Host location inOlesicampe monticola, a parasite of larvae of larch sawflyCephalcia lariciphila.

abstract：:The role of intracellular symbionts contributing to their host has been investigated in the planthoppers,Nilaparvata lugens Stal andLaodelphax striatellus Fallen. We have found that the isolated yeastlike symbionts, identified as a member of the genusCandida, from the host's egg produce ergosterol when cultured. A com...

journal_title：Journal of chemical ecology

authors： Eya BK,Kenny PT,Tamura SY,Ohnishi M,Naya Y,Nakanishi K,Sugiura M

更新日期：1989-01-01 00:00:00

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：:Traps baited with semiochemicals are often used to investigate the chemical ecology of scolytids and associated insects. One statistical problem frequently encountered in these studies are treatments that catch no insects and, thus, have zero mean and variance, such as blank or control traps. A second problem is the u...

journal_title：Journal of chemical ecology

authors： Reeve JD,Strom BL

更新日期：2004-08-01 00:00:00

abstract：:Artemisinin, a sesquiterpene lactone produced in the leaves ofArtemisia annua, was evaluated for its phytotoxicity in mono- and dicotyledonous plants. Artemisinin inhibited seed germination, seedling growth, and root induction in all species tested. The concentration of artemisinin required for 50% inhibition ofLemna ...

journal_title：Journal of chemical ecology

authors： Chen PK,Leather GR

更新日期：1990-06-01 00:00:00

abstract：:Herbivore-induced plant volatiles (HIPVs) are important cues for natural enemies to find their hosts. HIPVs are usually present as blends and the effects of combinations of individual components are less studied. Here, we investigated plant volatiles in a tritrophic system, comprising the parasitoid wasp Lytopylus ruf...

journal_title：Journal of chemical ecology

authors： Liu CM,Matsuyama S,Kainoh Y

更新日期：2019-08-01 00:00:00

abstract：:Prior electrophoretic and morphological studies have identified two closely related, economically important tephritid flies,R. mendax (Curran) andR. pomonella (Walsh), which infest the fruits of ericaceous and rosaceous plants, respectively. Further studies also have shown consistent differences among these species in...

journal_title：Journal of chemical ecology

authors： Frey JE,Bierbaum TJ,Bush GL

更新日期：1992-11-01 00:00:00

abstract：:Bees of the genusTrigona and subgenusTrigona possess volatile materials in their mandibular glands, used as alarm substances and as marking pheromones. Heads of workers ofTrigona fulviventris were analyzed by gas chromatography-mass spectrometry. The two major volatile components were nerol (∼ 50%), and octyl caproate...

journal_title：Journal of chemical ecology

authors： Johnson LK,Wiemer DF

更新日期：1982-09-01 00:00:00

abstract：:The bitter and related constituents have been isolated fromVernonia amygdalina (Compositae), a plant ingested by wild chimpanzees possibly suffering from parasite-related diseases in the Mahale Mountains National Park, Tanzania. Isolated from the plant were four known sesquiterpene lactones, seven new steroid glucosid...

journal_title：Journal of chemical ecology

authors： Ohigashi H,Huffman MA,Izutsu D,Koshimizu K,Kawanaka M,Sugiyama H,Kirby GC,Warhurst DC,Allen D,Wright CW,David Phillipson J,Timon-David P,Delmas F,Elias R,Balansard G

更新日期：1994-03-01 00:00:00

abstract：:All possible isomeric mono-methylpentacosanes as well as 2,6-, 2,8-, 2,10-, 2,12-, and 2,14-dimethylheptacosane were synthesized. The [(13)C]NMR shifts and the Kovats indices were determined, and the relationship to separation of isomeric mixtures of insect cuticular waxes are discussed. When several homologous series...

journal_title：Journal of chemical ecology

authors： George Pomonis J,Hakk H,Fatland CL

更新日期：1989-09-01 00:00:00

abstract：:Plants synthesize a wide range of bioactive secondary metabolites to defend against pests and pathogens. Red alder (Alnus rubra) bark, root, and leaf extract have a long history of use in traditional medicine and hygiene. Diarylheptanoids, especially oregonin ((5S)-1,7-bis(3,4-dihydroxyphenyl)-5-(β-D-xylopyranosyloxy)...

journal_title：Journal of chemical ecology

authors： Lea CS,Bradbury SG,Constabel CP

更新日期：2021-01-21 00:00:00

abstract：:Olfactometric bioassays showed that nymphs of crowded desert locusts,Schistocerca gregaria, aggregated in response to volatiles derived from their feces and to volatiles emitted from the feces of young adults, but were indifferent to volatiles emitted by older adult feces. On the other hand, young and older adults wer...

journal_title：Journal of chemical ecology

authors： Obeng-Ofori D,Torto B,Njagi PG,Hassanali A,Amiani H

更新日期：1994-08-01 00:00:00

abstract：:Cuticular hydrocarbons are among the prime candidates for nestmate recognition in social insects. We analyzed the variation of cuticular hydrocarbons in the termite species M. subhyalinus in West Africa (Comoë National Park) on a small spatial scale (< 1 km). We found considerable variation in the composition of cutic...

journal_title：Journal of chemical ecology

authors： Kaib M,Jmhasly P,Wilfert L,Durka W,Franke S,Francke W,Leuthold RH,Brandl R

更新日期：2004-02-01 00:00:00

abstract：:Holcus lanatus, a temperate grass, was found to contain low but measurable concentrations of condensed tannins (CT), according to the vanillin-HCl and the butanol-HCl methods. The variation in CT concentrations between different types of tissue including leaf age and reproductive versus nonreproductive tissue was exam...

journal_title：Journal of chemical ecology

authors： Iason GR,Hodgson J,Barry TN

更新日期：1995-08-01 00:00:00

abstract：:The role of volatile infochemicals emitted by feces of larvae in the host-searching behavior of the parasitoidCotesia rubecula was evaluated during single- and dual-choice tests inside a wind tunnel. The following treatments were tested: feces produced by second and fourth instars ofPieris rapae (preferred host), seco...

journal_title：Journal of chemical ecology

authors： Agelopoulos NG,Dicke M,Posthumus MA

更新日期：1995-11-01 00:00:00

abstract：:Much of the growing interest in avian chemical signals has focused on the role of kin recognition or mate attraction, often with an emphasis on males, with uropygial gland secretions perhaps providing information about an individual's identity and quality. Yet, data collected to date suggest sexual dimorphism in uropy...

journal_title：Journal of chemical ecology

authors： Whittaker DJ,Hagelin JC

更新日期：2021-01-01 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：:Seven volatile compounds identified from the headspace of whole wheat bread dough were investigated for their role in attractingGlischrochilus quadrisignatus andG. fasciatus in the field. Traps baited with either whole wheat bread dough or a synthetic seven-component bread dough odor caught similar numbers of these be...

journal_title：Journal of chemical ecology

authors： Lin H,Phelan PL

更新日期：1991-12-01 00:00:00

abstract：:Several properties of the compound 3,4-dihydro-2H-pyrrole(A1-pyrroline), which has been reported as a component of the male-produced Mediterranean fruit fly pheromone, have been determined by [(1)H]- and [(13)C]nuclear magnetic resonance spectroscopy. The stability of Δ(1)-pyrroline in several solvents and at moderate...

journal_title：Journal of chemical ecology

authors： Baker JD,Heath RR,Millar JG

更新日期：1992-09-01 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：:The bark beetleIps pini (Say) displays variation in its response to and production of enantiomeric blends of its pheromone ipsdienol. One of the principal predators ofIps pini isThanasimus dubius (F.), which uses ipsdienol as a kairomone for prey location. During 1988 and 1989, in Wisconsin and Michigan, the response ...

journal_title：Journal of chemical ecology

authors： Herms DA,Haack RA,Ayres BD

更新日期：1991-08-01 00:00:00

abstract：:Cuticular hydrocarbons play a significant role in the regulation of cuticular permeability and also in the chemical communication of insects. In the parasitoid Lariophagus distinguendus (Hymenoptera: Pteromalidae), male courtship behavior is mediated by a female-produced sex pheromone. Previous studies have shown that...

journal_title：Journal of chemical ecology

authors： Steiner S,Mumm R,Ruther J

更新日期：2007-04-01 00:00:00

abstract：:The pheromone-mediated flight and landing behaviors of maleOstrinia nubilalis were studied in a wind tunnel. The pheromone source was placed in the middle of an 18 × 18-cm horizontal surface, and a smaller surface placed 4, 18, or 36 cm downwind. The smaller surface did not appear to affect significantly the flight tr...

journal_title：Journal of chemical ecology

authors： Foster SP,Frérot B

更新日期：1994-09-01 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：:The structure elucidation of sex pheromones of Lepidoptera by a solid-sample injection technique in conjunction with capillary gas chromatography is described. The applicability of this method in GC and GC-MS modes was demonstrated by reanalyzing the sex attractants of females ofOstrinia nubilalis andBombyx mori. The ...

journal_title：Journal of chemical ecology

authors： Attygalle AB,Herrig M,Vostrowsky O,Bestmann HJ

更新日期：1987-05-01 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：:Many species of longhorn beetles (Coleoptera: Cerambycidae) utilize male-produced aggregation-sex pheromones that attract both sexes. However, the reasons why and the details of how this type of pheromone is used by cerambycids and other coleopteran species that utilize analogous male-produced pheromones remain unclea...

journal_title：Journal of chemical ecology

authors： Collignon RM,Cale JA,McElfresh JS,Millar JG

更新日期：2019-03-01 00:00:00

abstract：:This work reports the development and use of techniques for characterizing volatile chemicals emitted by the multicolored Asian lady beetle, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae), in an effort to identify the semiochemicals involved in establishment and persistence of overwintering beetle aggregations...

journal_title：Journal of chemical ecology

authors： Brown AE,Riddick EW,Aldrich JR,Holmes WE

更新日期：2006-11-01 00:00:00

abstract：:Several unsaturated aldehydes are produced from polyunsaturated fatty acids via the lipoxygenase pathway when soybean (Glycine max) plants are wounded mechanically or by pathogens. The effects of four of these aldehydes were examined on the growth of isolated fungal cultures ofColletotrichum truncatum, Rhizoctonia sol...

journal_title：Journal of chemical ecology

authors： Vaughn SF,Gardner HW

更新日期：1993-10-01 00:00:00

abstract：:Tannins, a diverse group of water-soluble phenolics with high affinity to proteins, are widely distributed in various parts of plants, and have negative effects in herbivores after ingestion. Some mammalian species are thought to counteract tannins by secreting tannin-binding salivary proteins (TBSPs). Several types o...

journal_title：Journal of chemical ecology

authors： Shimada T

更新日期：2006-06-01 00:00:00

abstract：:Jasmonic acid (JA) is a key molecule initiating plant defensive responses to attack by pathogens and herbivores. This phytohormone is produced at sites of insect damage and is ingested by feeding insects, but its subsequent occurrence in insect tissues remains to be studied. We report the presence of JA in eggs and ne...

journal_title：Journal of chemical ecology

authors： Tooker JF,De Moraes CM

更新日期：2005-11-01 00:00:00