Results 141 to 150 of about 811 (172)
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Cytophotometry of DNA and histone in meiosis of Pyrrhocoris apterus
Experimental Cell Research, 1970Abstract Using double wavelength cytophotometry, the amount of DNA (Feulgen reaction) and histone (staining with fast-green at pH 8.1–8.2) in the cell nuclei of the bug Pyrrhocoris apterus were estimated at the early stages of spermatogenesis. The evidences obtained that the DNA amount per nucleus is doubled in the premeiotic interphase, while the ...
E N, Antropova, Y F, Bogdanov
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Minicircle kinetoplast genome of insect trypanosomatid Leptomonas pyrrhocoris
Biochemistry (Moscow), 2017We present here the structure of a minicircle population based on transcriptome sequencing of Leptomonas pyrrhocoris. We show that minicircle DNA molecules are dimeric. As in dixenous species, the entire molecule of minicircle DNA is transcribed. This is the first minicircle transcriptome of monoxenous trypanosomatid species determined using NGS ...
E S, Gerasimov +4 more
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The pattern of pteridine accumulation in eggs of Pyrrhocoris apterus
Journal of Insect Physiology, 1969Abstract The pteridines occurring in the eggs of the bug Pyrrhocoris apterus are erythropterin, isoxanthopterin, violapterin, chrysopterin, and a new compound which appears to be a 6-substituted derivative of violapterin. The changing content of all of these compounds with development has been determined.
R.Lane Smith, H.S. Forrest
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Personality and ectoparasitic mites (Hemipteroseius adleri) in firebugs (Pyrrhocoris apterus)
Behavioural Processes, 2016Individuals of the same species often consistently differ in their behaviour across time and context. These stable differences are usually termed 'animal personality'. Parasitism is known to significantly influence the evolution of animal personality at least in part because more explorative individuals may meet parasites more frequently than less ...
Gyuris, Enikő +3 more
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Function of the neuroendocrine complex in diapausing Pyrrhocoris apterus females
Journal of Insect Physiology, 1977Abstract The role of the brain in inhibiting the action of corpora allata in diapausing short-day females was investigated by transplantation experiments. The function of the transplanted glands was evaluated by oviposition. Active glands from long-day females remained active for a long period of time after transplantation into short-day females ...
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Effect of thermoperiod on diapause intensity in Pyrrhocoris apterus (Heteroptera Pyrrhocoridae)
Journal of Insect Physiology, 2001The intensity of adult diapause in Pyrrhocoris apterus was measured in two series of experiments as the duration of pre-oviposition period at a constant temperature of 25 degrees C after transfer from short (12L:12D) to long day conditions (18L:6D). Higher diapause intensity was induced with a thermoperiod than at constant temperatures.
, Kalushkov +3 more
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Nervous inhibition of corpora allata by photoperiod in Pyrrhocoris apterus
Nature, 1976PHOTOPERIOD governs reproduction in many insect species with adult diapause. The nervous and neuroendocrine systems mediate the impact of the environment on ovarian functions. It has been suggested that the daylengths promoting diapause prevent secretion of the activation hormone (most probably a complex of neurohormones) from the pars intercerebralis (
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Personality traits across ontogeny in firebugs, Pyrrhocoris apterus
Animal Behaviour, 2012Consistent behavioural differences have long been recognized in animals but it still remains unclear how these traits change over ontogeny. As individuals can face different situations over their lives, and their life history expectation may not be the same in different life stages, one can expect that using different strategies in different life ...
Enikő Gyuris +2 more
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Insect hormones and insect control. Or, sex and the single Pyrrhocoris Apterus
Journal of Chemical Education, 1971The author summarizes some of the highlights of recent developments in the chemistry of insect control.
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Tremulation of firebags Pyrrhocoris apterus L. (Heteroptera, Pyrrhocoridae)
Moscow University Biological Sciences Bulletin, 2007Tremulatory signals of firebugs Pyrrhocoris apterus L. are described. The oscillogram of the tremulatory signals is given.
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