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Влияние опреснения на рост, пульсации ценосарка и перемещение гидроплазмы у колониального гидроида Dynamena pumila (L., 1758)
Журнал общей биологии. 2018. Т. 79. № 5. С. 376-392.
Dementyev V., Марфенин Н. Н.
Keywords: Зоология беспозвоночных
Marfenin N., Dementyev V. S., Marine Biology Research 2017 Vol. 13 No. 5 P. 521-537
In many hydroids the movement of hydroplasm inside the colony is generated by the pulsation of coenosarc walls. We hypothesized that the stolon coenosarc is not only morphologically but also functionally non-homogeneous, and tested this hypothesis using time-lapse video microscopy to study rhythmic patterns – transverse pulsations, longitudinal pulsations and hydroplasmic flows – in the ...
Added: April 16, 2020
Marfenin N., Dementyev V. S., Biology Bulletin Reviews 2019 Vol. 9 No. 1 P. 42-51
It is established via time-lapse video microscopy that the zone of longitudinal extension of the stolon coenosarc in the colonial hydroid Dynamena pumila can extend over two interstitial sites (modules). The stretching occurs in the form of oscillations with a period corresponding to the growth pulsations of the stolon tip. Consequently, the growth zone is ...
Added: April 16, 2020
Marfenin N. N., Dementyev V., Biology Bulletin Reviews 2021 Vol. 11 No. 5 P. 498-519
Colonial hydroids are a true model of decentralized systems. Their self-regulation is best manifested in the functioning of the distribution system, and the goal of our research is to elucidate its patterns. The movement of fluid (hydroplasm) inside the gastrovascular cavity in the majority of the studied species of colonial hydroids occurs as a result ...
Added: October 14, 2021
Марфенин Н. Н., Dementyev V., Журнал общей биологии 2018 Т. 79 № 2 С. 97-107
Методом цейтраферной микровидеосъемки проведена регистрация пульсаций ценосарка столона у колониального гидроида Dynamena pumila (L., 1758) в проточной кювете и затем в непроточных условиях. Вода в проточной кювете обновлялась за 24 с. Продолжительность видеорегистрации каждого эпизода 2 ч. Сравнение проведено по одиннадцати параметрам: период и амплитуда ростовых пульсаций верхушки столона; прирост столона за час; период и ...
Added: April 16, 2020
Dementyev V. S., Marfenin N., Biology Bulletin Reviews 2019 Vol. 9 No. 5 P. 432-452
The dependence of the growth and functioning of the transport system of colonial organisms on water temperature has been studied. Time-lapse microvideo recording was used to measure the coenosarc pulsations of the stolon and shoot in the colonial hydroid Dynamena pumila (L., 1758) reared in seawater at 10, 15, 20, 25, and 28°C. As a ...
Added: April 16, 2020
Dementyev V., Марфенин Н. Н., Журнал общей биологии 2019 Т. 80 № 1 С. 22-42
Статья посвящена исследованию зависимости роста и функционирования распределительной системы колониальных организмов от температуры воды. Методом цейтраферной микровидеосъемки проведена регистрация латеральных (поперечных) и ростовых (продольных) пульсаций ценосарка столона и побега у колониального гидроида Dynamena pumila (L., 1758) в морской воде при температуре 10, 15, 20, 25, 28°С. В результате удалось установить, что метод микровидеосъемки пульсаций ценосарка ...
Added: April 16, 2020
Marfenin N., Dementyev V. S., Biology Bulletin Reviews 2019 Vol. 9 No. 1 P. 52-61
The coenosarc pulsations of the stolon and hydroplasmic flows (HFs) in the colonial hydroid Dynamena pumila (L., 1758) have been recorded in flow-through and nonflow, shallow cuvettes via time-lapse video microscopy. The water in the flow-through cuvette was refreshed during every 24 s. Each episode was video recorded for 2 h. Eleven indicators were used ...
Added: April 16, 2020
Dementyev V.S., Marfenin N. N., Invertebrate Zoology 2021 Vol. 18 No. 2 P. 69-79
The pulsation of the stolon coenosarc of the colonial hydroid Dynamena pumila (L., 1758) was recorded using time-lapse microvideo recording. The study included several experiments: control (without air exposure) and a series of consecutive air exposure periods: 5, 10, 20, 30 min and 1 h. In general, comparison of the experiments with same colony in ...
Added: October 14, 2021
Марфенин Н. Н., Dementyev V., Журнал общей биологии 2019 Т. 80 № 5 С. 348-363
Статья посвящена исследованию протяженности гидроплазматических течений (ГПТ) у колониального гидроида Dynamena pumila (L., 1758) и детализации ранее изложенных результатов. Использован метод визуального сканирования колоний под микроскопом и регистрации в каждом модуле столона направления течений и насыщенности их пищевыми частицами. В результате удалось установить, что неразрывное однонаправленное ГПТ может соответствовать по протяженности расстоянию от основания материнского ...
Added: April 16, 2020
Марфенин Н. Н., Dementyev V., Журнал общей биологии 2018 Т. 79 № 2 С. 85-96
Методом цейтраферной микровидеосъемки установлено, что у колониального гидроида Dynamena pumila зона продольного растяжения ценосарка столона может простираться на два междоузлия (модуля). Растяжение происходит колебательно с периодом, соответствующим ростовым пульсациям верхушки столона. Следовательно, зона роста не ограничена одним модулем столона, и основным условием продольного роста ценосарка является растяжение, создаваемое продвигающейся вперед верхушкой роста, а не только ...
Added: April 16, 2020
Marfenin N., Dementyev V. S., Biology Bulletin Reviews 2018 Vol. 8 No. 3 P. 212-226
Colonial hydroids are used as a natural model of a number of fundamental biological processes, including the self-organization of systems, which is most clearly expressed in the operation of the distribution system. Functional integration of the colonial organism is performed by the moving of intracavitary fluid (hydroplasm) along a tubular body represented by sprouts and ...
Added: April 16, 2020
Dementyev V., Марфенин Н. Н., Журнал общей биологии 2021 Т. 82 № 5 С. 323-336
Колониальные гидроиды – пример децентрализованных организмов модульного типа. В них нет органов централизованной регуляции. Распределительная система функционирует за счет множества равнозначных пульсаторов, соединенных трубчатым ценосарком. В результате неуправляемого взаимодействия пульсаторов возникают протяженные течения гидроплазмы (ГПТ) в общей полости колонии. Регулярность и протяженность ГПТ могут быть показателями эффективности децентрализованной организации. Колониальных гидроидов можно рассматривать как удобную ...
Added: October 14, 2021
Dementyev V. S., Marfenin N., Biology Bulletin Reviews 2019 Vol. 9 No. 3 P. 250-266
The article describes the assessment of the primary (i.e., occurring before the onset of adaptation) reaction of coenosarc pulsations in the colonial hydroid Dynamena pumila (L., 1758) to decreased salinity and the associated changes in the growth and functioning of the distribution system. Time-lapse video microscopy has been used to register coenosarc pulsations of D. ...
Added: April 16, 2020
Safonov G., Кокотов Б., Тонков Н. et al., Нефть России 2005 № 5 С. 36-42
Как отразится на системе природопользования принятие Экологического кодекса и введение экологических платежей? Ситуцию анализируют специалисты по охране окружающей среды. ...
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Shaitan A., Комарова Г. А., Timokhin G. et al., Russian Journal of Genetics 2024 Vol. 60 No. 1 P. 11-31
The COVID-19 pandemic has become a serious challenge for the healthcare system and the econ- omy of many states, and understanding the molecular mechanisms of the pathogenesis of this disease has become a significant challenge for modern science. At the same time, for the first time, a number of high- precision and high-throughput methods for ...
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Jaaskelainen I., Klucharev V., Panidi K. et al., Frontiers in Human Neuroscience 2020 Vol. 14 P. 253
Narratives, in the form of, e.g., written stories, mouth-to-mouth accounts, audiobooks, fiction movies, and media-feeds, powerfully shape the perception of reality and widely influence human decision-making. In this review, we describe findings from recent neuroimaging studies unraveling how narratives influence the human brain, thus shaping perception, cognition, emotions, and decision-making. It appears that narrative sense-making ...
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Sergeyev V., Гришуткина Д., Логистика и управление цепями поставок 2007 № 3 С. 10-28
It is shown, that recently among technologies of integration of contractors at supply chains «Vendor managed inventory» concept has been growing in popularity (VMI). Basic definitions within the framework of this concept/technology are analysed. VMI technology is viewed within the confines of development of logistics and supply chain management, and are estimated those benefits, which ...
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Oxford : Wiley, 2019
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Knyazev E., Khristichenko A., Maltseva D. et al., Placenta 2019 Vol. 83 P. e59-e60
Objectives: The study of the transport and toxicity of xenobiotics in women is limited for ethical reasons. Ex vivo placenta models have high variability and low success rates. Animal models in vivo differ from a human in anatomy, genotype, and proteome. The placenta-on-a-chip model is a compromise. We studied the components of the FAC chemotherapy regimen for breast cancer in ...
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Shestakova A., Rieskamp J., Tugin S. et al., Social Cognitive and Affective Neuroscience 2013 Vol. 8 No. 7 P. 756-763
Humans often change their beliefs or behavior due to the behavior or opinions of others. This study explored, with the use of human event-related potentials (ERPs), whether social conformity is based on a general performance-monitoring mechanism. We tested the hypothesis that conflicts with a normative group opinion evoke a feedback-related negativity (FRN) often associated with ...
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М. : Издательство "Перо", 2022
В сборнике представлены материалы 6-й Международной научно-практической конференции «Социально-психологическая адаптация мигрантов в современном мире», прошедшей 25-26 марта 2022 на базе Пензенского государственного университета. ...
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Nicol R., Chapman S., Vertes P. et al., Journal of Neurophysiology (США) 2012 Vol. 107 No. 5 P. 1421-1430
How do human brain networks react to dynamic changes in the sensory environment? We measured rapid changes in brain network organization in response to brief, discrete, salient auditory stimuli. We estimated network topology and distance parameters in the immediate central response period, <1 s following auditory presentation of standard tones interspersed with occasional deviant tones ...
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Background: Recent evidence suggests that stroke is increasing as a cause of morbidity and mortality in younger adults, where it carries particular significance for working individuals. Accurate and up-to-date estimates of stroke burden are important for planning stroke prevention and management in younger adults. Objectives: This study aims to estimate prevalence, mortality and disability-adjusted life ...
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