Biology Bulletin最新文献

Non-Coding RNAs Involved in the Regulation of Signaling Pathways as Possible Markers of Non-Alcoholic Fatty Liver Disease Progression 参与信号通路调控的非编码 RNA 可能是非酒精性脂肪肝进展的标志物

IF 0.5 4区生物学

Biology Bulletin Pub Date : 2024-09-10 DOI: 10.1134/s1062359024607742

L. V. Topchieva, I. V. Kurbatova, O. P. Dudanova, A. V. Vasilyeva, G. A. Zhulay

引用次数: 0

Impact of Biotic and Abiotic Factors on Epibiotic Communities of the Barents Sea Red King Crab 生物和非生物因素对巴伦支海红帝王蟹表生群落的影响

IF 0.5 4区生物学

Biology Bulletin Pub Date : 2024-09-10 DOI: 10.1134/s1062359024607638

A. G. Dvoretsky, V. G. Dvoretsky

引用次数: 0

Site Preference of the Myxosporean Genus Kudoa Meglitsch, 1947, in the World Fauna Fish at Certain Depths Kudoa Meglitsch，1947 年，世界鱼类动物区系鱼类在特定深度的地点偏好

IF 0.5 4区生物学

Biology Bulletin Pub Date : 2024-09-10 DOI: 10.1134/s1062359023606651

V. M. Yurakhno

引用次数: 0

The Presence and Microstructure of Down Components of Feathers in Nineteen Orders of Birds (Aves) 十九类鸟类羽毛中羽绒成分的存在和微观结构

IF 0.5 4区生物学

Biology Bulletin Pub Date : 2024-09-10 DOI: 10.1134/s1062359024608590

O. L. Silaeva, S. A. Bukreev, R. M. Khatsaeva

{"title":"The Presence and Microstructure of Down Components of Feathers in Nineteen Orders of Birds (Aves)","authors":"O. L. Silaeva, S. A. Bukreev, R. M. Khatsaeva","doi":"10.1134/s1062359024608590","DOIUrl":"https://doi.org/10.1134/s1062359024608590","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>We used light and raster electron microscopy to study for the first time in research the microstructure of the down parts of feather vanes consisting of combined barbules (“barbule I”) provided with both typical plumulaceous barbules (“barbicel,” “barbule II”) and modified plumulaceous barbules (MBs). Their presence and distribution over different pterylae were studied on 3330 feathers from 441 birds of 129 species belonging to 45 families of 19 orders. Information about the presence of afterfeathers and of umbilical barbs on feathers was clarified. Modified plumulaceous barbules were found on feathers of all species studied, more often on coverts, less often on wing and tail feathers. Down components were studied in most detail in the orders Charadriiformes and Passeriformes; in the former, the presence or absence of MB was specific at the level of family or genus, while in the latter, afterfeathers or umbilical barbs were never found together on the same feather. The possibility is discussed of using various combinations of down components and features of their microstructure as an important addition to the integrated system of ptilological taxa identification by feathers (including single feathers) and in some cases even by the pteryla to which the tested feather belongs.</p>","PeriodicalId":55366,"journal":{"name":"Biology Bulletin","volume":"2023 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First Information on the Ultrathin Structure of the Tegument of the “Cystacanth” in Acanthocephala Neoechinorhynchus beringianus Mikhailova et Atrashkevich, 2008 (Eoacanthocephala, Neoechinorynchidae) Acanthocephala Neoechinorhynchus beringianus Mikhailova et Atrashkevich, 2008 (Eoacanthocephala, Neoechinorynchidae)中 "囊棘鱼 "超薄表皮结构的第一手资料

IF 0.5 4区生物学

Biology Bulletin Pub Date : 2024-09-10 DOI: 10.1134/s1062359024607614

K. V. Kusenko, V. P. Nikishin

引用次数: 0

Automated Identification and Counting of Saigas (Saiga tatarica) by Using Deep Convolutional Neural Networks in High-Resolution Satellite Images 在高分辨率卫星图像中使用深度卷积神经网络自动识别和计算 "斋加"（Saiga tatarica）数量

IF 0.5 4区生物学

Biology Bulletin Pub Date : 2024-09-10 DOI: 10.1134/s1062359024608784

V. V. Rozhnov, A. L. Salman, A. A. Yachmennikova, A. A. Lushchekina, P. A. Salman

{"title":"Automated Identification and Counting of Saigas (Saiga tatarica) by Using Deep Convolutional Neural Networks in High-Resolution Satellite Images","authors":"V. V. Rozhnov, A. L. Salman, A. A. Yachmennikova, A. A. Lushchekina, P. A. Salman","doi":"10.1134/s1062359024608784","DOIUrl":"https://doi.org/10.1134/s1062359024608784","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>We utilized a two-phase analysis using deep convolutional neural networks (DCNN) to create an automated technology that enabled us to detect and count saigas (<i>Saiga tatarica</i>) in satellite images with a resolution of 0.3–0.5 m/pixel (Eros-B 2012; 2013 and Beijing KA 2022 satellites). In the first phase, the satellite image is automatically divided into sections and checked for the presence or absence of clusters of objects (the “classification” phase). Then, during the second phase, only the fragments of the satellite image where at least one saiga was previously found are analyzed (the “detection” phase). The method was calibrated by training a neural network on the results of the preliminary processing of archival satellite images from 2012 and 2013, carried out manually by zoological experts. When we tested the DCNN work with a “confidence threshold” of 0.3, we identified 1284 saigas on the entire model satellite image, while a zoological expert manually identified 1412 saigas. For practical use and to assess the effectiveness of this method, we counted saigas on a 2022 image covering two adjacent specially protected natural areas (PAs) located in the Republic of Kalmykia and the Astrakhan region (Russian Federation). The results are presented with different “thresholds of confidence.”</p>","PeriodicalId":55366,"journal":{"name":"Biology Bulletin","volume":"28 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142188022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Leukocyte Composition of the Organs of the Immune System of Coregonus migratorius Infected with Dibothriocephalus dendriticus 洄游鱼感染树枝状二棘鲷后免疫系统器官的白细胞组成

IF 0.5 4区生物学

Biology Bulletin Pub Date : 2024-09-10 DOI: 10.1134/s1062359024607432

O. E. Mazur, I. A. Kutyrev, L. V. Tolochko

引用次数: 0

Heavy Metal-Resistant PGPR Strains of Pseudomonas sp. Stimulating the Growth of Alfalfa under Cadmium Stress 在镉胁迫下促进紫花苜蓿生长的抗重金属假单胞菌 PGPR 菌株

IF 0.5 4区生物学

Biology Bulletin Pub Date : 2024-09-10 DOI: 10.1134/s1062359024607444

O. V. Chubukova, L. R. Khakimova, R. T. Matnyazov, Z. R. Vershinina

{"title":"Heavy Metal-Resistant PGPR Strains of Pseudomonas sp. Stimulating the Growth of Alfalfa under Cadmium Stress","authors":"O. V. Chubukova, L. R. Khakimova, R. T. Matnyazov, Z. R. Vershinina","doi":"10.1134/s1062359024607444","DOIUrl":"https://doi.org/10.1134/s1062359024607444","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Three bacteria strains of <i>Pseudomonas</i> sp. resistant to heavy metals were isolated from chemically contaminated soil. An analysis of the nucleotide sequences of the 16S rRNA and <i>rpoD</i> genes identified the <i>Pseudomonas</i> sp. 17 НМ strain as <i>Pseudomonas capeferrum,</i> and the strains of <i>Pseudomonas</i> sp. 65 НМ and 67 НМ were most closely related to the type strains of <i>Pseudomonas silesiensis</i> and <i>Pseudomonas umsongensis</i>, respectively. It was shown that the strains of <i>Pseudomonas</i> sp. 17 НМ, 65 НМ, and 67 НМ were characterized by different levels of resistance to heavy metals, with the maximum tolerable concentration (MTC) of zinc being 1 mМ for all strains, that of cadmium, 1, 1.5, and 1 mМ; of lead, 5, 5, and 4 mМ; and of nickel, 7, 9, and 7 mМ, respectively. All <i>Pseudomonas</i> strains can form biofilms and have the properties of PGPR bacteria. Treatment of alfalfa seeds (<i>Medicago sativa</i> L.) with the strains of <i>Pseudomonas</i> sp. 17 НМ, 65 НМ, and 67 НМ under cadmium stress increased the dry weight of alfalfa seedlings up to 40% and the content of chlorophyll <i>a</i> and <i>b</i> in the leaves by 25–33% relative to the control.</p>","PeriodicalId":55366,"journal":{"name":"Biology Bulletin","volume":"59 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics of Food Passing through the Digestive Tract in the Nocturnal Rodent Meriones crassus as a Response to the Rhythm of Feeding Activity 夜间啮齿类动物 Meriones crassus 消化道中食物通过的动态变化是对进食活动节律的反应

IF 0.5 4区生物学

Biology Bulletin Pub Date : 2024-09-10 DOI: 10.1134/s1062359024608206

E. I. Naumova, G. K. Zharova, T. Yu. Chistova

{"title":"Dynamics of Food Passing through the Digestive Tract in the Nocturnal Rodent Meriones crassus as a Response to the Rhythm of Feeding Activity","authors":"E. I. Naumova, G. K. Zharova, T. Yu. Chistova","doi":"10.1134/s1062359024608206","DOIUrl":"https://doi.org/10.1134/s1062359024608206","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The dependence of the food passing through the digestive tract (DT) on feeding activity in the nocturnal rodent <i>Meriones crassus</i> was studied. Two groups of gerbils were housed in the laboratory under artificial lighting at a photoperiod of 12 : 12 L : D for 36 h. The groups were named “day” (L : D = 20 : 16) and “night” (L : D = 12 : 24) according to the predominance light or dark time during the experiment. The mean retention time of markers in the stomach in these groups was 20 and 30 h, respectively. The kinetics of the contents changed depending on the specific time of consumption of the markers and the saturation level of the rodents with food. During the daylight hours, sequential evacuation of markers entering the DT begins from the stomach after two hours, and at night, during a period of higher feeding activity, part of the food located in the fornix of the stomach and in the cecum stays here for a longer time. In the “day” group, by the end of the experiment, 84% of the markers were removed from the DT, and in the “night” group, about 55%.</p>","PeriodicalId":55366,"journal":{"name":"Biology Bulletin","volume":"8 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142188025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Content of Endogenous Hormones in Explants and Calluses of Lavandula angustifolia Mill. at the Initial Stages of an In Vitro Culture 试管培养初期薰衣草外植体和胼胝体中内源性激素的含量

IF 0.5 4区生物学

Biology Bulletin Pub Date : 2024-09-10 DOI: 10.1134/s1062359024607924

N. N. Kruglova, I. R. Galin, N. A. Yegorova

{"title":"The Content of Endogenous Hormones in Explants and Calluses of Lavandula angustifolia Mill. at the Initial Stages of an In Vitro Culture","authors":"N. N. Kruglova, I. R. Galin, N. A. Yegorova","doi":"10.1134/s1062359024607924","DOIUrl":"https://doi.org/10.1134/s1062359024607924","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The content of endogenous hormones (auxin IAA, cytokinines, ABA) in explants of various types (segments of the leaf, bud, and stem), primary calluses induced from them, and morphogenic and nonmorphogenic calluses at the initial stages of in vitro culture by the immunoassay method was studied for the first time for <i>Lavandula angustifolia</i> Mill. The maximum value of the hormone levels in explants such as segments of a bud was shown. An increase in the content of hormones in primary calluses was revealed in comparison with similar characteristics in all types of explants. The higher level of the active form of cytokinin (<i>trans</i>-zeatin) and ABA, as well as the lower level of the inactive form of cytokinin (zeatin-nucleotide) and auxin IAA, were identified in the morphogenic callus compared with the nonmorphogenic one. It is suggested that the content of endogenous hormones in explants and calluses of <i>L. angustifolia</i> is due to their histological status. A conclusion is made about the unified histophysiological mechanisms of callusogenesis and morphogenesis in vitro in the studied plant.</p>","PeriodicalId":55366,"journal":{"name":"Biology Bulletin","volume":"9 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0