Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| 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 ... | 1997 | 9028917 |
| 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 ... | 1994 | 8002963 |
| chemistry of defensive secretions in nymphs and adults of fire bug,pyrrhocoris apterus l. (heteroptera, pyrrhocoridae). | the defensive secretions from the nymphs and the adults of both sexes inp. apterus were chemically investigated. forty components were identified from the nymphal posterior dorsoabdominal glands and 35 from the adult metathoracic glands of both sexes. within the 43 identified chemicals, we found 23 aldehydes, five saturated hydrocarbons, five alcohols, three ketones, three lactones, two terpenes, one phenol and one ester. thirteen of these compounds had never been reported within the heteroptera ... | 1992 | 24254711 |
| 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 ... | 1989 | 2537747 |
| 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 ... | 1982 | 7153697 |
| 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 ... | 1981 | 7264550 |
| 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. | 1979 | 480411 | |
| morphological effects of juvenile hormone mimics on embryonic development in the bug,pyrrhocoris apterus. | embryos ofpyrrhocoris apterus exposed to juvenile hormone mimics (jh) were examined throughout development to determine the progressive effects of treatment. prior to blastokinesis whole experimental embryos did not differ morphologically from control embryos fixed at the same stage. treated embryos failed to complete blastokinesis due to abnormal breakage of the extra-embryonic membranes.in the embryo-larva transition, jh exposure interfered with dorsal closure, with the consolidation of the ne ... | 1977 | 28304913 |
| function of the neuroendocrine complex in diapausing pyrrhocoris apterus females. | 1977 | 558247 | |
| nervous inhibition of corpora allata by photoperoid in pyrrhocoris apterus. | 1976 | 972704 | |
| behavioral regulation of developmental cycle in pyrrhocoris apterus l. (heteroptera: pyrrhocoridae). | during the warm season the larvae of pyrrhocoris apterus select in their natural habitats places with temperatures which do not exceed 24°c on average even at the hours of maximum sunshine. at the same time other places of their habitats have temperatures up to 50°c. this active behavioral selection of the microclimate regulates the speed of p. apterus development and entertains the monovoltine cycle in climatic, conditions of central europe. a less rigorous choice of the microclimate, even when ... | 1976 | 28308254 |
| insect hormones and insect control, or, sex and the single pyrrhocoris apterus. | 1971 | 5136553 | |
| induction of adult diapause in pyrrhocoris apterus l. by short cold exposure. | the ripening of ovaries in the females of pyrrhocoris apterus can be inhibited not only by short-day photoperiod but also by cold shocks during the first week of the adult life.ovaries in a part of the females are prevented from ripening by transferring the bugs from 25° c and long-day photoperiod to substantially lower temperatures for 2 (or 4) days. the oviposition is inhibited at least for 3 weeks after the return to original conditions favourable for reproduction. this effect is achieved whe ... | 1971 | 28310755 |
| cytophotometry of dna and histone in meiosis of pyrrhocoris apterus. | 1970 | 5439577 | |
| prevention of metamorphosis by exposure of insect eggs to juvenile hormone analogs. | metamorphosis of the bugs pyrrhocoris apterus and oncopeltus fasciatus is blocked by the application of juvenile hormone analogs to the eqgs 4 weeks earlier. one or more supernumerary larval molts occur to form "giant" larvae which routinely die without undergoing netamorphosis. when the corpora allatta were excised at the outset of the fifth larval stage, the entire phenomenon vanished and all individuals underwent normal metamorphosis. the inhibition of metamorphosis can therefoore be attribut ... | 1970 | 17734449 |
| the inductors of differentiation of prefollicular tissue and the follicular epithelium in ovarioles of pyrrhocoris apterus (heteroptera). | 1968 | 5693888 | |
| [isolation and study of the mode of action of polygalacturonase of insects (pyrrhocoris apterus)]. | 1968 | 4967820 | |
| [paracrystalline endoplasmic reticulum in the ovary of pyrrhocoris apterus (heteroptera)]. | 1967 | 4385297 | |
| [on the fine structure of the scent glands of the fire bug (pyrrhocoris apterus l., geocorisae). the 2d larval abdominal gland]. | 1967 | 5599688 | |
| on steroids 103. molting deficiencies produced by some sterol derivatives in an insect (pyrrhocoris apterus l.). | 1966 | 5967065 | |
| growth disorders of the bug pyrrhocoris apterus and the 'juvenile hormone' effect of certain papers. | 1966 | 5914235 | |
| 'paper factor' as an inhibitor of the embryonic development of the european bug, pyrrhocoris apterus. | 1966 | 5954582 | |
| [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]. | 1966 | 5994736 | |
| [on the fine structure of the scent glands of firebugs (pyrrhocoris apterus l., geocorisae). i. on the functional morphology of the gland cell]. | 1966 | 5982714 | |
| 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. | 1966 | 5919750 |
| juvenile hormone activity for the bug pyrrhocoris apterus. | 1965 | 5217430 | |
| effect of hormones on growth and respiratory metabolism in the larvae of pyrrhocoris apterus l. (hemiptera). | 1965 | 14287217 | |
| [location of thermoreceptors in dorcus parallelepipedus l. and pyrrhocoris apterus l]. | 1951 | 14860171 |