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1. Über einige inhaltsstoffe der solanaceen und ihre bedeutung für die kartoffelkäferresistenz¹

Author:
SCHREIBER, KLAUS
Source:
Entomologia experimentalis et applicata 1958 v.1 no.1 pp. 28-37
ISSN:
0013-8703
Subject:
Leptinotarsa decemlineata; Solanum dulcamara; Solanum nigrum; Solanum polyadenium; alkaloids; forage; insects; interface phenomena; metabolism; resorption; taste
Abstract:
... A summary report is given of naturally occurring substances in plants which confer resistance to the Colorado potato beetle (Leptinotarsa decemlineata Say). Alkaloid-glycosides occurring in many Solanum and Lycopersicon varieties' are discussed in some detail, and results are reported of some recent investigations of the alkaloids in Solanum dulcamara, S. nigrum, S. polyadenium and Acaulia. An att ...
DOI:
10.1111/j.1570-7458.1958.tb00006.x

2. Dietetic requirements and intermediary protein metabolism of an insect (calliphora erythrocephala meig.)

Author:
SEDEE, J.W.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.1 pp. 38-40
ISSN:
0013-8703
Subject:
Calliphora vicina; ammonia; aquatic animals; aseptic conditions; bacteria; diet; eggs; excretion; imagos; insects; intestinal microorganisms; larvae; nitrogen metabolism; protein metabolism; rearing; toxicity; uric acid
Abstract:
... Calliphora erythrocephala commonly known as the Bluebottle belongs to the Diptera. The larvae of this insect feed on food which is heavily infected with bacteria. Unlike most other terrestrial insects which excrete uric acid, the larvae of C. erythrocephala excrete ammonia, the most toxic end product of nitrogen metabolism. In this direct excretion of ammonia the larvae therefore behave like many ...
DOI:
10.1111/j.1570-7458.1958.tb00007.x

3. HOST PLANT SELECTION IN THE COLORADO BEETLE LARVA: (LEPTINOTARSA DECEMLINEATA SAY): (An etiological approach to food finding in insects)

Author:
WILDE, J.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.1 pp. 14-22
ISSN:
0013-8703
Subject:
Leptinotarsa decemlineata; Solanum demissum; filters; foods; glass; host plants; ingestion; insect behavior; insect nutrition; larvae; locomotion; motivation; odors; paper; plant-insect relations
Abstract:
... In the food finding behaviour of the Colorado beetle larva, random searching and random biting are two apparently spontaneous behaviour elements belonging to different motor systems. Locomotion is directed by light and by host odour, biting is slightly inhibited by indifferent substrates like glass and filter paper. Initiation and maintenance of feeding are partly dependent upon different stimuli, ...
DOI:
10.1111/j.1570-7458.1958.tb00004.x

4. Immunity in solanacies against doryphorus

Author:
Trouvelot, B.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.1 pp. 9-13
ISSN:
0013-8703
Subject:
Leptinotarsa; Solanum melongena; Solanum tuberosum; biological control; chemical treatment; climate; disease resistance; eggplants; immunity; insects; natural enemies; pesticide application; plantations; potatoes; soil; spring; France
Abstract:
... In the study of the forces of nature which can be used, if necessary, to reduce the damage of the Colorado beetle ( Leptinotarsa ​​decemlineata Say), three main lines of research were to be followed. They were approached in 1927, when it appears that one could no longer extinguish the outbreak of the insect discovered in 1924 in southwestern France. These three paths concerned: - the action on the ...
DOI:
10.1111/j.1570-7458.1958.tb00003.x

5. Physiological condition of the host-plant and susceptibility to aphid attack

Author:
KENNEDY, J.S.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.1 pp. 50-65
ISSN:
0013-8703
Subject:
Aphidoidea; host plants; insect pests; insect resistance; plant pests; plant physiology; plant-insect relations
Abstract:
... Familiar types of physiological variation in aphid host-plants, such as in the pattern of growth or the water economy, have a great influence upon the growth, development and behaviour of aphids, for reasons that we are beginning to understand. They would merit fuller exploitation for the purposes of aphid control. ...
DOI:
10.1111/j.1570-7458.1958.tb00009.x

6. THE Behaviour of aphis fabae in selecting its host plants, especially different varieties of vicia faba

Author:
MÜLLER, H.J.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.1 pp. 66-72
ISSN:
0013-8703
Subject:
Aphis fabae; Vicia faba; beans; host plants; host preferences; insect behavior; phloem; varieties
Abstract:
... The different initial infestation of the two field bean varieties Rastatter and Schlanstedter (in the relation 1: 3 till 1: 5) by Aphis (Doralis) fabae Scop, is caused by a preference behaviour of the alates, which land on both varieties of bean in equal numbers, but whereas 99% leave Rastatter in a few minutes, only 90% leave Schlanstedter. ...
DOI:
10.1111/j.1570-7458.1958.tb00010.x

7. THE Chemotactic influence of plant constituents on feeding by phytophagous insects

Author:
THORSTEINSON, A.J.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.1 pp. 23-27
ISSN:
0013-8703
Subject:
chemotaxis; food choices; nutrients; phytophagous insects; taste; toxins
Abstract:
... The available evidence is in agreement with the postulate that all phytophagous insects require chemotactic (usually gustatory) stimuli to release feeding activity. Some of the soluble nutrients in plants serve this function. In the case of oligophagous insects food selection is further guided by perception of non-nutritive substances (token stimuli) of limited botanical distribution. The food ran ...
DOI:
10.1111/j.1570-7458.1958.tb00005.x

8. The role of speed secret in the exchange ratio between animal and food plant in homopters and heteropters

Author:
Nuorteva, Pekka
Source:
Entomologia experimentalis et applicata 1958 v.1 no.1 pp. 41-49
ISSN:
0013-8703
Subject:
Aphidoidea; Cicadellidae; Heteroptera; alpha-glucosidase; amylases; animals; artificial diets; auxins; beta-fructofuranosidase; carboxylic ester hydrolases; digestion; digestive enzymes; food plants; host plants; insects; mesophyll; papain; phloem; physiological state; phytotoxicity; plant growth; polygalacturonase; saliva; salivary glands; secretion; somatotropin; sucrose; surveys; toxins
Abstract:
... The above article is a short survey of the relation between the salivary secretions of the Hemiptera and their host plants. In analyses of the composition secretions in the salivary glands of phytophagous Homoptera and Heteroptera, the most extensive work has been done on the digestive enzymes. Proteases, amylases, saccharase, maltase, pectinase and lipase have been detected, but most commonly onl ...
DOI:
10.1111/j.1570-7458.1958.tb00008.x

9. Influence of sublethal doses of ddt upon the multiplication rate of sitophilus granarius (coleopt. curculionidae)

Author:
KUENEN, D.J.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.2 pp. 147-152
ISSN:
0013-8703
Subject:
DDT (pesticide); Panonychus ulmi; Sitophilus granarius; arthropods; females; mortality; progeny; rearing; reproduction; wheat
Abstract:
... Sitophilus granarius was exposed to very low doses of DDT mixed with the wheat in which it was reared (0.0, 0.10, 0.125, 0.25 mg DDT per 100 g wheat). The weevils exposed to 0.10 and 0.125 mg produced about 20% more offspring than the unexposed weevils. At 0.25 mg DDT the reproduction was even higher per living female in the first five weeks, but mortality was high and the total number of offsprin ...
DOI:
10.1111/j.1570-7458.1958.tb00018.x

10. Some experimental evidence for the survival value of the rootpiercing habits of mansonia larvae (culicidae) to predators

Author:
ASSEM, J.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.2 pp. 125-129
ISSN:
0013-8703
Subject:
Culex quinquefasciatus; Pistia; breathing; fish; insect larvae; predators
Abstract:
... Mansonia larvae pierce Pistia plants with their breathing syphons, and are much less motile than most mosquito larvae. In clear water with no plants present they are eaten as readily by predators (water bugs, beetle larvae, fish) as Culex fatigans. If the Mansonia are attached to Pistia they are less frequently eaten. ...
DOI:
10.1111/j.1570-7458.1958.tb00015.x

11. Some insectary experiments with predacious mites to determine their effect on the development of metatetranychus ulmi (koch) populations

Author:
COLLYER, ELSIE
Source:
Entomologia experimentalis et applicata 1958 v.1 no.2 pp. 138-146
ISSN:
0013-8703
Subject:
Panonychus ulmi; Phytoseius; Typhlodromus; females; host plants; leaves; predatory mites; seedlings; spraying
Abstract:
... As field spraying experiments give results which are difficult to resolve in terms of individual predator species, a series of experiments has been carried out in an insectary to find out what effect predacious mites of various species have upon populations of Meta-tetranychus ulmi (Koch), in the absence of other prey. Known numbers of each mite species were placed on seedling plants, and the deve ...
DOI:
10.1111/j.1570-7458.1958.tb00017.x

12. THE Importance of drinking water to larval insects

Author:
MELLANBY, KENNETH; FRENCH, R.A.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.2 pp. 116-124
ISSN:
0013-8703
Subject:
diapause; drinking water; insect larvae; soil; stored products
Abstract:
... Many insect larvae have been found to drink water. These include larvae inhabiting stored products, phytophagous species, larvae found in the soil, and species dehydrated during diapause. The water taken in may enable the larvae to withstand unfavourable conditions. ...
DOI:
10.1111/j.1570-7458.1958.tb00014.x

13. THE Quantitative study of soil meiofauna: ii. sample preparation and routine methods for handling the catch

Author:
MURPHY, PAUL W.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.2 pp. 109-115
ISSN:
0013-8703
Subject:
Acari; Collembola; fauna; soil
Abstract:
... Details of a method for preparation of undisturbed samples for extraction with a modified funnel are given, together with techniques for the quantitative assessment of the catch (especially Acarina and Collembola). These techniques include handling, visual examination and storage of the fauna. ...
DOI:
10.1111/j.1570-7458.1958.tb00013.x

14. Effect of larval population density on the adult morphology of two species of lepidoptera, plusia gamma l. and pieris brassicae l

Author:
Long, D.B.; Zaher, M.A.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.3 pp. 161-173
ISSN:
0013-8703
Subject:
Autographa gamma; Pieris brassicae; adults; body weight; color; diapause; larvae; legs; locusts; population density; pupae; temperature
Abstract:
... The morphological effects of population density in locusts in the production of ‘phases' is now well established and in recent years somewhat parallel effects have been observed in the larvae of Lepidoptera. Unlike locusts Lepidoptera pass through a quiescent pupal period but nevertheless the adult may be affected. In both P. gamma and P. brassicae adults from crowded larval cultures were smaller ...
DOI:
10.1111/j.1570-7458.1958.tb00020.x

15. Host finding of choetospila elegans westw. (hym. chalcid.) a parasite of sitophilus granarius l. (coleopt. curcul.)

Author:
ASSEM, J.; KUENEN, D.J.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.3 pp. 174-180
ISSN:
0013-8703
Subject:
Sitophilus granarius; Theocolax elegans; animals; ectoparasites; grains; larvae
Abstract:
... The parasite Choetospila elegans is an ectoparasite on Coleoptera larvae and was studied in relation to Sitophilus granarius. Only 3rd and 4th stage larvae are parasitized, as a rule, and it is possible that late 2nd stage larvae are occasionally attacked. Larvae within grain are found by detection of mechanical stimuli set up by the larvae's activity which can be imitated by other animals moving ...
DOI:
10.1111/j.1570-7458.1958.tb00021.x

16. Relation between growth pattern and resistance to aphis fabae scopoli in three varieties of field bean (vicia faba l.)

Author:
TAMBS-LYCHE, H.; KENNEDY, J.S.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.3 pp. 225-239
ISSN:
0013-8703
Subject:
Acyrthosiphon pisum; Aphis fabae; Vicia faba; beans; crop yield; flowers; fruits; leaves; nutrition; phloem; plant growth; sap; shoots; spraying
Abstract:
... Three varieties of Field (Spring) Bean were compared in a small plot trial: Rastatt (known to be relatively resistant to Aphis fabae), Schlanstedt (very susceptible) and an English Tick Bean. Records were kept of the growth of the plants and of the day-to-day incidence of winged Aphis fabae and Acyrthosiphon pisum, with periodic aphicidal spraying to minimize damage to the plants. Schlanstedt was ...
DOI:
10.1111/j.1570-7458.1958.tb00026.x

17. THE Alarm reaction of mosquito larvae

Author:
MELLANBY, KENNETH
Source:
Entomologia experimentalis et applicata 1958 v.1 no.3 pp. 153-160
ISSN:
0013-8703
Subject:
Aedes; Anopheles; Culex; acclimation; geotaxis; insect larvae; phototaxis; temperature
Abstract:
... When Aedes larvae are alarmed they swim actively to the bottom; they recover by floating passively upwards. Culex and Anopheles larvae sink passively when alarmed; they swim actively to the surface on recovery. Repeated stimulation produces “stimulus satiation”, but a different type of stimulus can then give a complete response. Geotaxis and phototaxis are concerned in the alarm reaction in Aedes; ...
DOI:
10.1111/j.1570-7458.1958.tb00019.x

18. THE Orientation of horse flies and deer flies (tabanidae, diptera):: i. the attractance of heat to tabanids

Author:
THORSTEINSON, A.J.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.3 pp. 191-196
ISSN:
0013-8703
Subject:
Tabanidae; heat; solar radiation
Abstract:
... Tabanid flies display an exceptionally strong tendency to orientate to and congregate in enclosures which accumulate heat during daylight. In order to study this behaviour to the best advantage and perhaps also to exploit it toward practical control a “helio-thermal” trap was designed and tested. This trap converts solar radiation to heat and is so designed that tabanids collect in a killing bottl ...
DOI:
10.1111/j.1570-7458.1958.tb00023.x

19. Multiplication of potato leaf roll virus in the aphid myzus persicae (sulz.)

Author:
STEGWEE, D.; PONSEN, M.B.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.4 pp. 291-300
ISSN:
0013-8703
Subject:
Myzus persicae; Potato leafroll virus; hemolymph; insects; juices; reproduction; viruses
Abstract:
... Insect-to-insect transmission of potato leaf roll virus proved possible by injecting either juice or haemolymph from viruliferous Myzus persicae into virus-free ones. In serial transmission experiments, in which injection of haemolymph was practised, the virus could be carried through as many as 15 successive aphid-to-aphid passages without access of inoculated insects to any plants that are susce ...
DOI:
10.1111/j.1570-7458.1958.tb00033.x

20. Observations on threshold intensity and sensitivity to different wave lengths of photoperiodic responses in the colorado beetle (leptinotarsa decemlineata say)

Author:
WILDE, J.; BONGA, H.
Source:
Entomologia experimentalis et applicata 1958 v.1 no.4 pp. 301-307
ISSN:
0013-8703
Subject:
Leptinotarsa decemlineata; wavelengths; white light; Colorado
Abstract:
... The threshold intensity of white light for photoperiodic responses of the Colorado beetle is below 0,1 lux (0,4 ergs/cm²/sec.). Above this value, the responses increase with the intensity until above 5 lux (20 ergs/cm²/sec.) they remain more or less constant. Experiments with filtered light (423-675 mμ) and infrared (> 700 mμ) revealed that even 675 mμ is clearly active. ...
DOI:
10.1111/j.1570-7458.1958.tb00034.x