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Доклады Российской академии наук. Науки о жизни最新文献

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New type of gland discovered in cestodes: neurosecretory neurons release a secret into the fish host 在绦虫中发现新型腺体：神经分泌神经元向鱼类宿主释放秘密
Доклады Российской академии наук. Науки о жизни Pub Date : 2024-07-05 DOI: 10.31857/s2686738924010039
N. Biserova, I. Kutyrev, V. V. Malakhov
{"title":"New type of gland discovered in cestodes: neurosecretory neurons release a secret into the fish host","authors":"N. Biserova, I. Kutyrev, V. V. Malakhov","doi":"10.31857/s2686738924010039","DOIUrl":"https://doi.org/10.31857/s2686738924010039","url":null,"abstract":"In 5 species of cestode plerocercoids parasitizing fish, free endings of peripheral neurosecretory neurons were found in the tegument in the ultrastructural study. These free terminals secreted vesicles on the tegument surface and into the host body. An increase in secretion under the influence of the blood serum of a fish host has been experimentally shown. In the body of cestodes, neurosecretory neurons (NN) form paracrine-type contacts near the cell membranes of the frontal glands, tegument, and muscles, performing the function of endocrine glands. Simultaneously, NN function as exocrine glands and secrete so-called manipulative factors that influence the physiology of the host.","PeriodicalId":214974,"journal":{"name":"Доклады Российской академии наук. Науки о жизни","volume":" 46","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141675325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anatomy of digestive system and feeding mechanism of Quatuoralisia malakhovi (Hemichordata, Torquaratoridae) Quatuoralisia malakhovi（半知动物纲，鱼鳖目）的消化系统解剖和摄食机制
Доклады Российской академии наук. Науки о жизни Pub Date : 2024-07-05 DOI: 10.31857/s2686738924010042
V. V. Malakhov, A. I. Lukinykh, O. Ezhova
{"title":"Anatomy of digestive system and feeding mechanism of Quatuoralisia malakhovi (Hemichordata, Torquaratoridae)","authors":"V. V. Malakhov, A. I. Lukinykh, O. Ezhova","doi":"10.31857/s2686738924010042","DOIUrl":"https://doi.org/10.31857/s2686738924010042","url":null,"abstract":"An anatomical study of the digestive system of the deep-sea enteropneust Quatuoralisia malakhovi was carried out. It is shown that the lateral collar lips are twisted in such a way that they form a ciliary groove leading to an internal channel through which the collected detritus particles are transferred to the peripheral pharyngeal channels. The size of the selected particles ranges from 1–6 μm to 100–200 μm, which corresponds to feeding on the remains of planktonic diatoms. The importance of the faecal cord as an anchor holding the heavily watered jelly-like body of Torquaratoridae at the sea floor during feeding is noted.","PeriodicalId":214974,"journal":{"name":"Доклады Российской академии наук. Науки о жизни","volume":" 31","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141675211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Content of 13С and 15N isotopes in collagen of bones of the small cave bear (Mammalia, Carnivora, Ursidae, Ursus (Spelaearctos) rossicus Borissiak, 1930) of Western Siberia 西西伯利亚小洞熊（哺乳纲，食肉目，熊科，Ursus (Spelaearctos) rossicus Borissiak，1930 年）骨骼胶原蛋白中 13С 和 15N 同位素的含量
Доклады Российской академии наук. Науки о жизни Pub Date : 2024-07-05 DOI: 10.31857/s2686738924010179
P. Kosintsev
{"title":"Content of 13С and 15N isotopes in collagen of bones of the small cave bear (Mammalia, Carnivora, Ursidae, Ursus (Spelaearctos) rossicus Borissiak, 1930) of Western Siberia","authors":"P. Kosintsev","doi":"10.31857/s2686738924010179","DOIUrl":"https://doi.org/10.31857/s2686738924010179","url":null,"abstract":"An analysis of data on the content of 13C and 15N isotopes in the collagen of the bones of the small cave bear (Ursus (S.) rossicus Borissiak, 1930) from three regions of Western Siberia was carried out. The bones are dated to Marine Isotope Stage (MIS) 3. The bones of mature males and females were studied. Differences between some samples appear only in the δ15N values. Bears from all samples belong to the same trophic level. Trophic shifts have been established between females and males in one area and between males in two areas. The small cave bear of Western Siberia differed from the small cave bear of the Southern Urals in a much more predatory way of life. The level of differences between the bears of the Urals and Siberia corresponds to different trophic levels.","PeriodicalId":214974,"journal":{"name":"Доклады Российской академии наук. Науки о жизни","volume":" 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141677185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metaboliс enzymes activity in smolts and parrs of Atlantic salmon (Salmo Salar L) grown under different light regimes 在不同光照条件下生长的大西洋鲑鱼（Salmo Salar L）幼鱼和幼鱼体内的代谢酶活性
Доклады Российской академии наук. Науки о жизни Pub Date : 2024-07-05 DOI: 10.31857/s2686738924010145
M. V. Kuznetsova, M. A. Rodin, N. Shulgina, M. Krupnova, A. E. Kuritsin, S. A. Murzina, Нина Николаевна Немова
{"title":"Metaboliс enzymes activity in smolts and parrs of Atlantic salmon (Salmo Salar L) grown under different light regimes","authors":"M. V. Kuznetsova, M. A. Rodin, N. Shulgina, M. Krupnova, A. E. Kuritsin, S. A. Murzina, Нина Николаевна Немова","doi":"10.31857/s2686738924010145","DOIUrl":"https://doi.org/10.31857/s2686738924010145","url":null,"abstract":"The activities of enzymes of energy and carbohydrate metabolism in the muscles and liver of smolts and pestlets of Atlantic salmon (Salmo Salar L), which were grown in the autumn period under the influence of two photoperiod modes (constant and natural) in combination with a different feeding regime and subsequent maintenance during the winter short photoperiod, were investigated. The dependence in the activity level of the studied enzymes was established both with the membership of the juvenile salmon to the experimental group, and between the parr and smolts selected at the end of the winter short photoperiod. The smolts, grown under conditions of constant lighting and round-the-clock feeding, differed from other groups by higher values of cytochrome c oxidase (COX) activity and low values of aldolase in muscles. The differences between parr and smolts in aerobic metabolism in muscles were found to be the same for all experimental groups, namely: relatively high activity of COX and aldolase in smolts. The pattern of changes in the activity of the studied enzymes in the liver of parrs and smolts differed in individuals from different experimental groups. The results of the study of the activity of energy metabolism enzymes in salmon juveniles grown under different photoperiod conditions suggest that the intensity and direction of the pathways of energy metabolism and glucose oxidation depend on the light regime used, which, cosequently, may affect the completeness of the smoltification process of the studied fish.","PeriodicalId":214974,"journal":{"name":"Доклады Российской академии наук. Науки о жизни","volume":" 38","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141673275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of the role of long non-coding RNA ROX in maintaining of the dosage compensation complex in Drosophila melanogaster 研究长非编码 RNA ROX 在维持黑腹果蝇剂量补偿复合体中的作用
Доклады Российской академии наук. Науки о жизни Pub Date : 2024-07-05 DOI: 10.31857/s2686738924010109
V. Babosha, P. G. Georgiev, O. G. Maksimenko
{"title":"Study of the role of long non-coding RNA ROX in maintaining of the dosage compensation complex in Drosophila melanogaster","authors":"V. Babosha, P. G. Georgiev, O. G. Maksimenko","doi":"10.31857/s2686738924010109","DOIUrl":"https://doi.org/10.31857/s2686738924010109","url":null,"abstract":"The proteins MSL1, MSL2, MSL3, MLE, MOF and non-coding RNAs roX1 and roX2 form the Drosophila dosage compensation complex (DCC), which specifically binds to the X chromosome of males. It is known that non-coding RNA roX are primary component of the DCC in the process of assembly and spreading of the complex among the X chromosome of males. However, it still remains unclear the role of this RNA in maintaining the structure of the already assembled complex. In this work, we have shown that the full-assembled complex of dosage compensation dissociates rather weakly when treated with RNases: the MLE helicase is effectively released from the complex, and the remaining protein components, MSL1, MSL2 and MSL3, undergo partial disassembly and continue to be part of subcomplexes. The results confirm the importance of the non-coding RNA roX2 not only in the processes of initiation of CDK assembly, but also at the stage of maintaining the structure of the already assembled complex.","PeriodicalId":214974,"journal":{"name":"Доклады Российской академии наук. Науки о жизни","volume":" 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141674231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nutrition of the small cave bear (Mammalia, Carnivora, Ursidae, Ursus (Spelaearctos) rossicus Borissak, 1930) in the Urals according to the results of the analysis of 13С and 15N isotopes in bone collagen 根据骨胶原中 13С 和 15N 同位素的分析结果得出的乌拉尔地区小洞熊（哺乳纲，食肉目，熊科，Ursus (Spelaearctos) rossicus Borissak, 1930 年）的营养状况
Доклады Российской академии наук. Науки о жизни Pub Date : 2024-07-05 DOI: 10.31857/s2686738924010059
П. А. Косинцев, K. Y. Konovalova, G. V. Simonova
{"title":"Nutrition of the small cave bear (Mammalia, Carnivora, Ursidae, Ursus (Spelaearctos) rossicus Borissak, 1930) in the Urals according to the results of the analysis of 13С and 15N isotopes in bone collagen","authors":"П. А. Косинцев, K. Y. Konovalova, G. V. Simonova","doi":"10.31857/s2686738924010059","DOIUrl":"https://doi.org/10.31857/s2686738924010059","url":null,"abstract":"An analysis of data on the content of 13C and 15N isotopes in the collagen of the bones of the small cave bear (Ursus (S.) rossicus Borissak, 1930) from localities in the Middle and Southern Urals was carried out. The bones date from the Interglacial (MIS 5) and Glacial (MIS 3) periods. The bones of males and females aged 3 years, 4 years and older than 4 years were studied. Sexual, geographical and chronological differences in the content of 13C and 15N isotopes were studied. Notable gender, geographic, and chronological differences between samples are shown. In the Middle Urals, during the interglacial period, females led a more predatory lifestyle than males, and during the transition to the glacial period, the trophic niches of males and females converged due to an increase in herbivory. During the interglacial period in the Southern Urals, males led a more predatory lifestyle than in the Middle Urals. In the Southern Urals, during this transition, the scale of changes in δ13C and δ15N values corresponds to the scale of differences between trophic levels.","PeriodicalId":214974,"journal":{"name":"Доклады Российской академии наук. Науки о жизни","volume":" 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141674046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effect of salinity on reproduction and fatty acidsprofile of the diatom microalgae Nitzschia сf. thermaloides 盐度对硅藻微藻类 Nitzschia сf. thermaloides 的繁殖和脂肪酸谱的影响
Доклады Российской академии наук. Науки о жизни Pub Date : 2024-07-05 DOI: 10.31857/s2686738924010029
N. S. Repkina, V. P. Voronin, O. Davidovich, N. A. Davidovich, S. A. Murzina
{"title":"The effect of salinity on reproduction and fatty acidsprofile of the diatom microalgae Nitzschia сf. thermaloides","authors":"N. S. Repkina, V. P. Voronin, O. Davidovich, N. A. Davidovich, S. A. Murzina","doi":"10.31857/s2686738924010029","DOIUrl":"https://doi.org/10.31857/s2686738924010029","url":null,"abstract":"The Nitzschia cf. thermaloides was found in reservoirs of mud volcanoes in eastern Crimea. It was determined that this species has wide spectrum of halotolerance; in particular, it is capable of vegetative reproduction within the range of 0–110 ‰ salinity of the substrate. For the first time, the effect of salinity on the fatty acid composition of the microalga Nitzschia cf. thermaloides was studied. Regardless of salinity, the quantitative and qualitative content of fatty acids did not change, which indicates the ability to maintain a stable compacted membrane structure, which probably partly determines the adaptation of this species to salinity. The composition of fatty acids is mainly represented by saturated fatty acids, which allows us to consider this species as a potentially “useful” object for biotechnology as a source of saturated fatty acids or an alternative raw material for biofuel.","PeriodicalId":214974,"journal":{"name":"Доклады Российской академии наук. Науки о жизни","volume":" 37","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141675373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
АНКСИОЛИТИЧЕСКОЕ ДЕЙСТВИЕ ПЕПТИДОВ МОРСКОЙ АНЕМОНЫ HETERACTIS CRISPA, МОДУЛЯТОРОВ TRPV1 И ASIC КАНАЛОВ 分析实践PETIDOV Morskoy anemon Heteractis CRISPA， modulyatorv TRPV1和ASIC Kanalov
Доклады Российской академии наук. Науки о жизни Pub Date : 2022-07-01 DOI: 10.31857/s268673892204014x
{"title":"АНКСИОЛИТИЧЕСКОЕ ДЕЙСТВИЕ ПЕПТИДОВ МОРСКОЙ АНЕМОНЫ HETERACTIS CRISPA, МОДУЛЯТОРОВ TRPV1 И ASIC КАНАЛОВ","authors":"","doi":"10.31857/s268673892204014x","DOIUrl":"https://doi.org/10.31857/s268673892204014x","url":null,"abstract":"","PeriodicalId":214974,"journal":{"name":"Доклады Российской академии наук. Науки о жизни","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147905624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ОСОБЕННОСТИ ЦИКЛА СОН–БОДРСТВОВАНИЕ И ЦИРКАДНОЙ АКТИВНОСТИ МАЛОГО ОЛЕНЬКА ( Tragulus kanchil )
Доклады Российской академии наук. Науки о жизни Pub Date : 1900-01-01 DOI: 10.31857/s2686738921050218
О. И. Лямин, Д. М. Сигал, Р. В. Евсигнеев, Е. А. Назаренко, В. В. Рожнов
{"title":"ОСОБЕННОСТИ ЦИКЛА СОН–БОДРСТВОВАНИЕ И ЦИРКАДНОЙ АКТИВНОСТИ МАЛОГО ОЛЕНЬКА (\u0000 \u0000 Tragulus kanchil\u0000 \u0000 )","authors":"О. И. Лямин, Д. М. Сигал, Р. В. Евсигнеев, Е. А. Назаренко, В. В. Рожнов","doi":"10.31857/s2686738921050218","DOIUrl":"https://doi.org/10.31857/s2686738921050218","url":null,"abstract":"","PeriodicalId":214974,"journal":{"name":"Доклады Российской академии наук. Науки о жизни","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127221347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
СРАВНЕНИЕ ЭФФЕКТОВ МОДЕЛИРОВАНИЯ СЕПТОПЛАСТИКИ И СИНУС-ЛИФТИНГА У КРЫС НА ИЗМЕНЕНИЕ ВАРИАБЕЛЬНОСТИ СЕРДЕЧНОГО РИТМА 比较鼻中隔成形术和老鼠鼻窦电梯模拟的效果，以改变心脏的变化。
Доклады Российской академии наук. Науки о жизни Pub Date : 1900-01-01 DOI: 10.31857/s2686738921030045
А.Е. Северин, Л.Т. Сушкова, Т.Е. Батоцыренова, В. И. Торшин, Ю. П. Старшинов, В. В. Розанов, О.М. Зубова
{"title":"СРАВНЕНИЕ ЭФФЕКТОВ МОДЕЛИРОВАНИЯ СЕПТОПЛАСТИКИ И СИНУС-ЛИФТИНГА У КРЫС НА ИЗМЕНЕНИЕ ВАРИАБЕЛЬНОСТИ СЕРДЕЧНОГО РИТМА","authors":"А.Е. Северин, Л.Т. Сушкова, Т.Е. Батоцыренова, В. И. Торшин, Ю. П. Старшинов, В. В. Розанов, О.М. Зубова","doi":"10.31857/s2686738921030045","DOIUrl":"https://doi.org/10.31857/s2686738921030045","url":null,"abstract":"","PeriodicalId":214974,"journal":{"name":"Доклады Российской академии наук. Науки о жизни","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122326243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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