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::Aggregation pheromones were isolated fromCryptolestes pusillus (Schönherr), a coleopteran pest of stored products. Porapak Q-captured beetle and frass volatiles were fractionated by preparative gas-liquid chromatography. The fractions were bioassayed with an arena olfactometer and/or with a two-choice, pitfall olfacto...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF01020675
更新日期:1985-08-01 00:00:00
abstract::A two-choice, wind-tunnel olfactometer was designed and contructed to determine whether second-instar eastern spruce budworm larvae,Christoneura fumiferana (Clem.), could detect and discriminate among host-plant volatiles. Volatiles of current year's growth ofPicea glauca were preferred over those ofP. rubens, P. mari...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF01012072
更新日期:1985-07-01 00:00:00
abstract::Racemicezo-brevicomin, racemic frontalin, and myrcene were released at two proportions (5∶1∶400 and 1∶1∶1), each at three levels (1 ×, 10 ×, and 100 ×) in a ponderosa pine forest in central California. The 5∶1∶400 mix was based on an estimate of the relative amounts released from a ponderosa pine under attack by the w...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988303
更新日期:1985-06-01 00:00:00
abstract::The cardenolide content of the gut, wings, and fat body ofOncopeltus fasciatus was examined. The female fat body contained 4-5% of the total cardenolide content of the insect. The cardenolide content of male fat body, and gut and wings of both sexes was below the detection limit of the cardenolide assay. Thin-layer ch...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988575
更新日期:1985-05-01 00:00:00
abstract::Tannic acid and pin oak tannins precipitate large amounts of the abundant leaf protein, ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPC), over a wide pH range (6.15-9.30) in the presence of sodium, potassium, magnesium, and calcium ions at concentrations comparable to those reported in the gut fluids of lepidop...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00989559
更新日期:1985-04-01 00:00:00
abstract::Cucumber seeds and seedlings at various ages (7-19 days old) were treated with a single treatment or multiple treatments (at 2-day intervals) of ferulic acid in nutrient culture. Ferulic acid treatments of cucumber seeds during stages of germination and radicle growth did not significantly reduce subsequent seedling g...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF01411415
更新日期:1985-03-01 00:00:00
abstract::Male olive fruit fly attraction to the four synthetic components of the female sex attractant pheromone was studied under laboratory and field conditions. In laboratory tests males responded to all four components tested separately. Component I, (1,7-dioxaspiro[5.5]undecane) was more attractive than any of the remaini...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF01411425
更新日期:1985-03-01 00:00:00
abstract::Female sex pheromones ofPeriplaneta americana, P. australasiae, andBlatta orientalis elicit locomotion and upwind orientation in conspecific males. Interspecific attraction between these species was observed in a wind tunnel assay for most species combinations, with the exception ofP. australasiae males not being attr...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988196
更新日期:1985-02-01 00:00:00
abstract::Recent observations of social behavior and reproduction in wolves, coyotes, hunting dogs, mongooses, and lions suggest possible involvement of pheromones in the regulation of reproductive activity. Observed phenomena resemble the known pheromonal effects in mice such as suppression or synchronization of estrus, induct...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988206
更新日期:1985-02-01 00:00:00
abstract::Steroidal glycoalkaloids, found in species of the Solanaceae, elicit bursting activity in galeal and tarsal chemosensilla of adult Colorado potato beetles. The effect has an average latency of 6-12 sec, depending on the sensillum/alkaloid combination. A 20-sec alkaloid treatment is often suffficient to render galeal s...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987607
更新日期:1985-01-01 00:00:00
abstract::Fertile queens of the antMonomorium pharaonis produce a chemical substance which is not present in worker ants or in young, alate (virgin) queens. The material has been identified as (E,E,E)-1-isopropenyl-4,8,12-trimethylcyclotetradeca-3,7,11-triene (neocembrene). This chemical is produced in the Dufour's gland of fer...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987358
更新日期:1984-12-01 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::Four litters of king snakes (Lampropeltis getulus), a snake-eating species, were tested for responses to chemicals from colubrid and crotaline snakes. King snakes presented with swabs rubbed against the dorsal skin of living snakes and with swabs treated with methylene chloride extracts of shed snake skins tongue-flic...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00990320
更新日期:1984-10-01 00:00:00
abstract::This study was performed on virgin females ofCulicoides nubeculosus to determine sites of production and emission of sex pheromone. The ventral abdominal surface is the site of emission of the pheromone. Morphologically there is evidence of the presence of abdominal atrichial areas. The abdominal areas, eight per segm...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988120
更新日期:1984-09-01 00:00:00
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 ...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988553
更新日期:1984-08-01 00:00:00
abstract::Two monophagous sawflies,Neodiprion dubiosus andN. rugifrons, actively avoid feeding on the current season's needles of jack pine,Pinus banksiana, while the polyphagousN. lecontei feeds indiscriminately on foliage of all age classes. Bioassay studies with needle extracts indicate thatN. dubiosus andN. rugifrons larval...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987514
更新日期:1984-07-01 00:00:00
abstract::Quantities of attractive (exo-brevicomin and frontalin) and inhibitory (trans-verbenol, verbenone, and ipsdienol) pheromones were monitored in both sexes ofDendroctonus brevicomis during their colonization of a ponderosa pine. Verbenone was found in males in the greatest amounts at the time of landing, and it declined...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987969
更新日期:1984-06-01 00:00:00
abstract::Communication during tandem running inPachycondyla obscuricornis is chemically mediated by a pheromone produced in the pygidial gland, which is composed of a cluster of gland cells and an associated reservoir located beween the 6th and 7th tergites of the gaster. The secretion of the gland appears to be transferred to...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988543
更新日期:1984-05-01 00:00:00
abstract::The pattern of variation in gross cardenolide concentration of 111Asclepias speciosa plants collected in six different areas of California is a positively skewed distribution which ranges from 19 to 344 μg of cardenolide per 0.1 g dry weight with a mean of 90 μg per 0.1 g. Butterflies reared individually on these plan...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00994224
更新日期:1984-04-01 00:00:00
abstract::Analysis of the volatile compounds derived from cephalic glands of the fire beeTrigona (Oxytrigona) tataira by GC-MS was undertaken. The following compounds were readily identified: hydrocarbons:n-C11H24,n-C13H28,n-C14H30,n-C15H32,n-C17H36,n-C23H48,n-C15H30,n-C17H34,n-C21 H42, andn-C23H46; carboxylic acids: palmitic a...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988091
更新日期:1984-03-01 00:00:00
abstract::Flehmen (or "lipcurl") is a response of male mammals primarily to female urine, performed primarily during the reproductive season. To elucidate the components of female urine that release the Flehmen, urine of black-tailed deer (Odocoileus hemionus columbianus) was fractionated, and the fractions were presented to ca...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987849
更新日期:1984-02-01 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
pub_type: 杂志文章
doi:10.1007/BF00987859
更新日期:1984-02-01 00:00:00
abstract::Crude extracts of root of the forage legumesLotus pedunculatus andCoronilla varia (crownvetch) were toxic when administered orally to 3rd instarCostelytra zealandica larvae. A group of 3-nitropropanoyl-D-glucopyranoses was isolated from active fractions of the crude extracts. These toxins, some of which were already k...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987645
更新日期:1984-01-01 00:00:00
abstract::Tree volatiles and pheromones produced by southern bark beetles were bioassayed for response by the clerid predatorThanasimus dubius (F.). Upwind flights in a laboratory olfactometer, modified from Visser (1976), were used to determine the attractiveness of compounds. Differences in response to a solvent control and p...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987655
更新日期:1984-01-01 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
pub_type: 杂志文章
doi:10.1007/BF00990748
更新日期:1983-10-01 00:00:00
abstract::Acetic, propionic, butyric, isobutyric, valeric, and isovaleric acids have been identified in extracts of the excreta of the house cricket,Acheta domesticus (L.), by gas-liquid chromatography. Solutions of propionic acid applied to filter paper aggregated 1- to 2-week-old larvae, while solutions of acetic, butyric, va...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00994799
更新日期:1983-09-01 00:00:00
abstract::Several experiments have been conducted at the University of Illinois, Urbana, Illinois, to determine the role of allelopathic (autotoxicity) effects of alfalfa (Medicago sativa L.) on the establishment of alfalfa. By means of correcting any soil fertility differences and protecting the alfalfa seedlings from fungal a...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00982211
更新日期:1983-08-01 00:00:00
abstract::Recovery studies were conducted with ferulic acid, a common allelopathic agent, using various soils and soil components. Ferulic acid was placed into sterile soil components (gibbsite, geothite, Georgia kaolin, and Utah bentonite), and different sterile soil materials (from different horizons in the same profile) vary...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00982221
更新日期:1983-08-01 00:00:00
abstract::Several chemical modifications of a synthetic fermented egg (SFE) lure were field tested on free-ranging coyotes (Canis latrans) to determine the effects of odor intensity and quality on their behavioral responses. SFE was modified for testing by (1) enhancing one of the four basic odor components (fruity, sulfurous, ...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987812
更新日期:1983-07-01 00:00:00
abstract::The chemical compositions of anal sac secretions of seven mustelid species were examined by thin-layer chromatography, gas chromatography, and mass spectrometry. The analyses showed great similarities between species belonging to the genusMustela, i.e.,M. erminea,M. nivalis,M. vison, andM. putorius, whereasMaries mart...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988779
更新日期:1983-06-01 00:00:00
abstract::In addition to 2-methyl-4-heptanone, 6-methyl-5-hepten-2-one, and iridodials, the anal gland exudate of the dolichoderine ant,Tapinoma simrothi, contains 4-heptanone and 4-hydroxy-4-methyl-2-pentanone. The secretion functions as an alarm pheromone. ...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00990412
更新日期:1983-05-01 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::Many compounds related to (+)-bornyl acetate (a sex phero-mone mimic of the American cockroach) were synthesized and tested for sex pheromonal activity. All compounds except for esters of (+)- and (-)-borneol were inactive, whereas (+)-bornyl acetate (Ib) and propionate (Ic) showed the activity at 0.05 mg. Although (-...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988460
更新日期:1983-03-01 00:00:00
abstract::The synthesis of the major component of the sex pheromone of the processionary mothThaumetopoea pityocampa is described. The synthesis uses the carbocupration of acetylene, followed by the coupling with the appropriate 1-iodoalkyne. This synthetic pheromone was shown to be of 98.8%Z purity. ...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00988039
更新日期:1983-02-01 00:00:00
abstract::The field responses of English populations of the Dutch elm disease vectors,Scolytus multistriatus andS. scolytus to baits containing 4-methyl-3-heptanol, a host synergist [(-)-α-cubebene or (-)-limonene] and (±)-α-, (+)-β-, (-)-β-, (±)-γ-, or (±)-δ-multistriatin were examined. (±)-α-Multistriatin, released at 5-10 μg...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987771
更新日期:1983-01-01 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
pub_type: 杂志文章
doi:10.1007/BF00989103
更新日期:1982-12-01 00:00:00
abstract::The protein-precipitating capacities of tanniferous extracts from immature and mature leaves of threeShorea spp. (Dipterocarpaceae) seedlings were measured by an adaptation of Goldstein and Swain's β-glucosidase precipitation assay. Protein precipitation by the extracts was not correlated with total phenolics (Folin-D...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF01403099
更新日期:1982-11-01 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
pub_type: 杂志文章
doi:10.1007/BF00990750
更新日期:1982-09-01 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
pub_type: 杂志文章
doi:10.1007/BF00987884
更新日期:1982-07-01 00:00:00
abstract::MaleGrapholitha molesta hairpencil components are ethyltrans-cinnamate, mellein, methyl jasmonate, and methyl 2-epijasmonate. The natural behavioral effect elicited by hairpencil-displaying males during courtship in attracting sex-pheromone-releasing females from several centimeters away can be duplicated by mixtures ...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987661
更新日期:1982-06-01 00:00:00