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Weak influence of natural vegetation in urban green spaces compared to agricultural ecosystems on House Martin populations:Insights from nationwide citizen science data in the Czech Republic

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Avian Research 2024年第2期15卷 139-146页

作者： Denisa Dvorakova Jan Sipos Josef Suchomel department of Zoology FisheriesHydrobiology and ApicultureMendel University in BrnoZemedelska 161300BrnoCzech Republic

The House Martin(Delichon urbicum)is a common farmland bird species in the European landscape,yet its population numbers are currently in decline.However,it is not yet sufficiently explained why this long-term decline occurs.To fill this gap in our knowledge,we investigated how land cover composition affects the abundance of House Martins on the landscape scale by using nationwide citizen science data.Utilizing a generalised linear mixed-effect model(GLMM),we evaluated 12,094 records from the Czech Republic spanning 2009-2017.Our analysis underscores the significance of land cover type in shaping House Martin abundance.More specifically,our results indicate that within agricultural land covers“naturally managed arable lands”exhibited significant positive effect,while forests,orchards,and vineyards were deemed less favourable for House Martin populations.Within urban land covers,we found a clear distinction in the impact on House Martin populations,with a positive effect observed in urban infrastructure,development areas,and post-industrial sites(i.e.,UrbanAreas),while an indifferent impact was noted within urban green spaces and landscaped areas(i.e.,GreenUrban).Notably,our findings suggest that the simple spatial,age,and species structure typical of forests in Europe,and similarly,the uniform structure of parks and gardens,may be responsible for the decline in the abundance of the House Martin.We advocate for the preservation or enhancement of urban greenery,expansion of natural vegetation in rural areas and adoption of ecological management practices in orchards and vineyards to mitigate further declines in House Martin populations.

关键词： Citizen science Habitat preferences House Martin Species distribution Urban and suburban landscape

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Mucosal immune responses to Ichthyophthirius multifiliis in the ocular mucosa of rainbow trout(Oncorhynchus mykiss,Walbaum),an ancient teleost fish

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Marine Life Science & Technology 2024年第2期6卷 266-279页

作者： Weiguang Kong Guangyi Ding Gaofeng Cheng Peng Yang Zhen Xu Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China department of Aquatic Animal Medicine College of FisheriesHuazhong Agricultural UniversityWuhan 430070China

The eye,as a specialized visual organ,is directly exposed to the external environment,and,therefore,it faces constant chal-lenges from external pathogenic organisms and toxins.In the ocular mucosa(OM)of mammals,mucosal-associated lymphoid tissues(MALTs)constitute the primary line of defense.However,the immune defense role of the OM remains unknown in aquatic vertebrates.To gain insights into the immune processes within the OM of teleost fish,we developed an infection model of rainbow trout(Oncorhynchus mykiss)OM using a parasite,Ichthyophthirius multifiliis(Ich).Immunofluorescence,qPCR,and H&E staining revealed that Ich successfully infiltrates the OM of rainbow trout,leading to pathological struc-tural changes,as evidenced by A&B staining.Importantly,the qPCR results indicate an up-regulation of immune-related genes following Ich infection in the OM.Moreover,transcriptome analyses were conducted to detect immune responses and impairments in eye function within the OM of rainbow trout with Ich infection.The results of the transcriptome analysis that Ich infection can cause an extensive immune response in the OM,ultimately affecting ocular function.To the best of our knowledge,our findings represent for the first time that the teleost OM could act as an invasion site for parasites and trigger a strong mucosal immune response to parasitic infection.

关键词： Ocular mucosa Mucosal immunity Transcriptome analysis Oncorhynchus mykiss Ichthyophthirius multifiliis

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Lineaperpetua gen.nov.:a new diatom genus in the Thalassiosirales supported by morphology and molecular data

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Journal of Oceanology and Limnology 2024年第1期42卷 277-290页

作者： Pan YU Lin YANG Qingmin YOU John Patrick KOCIOLEK Kangyu WANG Yonghong BI Quanxi WANG College of Life Sciences Shanghai Normal UniversityShanghai 200234China Institute of hydrobiology Chinese Academy of SciencesWuhan 430072China Museum of Natural History and department of Ecology and Evolutionary Biology University of ColoradoUCB 218Boulder CO 80309USA

Based on a combination of morphology and molecular data of ribosomal DNA genes,a new diatom genus Lineaperpetua gen.nov.Yu,You,Kociolek&Wang is described.The features that help define Lineaperpetua at the level of genus include:a tangentially undulated valve face;continuous cribra areolae on the valve interior consisting of pores arranged as strips;single rimoportula located inside the ring of marginal fultoportulae.Additionally,phylogenetic analysis based on nuclear small subunit(SSU)rDNA sequences and nuclear large subunit(LSU)rDNA gene placed the three strains of L.lacustris in a single,monophyletic clade at a considerable sequence distance from the other genera(Thalassiosira,Conticribra,Planktoniella,Shinodiscus,and other genera)belonging to Thalassiosirales.Despite the similarities with some species of Thalassiosira,Conticribra,and Spicaticribra,the suite of features found in Lineaperpetua differentiate it from these other genera.These molecular data and morphological characters suggest an affinity of the new genus to the Thalassiosiraceae.

关键词： diatom morphology new genus phylogeny taxonomy Thalassiosiraceae

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A new diatom genus Spargeria gen.nov.(Bacillariophyceae)from Xizang,China,and the description of two new species

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Journal of Oceanology and Limnology 2024年第1期42卷 291-303页

作者： Yan LIU John Patrick KOCIOLEK Li WANG Xinxin LU Huan ZHU Guoxiang LIU Fengyang SUI Yawen FAN College of Life Science and Technology Harbin Normal UniversityHarbin 150025China Museum of Natural History and department of Ecology and Evolutionary Biology University of ColoradoBoulder CO 80309USA Key Laboratory of Algal Biology Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China

During our investigation of diatom biodiversity in Xizang,two species exhibited unique morphological features discriminative from all previously known genera.Herein we describe these two species and describe as new the genus,Spargeria gen.nov.The new genus features narrow to wide rectangular valves,narrow valve mantles,filiform raphe branches that occur on the valve face only,terminal raphe fissures straight or slightly deflected to same side,bow-tie shaped central areas,chambered striae present on the valve face only,being absent from the mantle,wider striae near the axial area and very narrow near the margin,multiseriate striae with small and round areolae that are occluded externally.Comparatively,Spargeria zhuii sp.***.has larger and robust valves,radiate striae,with one divergent stria near the apices,while Spargeria chenia sp.***.is smaller,with narrow valves,striae slightly radiate in the middle,becoming convergent or parallel near apices.This new genus belongs to the family Pinnulariaceae,and it was compared and contrasted with other genera of this family.Our work suggests the need for continued studies to document the biodiversity of diatoms in Xizang.

关键词： Spargeria new genus Pinnulariaceae morphology Xizang

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Inventory and Distribution of Benthic Macroinvertebrates, Indicators of Water Quality in Four Forested Watercourses in Centre Region of Cameroon

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Open Journal of Ecology 2024年第4期14卷 381-394页

作者： Eric B. Biram à Ngon Sylvie B. Chinche Josephine Ndjama Jean Dzavi Donald L. Nyame Mbia Mathias Nwaha Serge R. Gwos Nhiomock Blaise R. Mboye Ivone L. Tchaouapi Ulrich Tchouta Chamberline Ngalamou Samuel Foto Menbohan Research Centre for Water and Climate Change Institute of Geological and Mining Research Yaound&#233 Cameroon department of Fisheries and Aquatic Resources Management Buea Cameroon Laboratory of hydrobiology and Environment University of Yaound&#233 Yaound&#233 Cameroon Laboratory of hydrobiology and Ichthyology Libreville Gabon

The inventory of benthic macroinvertebrate species was carried out in some streams of the Mefou catchment area, from August 2021 to August 2022, in order to determine the biological groups that make up the population and characterise these environments. The dataset acquired during this study made it possible to update the existing database and contribute to the knowledge of the biological groups associated in these environments, and to provide additional information on the existing ones in relation to bioindication. Overall 80 families were identified and, on the basis of frequencies of occurrence greater than 75%, 22 families were retained as potential biological indicators. The remarkable diversity of insects and the low abundance of Diptera reflect the low degradation of environments and the good quality of water. The high diversity indices obtained reflect the maintenance of the favourable ecological conditions that favours the development of a balanced and, integrated biological community capable of adapting to changes.

关键词： Benthic Macroinvertebrates Bioindicators Biological Quality Forest Watercourse Cameroon

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Flat-footed Females and Missing Males:A New Genus and Species of Pleciofungivoridae(Diptera:Bibionomorpha)Represents the First Record of the Family from Mid-Cretaceous Kachin Amber

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Acta Geologica Sinica(English Edition) 2024年第3期98卷 541-547页

作者： ZHANG Qingqing Wiesław KRZEMINSKI Jan SEVCIK Vladimir BLAGODEROV Agnieszka SOSZYNSKA Kornelia SKIBINSKA Yunnan Key Laboratory for Palaeobiology Institute of PalaeontologyYunnan UniversityKunming 650500China MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment Yunnan UniversityKunming 650500China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesNanjing 210008China Institute of Systematics and Evolution of Animals Polish Academy of Sciences52551 KrakówPoland University of Ostrava Faculty of ScienceDepartment of Biology and EcologyChittussiho 10CZ-71000 OstravaCzech Republic National Museums Scotland EdinburghUK Natural History Museum LondonUK University of Lodz Faculty of Biology and Environmental ProtectionDepartment of Invertebrate Zoology and HydrobiologyBanacha 12/1690-237ŁódźPoland

A new genus and species,Cretopleciofungivora simpsoni gen.et sp.nov.,from the extinct family Pleciofungivoridae(Diptera:Bibionomorpha),is discovered in mid-Cretaceous Kachin amber.Previously,this family was known only from imprints in sedimentary rocks of the Jurassic and the Lower Cretaceous.Discovery of a representative of Pleciofungivoridae in Kachin amber confirms the presence of the family in the Upper Cretaceous.The new species has a unique structure of fore tarsus,with lobed and extended tarsal segments Ⅱ to Ⅳ,a feature hitherto known only in a few species of extant Sciaroidea.Although not particularly rare,the new species is currently known only from female specimens.Possible reasons for this phenomenon,very unusual in Sciaroidea,are briefly discussed,including parthenogenesis as a potentially plausible hypothesis.

关键词： fungus gnats Sciaroidea Upper Cretaceous Burmese amber swollen tarsomeres

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Improved lakeshore sediment microenvironment and enhanced denitrification efficiency by natural solid carbon sources

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International Journal of Sediment Research 2022年第6期37卷 823-832页

作者： Shihao Gong Oscar Omondi Donde Qijia Cai Xingqiang Wu Kezheng Song Chunbo Wang Pei Hong Bangding Xiao Cuicui Tian Institute of hydrobiology Chinese Academy of Sciences University of Chinese Academy of Sciences department of Environmental Science Egerton University School of Ecology and Environment Anhui Normal University

At present, the high level of nitrate in tailwater of wastewater treatment plants(WWTPs) has continued to cause serious environmental problems. In current study, wood chips and bark, serving as natural solid carbon source(NSCS), were applied to enhance the denitrification capacity of lakeshore sediment to remove superabundant nitrate in tailwater. The results show that NSCS had a positive effect on denitrification process for lakeshore sediment and increased the total phosphorus removal capacity by 212%-601%. Comparatively, wood chips were better in enhancing denitrification ability of lakeshore sediment for a longer time. At the 70 th day, the nitrate elimination(NEL) of the wood chip-sediment integrated system(WSIS) was 20% and 9% higher than the control system(CS) and bark-sediment integrated system(BSIS), respectively. For the WSIS, the microbial activity and the abundance of nicotinamide adenine dinucleotide(NADH) were significantly increased, and the sediment anaerobic zone was rapidly formed,which were conducive to the denitrification of the sediment. At the DNA level, both groups presented an inconsistency in the abundance of functional denitrification genes with the NEL. At the enzyme level,wood chips significantly increased the nitrate and nitrite reductase activities of the sediment, and promoted denitrification. From the perspective of microbial communities, wood chips highly promoted the abundance of norank＿f＿BIrii41 Proteobacteria and Ruminclostridum more than other denitrifying and potential denitrifying bacteria in the process of sediment denitrification enhancement.

关键词： Natural solid carbon source Sediment Denitrification Nitrate elimination

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GSPT1 Functions as a Tumor Promoter in Human Liver Cancer

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Current Medical Science 2023年第1期43卷 104-114页

作者： Yi-qing XI Jing-bo GAO Xuan-fei LI Li-hua XU Zhi-LI Li-jie YANG Jing WANG Hua-qiao WANG Xiao-chang FANG Si-rui HUANG Wei XIE Mao-hui FENG Jing-wei ZHANG department of Breast and Thyroid Surgery Zhongnan Hospital of Wuhan UniversityWuhan430071China department of Gastrointestinal Surgery Zhongnan Hospital of Wuhan UniversityWuhan430071China Hubei Cancer Clinical Study Center Wuhan UniversityWuhan430071China Institute of hydrobiology Chinese Academy of SciencesWuhan430071China

Objective This study analyzed the role of G1 to S phase transition 1 protein(GSPT1)in promoting progression of liver cancer cells.Methods A bioinformatics database was used to analyze the expression levels of GSPT1 in liver cancer tissues and the prognosis of patients.Subsequently,Western blotting and quantitative PCR were used to verify the expression levels of GSPT1 between normal hepatocytes and hepatoma cells.We used a CRISPR/Cas9 system to construct knockouts of GSPT1 in HepG2 and HCCLM9 liver cancer cells.The effect of GSPT1 on liver cancer cell migration and invasion was analyzed using flow cytometry,migration,and tumor formation assays.Results The Cancer Genome Atlas Liver Hepatocellular Carcinoma dataset indicated that GSPT1 expression was upregulated in liver cancer cell lines,and patients with liver cancer had poor prognosis.Knockout of GSPT1 in cells significantly inhibited tumor proliferation,cell migration,and growth in vivo.Conclusion In this study,we found that GSPT1 promotes the migration and invasion of liver cancer cells.

关键词： Gl to S phase transition I protein liver cancer migration invasion

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Effect of trans-reservoir water supply on carbon and nitrogen stable isotope composition in hydrologically connected reservoirs in China

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Chinese Journal of Oceanology and Limnology 2017年第5期35卷 1117-1126页

作者：张华俊彭亮古滨河韩博平 department of Ecology and Institute of hydrobiology Jinan University Soil and Water Science department University of Florida

Dajingshan,Fenghuangshan and Meixi reservoirs are located in Zhuhai,a coastal city in southern China,and they function to supply drinking water to Zhuhai and Macao.For eff ectively supplying waster,they are hydrologically connected and Dajingshan Reservoir first receives the water pumped from the river at Guangchang Pumping Station,and then feeds Fenghuangshan Reservoir,and the two well-connected reservoirs are mesotrophic.Meixi Reservoir is a small and oligotrophic water body and feeds Dajingshan Reservoir only in wet seasons when overfl ow occurs.Particulate organic matter(POM)was collected from three hydrologically connected water supply reservoirs,and seasonal variations of POM were ascertained from stable carbon and nitrogen isotopes in wet and dry seasons,and the ef fects of pumping water and reservoir connectivity on POM variations and composition were demonstrated by the relationships of the stable isotope ratios of POM.Seasonality and similarity of stable carbon and nitrogen isotopes of POM varied with hydrodynamics,connectivity and trophic states of the four studied water bodies.The two wellconnected reservoirs displayed more similar seasonality for δ^(13)C_(POM) than those between the river station and the two reservoirs.However,the opposite seasonality appeared for δ^(15)N_(POM) between the above waters and indicates dif ferent processes aff ecting the stable carbon and nitrogen isotopes of POM.δ^(13)C_(POM) and δ^(15)N_(POM) changed little between wet and dry seasons in Meixi Reservoir-a low productive and rain-driven system,suggesting little POM response to environmental changes in that water system.As expected,connectivity enhanced the similarity of the stable isotope ratios of POM between the water bodies.

关键词：稳定同位素比率储层连通性水库供水水文碳氮中国季节变化氮同位素

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Nutrient variability and its influence on nitrogen processes in a highly turbid tropical estuary(Bangpakong, Gulf of Thailand)

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Journal of Environmental Sciences 2016年第7期28卷 131-142页

作者： Adriano A.Bordalo Kashane Chalermwat Catarina Teixeira Laboratory of hydrobiology and Ecology Institute of Biomedical Sciences University of Porto Centre of Marine and Environmental Research University of Porto department of Aquatic Sciences Burapha University

Estuarine ecosystems in SE Asia have been poorly studied when compared to other tropical environments. Important gaps exist particularly in the understanding of their biogeochemical function and contribution to global change. In this work we looked into N-turnover in the water column and sediments of the Bangpakong estuary（13°N）. A seasonal sampling program was performed along the salinity gradient covering different stretches of the estuary（68 km）.Key physical and chemical characteristics were also monitored in order to unravel possible environmental controls. Results showed the occurrence of active denitrification in sediments（5.7–50.9 nmol N-N2/（cm3·hr））, and water column（3.5–1044 pmol N-N2/（cm3·hr））. No seasonal or spatial variability was detected for denitrification potential in sediment samples. However, in the water column, the denitrification activity peaked during the transition season in the downstream sites coinciding with high turbidity levels. Therefore, in that period of the year, the water column compartment may be an important contributor to nitrate reduction within the estuary. The rather low nitrification rates detected were not always measurable, probably due to the reduced oxygen content and high siltation. This study is one of the few dealing simultaneously with sediments and water column processes in a highly turbid tropical estuary.Therefore, it emerges as a valuable contribution for the understanding of the dynamics of the nitrogen cycle in tropical environments by exploring the role of estuarine N microbial activity in reducing the effects of increased nitrogen loads.

关键词： Nutrients Denitrification Nitrification Tropical estuary Bangpakong River

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