,Tumlinson JH

更新日期：2012-02-01 00:00:00

abstract：:The suitability of the Bradford protein assay for measuring plant protein was evaluated and a standard method developed. The assay involves extraction of dried, fresh, or frozen plant material in 0.1 NaOH for 30 min. Replicate 100-μl aliquots of centrifuged supernatant are assayed with 5 ml Bio-Rad Bradford dye reagen...

journal_title：Journal of chemical ecology

authors： Jones CG,Daniel Hare J,Compton SJ

更新日期：1989-03-01 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：:The effect of volatiles of diethyl ether-extracted dominant male mouse lemur urine on conspeciflc testosterone plasma concentrations was determined in an apparatus permitting olfactory isolation of the experimental subjects. Two experimental groups were exposed to air odorized with either ether or aqueous extracts of ...

journal_title：Journal of chemical ecology

authors： Perret M,Schilling A

更新日期：1987-03-01 00:00:00

abstract：:The metapleural gland is exclusive to ants, and unusual among exocrine glands in having no mechanism for closure and retention of secretion. As yet, no clear conclusion has been reached as to the function of metapleural gland secretion. Metapleural gland secretions were investigated for fungus-growing ants representin...

journal_title：Journal of chemical ecology

authors： Vieira AS,Morgan ED,Drijfhout FP,Camargo-Mathias MI

更新日期：2012-10-01 00:00:00

abstract：:Beetles share with other eukaryotes an innate immune system that mediates endogenous defense against pathogens. In addition, larvae of some taxa produce fluid exocrine secretions that contain antimicrobial compounds. In this paper, we provide evidence that larvae of the brassy willow leaf beetle Phratora vitellinae co...

journal_title：Journal of chemical ecology

authors： Gross J,Schumacher K,Schmidtberg H,Vilcinskas A

更新日期：2008-02-01 00:00:00

abstract：:When provided a choice between grass species with C3 or C4 photosynthetic pathways, larvae of range caterpillar,Hemileuca oliviae Cockerell, selected C4 grasses. The basis for host selection was examined by conducting analyses of moisture, crude protein, total available carbohydrate, sucrose, glucose, astringency, con...

journal_title：Journal of chemical ecology

authors： Capinera JL,Renaud AR,Roehrig NE

更新日期：1983-10-01 00:00:00

abstract：:Olfactory responses of 72- to 96-hr-old, 24-hr starved adult male, female, or mixed-sex groups of the red flour beetle,Tribolium castaneum (Herbst), to volatiles from wheat and millet kernels, certain milled fractions, and solvent extracts were recorded by using a lightsensitive apparatus. Wheat-germ volatiles from in...

journal_title：Journal of chemical ecology

authors： Seifelnasr YE,Hopkins TL,Mills RB

更新日期：1982-12-01 00:00:00

abstract：:Plants have evolved intricate defence strategies against herbivore attack which can include activation of defence in response to stress-related volatile organic compounds (VOCs) emitted by neighbouring plants. VOCs released by intact molasses grass (Melinis minutiflora), have been shown to repel stemborer, Chilo parte...

journal_title：Journal of chemical ecology

authors： Tolosa TA,Tamiru A,Midega CAO,Van Den Berg J,Birkett MA,Woodcock CM,Bruce TJA,Kelemu S,Pickett JA,Khan ZR

更新日期：2019-12-01 00:00:00

abstract：:The olfactory system of living organisms can accurately discriminate numerous odors by recognizing the pattern of activation of several odorant receptors (ORs). Thus, development of an odorant sensor array based on multiple ORs presents the possibility of mimicking biological odor discrimination mechanisms. Recently, ...

journal_title：Journal of chemical ecology

authors： Termtanasombat M,Mitsuno H,Misawa N,Yamahira S,Sakurai T,Yamaguchi S,Nagamune T,Kanzaki R

更新日期：2016-07-01 00:00:00

abstract：:In field experiments in the Okanagan Valley, British Columbia, the pheromone blend of (11Z)-tetradecen-1-ol acetate (Z11-14:OAc), (11E)-tetradecen-1-ol acetate (E 11-14:OAc), (9Z)-tetradecen-1-ol acetate (Z9-14:OAc) and dodecan-1-ol acetate (12: OAc) at a 100∶64∶2∶1 ratio (western FTLR blend) attracted significantly m...

journal_title：Journal of chemical ecology

authors： Deland JP,Gries R,Gries G,Judd GJ,Roitberg BD

更新日期：1993-12-01 00:00:00

abstract：:The egg dispersion strategy of the olive fruit flyDacus oleae, which is dependent on chemicals from the fruit, was investigated. In particular, the exact role ofo-diphenolic compounds, such as the typical olive glucosides, oleuropein and demethyloleuropein, and their derivatives was clarified. It appears that the stro...

journal_title：Journal of chemical ecology

authors： Lo Scalzo R,Scarpati ML,Verzegnassi B,Vita G

更新日期：1994-08-01 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