Publications

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a new member of the akh/rpch family that stimulates locomotory activity in the firebug, pyrrhocoris apterus (heteroptera).a new member of the akh/rpch family was isolated and identified from the corpora cardiaca of the firebug pyrrhocoris apterus. the peptide was isolated in a single step by reversed phase hplc and the structure deduced from the multiple ms (ms(n)) electrospray mass spectra and amino acid analysis as that of an octapeptide with the sequence pglu-leu-asn-phe-thr-pro-asn-trp-nh(2): this sequence was confirmed by synthesis. the synthetic peptide induced lipid mobilisation and stimulated locomotory act ...200010802240
ttagg telomeric repeats in chromosomes of some insects and other arthropods.we studied the occurrence of the ttagg telomere repeats by fluorescence in-situ hybridization (fish) and southern hybridization in ten insect species and two other arthropods. (ttagg)n-containing telomeres were found in three lepidoptera species, the silkworm bombyx mori (in which the telomeric sequence was recently discovered), the flour moth ephestia kuehniella, and the wax moth galleria mellonella, in one species of hymenoptera, the honey bee apis mellifera, in one species of coleoptera, the ...199910560968
wing morph-related physiological differences in adults of temperate population of pyrrhocoris apterus (l.) (heteroptera: pyrrhocoridae).the reproductive and diapausing adult females of brachypterous morph and macropterous females with reproductive arrest of non-diapause type, originating from the laboratory cultures of pyrrhocoris apterus, were studied for their feeding and drinking behaviour, digestive enzyme activities, and carbohydrate and lipid contents. the highest feeding and drinking activities were observed in reproductive brachypters, the lowest in macropters. macropters also differed from brachypters by lower activitie ...199810048189
growth inhibitory effect of juvenile hormone analogues on epimastigotes of trypanosoma cruzi.several compounds, structurally related to the insect growth regulator fenoxycarb, exhibited interesting inhibition action to control proliferation of trypanosoma cruzi, the parasite responsible for chagas' disease. some of these drugs were shown to be potent growth inhibitors of this parasite. all of these drugs had previously presented juvenoid activity on several non-related bug species such as tenebrio molitor, galleria mellonella, dysdercus cingulatos, and pyrrhocoris apterus.19989873713
temperature regulation of supercooling and gut nucleation in relation to diapause of pyrrhocoris apterus (l.) (heteroptera)the heteropteran pyrrhocoris apterus (l.) does not survive freezing of its body fluids; there is a good correlation between values of survival at subzero temperatures and the supercooling point (scp), i.e., the temperature at which body fluids start to freeze. the decrease of the scp and thus the increase in cold hardiness is regulated by photoperiod and temperature. the relative importance of these factors depends on the physiological state of the insect. the scp is about -7°c at the onset ...19979028917
pyrrhocoris apterus (l.) chronome's response to lighting may reveal changes in rhythms that switch developmental pathways. 20178131674
novel inducible antibacterial peptides from a hemipteran insect, the sap-sucking bug pyrrhocoris apterus.insects belonging to the recent orders of the endopterygote clade (lepidoptera, diptera, hymenoptera and coleoptera) respond to bacterial challenge by the rapid and transient synthesis of a battery of potent antibacterial peptides which are secreted into their haemolymph. here we present the first report on inducible antibacterial molecules in the sap-sucking bug pyrrhocoris apterus, a representative species of the hemiptera, which predated the endoptergotes by at least 50 million years in evolu ...19948002963
blastokinesis in embryos of the bug, pyrrhocoris apterus. a light and electron microscopic study 1. normal blastokinesis.in the bug, pyrrhocoris apterus, blastokinesis (a reversal of the position of the embryo within the egg) is seen to involve contraction of the serosa that is attached to the embryo's head. as the serosal cells change from squamous to columnar in the course of blastokinesis, a dense zone of microfilaments appears just under the apical surface. many apical protrusions develop above this zone. after the embryo is in its final position the zone disappears and later the cells degenerate. laterally, t ...19817264550
juvenoids cause some insects to form composite cuticles.metamorphosing insects treated with juvenoids may secrete composite cuticles which combine morphological features of two metamorphic stages within the area secreted by an individual epidermal cell. characters found combined were pigmentation, tanning, surface sculpturing, and microtrichiae. neighbouring cells frequently form different types of cuticle. composite cuticles should not be confused with the more common mosaic cuticles, which are composed of discrete areas with different stage-specifi ...19827153697
[on the fine structure of the stink glands of the fire bug (pyrrhocoris apterus l., geocorisae). ii. report. the exit duct system and the non-glandular parts]. 19665994736
[on the fine structure of the scent glands of firebugs (pyrrhocoris apterus l., geocorisae). i. on the functional morphology of the gland cell]. 19665982714
on steroids 103. molting deficiencies produced by some sterol derivatives in an insect (pyrrhocoris apterus l.). 19665967065
'paper factor' as an inhibitor of the embryonic development of the european bug, pyrrhocoris apterus. 19665954582
juvenile hormone: identification of an active compound from balsam fir.a sesquiterpenoid ester with high juvenile hormone activity for pyrrhocoris apterus (l.) was isolated from balsam fir, abies balsamea (l.) miller, and identified as the methyl ester of todomatuic acid.19665919750
growth disorders of the bug pyrrhocoris apterus and the 'juvenile hormone' effect of certain papers. 19665914235
[mating behavior following termination of imaginal diapause and its hormonal control in the bug, pyrrhocoris apterus l. (pyrrhocoridae, heteroptera)]. 20165737689
the inductors of differentiation of prefollicular tissue and the follicular epithelium in ovarioles of pyrrhocoris apterus (heteroptera). 19685693888
[on the fine structure of the scent glands of the fire bug (pyrrhocoris apterus l., geocorisae). the 2d larval abdominal gland]. 19675599688
cytophotometry of dna and histone in meiosis of pyrrhocoris apterus. 19705439577
juvenile hormone activity for the bug pyrrhocoris apterus. 19655217430
insect hormones and insect control, or, sex and the single pyrrhocoris apterus. 19715136553
[isolation and study of the mode of action of polygalacturonase of insects (pyrrhocoris apterus)]. 19684967820
[paracrystalline endoplasmic reticulum in the ovary of pyrrhocoris apterus (heteroptera)]. 19674385297
metabolic phosphorylation and excretion of some nucleoside analogues in insects.after oral administration to the hemipteran insect pyrrhocoris apterus l. (fireburg), the l-enantiomers and certain open-chain analogues of the nucleosides are rapidly converted into the corresponding monophosphates, which are then excreted. this metabolic phosphorylation is almost quantitative; it occurs at the primary as well as at the secondary hydroxylic groups. the process is abolished when the respective nucleoside analogues contain a free carboxylic group. by contrast, the phosphorylating ...20144026989
inhibition of phosphatase by open-chain nucleoside analogues in insects.(s)-9-(2,3-dihydroxypropyl) adenine (dhpa), d-eritadenine and some other open-chain nucleoside analogues, which exhibit adverse biological effects in microorganisms, plants and animals, cause pronounced inhibition of intestinal phosphatases in the hemipteran insect pyrrhocoris apterus. the rate of p-nitrophenylphosphate hydrolysis by homogenates from intestinal epithelium and malpighian tubules was inhibited up to 94% by 2-10 millimolar concentrations of these drugs. this effect is stronger than ...19892537747
nervous inhibition of corpora allata by photoperoid in pyrrhocoris apterus. 1976972704
function of the neuroendocrine complex in diapausing pyrrhocoris apterus females. 1977558247
studies of the spermatogenesis in the firebug, pyrrhocoris apterus l. (heteroptera). i. a unique basal body-associated plaque carrying a microtubule organizing center (mtoc) in spermatids. 1979480411
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