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A comparison of two methods to assess audience-induced changes in male mate choice

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Current Zoology 2012年第1期58卷 84-94页

作者： Ziege, Madlen Hennige-Schulz, Carmen muecksch, frauke Bierbach, David Tiedemann, Ralph Streit, Bruno Plath, Martin Department of Ecology & Evolution J.W. Goethe University Frankfurt Siesmayerstrasse 70-72 D-60054 Frankfurt am Main Germany Institute of Biochemistry & Biology Unit of Evolutionary Biology & Systematic Zoology University of Potsdam Karl-Liebknecht Str. 24-25 14476 Potsdam Germany

Multidirectional communicative interactions in social networks can have a profound effect on mate choice behavior. Male Atlantic mollyPoecilia mexicanaexhibit weaker mating preferences when an audience male is presented. This could be a male strategy to reduce sperm competition risk: interacting more equally with different females may be advantageous because rivals might copy mate choice decisions. In line with this hypothesis, a previous study found males to show a strong audience effect when being observed while exercising mate choice, but not when the rival was presented only before the choice tests. Audience effects on mate choice decisions have been quantified in poeciliid fishes using association preference designs, but it remains unknown if patterns found from measuring association times translate into actual mating behavior. Thus, we created five audience treatments simulating different forms of perceived sperm competition risk and determined focal males’ mating preferences by scoring pre-mating (nipping) and mating behavior (gonopodial thrusting). Nipping did not reflect the pattern that was found when association preferences were measured, while a very similar pattern was uncovered in thrusting behavior. The strongest response was observed when the audience could eavesdrop on the focal male’s behavior. A reduction in the strength of focal males’ preferences was also seen after the rival male had an opportunity to mate with the focal male’s preferred mate. In comparison, the reduction of mating preferences in response to an audience was greater when measuring association times than actual mating behavior. While measuring direct sexual interactions between the focal male and both stimulus females not only the male’s motivational state is reflected but also females’ behavior such as avoidance of male sexual harassment.

关键词：择偶行为男性交配行为同时测量评估竞争风险社会网络行为模式

Plant grafting:Molecular mechanisms and applications

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Molecular Plant 2024年第1期17卷 75-91页

作者： Ming Feng frauke Augstein Abdul Kareem Charles W.Melnyk Department of Plant Biology Linnean Center for Plant BiologySwedish University of Agricultural SciencesAlmas allé575651 UppsalaSweden

People have grafted plants since antiquity for propagation,to increase yields,and to improve stress *** cutting and joining of tissues activates an incredible regenerative ability as different plants fuse and grow as *** over a hundred years,people have studied the scientific basis for how plants ***,new techniques and a deepening knowledge of the molecular basis for graft formation have allowed a range of previously ungraftable combinations to ***,we review recent developments in our understanding of graft formation,including the attachment and vascular formation *** analyze why plants graft and how biotic and abiotic factors influence successful *** also discuss the ability and inability of plants to graft,and how grafting has transformed both horticulture and fundamental plant *** our knowledge about plant grafting improves,new combinations and techniques will emerge to allow an expanded use of grafting for horticultural applications and to address fundamental research questions.

关键词： plant grafting regeneration mobile molecules tissue adhesion vascular differentiation stress tolerance

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量身定制的物料流

现代制造 2024年第4期 42-42页

作者： frauke Finus 不详

连续不断并安全可靠地运输和存放重物是一件听起来容易做起来难的事情。Lodige工业公司的物流系统始终是精密的、个性化的物流解决方案。即使在大规模生产阶段,单批次加工零件毛坯的数量往往不超过20件,此时能够灵活运用激光切割和压弯... 详细信息

连续不断并安全可靠地运输和存放重物是一件听起来容易做起来难的事情。Lodige工业公司的物流系统始终是精密的、个性化的物流解决方案。即使在大规模生产阶段,单批次加工零件毛坯的数量往往不超过20件,此时能够灵活运用激光切割和压弯设备无疑是一项显著的优势。

关键词：物流系统零件毛坯激光切割物料流量身定制物流解决方案个性化灵活运用

A simple guideline to apply excitation-emission matrix spectroscopy(EEMs)for the characterization of dissolved organic matter(DOM)in anoxic marine sediments

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Acta Oceanologica Sinica 2023年第1期42卷 109-119页

作者： Shuchai Gan Verena BHeuer frauke Schmidt Lars Wörmer Kai-Uwe Hinrichs MARUM—Center for Marine Environmental Sciences University of BremenBremenD-28359Germany

Marine sediments represent a major carbon reservoir on *** organic matter(DOM)in pore waters accumulates products and intermediates of carbon cycling in *** application of excitation-emission matrix spectroscopy(EEMs)in the analysis of subseafloor DOM samples is largely unexplored due to the redox-sensitive matrix of anoxic pore ***,this study aims to investigate the interference caused by the matrix on EEMs and propose a guideline to prepare pore water samples from anoxic marine *** parameters determined by fluorescence spectra include 3D-index derived from EEMs after parallel factor analysis(PARAFAC),fluorescence index(FI)(contribution of terrigenous DOM),biological index(BIX)and humification index(HIX)derived from 2D emission ***,we investigated the impacts of extensively-presented ions as typical electron acceptors,which are utilized by anaerobic microbes and stratified in marine sediments:Fe(II),Fe(III),Mn(II)and sulfide in anoxic pore water resulted in biases of fluorescent *** proposed threshold concentrations of these ions when the interference on EEMs *** removal of sulfide from sulfide-rich samples could be achieved by flushing with N_(2)for 2 ***,the tests based on DOM standard were further verified using pristine samples from marine *** was a significant change in the fluorescence spectra of DOM in anoxic sediments from the Rhône *** study demonstrated that the change was caused by oxidation of the matrix rather than the intrinsic alteration of *** was confirmed by extracted DOM via both EEMs analysis and Fourier transform ion cyclotron resonance mass spectrometry(FT-ICR-MS).Slight oxidation of sulfur-containing compounds(e.g.,sulfhydryl)and polyphenol-like compounds ***,a sample preparation sequence is proposed for pore water from anoxic *** method enables measurement with small volumes of the sample(e.g.,50µL in this study)an

关键词： marine subsurface sediment EEMs PARAFAC FT-ICR-MS anaerobic pore water

Transgenerational bone toxicity in F3 medaka (Oryzias latipes) induced by ancestral benzo[a]pyrene exposure: Cellular and transcriptomic insights

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Journal of Environmental Sciences 2023年第5期127卷 336-348页

作者： Jiezhang Mo Miles Teng Wan DorisWai-Ting Au Jingchun Shi Nathan Tam Xian Qin Napo K.M.Cheung Keng Po Lai Christoph Winkler Richard Yuen-Chong Kong frauke Seemann Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 510000China Shenzhen Key Laboratory for the Sustainable Use of Marine Biodiversity Research Centre for the Oceans and Human HealthShenzhen Research InstituteCity University of Hong KongShenzhen 518057China State Key Laboratory of Marine Pollution and Department of Chemistry City University of Hong KongHong Kong SARChina Laboratory of Environmental Pollution and Integrative Omics Guilin Medical UniversityHuan Cheng North 2nd Road 109Guilin 541004China Department of Biological Sciences National University of Singapore119077Singapore Center for Coastal Studies and Department of Life Sciences Texas A&M University-Corpus ChristiCorpus ChristiTexas 78412USA

Benzo[a]pyrene(BaP),a ubiquitous pollutant,raises environmental health concerns due to induction of bone toxicity in the unexposed *** of F0 ancestor medaka(Oryzias latipes)to 1μg/L BaP for 21 days causes reduced vertebral bone thickness in the unexposed F3 male *** reveal the inherited modifications,osteoblast(OB)abundance and molecular signaling pathways of transgenerational BaP-induced bone thinning were *** analysis showed a reduction in OB *** of the miRNA and mRNA transcriptomes revealed the dysregulation of Wnt signaling(frzb/ola-miR-1–3p,sfrp5/ola-miR-96–5p/miR-455–5p)and bone morphogenetic protein(Bmp)signaling(bmp3/ola-miR-96–5p/miR-181b-5p/miR-199a-5p/miR-205–5p/miR-455–5p).Both pathways are major indicators of impaired bone formation,while the altered Rank signaling in osteoclasts(c-fos/miR-205–5p)suggests a potentially augmented bone ***,a typical BaP-responsive pathway,the Nrf2-mediated oxidative stress response(gst/ola-miR-181b-5p/miR-199a-5p/miR-205),was also ***,mRNA levels of epigenetic modification enzymes(e.g.,hdac6,hdac7,kdm5b)were found *** findings indicated that epigenetic factors(e.g.,miRNAs,histone modifications)may directly regulate the expression of genes associated with transgenerational BaP bone toxicity and warrants further *** identified candidate genes and miRNAs may serve as potential biomarkers for BaP-induced bone disease and as indicators of historic exposures in wild fish for conservation purposes.

关键词： Polycyclic aromatic hydrocarbons (PAHs) Transcriptome Impaired bone formation Molecular pathways MicroRNAs Medaka(Oryzias latipes)

Diet shift in bank voles induced by competition from grey-sided voles?

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Integrative Zoology 2019年第4期14卷 376-382页

作者： Magnus MAGNUSSON Gustaf SAMELIUS Birger HÖRNFELDT frauke ECKE Department of Wildlife Fishand Environmental StudiesSwedish University of Agricultural SciencesUmeåSweden 2Snow Leopard Trust SeattleUSA Department of Ecology Swedish University of Agricultural SciencesRiddarhyttanSweden

Grey-sided voles(Myodes rufocanus)and bank voles(Myodes glareolus)co-exist in boreal forests in northern *** studies suggest that the 2 species interact interspecifically,the grey-sided vole being the dominant *** tested the hypothesis that bank voles shift their diet due to competition with the dominant grey-sided vole by studying stable isotope ratios in both *** samples were taken from voles in patches of old forest occupied by only bank voles and patches of old forest occupied by both grey-sided voles and bank *** found that:(i)stable isotope ratios of bank voles differed in areas with and without grey-sided voles;and that(ii)the stable isotope ratios of bank voles were more similar to those of grey-sided voles in areas where grey-sided voles were *** data suggests that grey-sided voles forced bank voles to change their diet due to interspecific competition.

关键词： competition diet shift Myodes glareolus Myodes rufocanus stable isotopes

Clinical high-risk criteria of psychosis in 8–17-year-old community subjects and inpatients not suspected of developing psychosis

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World Journal of Psychiatry 2022年第3期12卷 425-449页

作者： frauke Schultze-Lutter Petra Walger Maurizia Franscini Nina Traber-Walker Naweed Osman Helene Walger Benno G Schimmelmann Rahel Flückiger Chantal Michel Department of Psychiatry and Psychotherapy Medical FacultyHeinrich-Heine UniversityDüsseldorf 40629North-Rhine WestphaliaGermany Department of Psychology Faculty of PsychologyAirlangga UniversitySurabaya 60286Indonesia University Hospital of Child and Adolescent Psychiatry and Psychotherapy University of BernBern 3000Switzerland Department of Child and Adolescent Psychiatry and Psychotherapy University of ZürichZürich 8032Germany Department of Psychiatry and Psychotherapy Ludwig-Maximilian-UniversityMunich 80336BavariaGermany University Hospital of Child and Adolescent Psychiatry University Hospital Hamburg-EppendorfHamburg 20246Germany

BACKGROUND In children and adolescents compared to adults,clinical high-risk of psychosis(CHR)criteria and symptoms are more prevalent but less psychosis-predictive and less clinically *** on high rates of non-converters to psychosis,especially in children and adolescents,it was suggested that CHR criteria were:(1)Pluripotential;(2)A transdiagnostic risk factor;and(3)Simply a severity marker of mental disorders rather than specifically *** any of these three alternative explanatory models were true,their prevalence should differ between persons with and without mental disorders,and their severity should be associated with functional impairment as a measure of *** To compare the prevalence and severity of CHR criteria/symptoms in children and adolescents of the community and *** In the mainly cross-sectional examinations,8–17-year-old community subjects(n=233)randomly chosen from the population register of the Swiss Canton Bern,and inpatients(n=306)with primary diagnosis of attention-deficit/hyperactivity disorder(n=86),eating disorder(n=97),anxiety including obsessive–compulsive disorder(n=94),or autism spectrum disorder(n=29),not clinically suspected to develop psychosis,were examined for CHR symptoms/*** items of the Structured Interview for Psychosis-Risk Syndromes(SIPS)were used to assess the symptomatic ultra-high-risk criteria,and the Schizophrenia Proneness Instrument,Child and Youth version(SPI-CY)was used to assess the 14 basic symptoms relevant to basic symptom *** examined group differences in frequency and severity of CHR symptoms/criteria usingχ^(2) tests and nonparametric tests with Cramer’s V and Rosenthal’s r as effect sizes,and their association with functioning using correlation *** The 7.3%prevalence rate of CHR criteria in community subjects did not differ significantly from the 9.5%rate in *** and severity of CHR criteria never differed bet

关键词： Psychotic disorders Risk assessment Minors Community Inpatients Psychosocial functioning

Suitability of common models to estimate hydrology and diffuse water pollution in North-eastern German lowland catchments with intensive agricultural land use

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Frontiers of Agricultural Science and Engineering 2018年第4期5卷 420-431页

作者： Muhammad WASEEM frauke KACHHOLZ Jens TRANCKNER Faculty of Agriculture and Environmental Sciences University of Rostock

Various process-based models are extensively being used to analyze and forecast catchment hydrology and water quality. However, it is always important to select the appropriate hydrological and water quality modeling tools to predict and analyze the watershed and also consider their strengths and weaknesses. Different factors such as data availability, hydrological, hydraulic, and water quality processes and their desired level of complexity are crucial for selecting a plausible modeling tool. This review is focused on suitable model selection with a focus on desired hydrological, hydraulic and water quality processes(nitrogen fate and transport in surface, subsurface and groundwater bodies) by keeping in view the typical lowland catchments with intensive agricultural land use,higher groundwater tables, and decreased retention times due to the provision of artificial drainage. In this study, four different physically based, partially and fully distributed integrated water modeling tools, SWAT(soil and water assessment tool), SWIM(soil and water integrated model),HSPF(hydrological simulation program– FORTRAN) and a combination of tools from DHI(MIKE SHE coupled with MIKE 11 and ECO Lab), have been reviewed particularly for the Tollense River catchment located in North-eastern Germany. DHI combined tools and SWAT were more suitable for simulating the desired hydrological processes, but in the case of river hydraulics and water quality, the DHI family of tools has an edge due to their integrated coupling between MIKE SHE, MIKE 11 and ECO Lab. In case of SWAT, it needs to be coupled with another tool to model the hydraulics in the Tollense River as SWAT does not include backwater effects and provision of control structures. However, both SWAT and DHI tools are more data demanding in comparison to SWIM and HSPF. For studying nitrogen fate and transport in unsaturated, saturated, and river zone, HSPF was a better model to simulate the desired nitrogen transformation and t

关键词： diffuse pollution ECO Lab HSPF lowland catchment MIKE 11 MIKE SHE modeling tools SWAT SWIM Tollense River water quality

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精密冲裁节约时间和成本

现代制造 2022年第1期 20-21页

作者： frauke Finus 不详

众所周知,灯具中的所有连接件和变型连接件都固定在灯具中,以确保光源的电气接触。过去,这些传统的冲压件和弯曲件一直都是典型的钣金加工件。当前,它们都在伺服冲压机中进行生产。标准件生产厂商提供的这种专业化的伺服冲压-折弯机可... 详细信息

众所周知,灯具中的所有连接件和变型连接件都固定在灯具中,以确保光源的电气接触。过去,这些传统的冲压件和弯曲件一直都是典型的钣金加工件。当前,它们都在伺服冲压机中进行生产。标准件生产厂商提供的这种专业化的伺服冲压-折弯机可以节约时间和生产成本。照明技术专业厂BJB公司利用Bihler公司生产制造的标准数控冲压设备生产制造符合Meusburger公司标准的钣金件,因此节约了大笔的资金和大量的时间。

关键词：精密冲裁钣金加工数控冲压弯曲件折弯机冲压件钣金件冲压机