EJE, vol. 90 (1993), issue 1
Eur. J. Entomol. 90 (1): 1, 1993
Diapause and cold hardiness of phytoseiid mites (Acarina: Phytoseiidae)
Eur. J. Entomol. 90 (1): 3-10, 1993
Because of their economic importance as biological control agents, the basic biology of phytoseiid mites has been studied extensively. Diapause induction has been investigated in a number of species, with consistent results; however, very few studies have addressed cold hardiness of these mites. Recent studies of cold hardiness and cold storage of Phytoseiulus persimilis Athias-Henriot and Amblyseius cucumeris (Oudemans) indicate that cold exposure had greater adverse effects on nondiapausing A. cucumeris, which normally overwinter in diapause, than on P. persimilis, which do not diapause. This might be explained in terms...
Theory for quantitative inheritance of behavior in a protelean parasitoid, Muscidifurax raptorellus (Hymenoptera: Pteromalidae)
Eur. J. Entomol. 90 (1): 11-21, 1993
Two races of Muscidifurax raptorellus Kogan & Legner (Hymenoptera: Pteromalidae) reveal combinations of extranuclear and chromosomal inheritance for the quantitative trait, gregarious oviposition. In the first extranuclear phase prior to chromosomal inheritance, unknown substances transferred at mating cause a portion (<= 1/2) of the intensity of a particular quantitative trait present in the males' genome to be expressed phenotypically in the inseminated females within an hour of mating. The ability to change the adult female's expression of the quantitative character, either positively or negatively, challenges accepted views of polygenic...
Book Review: Synthesis of the Holarctic Miridae (Heteroptera): Distribution, Biology and Origin, with Emphasis on North America.
Eur. J. Entomol. 90 (1): 22, 1993
Wheeler A.G. Jr. & Henry T.J.: Synthesis of the Holarctic Miridae (Heteroptera): Distribution, Biology and Origin, with Emphasis on North America. Entomological Society of America, Lanham, Maryland, 1992, v + 282 pp., 31 figs, 77 maps. The Tomas Say Foundation, Vol. 15.
Effects of proctolin on autonomic physiological functions in insects
SLAMA K., KONOPINSKA D., SOBOTKA W.
Eur. J. Entomol. 90 (1): 23-35, 1993
The pharmacological effects of proctolin, [L-Dopa2]-proctolin, [Phe(OMe)2]-proctolin and [Cha(4-OMe)2]-proctolin were studied on pupae of the mealworm, Tenebrio molitor. The results were obtained by prolonged monitoring of extracardiac pulsations in haemocoelic pressure. These pulsations revealed the functions of the autonomic nervous system (coelopulse). The administration of proctolin in 100 nM to 5 µM concentrations increased the amplitude of haemocoelic pressure pulsations up to six-fold, within a few minutes. With dosages corresponding to 1 µM concentrations, the effects of proctolin culminated...
Book Review: Modern Acarology.
Eur. J. Entomol. 90 (1): 36, 1993
Dusbábek F. & Bukva V. (eds): Modern Acarology. Vol. 1, 2. Proceedings of the VIII International Congress of Acarology. Academia, Praha, 1991.
Immunoreactive progesterone concentration in some tissues of the cockroach Nauphoeta cinerea (Blattodea: Panchloridae) during development
TAKAC P., KOZANEK M., SOMOGYIOVA E., VYBOH P.
Eur. J. Entomol. 90 (1): 37-44, 1993
The levels of progesterone radioimmunoassay-positive material in the gonads, intestine and haemolymph of the cockroach Nauphoeta cinerea during adult ontogenetic development were studied. The animals were divided into two groups: group 1 - control males and females reared for a period of 36 days after adult ecdysis at temperature 29 ± 1°C; group 2 - experimental males and females reared from day 8 to day 18 at 15°C and then at the same temperature as cockroaches of group 1. The immunoreactive progesterone concentration in gonads and intestine of females from group 1 reached the highest value on day 24 and 27. In females from group 2,...
Kin recognition: egg and larval cannibalism in Adalia bipunctata (Coleoptera: Coccinellidae)
AGARWALA B.K., DIXON A.F.G.
Eur. J. Entomol. 90 (1): 45-50, 1993
Adult female two spot ladybirds Adalia bipunctata (L.) were reluctant to eat their own eggs. Similarly, second instar larvae avoided eating sibling eggs. However, adult males did not appear to avoid eating eggs they had sired and hungry third instar larvae showed no reluctance to consume younger sibling larvae. These results indicate that female beetles and young larvae are capable of kin recognition. The adaptive significance of this is discussed.
Book Review: Insects of Panama and Mesoamerica: Selected Studies.
Eur. J. Entomol. 90 (1): 50, 1993
Quintero D. & Aiello A. (eds): Insects of Panama and Mesoamerica: Selected Studies. Oxford University Press, Oxford, 1992, 692 pp.
Predicting development times of six stored-product moth species (Lepidoptera: Pyralidae) in relation to temperature, relative humidity, and diet
SUBRAMANYAM B., HAGSTRUM D.W.
Eur. J. Entomol. 90 (1): 51-64, 1993
A four-parameter nonlinear regression model was fitted to development data of six stored-product moth species (Lepidoptera: Pyralidae) reared at various constant temperatures, and at 60-80% relative humidity on wheat or wheat-based diets. The model provided new information and quantitative description for predicting egg, larval, pupal, and egg-to-adult (total) development times, and also was useful in comparing the influence of relative humidity and diet on development times. Averaged across the six moth species, about 8%, 77%, and 15% of total development time was spent in egg, larval, and pupal stages, respectively. Temperature had the greatest influence...
Antifeedant activity of some sesquiterpenoids of the genus Lactarius (Agaricales: Russulaceae)
DANIEWSKI W.M., GUMULKA M., PTASZYNSKA K., SKIBICKI P., BLOSZYK E., DROZDZ B., STROMBERG S., NORIN T., HOLUB M.
Eur. J. Entomol. 90 (1): 65-70, 1993
A test with wafer discs was used to examine the ability of 20 compounds to inhibit feeding in adults of Sitophilus granarius and Tribolium confusum as well as in the larvae of Tribolium confusum and Trogoderma granarium. The compounds tested were sesquiterpenoids of lactarane, isolactarane, marasmane and 13-normarasmane skeletons, either isolated from species of Lactarius or their synthetically prepared derivatives. The obtained results of the antifeedant activity are discussed.
Efficiency of steinernematid nematodes (Nematoda: Steinernematidae) in controlling larvae of the black vine weevil, Otiorrhynchus sulcatus (Coleoptera: Curculionidae) in laboratory and field experiments
MRACEK Z., JISKRA K., KAHOUNOVA L.
Eur. J. Entomol. 90 (1): 71-76, 1993
Laboratory and field experiments were performed to test the ability of steinernematid nematodes to control larvae of the black vine weevil, Otiorrhynchus sulcatus, which infests rhododendrons and azaleas in Czech Republic. Of five strains tested in the laboratory the best results were achieved with the Steinernema feltiae strain Hyl isolated in Czech Republic, which provided a 100% elimination of the weevil larvae on azaleas in laboratory tests. Field tests were made in a nursery of ornamentals at Plzen-Krimice where an outbreak of the pest had lasted a long time. Preventative treatment, three releases of the nematode, was performed in...
Leiodes graeca sp. n. from Greece (Coleoptera: Leiodidae)
Eur. J. Entomol. 90 (1): 77-78, 1993
Leiodes (s. str.) graeca sp. n. from Greece is described and distinguished from the similar Leiodes brunnea (Sturm) and from all other Palaearctic species of the genus.
A review of the genus Diazosma (Diptera: Trichoceridae)
STARY J., MARTINOVSKY J.
Eur. J. Entomol. 90 (1): 79-85, 1993
Within the genus Diazosma, previously considered monotypic, three species are recognized, two European and one North American. D. seclusum sp. n. is described from the Czech Republic. The other species, D. hirtipenne (Siebke) and D. subsinuatum (Alexander), are redescribed and male and female genitalia are illustrated for all the three species. Nomenclature within the genus is discussed from various aspects.
Book Review: Advances in Coleopterology.
Eur. J. Entomol. 90 (1): 86, 1993
Zunino M., Bellés X. & Blas M (eds): Advances in Coleopterology. European Association of Coleopterology, Barcelona, 1991, 324 pp., 248 Figs (drawings, photographs and micrographs), 22 tables.
Four new species of Chaetocladius (Diptera: Chironomidae) from India
BHATTACHARYAY S., CHATTOPADHYAY S., CHAUDHURI P.K.
Eur. J. Entomol. 90 (1): 87-94, 1993
Four new species of the genus Chaetocladius Kieffer (Diptera: Chironomidae) are described: Chaetocladius artistylus, C. curvatus, C. dilatus and C. tenuiflexus. A key is provided to the Indian species of the genus.
Role of temperature and photoperiod in diapause regulation in Czech populations of Dolycoris baccarum (Heteroptera: Pentatomidae)
HODEK I., HODKOVA M.
Eur. J. Entomol. 90 (1): 95-98, 1993
Dolycoris baccarum (L.) populations from the Prague region (52°N) display a facultative adult diapause. The induction of diapause is governed by photoperiod, long day averting it. High temperature tends to prevent diapause even under a short-day photoperiod.
Microsporidian infection of the alfalfa snout beetle, Otiorrhynchus ligustici (Coleoptera: Curculionidae), and biological protection of hop plants
Eur. J. Entomol. 90 (1): 99-100, 1993
Adults of the alfalfa snout beetle, Otiorrhynchus ligustici (L.), were collected in hop gardens near Zatec in Czech Republic, and examined for microsporidian infection. Nosema otiorrhynchi Weiser, 1951 causes a general infection. The spores are ovoid in shape and measure 3.8-4 × 1.8-2 µm. The incidence of Nosema infection ranged from 0 to 95% in samples from various sites. The prospects of introducing this microsporidian into populations of O. ligustici are discussed.
Book Review: Application of Entomology to Criminology.
Eur. J. Entomol. 90 (1): 101, 1993
Daněk L.: Application of Entomology to Criminology. Publications of the Criminological Institute No. 40, Praha, 1990, 142 pp., 80 Figs. In Czech.
European Society of Entomologists. New directions for entomologists in the new Europe.
Eur. J. Entomol. 90 (1): 102, 1993