U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Journal name Entomologia experimentalis et applicata Remove constraint Journal name: Entomologia experimentalis et applicata Publication year rev 8022-1978 Remove constraint Publication year rev: 8022-1978 Source 1978 v. no. Remove constraint Source: 1978 v. no.
Start Over

Search

42  Search Results

« Previous | 1 - 20 of 42 |
Number of results to display per page

Search Results

1. Ascorbic acid, ascorbates and analogs in spodoptera littoralis diet: stability and effect on larvae

Author:
NAVON, A.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 35-40
ISSN:
0013-8703
Subject:
Spodoptera littoralis; ascorbic acid; chromatography; diet; insect development; larvae; pupae
Abstract:
... The dietary effect of L-ascorbic acid, its ascorbates and analogs at equimolar concentrations on larvae and pupae of the Egyptian Cotton Leafworm, Spodoptera littoralis (Boisd.) was studied. The daily activity loss of these compounds in the diet was determined with a 2,4 dinitrophenylhydrazine-thin layer chromatography method. This determination of ascorbates and analogs showed a rapid loss of act ...
DOI:
10.1111/j.1570-7458.1978.tb02754.x

2. AN Assessment of the performance of dermestes maculatus degeer (coleoptera, dermestidae) in some dietary media

Author:
OSUJI, FABIAN N.C.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 185-192
ISSN:
0013-8703
Subject:
Dermestes maculatus; adults; blood meal; body size; bone meal; diet; dried fish; fecundity; feeds; females; fish; fish meal; larvae; lipids; longevity; nutrient content; palm kernel meal; sex ratio; water content
Abstract:
... A comparative assessment has been made of the biological performance of Dermestes maculatus Degeer in various dietary media, namely dried fish, fish meal, bone meal, palm kernel meal, blood meal and wholemeal. The main parameters used were body size and weight of fully grown larvae, number of adult emergents, sex ratio, fecundity of females and longevity of adults in each medium. On all these crit ...
DOI:
10.1111/j.1570-7458.1978.tb02769.x

3. THE Bimodal termination of diapause in the laboratory by hyalophora cecropia

Author:
WALDBAUER, G.P.; STERNBURG, J.G.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 121-130
ISSN:
0013-8703
Subject:
Hyalophora cecropia; adult development; diapause; photophase; pupae; winter
Abstract:
... The emergence curve of wild Hyalophora cecropia or of a strain selected for emergence with the early mode was bimodal if the pupae were conditioned (= diapause-ending processes) in an outdoor insectary or in a 6° incubator. When pupae were periodically brought indoors during the winter, the time required for emergence gradually decreased and the emergence curve gradually became bimodal. The durati ...
DOI:
10.1111/j.1570-7458.1978.tb03014.x

4. THE Chemical basis of resistance of sorghum bicolor to attack by locusta migratoria

Author:
WOODHEAD, S.; BERNAYS, E.A.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 123-144
ISSN:
0013-8703
Subject:
Locusta migratoria; Sorghum bicolor; bioassays; developmental stages; dhurrin; esters; hydrogen cyanide; mouthparts; palatability; phagostimulants; phenolic acids; plant extracts; plant tissues
Abstract:
... The resistance of young Sorghum bicolor to attack by Locusta migratoria (L.) has been investigated from a chemical standpoint. Absence of phagostimulants is not important. The release on biting of HCN from the non-deterrent cyanogenic glucoside, dhurrin, has been shown quantitatively to play an important part in the unpalatability. Correlation of feeding data with release rates of HCN showed that ...
DOI:
10.1111/j.1570-7458.1978.tb02763.x

5. Chemoreception of an oviposition deterrent associated with eggs in pieris brassicae

Author:
BEHAN, MARY; SCHOONHOVEN, L.M.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 163-177
ISSN:
0013-8703
Subject:
Pieris brassicae; butterflies; chemoreceptors; eggs; electrophysiology; females; flowers; larvae; leaves; odors; oviposition; oviposition deterrents; pheromones; sensilla; water solubility
Abstract:
... Electro-antennograms (EAG) in Pieris brassicae butterflies showed graded responses to the odour of intact conspecific eggs, and also to leaf and flower volatiles Contributing to this summated potential are at least two types of sensilla on each segment of the antenna, although the terminal 6-8 segments do not respond proportionately. Analysis of the activity profiles of single olfactory cells to t ...
DOI:
10.1111/j.1570-7458.1978.tb02767.x

6. Contact transfer of diflubenzuron (dimilin®) by boll weevils¹ and the relation of site of application and effect on egg hatch

Author:
McLAUGHLIN, R.E.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 171-176
ISSN:
0013-8703
Subject:
Anthonomus grandis; diflubenzuron; eggs; elytra; females; integument; males; oviposition; urea
Abstract:
... The growth-regulating chemical diflubenzuron (tested as TH=6040, now formulated as Dimilin®), N(4-chlorophenyl)-N-(2,6-difluorobenzoyl)urea) was (1) applied to tarsi or to genital sternites of male or female boll weevils, Anthonomus grandis Boheman, that were then placed with untreated weevils of the opposite sex; (2) applied to genital sternites of either males or females and then placed with the ...
DOI:
10.1111/j.1570-7458.1978.tb03019.x

7. Developmental interactions between the tobacco hornworm manduca sexta and its braconid parasite apanteles congregatus¹

Author:
BECKAGE, NANCY E.; RIDDIFORD, LYNN M.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 139-151
ISSN:
0013-8703
Subject:
Apanteles; Manduca sexta; ecdysis; hosts; instars; juveniles; larvae; metamorphosis; parasite load; parasites; parasitism; wasps
Abstract:
... After newly hatched Manduca sexta larvae were parasitized by Apanteles congregatus, the wasps emerged from third, fourth, fifth, or supernumerary sixth stage host larvae. The number of parasites present within a host determined the time required for Apanteles development and the final host instar. In addition, the percent of parasites within a host which successfully completed their development an ...
DOI:
10.1111/j.1570-7458.1978.tb03016.x

8. Difference in farnesol content in strawberry varieties and their susceptibility to the carmine spider mite tetranychus cinnabarinus (boisd.) (acari: tetranychidae)

Author:
REGEV, SAMUEL
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 22-26
ISSN:
0013-8703
Subject:
Fragaria ananassa; Tetranychus cinnabarinus; farnesol; mite infestations; sesquiterpenoids; strawberries
Abstract:
... Numbers of the carmine spider mite, Tetranychus cinnabarinus and concentration of the sesquiterpene alcohol farnesol were assayed for four commercial varieties of strawberry. The most resistant variety, Tioga, had the lowest farnesol content, whereas the most susceptible variety, Fresno, had the highest. The other two varieties: Aliso and Sequoia were intermediate in regard to mite infestation as ...
DOI:
10.1111/j.1570-7458.1978.tb02752.x

9. Effects of larval rearing temperature on the development of the mediterranean fruit fly, ceratitis capitata

Author:
HOOPER, G.H.S.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 222-226
ISSN:
0013-8703
Subject:
Ceratitis capitata; eggs; larvae; lipid content; pupae; rearing; temperature
Abstract:
... As the temperature at which larvae of C. capitata were reared decreased from 30° to 25° to 20° the yield of pupae from eggs increased from 15% to 25% to 30% and the mean weight of pupae decreased. Within each temperature regime the weight of pupae produced on successive days declined and the fat content of those pupae varied. ...
DOI:
10.1111/j.1570-7458.1978.tb02739.x

10. THE Effects of low doses of three insecticides on activity, feeding, mating, reproductive performance and survival in glossina morsitans morsitans (glossinidae)

Author:
KWAN, W.H.; GATEHOUSE, A.G.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 201-221
ISSN:
0013-8703
Subject:
Glossina morsitans morsitans; bioassays; dieldrin; endosulfan; females; insemination; longevity; males; mortality; ovulation; permethrin; pupae; reproductive performance; solvents; toxicity
Abstract:
... Glossina morsitans morsitans Westw. surviving 48 hr after topical doses of dieldrin, endosulfan or permethrin which killed 15% or 30% during this period in an initial bioassay, were investigated for subsequent effects of the insecticides. Males surviving 48 hr after exposure to dieldrin and endosulfan were subject to further mortality which reached 70%--80% by day 15. Permethrin had some influence ...
DOI:
10.1111/j.1570-7458.1978.tb02738.x

11. Head lice in the netherlands: susceptibility for insecticides in field samples

Author:
BLOMMERS, LEO; LENNEP, MAGGY
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 243-251
ISSN:
0013-8703
Subject:
Pediculus humanus capitis; children; cities; dieldrin; lethal dose 50; lice infestations; lindane; malathion; Netherlands
Abstract:
... A double application of 1% lindane failed to cure head louse infestations in 38 out of 110 children in two cities. Residue tests showed considerable resistance levels in all samples from fourteen cities. The average LD 50's were 0.9% lindane and 2% dieldrin. A baseline for malathion was determined. LD 50 is 0.1% malathion. Some survival occurred at both 0.4% and 0.8% insecticide, contrary to obser ...
DOI:
10.1111/j.1570-7458.1978.tb02742.x

12. Hooked trichomes and resistance of phaseolus vulgaris to empoasca fabae (harris)

Author:
PILLEMER, ERIC A.; TINGEY, WARD M.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 83-94
ISSN:
0013-8703
Subject:
Empoasca fabae; Phaseolus vulgaris; appendages; beans; cultivars; death; population density; trichomes; California
Abstract:
... Two cultivars of the bean, Phaseolus vulgaris L., differing in densities of hooked trichomes were examined for resistance to the potato leafhopper, Empoasca fabae. The major plant factor affecting leafhopper performance was the density of hooked trichomes. Leafhoppers were impaled by these epidermal appendages, leading to wounding and death. Nymphal survival on the cultivar, “California Light Red ...
DOI:
10.1111/j.1570-7458.1978.tb02758.x

13. Host plant discrimination within cruciferae: feeding responses of four leaf beetles (coleoptera: chrysomelidae) to glucosinolates, cucurbitacins and cardenolides

Author:
NIELSEN, JENS KVIST
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 41-54
ISSN:
0013-8703
Subject:
Erysimum; Iberis; Phaedon; Phyllotreta nemorum; Tetrastigma; cardenolides; cucurbitacins; host plants; leaves; peas; sinigrin
Abstract:
... Feeding responses of four Chrysomelidae to six less acceptable plants and to compounds from them were investigated by means of leaf disc tests. Significant differences were found between responses of different species, and plants containing potent feeding inhibitors were always rejected Cucurbitacins are potent feeding inhibitors to Phyllotreta nemorum, and this species does not eat Iberis species ...
DOI:
10.1111/j.1570-7458.1978.tb02755.x

14. Hygroreaction of normal and desiccated armadillo officinalis isopods

Author:
WARBURG, M.R.; BERKOVITZ, K.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 55-64
ISSN:
0013-8703
Subject:
Isopoda; humidity; photochemical reactions; temperature
Abstract:
... The hygroreaction of the Mediterranean oak-woodland pillbug Armadillo officinalis (Isopoda, Oniscoidea), was studied at different temperatures and light conditions. Between 10°-30° hygroreaction was of secondary importance to photoreaction At high temperatures the intensity of hygroreaction dropped and the average time spent at the higher humidity alternative increased Desiccation altered normal p ...
DOI:
10.1111/j.1570-7458.1978.tb02756.x

15. Increasing effectiveness of visual traps for the caribbean fruit fly, anastrepha suspensa (diptera: tephritidae), by use of fluorescent colors

Author:
GREANY, P.D.; BURDITT, A.K. JR.; AGEE, H.R.; CHAMBERS, D.L.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 20-25
ISSN:
0013-8703
Subject:
Anastrepha suspensa; adults; color; females; fluorescence; fluorescent labeling; fruit flies; fruits; light intensity; rearing; reflectance; sexual maturity; sticky traps
Abstract:
... Fluorescent orange sticky traps (15 times 20 cm) reflecting maximally at 590 nm captured significantly more Caribbean fruit flies than nonfluorescent orange traps. Fluorescent traps with reflectance peaks at 510 and 610 nm also tended to capture more flies than the plain orange traps. Fly capture rates were directly related to the proportion of total light reflected in the 580-590 nm region and to ...
DOI:
10.1111/j.1570-7458.1978.tb02727.x

16. Interactions between pheromone traps for the pea moth, cydia nigricana (f.)

Author:
WALL, C.; PERRY, J.N.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 155-162
ISSN:
0013-8703
Subject:
Cydia nigricana; moths; pheromone traps; wind
Abstract:
... Interactions between pheromone traps were investigated in a series of trap spacing experiments involving the pea moth, Cydia nigricana. Central traps in circles or lines of traps, always caught fewer moths than isolated traps. This effect was significant even when the radius of the circle or the spacing in the line was 100 m, indicating a range of attraction of at least this distance. In lines of ...
DOI:
10.1111/j.1570-7458.1978.tb02766.x

17. Mating behaviour of glossina pallidipes austen (diptera, glossinidae): genetic differences in copulation time between allopatric population

Author:
JAENSON, THOMAS G.T.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 100-108
ISSN:
0013-8703
Subject:
Glossina pallidipes; X chromosome; allopatry; autosomes; backcrossing; copulation; forests; genetic variation; hybrids; males; parents; Kenya
Abstract:
... Copulation duration of Glossina pallidipes from Lambwe Valley (0° 35′ S, 34° 15′ E) and Kibwezi Forest (2° 27′ S, 37° 55′ E) in Kenya, was investigated in the laboratory. The difference in mean copulation time between the populations was highly significant. Reciprocal copulations showed that the trait is predominantly or only determined by the male. F₁ and F₂ male hybrid durations were similar and ...
DOI:
10.1111/j.1570-7458.1978.tb02760.x

18. THE Nature and origin of the mid-gut contents in a sap-sucking heteropteran, piezosternum calidum fab.(tessaratominae), and the role of symbiotic bacteria in its nutrition

Author:
GOODCHILD, A.J.P.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 177-188
ISSN:
0013-8703
Subject:
Coreidae; cecum; digestion; microsymbionts; midgut; sap
Abstract:
... Evidence is presented in support of the hypothesis that in Piezosternum calidum the mid-gut contents consist of symbiotic bacteria from the gastric caeca, and are not derived from the plant sap ingested. A similar process has been observed in other large sap-sucking Heteroptera, of which Mygdonia tuberculosa (Coreidae) has been studied as an example, the site of bacterial digestion is usually post ...
DOI:
10.1111/j.1570-7458.1978.tb03020.x

19. Resistance of sorghum bicolor to rhopalosiphum maidis and peregrinus maidis as affected by differences in the growth stage of the host

Author:
FISK, JUDITH
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 227-236
ISSN:
0013-8703
Subject:
Peregrinus maidis; Rhopalosiphum maidis; Sorghum bicolor; developmental stages; reproduction
Abstract:
... The feeding, growth, activity and reproduction of two homopteran species, Rhopalosiphum maidis (Fitch) and Peregrinus maidis (Ashm.) were measured on sorghum plants of different heights. Both species had markedly poorer growth on smaller sorghum plants. The poor growth was found to be associated with less time spent feeding and a corresponding increase in activity. ...
DOI:
10.1111/j.1570-7458.1978.tb02740.x

20. A Study on isoenzyme polymorphism in the tsetse fly glossina morsitans

Author:
GEEST, L.P.S.; CORNELISSEN, A.; TJON-A-JOE, H.P.; HELLE, W.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 269-278
ISSN:
0013-8703
Subject:
Glossina morsitans; aldehydes; enzyme polymorphism; esterases; isozymes; leucyl aminopeptidase; loci; null alleles; Tanzania; Zimbabwe
Abstract:
... Polymorphism was studied for a number of enzyme systems in the tsetse fly Glossina morsitans. Enzyme polymorphism was observed for α-glycerophospate dehydrogenase, aldehyde oxidase and esterases. For esterases, the operation of null alleles was assumed, as otherwise no explanation could be given for the observed frequencies of the variants. Two laboratory colonies and two field populations were co ...
DOI:
10.1111/j.1570-7458.1978.tb02745.x