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Water transfer determines the regional spread dynamics of non-native fish species

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Water Biology and Security 2023年第2期2卷 73-79页

作者： jiao qin Bjorn Victor Schmidt Lei Zhang Fei Cheng Songguang Xie The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences Institute of HydrobiologyChinese Academy of SciencesWuhanChina Marine Resources Big Data Center of South China Sea Southern Marine Science and Engineering Guangdong Laboratory(Zhanjiang)ZhanjiangChina Department of Biological and Environmental Sciences Texas A&M UniversityCommerceTXUSA State Key Laboratory of Marine Resources Utilization in South China Sea Hainan UniversityHaikouChina

Interbasin water transfer projects(IBWT's)have emerged as dispersal corridors for aquatic species.However,little is known about how water transfer affects regional spread dynamics,or shapes the genetic diversity patterns of non-native populations.Shimofuri Goby Tridentiger bifasciatus is a globally introduced fish species with many wellestablished populations in IBWT's.Here,we used nuclear microsatellites to assess the genetic diversity and population structure of the Shimofuri Goby in its native and introduced sites belonging to two IBWT's in China.Our objectives were to(1)reveal the genetic diversity patterns of the Shimofuri Goby during regional spread,and(2)identify its mode of spreading in water transfer systems.We observed(1)a high level of genetic diversity in non-native populations without evidence of bottleneck effects,(2)that non-native populations with a longer water transfer times had a higher private allele richness,and(3)that non-native populations showed a highly mixed genetic structure,low level of genetic differentiation,and no significant relationship between geographical and genetic distances.Our results indicate that the genetic patterns of diversity of non-native populations are mainly shaped by a linear cascade spread processes due to long-distance movement of larvae,and are probably related to propagule pressure caused by the construction of water transfer.To manage the non-native populations of T.bifasciatus,preventive actions and physical removal should be implemented in IBWT's.

关键词： Biological invasions Water diversion Propagule pressure Dispersal South-to-North water transfer Tridentiger bifasciatus

Fertility control of Rattus nitidus using quinestrol:effects on reproductive organs and social behavior

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Integrative Zoology 2013年第1期8卷 9-17页

作者： Quansheng LIU jiao qin qin CHEN Deng WANG Dazhao SHI Guangdong Entomological Institute GuangzhouChina College of Agronomy and Biotechnology China Agricultural UniversityBeijingChina Guangdong Provincial Public Laboratory on Wild Animal Conservation and Management GuangzhouChina

Fertility control has been identified by studies in the laboratory and the field as a more appropriate and long-term control strategy for rodent pests than lethal control.In this study,we investigated the effects of quinestrol on mass of reproductive organs and on social behaviors in female and male Himalayan field rats(Rattus nitidus).A total of 16 adult females and 16 adult males were randomly assigned to 4 groups.One male and one female group were fed rice with 0.005%quinestrol by weight for 7 days,and another 2 groups were fed rice only.After 7 days,rats were assigned to 10 min dyadic encounters between groups,and investigation,aggression,defense and attack latency were quantified.All animals were killed on day 10,and reproductive organs were dissected and weighed.Dyadic encounter data showed that there were obvious changes in social behaviors of quinestrol-treated rats.Quinestrol significantly inhibited the investigative behavior of quinestrol-treated males toward control females in Rattus nitidus,but seldom affected investigation between control males and quinestrol-treated females.Aggression of control females toward quinestrol-treated males was higher than that of quinestrol-treated females,and defense of quinestrol-treated males toward control females was more remarkable than that of control males.Quinestrol remarkably decreased wet masses of epididymis and spermotophore in males and ovaries in females,but had no effect on wet masses of testes and uteri after quinestrol treatment.These results indicate that the anti-fertility effects of quinestrol on R.nitidus are attributed to not only suppressing reproductive organs but also impacting social behaviors associated with territory defense and mate choice.

关键词： fertility control quinestrol Rattus nitidus rodent pest social behavior

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基于传播树的多特征谣言检测方法

电子学报 2024年第5期52卷 1609-1618页

作者：张鑫昕潘善亮茅琴娇宁波大学信息科学与工程学院浙江宁波315211 宁波工程学院网络空间安全学院浙江宁波315211

目前网络谣言的检测方法主要是从传播路径中寻找信息,大多只采用文本信息作为初始传播特征,因此难以捕捉到丰富的传播结构表示.本文根据谣言的传播路径,提取文本和用户可信度特征,构建一种基于传播树的多特征谣言检测模型.模型通过图卷... 详细信息

目前网络谣言的检测方法主要是从传播路径中寻找信息,大多只采用文本信息作为初始传播特征,因此难以捕捉到丰富的传播结构表示.本文根据谣言的传播路径,提取文本和用户可信度特征,构建一种基于传播树的多特征谣言检测模型.模型通过图卷积网络聚合文本传播信息,使用多头注意力机制挖掘文本传播树的层内依赖关系,同时对用户传播树中的每个用户构建可信度序列,并采用M-Attention模块捕获有效的用户可信度特征.实验结果表明,本文提出的方法在Twitter15、Twitter16和Weibo数据集上的检测准确率达到89.3%、91.7%和96.4%,相比当前最优的传播树模型Bi-GCN(Binary Graph Convolutional Network)分别提升4.8%、4.2%和3%.

关键词：谣言检测传播结构图卷积网络注意力机制自然语言处理

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Plant Diversity 2020年第5期42卷 362-369页

作者： jiao qin Wei Zhang Shi-Bao Zhang Ji-Hua Wang Key Laboratory of Economic Plants and Biotechnology Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan650201China Yunnan Key Laboratory for Wild Plant Resources KunmingYunnanChina Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnanChina Flower Research Institute Yunnan Academy of Agricultural SciencesKunmingYunnan650205China

Mycorrhizal fungi are essential for the growth and development of both epiphytic(growing on trees)and lithophytic(growing on rocks)orchids.Previous studies indicate that in lowland tropical areas,orchid mycorrhizal fungal compositions are correlated with the life form(i.e.,epiphytic,lithophytic,or terrestrial)of their host plants.We therefore tested if a similar correlation exists in an orchid distributed at higher elevations.Coelogyne corymbosa is an endangered ornamental orchid species that can be found as a lithophyte and epiphyte in subtropical to subalpine areas.Based on high-throughput sequencing of the fungal internal transcribed spacer 2(ITS2)-rDNA region of mycorrhizae of C.corymbosa,we detected 73 putative mycorrhizal fungal Operational Taxonomic Units(OTUs).The OTUs of two dominant lineages(Cantharellales and Sebacinales)detected from C.corymbosa are phylogenetically different from those of other species within the genus Coelogyne,indicating that different orchid species prefer specific mycorrhizal fungi.We also found that the Non-metric multidimensional scaling(NMDS)plots of orchid mycorrhizal fungi were not clustered with life form,the variations among orchid mycorrhizal fungal communities of different life forms were not significant,and most of the OTUs detected from epiphytic individuals were shared by the lithophytic plants,suggesting that orchid mycorrhizal associations of C.corymbosa were not affected by life form.These findings provide novel insights into mycorrhizal associations with endangered ornamental orchids.

关键词： Cantharellales Coelogyninae Epiphytic Life form Orchid mycorrhizal fungi Serendipitaceae

Physiological diversity of orchids

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Plant Diversity 2018年第4期40卷 196-208页

作者： Shibao Zhang Yingjie Yang Jiawei Li jiao qin Wei Zhang Wei Huang Hong Hu Key Laboratory of Economic Plants and Biotechnology Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China University of Chinese Academy of Sciences Beijing 100049 China

The Orchidaceae is a diverse and wide spread family of flowering plants that are of great value in ornamental, medical, conservation, and evolutionary research. The broad diversity in morphology,growth form, life history, and habitat mean that the members of Orchidaceae exhibit various physiological properties. Epiphytic orchids are often characterized by succulent leaves with thick cell walls,cuticles, and sunken stomata, whereas terrestrial orchids possess rhizomes, corms, or tubers. Most orchids have a long juvenile period, slow growth rate, and low photosynthetic capacity. This reduced photosynthetic potential can be largely explained by CO_2 diffusional conductance and leaf internal structure. The amount of light required for plant survival depends upon nutritional mode, growth form,and habitat. Most orchids can adapt to their light environments through morphological and physiological adjustments but are sensitive to sudden changes in irradiance. Orchids that originate from warm regions are susceptible to chilling temperatures, whereas alpine members are vulnerable to high temperatures.For epiphytic orchids, rapid water uptake by the velamen radicum, water storage in their pseudobulbs and leaves, slow water loss, and Crassulacean Acid Metabolism contribute to plant-water balance and tolerance to drought stress. The presence of the velamen radicum and mycorrhizal fungi may compensate for the lack of root hairs, helping with quick absorbance of nutrients from the atmosphere.Under cultivation conditions, the form and concentration of nitrogen affect orchid growth and flowering.However, the limitations of nitrogen and phosphorous on epiphytic orchids in the wild, which require these plants to depend on mycorrhizal fungi for nutrients throughout the entire life cycle, are not clearly understood. Because they lack endosperm, seed germination depends upon obtaining nutrients via mycorrhizal fungi. Adult plants of some autotrophic orchids also gain carbon, nitrogen, phosphorus, and other elements from their mycorrhi

关键词：兰科植物植物学代谢功能科学研究

Renal Fibrosis and Mitochondrial Damage

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Chinese Medical Journal 2018年第22期131卷 2769-2772页

作者： jiao qin Zhang-Zhe Peng Qian Li Rui Wen Li-Jian Tao Department of Nephropathy Changsha Central HospitalChangshaHunan 410000China Department of Nephrology Xiangya HospitalCentral South UniversityChangshaHunan 410008China

The first observations of intracellular structures that probably represented mitochondria were published in the 1840s.The mitochondrion (plural mitochondria)is a double membrane-bound organism that consists of the outer mitochondrial membrane (OMM),intermembrane space, inner mitochondrial membrane,and matrix space,[1] which is prevalent in all mammalian eukaryotic cells other than mature ervthrocytes.

关键词： Renal Fibrosis Mitochondrial Damage

临夏市东西川灌区南干渠临夏县新集镇段改线工程设计

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全面腐蚀控制 2024年第5期38卷 52-54页

作者：王钦皎兰州江明水利水电工程设计咨询有限公司甘肃兰州730000

本文从项目区现状、总体布置及渠道设计等方面分析,并兼顾城市旅游发展要求,充分考虑工程最优性价比,确保下游灌区的正常用水。

关键词：渠道改线水位流量糙率断面

甲型H1N1流感病毒感染致病候选基因的鉴定

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中华医院感染学杂志 2024年第4期34卷 481-488页

作者：刘慧焦芹芹贺宏杰韩哲袁牡丹张辉徐福意董浩胜利油田中心医院儿科呼吸感染科山东东营2570342 胜利油田中心医院感染管理部山东东营257034 滨州医学院药学院山东烟台264000 包头市肿瘤医院放疗科内蒙古包头014030 包头市肿瘤医院放射科内蒙古包头014030

目的通过C57BL/6J(B6)和DBA/2J(D2)亲本品系小鼠流感感染后相关表型及杂交子代BXD小鼠肺脏转录本数据的系统性分析进行基因筛选,以找到在流感病毒感染中发挥作用的候选基因.方法共选取41个BXD小鼠及亲本品系B6和D2的雌性小鼠,在8~12周... 详细信息

目的通过C57BL/6J(B6)和DBA/2J(D2)亲本品系小鼠流感感染后相关表型及杂交子代BXD小鼠肺脏转录本数据的系统性分析进行基因筛选,以找到在流感病毒感染中发挥作用的候选基因.方法共选取41个BXD小鼠及亲本品系B6和D2的雌性小鼠,在8~12周龄之间给予流感病毒甲型鼠肺适应株(H1N1,PR8M)得到相关表型及基因表达量数据,对基因表达量进行聚类分析及加权基因共表达网络分析,构建模块特征值与小鼠病毒载量的相关性,经表达数量性状座位分析,皮尔逊相关性分析,结合全基因组关联研究(GWAS)、小鼠基因组信息学(MGI)、国际小鼠表型联合会(IMPC)三个基因数据库中的信息分析筛选流感病毒感染相关的候选功能基因及确定该基因的遗传调控方式;最后将挑选出的基因进行通路富集分析.结果通过聚类分析和加权基因共表达网络分析,将24219个基因分为23个模块;通过模块与表型的相关性分析,发现MEred、MEgreen、MEma-genta模块与感染密切相关,将其作为核心模块;对核心模块基因通过KEGG和MPO富集分析,结果显示流感病毒相关基因显著参与MAPK信号通路、TNF信号通路等多个细胞免疫相关通路;对核心模块内基因与BXD小鼠流感病毒感染的3种表型(体质量减轻,平均死亡时间和感染后体质量减轻中位数)进行相关性分析,共发现21个基因的肺mRNA表达水平与3种表型均相关(P<0.05);进一步通过GeneNetwork中GEMMA算法对这21个基因行表达数量性状座位分析,结果表明Acpl2受顺式遗传调控,Dusp12、Ovol2、Catsper4、Tmc5、Acsm 1、Fam81a、Rtn4、Rhpn1受反式遗传调控;通过结合MGI,IMPC,GWAS三个基因数据库中的信息分析发现部分基因在免疫通路方面发挥作用.结论通过系统遗传学分析,在小鼠基因组上鉴定了影响流感病毒感染相关的21个候选基因,后续可做进一步的功能验证来阐明其参与流感病毒感染的遗传调控机制.

关键词：流感病毒 BXD小鼠 Reg3g 候选基因

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我国黄毛鼠研究进展

植物保护 2024年第3期50卷 17-23,45页

作者：姜洪雪姚丹丹林思亮秦姣冯志勇广东省农业科学院植物保护研究所农业农村部华南果蔬绿色防控重点实验室广东省植物保护新技术重点实验室广州510640

黄毛鼠Rattus losea是分布在中国长江以南地区以及东南亚地区的重要农田害鼠。该鼠栖息地广,食性杂,盗食各种农作物,还是某些疾病的宿主和传播者。本文从形态特征、种群遗传学、生物学特性、种群生态学、抗药性、防治技术等方面详细介... 详细信息

黄毛鼠Rattus losea是分布在中国长江以南地区以及东南亚地区的重要农田害鼠。该鼠栖息地广,食性杂,盗食各种农作物,还是某些疾病的宿主和传播者。本文从形态特征、种群遗传学、生物学特性、种群生态学、抗药性、防治技术等方面详细介绍了黄毛鼠的研究进展。并根据目前的研究现状和存在问题,提出建立基于精准预测预报,研发生态优先、环境友好的防控新技术、新产品为核心的综合防控技术体系,以期为黄毛鼠的可持续治理提供参考。

关键词：黄毛鼠生物学特性种群动态抗药性防治技术

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