解剖学和形态学
麻醉学
听力与言语-语言病理学
行为科学
心脏和心血管系统
细胞和组织工程学
临床神经病学
危重症监护医学
牙科,口腔外科和医学
皮肤病学
急诊医学
内分泌学和新陈代谢
肠胃学和肝脏学
老人病学和老年医学
卫生保健科学和服务
血液学
免疫学
传染病
综合和补充性医学
医学伦理学
医学信息学
医学实验室技术
医学,全科和内科
医学,法律
医学,研究和试验
神经系统科学
护理
营养学和饮食学
产科医学和妇科医学
肿瘤学
眼科学
整形外科学
耳鼻喉科学
病理学
儿科学
周围血管疾病
药理学和药剂学
生理学
基本医疗保健
精神病学
公共、环境和职业卫生
放射学,核医学和医学成像
康复学
生殖生物学
呼吸系统
风湿病学
运动科学
外科学
毒理学
热带医学
泌尿学和肾脏学
病毒学
老年医学
健康政策和服务
心理学,临床
abstract::Lycopersicon hirsutum, a wild relative of the tomato, is highly resistant to arthropod herbivores. Both botanic forms ofL. hirsutum, L. hirsutum f.glabratum (C.H. Mull.) andL. hirsutum f.typicum (Humb. & Bonpl.), are resistant to two-spotted spider mites,Tetranychus urticae Koch. However, leaves and trichome secretion...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00980597
更新日期:1993-12-01 00:00:00
abstract::Bakers' yeast reduction of (2E)-3-(2'-furanyl)-2-methyl-2-propenal yielded the synthetic intermediate, (2S)-3-(2'-furanyl)-2-methylpropanol, of high chiral purity (>97% ee) for the synthesis of the enantiomers of 2,5-dimethylheptadecane and 7-methylheptadecane, two synergistic sex pheromone components of the western h...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00980690
更新日期:1993-11-01 00:00:00
abstract::Responses ofRhagoletis pomonella (Walsh) (Diptera: Tephritidae) flies to host fruit visual stimuli (apples or models of apples) and chemical stimuli (synthetic apple volatile blend) were studied in semidwarf field-caged apple trees. Three different fruit or model densities (1, 4, or 16 fruit or models/ tree) and two o...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00980700
更新日期:1993-11-01 00:00:00
abstract::Males ofCarpophilus antiquus Melsheimer (Coleoptera: Nitidulidae) emit an aggregation pheromone that was found to be a novel hydrocarbon, (3E,5E,7E,9E)-6,8-diethyl-4-methyl-3,5,7,9-dodecatetraene. A synthetic scheme and spectra (mass and proton NMR) are given for the compound. Beetles produced the pheromone when feedi...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00979658
更新日期:1993-10-01 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
pub_type: 杂志文章
doi:10.1007/BF00979668
更新日期:1993-10-01 00:00:00
abstract::A spatial-temporal model for personal computers is developed that simulates trapping of an insect population based on trap and population parameters that can be varied independently. The model allows individual "insects" to move forward at any step size with right or left turns within any specified angle taken at rand...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00983798
更新日期:1993-09-01 00:00:00
abstract::The cuticular lipid composition of lower and upper leaves of five genotypes of field-grown corn,Zea mays L., was determined by combined gas chromatography-mass spectrometry. Surface lipids of the upper leaves had a higher proportion ofn-alkanes (45-52%) than the lower leaves, while the lower leaves had higher percenta...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00983808
更新日期:1993-09-01 00:00:00
abstract::Arboreal marsupials consume terpenes in quantities that are toxic to other mammals, indicating that they possess special detoxification mechanisms. The metabolic fate of dietary terpenes was studied in the common ringtail possum (Pseudocheirus peregrinus). Three animals were fedEucalyptus radiata leaf for 10 days. Lea...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00982297
更新日期:1993-08-01 00:00:00
abstract::Phenolic compounds have been identified as the most common allelochemicals produced by higher plants. Inhibitions of cinnamic acid, its related phenolic derivatives, and abscisic acid (ABA) on seedling growth and seed germination of lettuce were studied.trans-Cinnamic acid, ando-,m-, andp-coumaric acids inhibited the ...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00982307
更新日期:1993-08-01 00:00:00
abstract::Responses of threeHylastes species,Dryocoetes autographus, and twoHylobius species to terpenes and ethanol were studied in field experiments on clear-cut forest sites in Sweden using baited ground traps.α-Pinene alone did not attract any of the six species. A terpene blend (spruce turpentine consisting mainly ofα-pine...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00984884
更新日期:1993-07-01 00:00:00
abstract::By utilizing one- and two-dimensional nuclear magnetic resonance techniques, the complete assignments of the proton and carbon spectra of the lactones anastrephin, epianastrephin, and suspensolide have been accomplished. These compounds are pheromone components for both the Caribbean and Mexican fruit flies. The relat...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00984894
更新日期:1993-07-01 00:00:00
abstract::Populations ofAedes sierrensis (Ludlow) completed development in tannic acid solutions over a wide concentration range (i.e., 0-1.0 g/liter) in artificial microcosms exposed to field conditions. The most notable effects of high tannic acid concentration were to slow larval developmental rates and to reduce numbers of ...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987373
更新日期:1993-06-01 00:00:00
abstract::The bioactivity of 22 essential oils from aromatic and medicinal plants was tested uponAcanthoscelides obtectus Say (Coleoptera, Bruchidae), a pest of kidney bean (Phaseolus vulgaris L.). The insecticidal effect was evaluated by determination of 24- and 48-hr LC50 and LC50 (from 1.50 mg/ dm(3) to more than 1000 mg/dm(...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987383
更新日期:1993-06-01 00:00:00
abstract::The sex pheromone of the western hemlock looper (WHL),Lambdina fiscellaria lugubrosa (Hulst), comprises three methylated hydrocarbons: 5,11-dimethylheptadecane (5,11), 2,5-dimethylheptadecane (2,5), and 7-methylheptadecane (7). Compounds extracted from female pheromone glands were identified by coupled gas chromatogra...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00992534
更新日期:1993-05-01 00:00:00
abstract::Analysis by gas chromatography (GC) and GC-mass spectroscopy disclosed that droplets of anal fluid produced by second-instar western flower thrips,Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), contain a two-component alarm pheromone, comprised of decyl acetate and dodecyl acetate, in a molar ratio o...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00985001
更新日期:1993-04-01 00:00:00
abstract::Analysis ofChelone glabra (Scrophulariaceae) by gas chromatography showed that leaves of this plant contained primarily the iridoid glycoside catalpol, and in a few individuals some aucubin was also detected. There was no difference in the iridoid glycoside content of damaged compared to undamaged plants, nor was ther...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00985011
更新日期:1993-04-01 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
pub_type: 杂志文章
doi:10.1007/BF00994319
更新日期:1993-03-01 00:00:00
abstract::The study of food repulsion in ungulates is of practical importance for controlling browsing damage to forest trees and agricultural crops. Experiments with domestic sheep assessed the repulsive value of three natural and two synthetic products, using a food-choice situation. Animals were individually presented with t...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00993691
更新日期:1993-02-01 00:00:00
abstract::We investigated the effects of host species and resource (carbon dioxide, nitrate) availability on activity of detoxication enzymes in the gypsy moth,Lymantria dispar. Larvae were fed foliage from quaking aspen or sugar maple grown under ambient or elevated atmospheric CO2, with low or high soil NO 3 (-) availability....
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00993701
更新日期:1993-02-01 00:00:00
abstract::Recently parasitoids were hypothesized to encounter a reliability-detectability problem relating to chemical stimuli from the first and second trophic level, when searching for hosts. The relative role of infochemicals originating from the host,Pieris brassicae (second trophic level), and its food plant, cabbage (firs...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987470
更新日期:1993-01-01 00:00:00
abstract::InNauphoeta cinerea, male calling behavior is associated with sex pheromone release by the sternal glands. The male pheromone that attracts females from a distance is a mixture of 2-methylthiazolidine and 4-ethylguaiacol. It is active at very low concentrations, 0.05 and 0.01 ng, respectively. Two other compounds, 3-h...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00984949
更新日期:1992-12-01 00:00:00
abstract::The inhibition of ATP synthesis, proton uptake, and electron transport (basal, phosphorylating, and uncoupled) from water to methylviologen by zaluzanin C indicates that it acts as an electron transport inhibitor. Uncoupled photosystem I electron transport rate was not affected by zaluzanin C; however, uncoupled photo...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00981914
更新日期:1992-11-01 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
pub_type: 杂志文章
doi:10.1007/BF00981924
更新日期:1992-11-01 00:00:00
abstract::Sasa (Sasa cernua Makino) is a very serious weed pest. Its allelopathy was studied using lettuce, wheat, timothy, and green amaranth as testing species. Cultured in the rhizosphere soil ofSasa cernua, the seedlings were inhibited by 42-80% compared with the controls cultured in normal soil and vermiculite. The phenoli...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF02751103
更新日期:1992-10-01 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
pub_type: 杂志文章
doi:10.1007/BF00993222
更新日期:1992-09-01 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
pub_type: 杂志文章
doi:10.1007/BF00993232
更新日期:1992-09-01 00:00:00
abstract::Selected combinations of (Z)-5-decenyl, (Z)-7-dodecenyl, and (Z)-9-tetradecenyl acetates, the pheromone components of the turnip mothAgrotis Segetum were tested for field attractancy at six, two, and three sites in Europe, Asia, and Africa, respectively. At all of the sites in Eurasia and in northern Africa the ternar...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00994360
更新日期:1992-08-01 00:00:00
abstract::Hydroxamic acids have been shown to be toxic to many pest insects and pathogens. In this study, the behavioral responses of western corn rootworm larvae to naturally occurring and synthetic hydroxamic acids were investigated. In a choice test between corn roots treated with hydroxamic acids and roots treated with dist...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00980055
更新日期:1992-07-01 00:00:00
abstract::In field tests synthetic (3E,5Z)-3,5-tetradecadienyl acetate was found to attract large numbers of males ofRecurvaria leucatella Clerck into sticky traps. The other geometrical isomers did not influence catches. Of the corresponding monoenic compounds, (3E)-3-tetradecenyl acetate was highly attractive to a close relat...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00980065
更新日期:1992-07-01 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::Two applications of isolates ofPaecilomyces marquandii from suppressive chinampa soils or P. lilacinus from Peru, fungi that parasitize nematode eggs, generally gave better control of tomato root-knot due toMeloidogyne incognita than did a single application. The effects on root galling by each of thePaecilomyces isol...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00994614
更新日期:1992-05-01 00:00:00
abstract::Using traps baited with natural and synthetic onion volatiles, we examined the effects of different habitats and mating on the olfactory behavior of laboratory-reared and wild onion flies. Rankings of olfactory treatments as host-finding stimuli for females were dependent on their mating status and the habitat in whic...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987823
更新日期:1992-04-01 00:00:00
abstract::The alfalfa seed chalcid (ASC),Bruchophagus roddi, is a monophagous pest of alfalfa that parasitizes developing seeds. To further understand the olfactory basis of host-plant recognition by ASCs, we recorded electroantennograms (EAGs) from females and males to 39 volatiles from both alfalfa and red clover. The chemore...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00994235
更新日期:1992-03-01 00:00:00
abstract::DIMBOA (2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one), a secondary metabolite found in cereal extracts, confers resistance in wheat to aphids. Its effect on beneficial organisms was tested on larvae of the aphid predatorEriopis connexa Germar. Larvae were fed until pupation on artificial diets to which different conce...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00994245
更新日期:1992-03-01 00:00:00
abstract::This study was designed to compare the chemistry of elaiosomes of three sympatric species ofTrillium to discover if there are correlations between chemistry and dispersal rates by ants. We quantified the amount of proteins and neutral lipids and qualitatively analyzed the fatty acids occurring in triglyceride, diglyce...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00993754
更新日期:1992-02-01 00:00:00
abstract::The composition of the territorial marking pheromones from mandibular glands of males of the beewolvesPhilanthus crabroniformis, P. barbatus, andP. pulcher have been determined. The structures of the components were elucidated by gas chromatography-mass spectrometry and gas chromatography-Fourier transform infrared sp...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00997162
更新日期:1992-01-01 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::Larvae of the mothUtetheisa ornatrix are shown to cannibalize eggs in the laboratory. They proved most cannibalistic if they were systemically deficient in pyrrolizidine alkaloid (PA), the defensive agent that protectsUtetheisa at all stages of development against predation, and whichUtetheisa acquire as larvae from t...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987992
更新日期:1991-11-01 00:00:00
abstract::Coniferyl benzoate, a secondary metabolite found in quaking aspen (Populus tremuloides) and other plants, is an avian feeding deterrent of ecological and potential commercial importance. This study was conducted to determine if coniferyl benzoate is a trigeminal stimulant for birds and to ascertain if trigeminal chemo...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988002
更新日期:1991-11-01 00:00:00