Abstract：
:The free-living soil nematodeCaenorhabditis elegans forms a nonfeeding dispersal stage at the second molt called the dauer larva when exposed to environmental cues indicating crowding and limited food. An improved bioassay, tenfold more sensitive than that used previously, has been used in the characterization of the two chemical cues which act competitively in controlling this developmental process. The pheromone concentration provides a measure of the population density; it enhances dauer larva formation, and inhibits recovery (exit) from the dauer stage. The pheromone is a family of related molecules which are nonvolatile, very stable, and possess physical and Chromatographie properties similar to those of hydroxylated fatty acids and bile acids. A food signal, with effects on development opposite those of the pheromone, is produced by bacteria, and is also present in yeast extract. In contrast to the pheromone, the food signal is a labile substance which is neutral and hydrophilic.
journal_name
J Chem Ecoljournal_title
Journal of chemical ecologyauthors
Golden JW,Riddle DLdoi
10.1007/BF00988553subject
Has Abstractpub_date
1984-08-01 00:00:00pages
1265-80issue
8eissn
0098-0331issn
1573-1561journal_volume
10pub_type
杂志文章abstract：:The alkaloids solanine and tomatine and the polyene antibiotic nystatin were tested in vitro against the entomopathogenic fungusBeauveria bassiana. Nystatin was the most inhibitory compound tested, reducing colony formation, growth, and development of conidiaphores to a greater degree and at lower concentrations than ...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01014712
更新日期：1989-02-01 00:00:00
abstract：:Neotropical Heliconius butterflies are members of various mimicry rings characterized by diverse colour patterns. In the present study we investigated whether a similar diversity is observed in the chemistry of volatile compounds present in male wing androconia. Recent research has shown that these androconia are used...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-017-0867-3
更新日期：2017-09-01 00:00:00
abstract：:Chemoreception in the adults of the freshwater prawnMacrobrachium rosenbergii was investigated under controlled laboratory conditions, using behavioral assays. Tests were carried out on groups, as well as on individuals, all at their intermolt stages of the molt cycle, and prestarved for three to four days. Of 28 diff...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01014678
更新日期：1987-09-01 00:00:00
abstract：:After an extensive examination of the release rates and blend ratios of pheromonal components emitted by field-collected femalePectinophora gossypiella (Saunders), we find no evidence of resistance to pheromones applied to cotton fields to disrupt mating. Females from fields with 3-5 years of exposure to disruptant ph...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00988424
更新日期：1984-11-01 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
pub_type： 杂志文章
doi：10.1007/s10886-015-0638-y
更新日期：2015-11-01 00:00:00
abstract：:In 2002-2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (-)-alpha-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North ...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-009-9613-9
更新日期：2009-04-01 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
pub_type： 杂志文章
doi：10.1007/s10886-018-0996-3
更新日期：2018-08-01 00:00:00
abstract：:As a specialist on the reproductive structures of Pastinaca sativa and species in the related genus Heracleum, the parsnip webworm (Depressaria pastinacella) routinely encounters a distinctive suite of phytochemicals in hostplant tissues. Little is known, however, about the detoxification mechanisms upon which this sp...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-012-0073-2
更新日期：2012-02-01 00:00:00
abstract：:Trichothecene mycotoxins were produced byFusarium sporotrichioides DAOM 197255 isolated from a spruce budworm cadaver. An extract from the culture filtrate containing these metabolites was toxic to budworm when ingested at concentrations as low as 10 ppm in diet, and survivors were predisposed to infection with a fung...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01014093
更新日期：1990-05-01 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
pub_type： 杂志文章
doi：10.1007/BF02066234
更新日期：1994-08-01 00:00:00
abstract：:A system is described for the collection of volatiles produced by plants and insects that minimizes stresses on the plant or insect in an environment that is free from chemical impurities. Air entering a volatile collection chamber containing insects and/or plants was purified using a nonwoven fabric medium infused wi...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00980075
更新日期：1992-07-01 00:00:00
abstract：:Trapping experiments were carried out near Winnipeg, Canada, in the spring of 1987 and 1988 to test attraction of crucifer-feeding flea beetles to volatile glucosinolate (GS) hydrolysis products released from glass vials. Nine isothiocyanates (IC) or mustard oils and three nitriles (CN) were tested. The pattern of att...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00988327
更新日期：1992-06-01 00:00:00
abstract：:Chemosensory proteins (CSPs) have been proposed to capture and transport hydrophobic chemicals to receptors on sensory neurons. We identified and cloned 24 CSP genes to better understand the physiological function of CSPs in Helicoverpa armigera. Quantitative real-time polymerase chain reaction assays indicate that CS...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-015-0574-x
更新日期：2015-05-01 00:00:00
abstract：:Three adult cave-dwelling ground beetle species were induced to discharge secretions of their pygidial glands into vials. Dichloromethane extraction was used to obtain the secretions. In total, 42 compounds were identified by GC/MS analysis. Pheggomisetes ninae contained 32 glandular compounds, Laemostenus (Pristonych...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-015-0593-7
更新日期：2015-06-01 00:00:00
abstract：:The biological activity of aqueous extracts of velvetleaf (Abutilon theophrasti Medik.) seed coats and their flavonoid components against three plant species and five soil fungi was investigated. Aqueous extracts slightly inhibited germination and significantly inhibited radicle growth of all plant species tested. Fun...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01012523
更新日期：1988-07-01 00:00:00
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
pub_type： 杂志文章
doi：10.1007/BF01020566
更新日期：1986-02-01 00:00:00
abstract：:A brief 2-hr experience with hostDrosophila larvae in artificial apple-yeast or mushroom microhabitats had three effects on the foraging behavior of femaleLeptopilina heterotoma (Hymenoptera: Eucoilidae) parasitoids under field conditions. First, experienced females released at the center of circular arrays of apple-y...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00979616
更新日期：1990-11-01 00:00:00
abstract：:We used a detailed analysis of feeding behavior to investigate the role of solanaceous alkaloids as sensory-based feeding deterrents for the Colorado potato beetle,Leptinotarsa decemlineata (Say). Experiments were conducted on three geographic, host-adapted populations of beetles to determine whether evolutionary chan...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01018772
更新日期：1988-03-01 00:00:00
abstract：:Age-related changes of antennal-active components of male labial gland extracts were studied in two closely related bumblebee species, Bombus terrestris and B. lucorum. In B. terrestris, compounds eliciting electroantennogram (EAG) responses of virgin queens were ethyl dodecanoate, 2,3-dihydrofarnesal, 2,3-dihydrofarn...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-009-9650-4
更新日期：2009-06-01 00:00:00
abstract：:In the laboratory, ovipositor probing in mated femaleOlesicampe monticola was elicited by freshCephalcia lariciphila frass but not by aged frass or freshly spun larval silk. Second instar sawfly larvae andLarix needles also elicited a low level of ovipositor probing. Extracts of frass in dichloromethane, but not hexan...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00988648
更新日期：1981-01-01 00:00:00
abstract：:The sex pheromone components of the two sibling species of the dingy cutworm that occur on the prairies of western Canada were identified in abdomen-tip extracts from calling female moths. Three monounsaturated acetates, (Z)-7-dodecenyl acetate, (Z)-9-tetradecenyl acetate, and (Z)-11-hexadecenyl acetate, are common to...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00979489
更新日期：1990-10-01 00:00:00
abstract：:Calling behavior and pheromone emission by virgin femaleE. loftini moths were investigated in laboratory experiments. Calling peaked during the last three hours of the night. Three-day-old moths called more than older or younger moths and began calling earlier in the night than younger moths. Female emissions were col...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF02027777
更新日期：1989-01-01 00:00:00
abstract：:The raspberry cane midge, Resseliella theobaldi, is a widespread pest of cultivated red raspberry in Europe. Pheromone-baited traps could provide a much-needed, accurate means to monitor the pest. Volatiles collected separately from virgin female and male midges were analyzed by gas chromatography (GC) coupled to mass...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-009-9588-6
更新日期：2009-02-01 00:00:00
abstract：:Aphids have long been recognized as good phytochemists. They are small sap-feeding plant herbivores with complex life cycles that can involve cyclical parthenogenesis and seasonal host plant alternation, and most are plant specialists. Aphids have distinctive traits for identifying and exploiting their host plants, in...
journal_title：Journal of chemical ecology
pub_type： 杂志文章,评审
doi：10.1007/s10886-018-0955-z
更新日期：2018-09-01 00:00:00
abstract：:Boron (B) deficiency is a common micronutrient deficiency that has been reported to affect the phenolic metabolism of plants. Thus, it may play a role in defense against herbivorous animals. However, the role of B in a plant's resistance to herbivores has not received any particular attention from researchers. In this...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-011-9948-x
更新日期：2011-05-01 00:00:00
abstract：:Dufour's gland is the origin of the trail pheromone of Gnamptogenys striatula. Chemical analysis of the glandular extracts revealed a series of new natural products, especially esters of (2E)-3,4,7-trimethyl-2,6-octadien-1-ol (4-methylgeraniol), and (2E)-3,4,7-trimethyl-2,6-nonadien-1-ol (a bishomogeraniol isomer) wit...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1023/a:1021444321238
更新日期：2002-12-01 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
pub_type： 杂志文章
doi：10.1007/BF00994595
更新日期：1991-12-01 00:00:00
abstract：:The significance of the geminal dimethyl group at C-6 of (+)-trans-veibenyl acetate (Ib), a sex pheromone mimic of the American cockroach, was investigated. Our interest was first directed to eliminating either methyl group of the geminal dimethyl group. Consequently, alcohols (IIIa and IVa) possessing a monomethyl gr...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00990225
更新日期：1983-04-01 00:00:00
abstract：:The olfactory discrimination ability in a fruit-eating bat,Carollia perspicillata, was investigated. In a food-rewarded flight training procedure, four animals were taught to choose one of two odors simultaneously presented in a three-choice apparatus.Carollia chose the odor of ripe banana over that of unripe banana i...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00982099
更新日期：1990-12-01 00:00:00
abstract：:The major component of the rectal glandular extract and volatile emission of maleBactrocera cacuminatus is racemic 1,7-dioxaspiro[5.5]undecane. l-Hydroxy-5-nonanone as its open chain form, together with 6-n-butyl-3,4-dihydro-2H-pyran are minor components. 1,7-Dioxaspiro[5.5]undecan-4-ol is present at a low level and i...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00994347
更新日期：1991-02-01 00:00:00
