| investigative studies of the dermatitis caused by the larva of the brown-tail moth (euproctis chrysorrhoea linn.) i. clinical and experimental findings. | a description is given of both naturally occurring and experimentaly produced brown-tail moth caterpillar dermatitis. epicutaneous test reactions were studied in a group of 45 persons, utilizing different setae preparations obtained from euproctis chrysorrhoea l. about 70% of the individuals developed marked reactions upon contact with untreated nettling hairs. the early skin lesions were as a rule erythematous and wheal-like in character (urticarial), gradually becoming more infiltrated and dev ... | 1975 | 1200705 |
| investigative studies of the dermatitis caused by the larva of the brown-tail moth (euproctis chrysorrhoea linn.) ii. histopathology of skin lesions and scanning electron microscopy of their causative setae. | two different aspects related to the dermatitis caused by the so-called nettling hairs of the larva of the brown-tail moth, euproctis chrysorrhoea l., are documented. the first part describes the sequence of histopathologic changes associated with the inflammatory process in the human skin induced by epicutaneous application untreated (ut-n) and heat treated (ht-n) nettling hairs. the penetration of untreated and heat treated nettling hairs into the epidermis is evident from their presence in 1 ... | 1976 | 1275552 |
| mass production and purification of euproctis chrysorrhoea (l.) nuclear polyhedrosis virus. | the rearing of larval euproctis chrysorrhoea (l.) on an artificial wheatgerm diet is described. the larvae grew well on the diet, but took over ten weeks to complete their development, reflecting their prolonged life-span in the field. using these larvae it was possible to mass produce a nuclear polyhedrosis virus (npv) isolated from this species, with a view towards its use as a biological insecticide. a mean of 5.86 x 10(9) semi-pure npv polyhedral inclusion bodies/g virus-killed larva was pro ... | 1989 | 2674181 |
| [putrescine--an inhibitor of the reaction of carbon dioxide hydration in hemolymph of lepidoptera]. | using high-voltage electrophoresis, thin-layer chromatography and chemical analysis tetramethylene diamine was found in hemolymph of 8 lepidoptera species (bombyx mori l., ocneria dispar l., euproctis chrysorrhoea l., yponomeuta malinella l., pieris brassicae l., aporia crataegi l., melacosoma neustria l., mamestra brassicae l.). its content reaches 11 mm 1 l of hemolymph. the absence of tetramethylene diamine in the intestine wall and malpighian vessels and its presence in the fat body permits ... | 1980 | 6770522 |
| protease activities in the spicule venom of euproctis caterpillars. | the spicule venoms of euproctis chrysorrhoea and euproctis subflava were investigated for their capacity to hydrolyze chromogenic tripeptide substrates with selective affinities for various serine proteases. seven substrates were assayed with affinities for trypsin and thrombin, trypsin and urokinase, serine proteases, chymotrypsin, glandular kallikrein, plasma kallikrein and plasmin. venom material has a broad spectrum of affinities for the substrates with relative high plasma kallikrein activi ... | 1982 | 7048629 |
| isolation and insecticidal effects of some bacteria from euproctis chrysorrhoea l. (lepidoptera: lymantriidae). | in this study, we investigated the bacterial pathogens of euproctis chrysorrhoea and tested for their insecticidal activities. based on colony color and morphology, four isolates were determined. according to morphological, physiological and biochemical characters of the isolates, they were identified as enterobacter aerogenes, lactobacillus sp., bacillus thuringiensis and micrococcus luteus. the insecticidal effects of these bacterial isolates on third-fourth instar larvae of euproctis chrysorr ... | 2000 | 11293654 |
| nosema chrysorrhoeae n. sp. (microsporidia), isolated from browntail moth (euproctis chrysorrhoea l.) (lepidoptera, lymantriidae) in bulgaria: characterization and phylogenetic relationships. | a new microsporidian parasite nosema chrysorrhoeae n. sp., isolated in bulgaria from the browntail moth (euproctis chrysorrhoea l.), is described. its life cycle includes two sequential developmental cycles that are similar to the general developmental cycles of the nosema-like microsporidia and are indistinguishable from those of two nosema spp. from lymantria dispar. the primary cycle takes place in the midgut tissues and produces binucleate primary spores. the secondary developmental cycle ta ... | 2006 | 16410011 |
| armillaria mellea as a cause of oak decline in hatam-baigh forest of iran. | a200 ha forest of "hatam-baig" is located in ardebil province on the northwest of iran. oak trees (quercus macranthera fisch & mey) in this forest have been faced with declining and extinction since 1991, that has destructed about one third of the forest trees until now. this disorder was expressed in various symptoms including wilting, defoliation and decline. in order to identify factors causing decline, a study was managed from 1998 to 2001. samples were taken from roots, trunks, crowns and s ... | 2005 | 16637190 |
| forest insects and climate change: long-term trends in herbivore damage. | long-term data sets, covering several decades, could help to reveal the effects of observed climate change on herbivore damage to plants. however, sufficiently long time series in ecology are scarce. the research presented here analyzes a long-term data set collected by the hungarian forest research institute over the period 1961-2009. the number of hectares with visible defoliation was estimated and documented for several forest insect pest species. this resulted in a unique time series that pr ... | 2013 | 24324869 |
| age and size thresholds for pupation and developmental polymorphism in the browntail moth, euproctis chrysorrhoea (lepidoptera: lymantriidae), under conditions that either emulate diapause or prevent it. | size and age thresholds for pupation are important life history traits of insects. they are the ultimate consequences of the underlying physiological mechanism that optimize resource allocation. such thresholds may have a plastic response under time-varying environmental conditions, developmental polymorphism (i.e., plasticity in the number of instars before pupation) being a common strategy adopted by insects to overcome this challenging situation. in this study, we systematically explore the v ... | 2009 | 19589342 |
| factors influencing larval survival of the invasive browntail moth (lepidoptera: lymantriidae) in relict north american populations. | scant attention has been paid to invasive species whose range and abundance has decreased after an initial range expansion. one such species is the browntail moth euproctis chrysorrhoea l, which was discovered in the eastern united states in 1897. its range expanded until 1914; after 1915, however, its range contracted and now it persists in only two isolated coastal locations. although a biological control agent has been implicated in this range collapse, cold inland winter temperatures may als ... | 2008 | 19161686 |
| implicating an introduced generalist parasitoid in the invasive browntail moth's enigmatic demise. | recent attention has focused on the harmful effects of introduced biological control agents on nontarget species. the parasitoid compsilura concinnata is a notable example of such biological control gone wrong. introduced in 1906 primarily for control of gypsy moth, lymantria dispar, this tachinid fly now attacks more than 180 species of native lepidoptera in north america. while it did not prevent outbreaks or spread of gypsy moth, we present reanalyzed historical data and experimental findings ... | 2006 | 17089674 |
| identification of sex pheromone of browntail moth,euproctis chrysorrhoea (l.) (lepidoptera: lymantriidae). | a unique sex attractant pheromone was isolated and identified from extracts of ovipositor tips from the female browntail moth (lepidoptera: lymantriidae). the pheromone compound, (z,z,z,z)-7,13,16,19-docosatetraen-1-ol isobutyrate, ch3ch2ch=chch2ch=chch2ch= ch(ch2)4ch=ch(ch2)6o2cch(ch3)2, was identified by a combination of gas chromatography, mass spectrometry, and microreactions and was confirmed by synthesis. traps baited with 5-50 μg of the synthetic pheromone, dispensed from rubber septa tre ... | 1991 | 24259074 |
| [urticating hairs of "brown-tail" moth (euproctis chrysorrhoea l.) (lepidoptera): preliminary studies in urban and laboratory]. | urticating hairs of the brown-tail moth (euproctis chrysorrhoea l.) are detectable in the air using apparatus designed for the collection of airborne microorganisms and pollen research studies. the hairs are produced by caterpillars and are distributed by air currents or via moths. they were collected in bordeaux. in the laboratory a nycthemeral cycle of hair emission is observed and is correlated with the biological activities of these species. | 1991 | 1905972 |
| [the brown-tail moth of bombyx euproctis chrysorrhoea l. (lepidoptera) responsible for lepidopterism in france: biological interpretation]. | a scanning electron microscope study has enabled an explanation as to why the brown-tail moth provokes lepidopterism. the brown-tail moth only provokes lepidopterism via a transmission of the urticating hairs of its caterpillar. urticating moths (genus hylesia and anaphae) protect their eggs and young caterpillars with urticating hairs, thus it is very ambiguous to label erucism as the contact dermatitis produced by caterpillar production or lepidopterism as the contact dermatitis caused by moth ... | 1989 | 2510913 |
| [effect of ddt/lindane on the lepidoptera parasite eupteromalus peregrinus (pteromalidae)]. | a control action against caterpillars of euproctis chrysorrhoea (lep.: lymantriidae) in spring with the insecticide "bercema-spritzaktiv 80" (72% ddt, 7% lindane) did not destroy nor visible deteriorate a population of the hymenopterous parasite eupteromalus peregrinus (pteromalidae). the possible causes are discussed. | 1980 | 6160792 |
| investigative studies of the dermatitis caused by the larva of the brown-tail moth, euproctis chrysorrhoea l. (lepidoptera, lymantriidae). iv. further characterization of skin reactive substances. | | 1977 | 911192 |
| investigative studies of the dermatitis caused by the larva of the brown-tail moth, euproctis chrysorrhoea l. (lepidoptera, lymantriidae). iii. chemical analysis of skin reactive substances. | | 1977 | 911191 |
| dermatitis caused by the larva of the brown-tail moth, euproctis chrysorrhoea l. (lymantriidae). | | 1977 | 863075 |
| [dermatoses causes by caterpillars of euproctis chrysorrhoea & other butterflies]. | | 1958 | 13542248 |