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The combined effect of bromadiolone and ivermectin (iBr) in controlling both rodents and their fleas

Integrative Zoology 2024年第1期19卷 156-164页

作者： Ming LIU Xinrong WAN Wei LIU Xingan MA Zhibin ZHANG State Key Laboratory of Integrated Pest Management Institute of ZoologyChinese Academy of SciencesBeijingChina CAS Center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijingChina Inner Mongolia Minzu University TongliaoInner MongoliaChina International Society of Zoological Sciences BeijingChina

Rodent pests not only cause severe agricultural loss but also spread zoonotic pathogens to human beings.Antico-agulant rodenticides are widely used to decrease the population densities of rodents but often lead to the spillover of ectoparasites becausefleas and ticks may gather on surviving rodents.Therefore,it is necessary to killfleas and ticks before culling rodents to minimize the risk of pathogen transmission.In this study,we used a mixture of ivermectin(an antiparasitic drug)and bromadiolone(an anticoagulant rodenticide)to control both rodent andflea/tick abundances.We found that in a laboratory test,0.01%ivermectin bait was not lethal for greater long-tailed hamsters after 7 days of treatment,while 0.1%ivermectin bait was lethal for approximately 33%of treated rodents.In afield test,bait containing 0.001%,0.005%,0.01%,and 0.05%ivermectin decreased the number offleas per vole of Brandt’s voles to 0.42,0.22,0.12,and 0.2,respectively,compared with 0.77 in the control group,indicating that 0.01%ivermectin bait performed best in removingfleas.In another laboratory test,bait containing a 0.01%ivermectin and 0.005%bromadiolone mixture caused the death of all voles within 6–14 days after the intake of the bait.In thefield test,the bait containing 0.01%ivermectin and 0.005%bromadiolone reduced the average number offleas per vole to 0.35,which was significantly lower than the 0.77 of the control group.Our results indicate that a 0.01%ivermectin and 0.005%bromadiolone mixture could be used to control both rodents andfleas to minimize the spillover risk of disease transmission when using traditional rodenticides.

关键词： bromadiolone flea iBr ivermectin rodent synergistic control

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Sheep grazing causes shift in sex ratio and cohort structure of Brandt’s vole:Implication of their adaptation to food shortage

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Integrative Zoology 2016年第1期11卷 76-84页

作者： Guoliang LI Xianglei HOU Xinrong WAN Zhibin ZHANG State Key Laboratory of Integrated Pest Management Institute of ZoologyChinese Academy of SciencesBeijingChina College of Life Science University of Chinese Academy of SciencesBeijingChina

Livestock grazing has been demonstrated to affect the population abundance of small rodents in grasslands,but the causative mechanism of grazing on demographic parameters,particularly the age structure and sex ratio,is rarely investigated.In this study,we examined the effects of sheep grazing on the cohort structure and sex ratio of Brandt’s vole(Lasiopodomys brandtii)in Inner Mongolia of China by using large manipulative experimental enclosures during 2010-2013.Our results indicated that sheep grazing significantly decreased the proportion of the spring-born cohort,but increased the proportion of the summer-born cohort.Grazing increased the proportion of males in both spring and summer cohorts.In addition,we found a negative relation between population density and the proportion of the overwinter cohort.Our results suggest that a shift in the cohort structure and the sex ratio may be an important strategy for small rodents to adapt to changes in food resources resulting from livestock grazing.

关键词： age structure food resources population demography population regulation sex ratio

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Restricted dispersal determines fine-scale spatial genetic structure of Mongolian gerbils

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Current Zoology 2017年第6期63卷 687-691页

作者： Guiming wanG Wei LIU Yanni wanG Xinrong WAN Wenqin ZHONG Department of Wildlife Fisheries and Aquaculture Mississippi State University Mail Stop 9690 Mississippi State MS 39762 USA Institute of Zoology Chinese Academy of Sciences State Key Laboratory of Integrated Management of Pest Insects and Rodents 1 Beichen West Road Chaoyang District Beijing 100101 China University of Chinese Academy of Sciences Beijing 100190 China College of Chemistry and Life Sciences Zhejiang Normal University 688 Yingbin Road Jinhua Zhejiang 321004 China

Restricted gene flow may cause positive spatial genetic autocorrelation of animal populations at fine spatial scales. The Mongolian gerbil is a territorial, social rodent. Territoriality may create social fences to restrict dispersal or gene flow of Mongolian gerbils to a short distance. Restricted dispersal may differentiate fine-scale spatial genetic structure of populations with increasing distances (i.e., isolation by distance [IBD]). Competition for mates and inbreeding avoidance may result in equal dispersal propensity and subsequently similar spatial genetic autocorrelation between males and females of monogamous gerbils. We genotyped 327 gerbils, live captured from 26 burrow systems on a 9-ha plot in northcentral Inner Mongolia, China, using seven microsatellite loci. Spatial genetic autocorrelation was positive within 80 m and became negative from 80 m to 200 m, suggesting restricted gene flow. Inter-group genetic and geographic distances were related positively, supporting the IBD model. Live trapping data demonstrated equal dispersal propensities of male and female gerbils. Restricted dispersal and social organization may determine fine-scale spatial population genetic structure of social rodents.

关键词： Meriones unguiculatus dispersal isolation by distance microsatellite analysis social rodents spatial genetic autocorrelation

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Large manipulative experiments reveal complex effects of food supplementation on population dynamics of Brandt's voles

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Science China(Life Sciences) 2017年第8期60卷 911-920页

作者： Baofa Yin Guoliang Li Xinrong WAN Guozhen Shang wanhong Wei Zhibin Zhang State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of Sciences College of Bioscience and Biotechnology Yangzhou University

Although food supplementation is well known to increase population density,there is still debate on the causative effects of food supplementation on reproduction,survival,and immigration.Large manipulative experiments,which exclude any confounding effects of dispersal and predation,are essential for clarifying the debate.In this study,we investigated the effects of food supplementation on Brandt's vole population dynamics and plant community in eight large enclosures(0.48 ha each) from2010 to 2014.Food supplementation showed significant positive effects on population density due to increases in recruitment;however,it showed a complex effect on survival of voles:positive in non-breeding seasons,but negative in breeding seasons.In addition,food supplementation increased the quality of plants(as reflected by increased crude protein content),but decreased the quantity of less preferred plants in experimental enclosures.Thus,food seems to have direct positive effects on small rodents through improvement of food supply and indirect negative effects through food-induced density-dependent effects,and may have long-term effects on rodents through altering plant community composition and abundance.

关键词：食物供应种群动态田鼠实验操纵非繁殖季节植物群落密度依赖效应

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网络舆情泛道德化:伴生危害、形成逻辑与治理策略

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山东师范大学学报（社会科学版） 2023年第1期68卷 21-29页

作者：陈珂万欣荣中山大学马克思主义学院广东广州510275

在互联网加持的快信息时代,重大突发事件容易引发网络舆情的泛道德化,给国家治理带来危害,包括加剧公共治理难度、弱化公众理性思考力、导致舆论监督失焦等。泛道德化是思维、环境、机制等多方面要素在网络舆论场中互相影响的产物,其表... 详细信息

在互联网加持的快信息时代,重大突发事件容易引发网络舆情的泛道德化,给国家治理带来危害,包括加剧公共治理难度、弱化公众理性思考力、导致舆论监督失焦等。泛道德化是思维、环境、机制等多方面要素在网络舆论场中互相影响的产物,其表征为当事人身份标签化、叙述表达偏见化、评价标尺非理性化、情绪抒发负面化等。公众心态受失德事件引发、媒介推波助澜而走向群体“极化”,技术机制的缺陷造成网络舆论的弱把关,最终形成网络舆情的泛道德化现象。应建立由政府主导、纳入公众参与、增强多元协同的治理机制,包括:增强治理主体多元化,寻求泛道德化舆情治理的价值共识;搭建多元主体德育交流平台,建立泛道德化舆情协同治理机制;构建智能化道德引领平台,合理开拓泛道德化舆情治理中的技术赋能。

关键词：网络舆情泛道德化舆情治理治理机制

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Density-induced social stress alters oxytocin and vasopressin activities in the brain of a small rodent species

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Integrative Zoology 2021年第2期16卷 149-159页

作者： Shuli HUANG Guoliang LI Yongliang PAN Mingjing SONG Jidong ZHAO Xinrong WAN Charles JKREBS Zuoxin wanG Wenxuan HAN Zhibin ZHANG State Key Laboratory of Integrated Pest Management Institute of ZoologyChinese Academy of SciencesBeijingChina CAS Center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijingChina School of Medicine Huzhou UniversityHuzhouChina Key Laboratory of Human Disease Comparative Medicine National Health Commission of China(NHC)Beijing Engineering Research Center for Experimental Animal Models of Human DiseasesInstitute of Laboratory Animal SciencePeking Union Medicine CollegeChinese Academy of Medical ScienceBeijingChina Department of Zoology University of British ColumbiaVancouverBritish ColumbiaCanada Department of Psychology and Program in Neuroscience Florida State UniversityTallahasseeFloridaUSA College of Resources and Environmental Sciences China Agricultural UniversityBeijingChina

It is known that social stress could alter oxytocin(OT)and arginine-vasopressin(AVP)expression in specific regions of brains which regulate the aggressive behavior of small rodents,but the effects of density-induced social stress are still unknown.Brandt’s voles(Lasiopodomys brandtii)are small herbivores in the grassland of China,but the underlying neurological mechanism of population regulation is still unknown.We tested the effects of housing density of Brandt’s voles on OT/AVP system with physical contact(allowing aggression)and without physical contact(not allowing aggression)under laboratory conditions.Then,we tested the effects of paired-aggression(no density effect)of Brandt’s voles on OT/AVP system under laboratory conditions.We hypothesized that high density would increase aggression among animals which would then increase AVP but reduce OT in brains of animals.Our results showed that high housing density induced more aggressive behavior.We found high-densityinduced social stress(with or without physical contact)and direct aggression significantly increased expression of mRNA and protein of AVP and its receptor,but decreased expression of mRNA and protein of OT and its receptor in specific brain regions of voles.The results suggest that density-dependent change of OT/AVP systems may play a significant role in the population regulation of small rodents by altering density-dependent aggressive behavior.

关键词： aggression behavior density-dependent stress oxytocin(OT) social stress vasopressin(AVP)

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习近平关于文明交流互鉴重要论述的生成逻辑、主要意蕴及时代价值

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思想教育研究 2021年第6期 13-17页

作者：万欣荣陈鹏中山大学马克思主义学院广东广州510275

当今世界,不同文明能否交流互鉴关乎人类社会的前途与命运。党的十八大以来,习近平基于马克思主义文明观,围绕文明交流互鉴发表了一系列重要论述与独特见解,是历史呼唤、现实反思、理论延续、实践借鉴的有机统一,有效回应了构建新型文... 详细信息

当今世界,不同文明能否交流互鉴关乎人类社会的前途与命运。党的十八大以来,习近平基于马克思主义文明观,围绕文明交流互鉴发表了一系列重要论述与独特见解,是历史呼唤、现实反思、理论延续、实践借鉴的有机统一,有效回应了构建新型文明观的时代诉求。文明交流互鉴以平等互尊、开放包容、互学互鉴、合作共赢为主要内涵,作为世界文明交往范式的"中国方案",不仅是对西方"文明冲突论"的批判和超越,还是应对现代风险社会的伟大构想。

关键词：文明交流互鉴文明冲突论马克思主义文明观中国方案

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Anti-fertility effect of levonorgestrel and quinestrol in Brandt’s voles(Lasiopodomys brandtii)

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Integrative Zoology 2007年第4期2卷 260-268页

作者： Meirong ZHAO Ming LIU Dong LI Xinrong WAN Lyn A.HINDS Yanling wanG Zhibin ZHANG State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina State Key Laboratory of Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijingChina CSIRO Entomology CanberraAustralian Capital TerritoryAustralia

The combination of levonorgestrel and quinestrol(EP-1)has been shown to have anti-fertility effects on several wild rodents,but the mechanism underlying these effects is poorly understood.We investigated the effects of EP-1 and each of its components,levonorgestrel(P)and quinestrol(E),on the fertility of Brandt’s voles(Lasiopodomys brandtii)by using a gastric gavage method.The doses for EP-1,E and P were 1,0.34 and 0.66 mg/kg body weight,respectively.Male voles(n=98)were treated daily for 5 or 14 days,then the testes and epididymides were collected,weighed and examined histologically at 30(D30),60(D60)or 90(D90)days after the end of treatment.Four males were allowed to mate with normal females at D90.Female voles(n=75)were treated for 3 days and a further 3 days after a 7-day interval.The uteri and ovaries were weighed and examined histologically at 15(D15),30(D30)or 75(D75)days after the end of treatment.Each of three females were mated with fertile males at D30 and D75,respectively.Our results indicated that quinestrol(E)significantly decreased the sperm numbers in the testes as well as the weight of the testes and epididymides,with both of these tissues showing obvious structural abnormalities,and significantly reduced the litter size and the pup weight for females mated with males of the E treatment group.For female voles,treatment with E,P or EP-1 resulted in no marked influence on the fertility status.These data indicate that quinestrol(E)alone has a significant anti-fertility effect on male Brandt’s voles,but is ineffective in combination with levonorgestrel(P).

关键词： Brandt’s voles(Lasiopodomys brandtii) fertility control levonorgestrel quinestrol.

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Increased intracellular calcium concentration causes electrical turbulence in guinea pig ventricular myocytes

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Science China(Life Sciences) 2011年第3期54卷 240-247页

作者： FAN xinrong MA JiHua wan Wei ZHANG PeiHua wanG Chao WU Lin Cardio-Electrophysiological Research Laboratory Medical College of Wuha~ University of Science and Technology Wuhan 430081 China Department of Biology Gilead Sciences Inc. Palo Alto California 94304 USA Department of Cardiology Renmin Hospital of Wuhan University Wuhan 430060 China

Dysregulation of intracellular Ca2+ homeostasis is associated with various pathological conditions and arrhythmogenesis of the heart.The objective of this study was to investigate the effects of an acute increase in intracellular Ca2+ concentration ([Ca2+] i) on the electrophysiology of ventricular myocytes by mimicking intracellular Ca 2+ overload.The [Ca2+] i was clamped to either a controlled (65-100 nmol L-1) or increased (1 μmol L-1) level.The transmembrane action potentials and ionic currents were recorded using whole-cell patch clamp techniques.We found that the acute increase in [Ca2+] i shortened the action potential duration,reduced the action potential amplitude,maximum depolarization velocity and resting membrane potential,caused delayed after-depolarizations (DADs),and triggered activity--compared with these parameters in the control.The increased [Ca2+] i augmented late I Na in a time-dependent manner,reduced ICaL and IK1,and increased IKr but not IKs.The results of this study can be used to explain calcium overload-induced ventricular arrhythmias.

关键词：细胞内钙钙离子浓度心室肌全细胞膜片钳技术豚鼠电动动作电位心律失常

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“国家治理”与“公共精神”内在关联的深刻思考——读《国家治理视域下公共精神建设研究》

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江西广播电视大学学报 2020年第4期22卷 95-96页

作者：万欣荣中山大学马克思主义学院广东中山510275

公共精神作为国家治理能力中最为能动的要素,它的生成既有利于增强社会自主性,也有利于提升国家权威性和市场自律性,促进现代国家治理中政府主导和社会自治的协同共进,塑造国家、市场和社会的和谐共鸣和良性互动。可见,现代国家治理是... 详细信息

公共精神作为国家治理能力中最为能动的要素,它的生成既有利于增强社会自主性,也有利于提升国家权威性和市场自律性,促进现代国家治理中政府主导和社会自治的协同共进,塑造国家、市场和社会的和谐共鸣和良性互动。可见,现代国家治理是一种内含"公共性"的公共治理。

关键词：公共精神国家治理能力社会自主性公共治理内在关联现代国家治理深刻思考协同共进

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