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RNA viromes of Dermacentor nuttalli ticks reveal a novel uukuvirus in Qinghai Province,China

Virologica Sinica 2024年第4期39卷 537-545页

作者： Yaohui Fang Jun Wang Jianqing Sun Zhengyuan Su Shengyao Chen Jian Xiao Jun Ni Zhihong Hu Yubang He Shu Shen Fei Deng Key Laboratory of Special Pathogens and Biosafety and national Virus Resource Center Wuhan Institute of VirologyChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 101408China Qinghai lake national nature reserve Administration Xining 810000China Hubei Jiangxia Laboratory Wuhan 430200China Xinjiang Key Laboratory of Vector-borne Infectious Diseases Urumqi830002China

Ticks are a major parasite on the Qınghai-Tibet Plateau,western China,and represent an economic burden to agriculture and animal *** research on tick-borne pathogens that threaten humans and animals,the viromes of dominant tick species in this area remain *** this study,we collected Dermacentor nuttalli ticks near Qınghai lake and identified 13 viruses belonging to at least six families through metagenomic *** viruses were of high abundance in pools,including Xınjiang tick-associated virus 1(XJTAV1),and three novel viruses:Qınghai lake virus 1,Qınghai lake virus 2(QHLV1,and QHLV2,unclassified),and Qınghai lake virus 3(QHLV3,genus Uukuvirus of family Phenuiviridae in order Bunyavirales),which lacks the M *** minimum infection rates of the four viruses in the tick groups were 8.2%,49.5%,6.2%,and 24.7%,respectively,suggesting the prevalence of these viruses in *** ticks.A putative M segment of QHLV3 was identified from the next-generation sequencing data and further characterized for its signal peptide cleavage site,N-glycosylation,and transmembrane ***,we probed the L,M,and S segments of other viruses from sequencing data of other tick pools by using the putative M segment sequence of *** revealing the viromes of *** ticks,this study enhances our understanding of tick-borne viral communities in highland *** putative M segment identified in a novel uukuvirus suggests that previously identified uukuviruses without M segments should have had the same genome organization as typical *** findings will facilitate virus discovery and our understanding of the phylogeny of tick-borne uukuviruses.

关键词： Dermacentor nuttalli Qınghai Province Virome Uukuvirus M segment

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Arbuscular mycorrhizal fungi-mediated resistance to salt spray in Cinnamomum camphora seedlings enhanced by leaf functional traits

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Soil Ecology Letters 2024年第3期6卷 163-175页

作者： Xiao Li Duo Zheng Naili Zhang Lijia Dong Aiping Wu Qiqian Wu Hua Liu Mingshui Zhao Yan Li Xinping Wang Yanhong Wang State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China State Key Laboratory of Efficient Production of Forest Resources and the Key Laboratory of Silviculture and Conservation of Ministry of Education Beijing Forestry UniversityBeijing 100083China School of Life and Environmental Sciences Shaoxing UniversityShaoxing 312000China Ecology Department College of Environment and EcologyHunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake AreaHunan Agricultural UniversityChangsha 410128China Zhejiang Tianmu Mountain national nature reserve Administration Hangzhou 311311China

Salt spray is a natural disturbance in coastal *** mycorrhizal fungi(AMF)are recognized as bio-ameliorators of soil salinity in ***,the mechanism through which AMF protects Cinnamomum camphora against aerial salinity remains *** address this knowledge gap,plants were subjected to four fungal regimes,namely sterilized fungal inoculum,Glomus tortuosum,Funneliformis mosseae,or a combination of these two fungi,and exposed to three sprayed-salt regimes(0,7,or 14 mg NaCl cm−2 d−1)in a *** spray significantly decreased photosynthetic capabilities,total dry weight,and salinity tolerance of non-mycorrhizal *** inoculation,particularly a combination of *** and ***,evidently mitigated the detrimental effects induced by salt ***,mycorrhiza-mediated protection depended on the intensity of sprayed salt and the identity of fungal ***,the enhanced resistance of mycorrhizal *** seedlings to aerial salinity was mainly owing to increased leaf thickness and photosynthetic *** findings imply that inoculation with combined fungi could be an optimal strategy for cultivating *** plants in coastal *** results gained hold the potential to offer both theoretical and practical guidance for the managers of coastal ecosystems in soil restoration and conservation.

关键词： arbuscular mycorrhizal fungi leaf thickness photosynthetic capability salinity-tolerance salt spray

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Organising a juvenile ratio monitoring programme for 10 key waterbird species in the Yangtze River floodplain:analysis and proposals

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Avian Research 2021年第4期12卷 645-657页

作者： Yuxi Wang Iderbat Damba Qingshan Zhao Yanbo Xie Xueqing Deng Rdi Ga Guanhua Liu Zhiwen Xu Yue Li Dali Gao Wenbin Xu Guoxun Chen Lei Cao School of Life Science University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Urban and Regional Ecology Research Center for Eco Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Institute of Biology Mongolian Academy of SciencesUlaanbaatar 13330Mongolia Department of Modern Physics University of Science and Technology of ChinaHefei 230026China College of Life Sci-ence and Technology Inner Mongolia Normal UniversityHuhehaote 010000China Jiangxi Poyang lake national reserve authority Nan Chang 330038China authority of Jiangxi Duchang Provincial Natural reserve Duchang 332600China authority of East Dongting lake national nature reserve Yueyang 414000China Anhui Shengjin lake national reserve Author-ity Dongzhi 247000China authority of longgang lake national nature reserve Huanggang 435500China

Background:In the face of continued degradation and loss of wetlands in the Yangtze River floodplain(YRF),there is an urgent need to monitor the abundance and distribution of wintering *** understand fully observed annual changes,we need to monitor demographic rates to understand factors affecting global population *** reproduction success contributes to dynamic changes in population size and age structure,so an assessment of the juvenile ratio(*** winter birds as a proportion of total number aged)of overwintering waterbirds can be an important indicator of the reproductive success in the preceding breeding ***:During 2016-2019,we sampled juvenile ratios among 10 key waterbird species from the wetlands in the *** on these data,we here attempt to establish a simple,efficient,focused and reliable juvenile ratio monitoring scheme,to assess consistently and accurately relative annual breeding success and its contribution to the age structure among these waterbird ***:We compared juvenile ratio data collected throughout the winter and found that the optimal time for undertaking these samples was in the early stages of arrival for migratory waterbirds reaching their wintering area(early to mid-December).We recommend counting consistently at key points(*** where>1%biogeographical flyway population were counted)at sites of major flyway importance(Poyang lake,East Dongting lake,Shengjin lake,Caizi lake,Longgan lake and Chen lake).Based on this,the error rate of the programme(155 planned points,the count of 10 waterbird species is 826-8955)is less than 5%.Conclusions:We established a juvenile ratio monitoring programme for 10 key waterbird species in the wetlands of the YRF,and discuss the feasibility and necessity of implementing such a future programme,and how to use these data in our monitoring and understanding of the population dynamics of these waterbird populations.

关键词： Juvenile ratio Monitoring scheme The Yangtze River floodplain Statistical independence

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Bird Species Diversity and Spatio-temporal Variation in the Sihong Hongze lake Wetland national nature reserve in Eastern China

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Journal of Resources and Ecology 2024年第4期15卷 826-837页

作者： HU Huali XIAO Lihui ZHANG Manyu WANG Silu CHEN Taiyu LU Changhu College of Life Science Nanjing Forestry UniversityNanjing 210037China Eastern Hongze lake Wetland Natural reserve HuaianJiangsu 223100China Institute of Wildlife Conservation Jiangxi Academy of ForestryNanchang 330037China

As an important hub on the East Asian-Australian Flyway(EAAF),Hongze lake is an important migratory stopover and wintering site for hundreds of thousands of ***,research on bird community diversity in this area is still *** conducted a bird survey from July 2020 to June 2021 using the line transect method on the terrestrial habitat,as well as the fixed-point method in the lake wetland at the Sihong Hongze lake Wetland national nature reserve located in northwestern Hongze lake,and analyzed the temporal-spatial variation in the bird *** results showed that a total of 170432 detections of 215 bird species belonging to 18 orders and 55 families were *** terms of species composition,the proportion of terrestrial birds was relatively high,followed by waterfowl richness,with high numbers of Anatidae species and *** bird species abundance,waterfowl had the highest abundance of common coot(Fulica atra),belonging to the Rallidae family,followed by Anatidae and Ardeidae *** abundance of shorebirds was extremely low,and that of non-waterfowl was also *** terms of temporal patterns,the number of bird species and richness index were higher in spring and autumn but lower in winter and *** bird abundance was the highest in winter,and the remaining three seasons were similar in terms of bird *** diversity index and evenness index were higher in spring,summer and autumn,and lowest in *** the spatial pattern,the open water in the western part of the reserve included the most densely distributed areas for birds,and the number of bird species and their abundance were both the highest in that *** were significant differences in the bird community structures among the four *** species number and richness index of birds in the reed habitat were the highest,and the bird abundance was also high,but the diversity index and evenness index were *** the bird abundance in the lake habitat wa

关键词： bird diversity seasonal variation spatial distribution Sihong Hongze lake Wetland national nature reserve

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Migration routes of the endangered Oriental Stork(Ciconia boyciana)from Xingkai lake,China,and their repeatability as revealed by GPS tracking

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Avian Research 2023年第2期14卷 215-222页

作者： Zeyu Yang Lixia Chen Ru Jia Hongying Xu Yihua Wang Xuelei Wei Dongping Liu Huajin Liu Yulin Liu Peiyu Yang Guogang Zhang Key Laboratory of Forest Protection of national Forestry and Grassland Administration National Bird Banding Center of ChinaEcology and Nature Conservation InstituteChinese Academy of ForestryBeijing100091China Xingkai lake national nature reserve of Heilongjiang JixiHeilongjiang158300China

The Oriental Stork(Ciconia boyciana)is listed as'Endangered'on the International Union for the Conservation of nature(IUCN)Red List of Threatened Species and is classified as a first category nationally protected bird species in *** this species'seasonal movements and migration will facilitate effective conservation to promote its *** tagged 27 Oriental Stork nestlings at Xingkai lake on the Sanjiang Plain in Heilongjiang Province,China,used GPS tracking to follow them over the periods of 2014-2017 and 2019-2022,and confirmed their detailed migratory routes using the spatial analysis function of ArcGIS *** discovered four migration routes during autumn migration:one common long-distance migration route in which the storks migrated along the coastline of Bohai Bay to the middle and lower reaches of the Yangtze River for wintering,one short-distance migration route in which the storks wintered in Bohai Bay and two other migration routes in which the storks crossed the Bohai Strait around the Yellow River and wintered in South *** were no significant differences in the number of migration days,residence days,migration distances,number of stopovers and average number of days spent at stopover sites between the autumn and spring migrations(P>0.05).However,the storks migrated significantly faster in spring than in autumn(P=0.03).The same individuals did not exhibit a high degree of repetition in their migration timing and route selection in either autumn or spring *** storks from the same nest exhibited considerable between-individual variation in their migration *** important stopover sites were identified,especially in the Bohai Rim Region and on the Songnen Plain,and we further explored the current conservation status at these two important ***,our results contribute to the understanding of the annual migration,dispersal and protection status of the endangered Oriental Stork and provide a scientific bas

关键词： Autumn migration GPS tracking Oriental stork Repeatability Spring migration Stopover site

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Seasonal changes in the number of Relict Gull (Larus relictus) at Ebinur lake, Western China

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Journal of Arid Land 2010年第2期2卷 151-155页

作者： Kedeerhan BAYAHEN Administrative Bureau of the national nature reserve in the Ebinur Wetland

The Relict Gull(Larus relictus) is recognized as a vulnerable species,with a worldwide population of about 6,000 *** inhabiting the extreme arid regions of Central Asia,their migratory routes and winter grounds are *** research focused on distribution sites,habitat,behavior,population size and seasonal changes of Relict *** transects and point counts in every month were used to investigate the gulls around the Ebinur *** result showed Relict Gull was summer visitor to Xinjiang,Western *** curve with a single peak was *** gull appeared in early April and was 63 individuals(1% of the global population).The number remained stable from May to July in *** discovery of fledglings indi-cates that Relict Gull may breed *** left Ebinur lake in *** Gull in Ebinur lake should belong to the Central Asian subpopulation,which was the most westerly record in China.

关键词： Relict Gull(Larus relictus) population seasonal change Ebinur lake Central Asia

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Temporal-spatial patterns of intestinal parasites of the Hooded Crane(Grus monacha) wintering in lakes of the middle and lower Yangtze River floodplain

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Chinese Birds 2014年第1期5卷 40-48页

作者： Wei Huang Lizhi Zhou Niannian Zhao Institute of Biodiversity and Wetland Ecology School of Resources and Environmental Engineering Anhui University Anhui Provincial Species Information Center Anhui Shengjin lake national nature reserve

Background: Parasites have adverse effects on the life and survival of many migratory waterbirds, especially birds on the endangered species list. Hooded Cranes are large migratory colonial waterbirds wintering in wetlands,which are prone to parasite infection, thus monitoring the diversity of parasites is important for sound wetland management and protection of this ***: From November 2012 to April 2013, we collected 821 fresh faecal samples from the three lakes(Poyang,Caizi and Shengjin lake) in the lower and middle Yangtze River floodplain, and detected with saturated brine floating and centrifugal sedimentation methods. Parasite eggs were quantified with a modified Mc Master's counting ***: In this study, 11 species of parasites were discovered, i.e., two coccidium(Eimeria gruis, E. reichenowi), five nematodes(Capillaria sp., Strongyloides sp., Ascaridia sp., Trichostrongylus sp., Ancylostomatidae), three trematodes(Echinostoma sp., Echinochasmus sp., Fasciolopsis sp.) and one cestode(Hymenolepis sp.). About 57.7% of the faecal samples showed parasitic infection. All species of parasites were found at the three sites except Hymenolepis which was not found at Poyang lake. While most samples were affected by only one or two species of parasites, infection by Eimeria spp. was the most common(53.1%). From One-Way ANOVA analysis of the three lakes, parasite species richness index(p = 0.656), diversity index(p = 0.598) and evenness index(p = 0.612) showed no significant difference. According to the statistical analysis of our data, there were no significant difference in parasite species richness index(p = 0.678) and evenness index(p = 0.238) between wintering periods, but a strong difference in diversity index(p < 0.05).Conclusions: Our study suggests that in the wintering Hooded Crane populations, parasite diversity is more sensitive to changes in the overwintering periods than to locations. This also indicates that with the limitations of mig

关键词： Hooded Crane Wintering population Migratory waterbirds Faecal parasite Parasite diversity

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Effect of water level fluctuations on temporal-spatial patterns of foraging activities by the wintering Hooded Crane(Grus monacha)

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Chinese Birds 2015年第3期6卷 169-177页

作者： Dongmei Zhang Lizhi Zhou Yunwei Song School of Resources and Environmental Engineering Anhui University Institute of Biodiversity and Wetland Ecology Anhui University Anhui Biodiversity Information Center Shengjin lake national nature reserve of Anhui Province

Background:The Yangtze River floodplain provides important wintering habitats for Hooded Cranes(Grus monacha) in *** in the water level change foraging habitat and food availability,affecting their temporal-spatial patterns of foraging *** is of considerable importance to investigate the effect of these fluctuations on food availability for wintering Hooded Cranes and their foraging response to these *** their behavior patterns is beneficial in protecting the wintering crane population and restoring their wintering ***:A field survey of the winter behavior of cranes was carried out at Shengjin lake from November in 2013 to April in *** variables,as well as the spatial distribution and behavior patterns of wintering cranes at their foraging sites during five stages of water level fluctuation were *** on this data we analyzed the relationship of foraging behavior relative to water level fluctuations and habitat ***:The foraging habitats used by Hooded Cranes varied at the different water level *** the water level decreased,the use of meadows and mudflats *** the water dropped to its lowest level,the use by the Hooded Crane in the mudflats reached a *** were statistically significant differences in time budget in the three types of habitats over the five stages of the water *** the mudflats,the foraging behavior and maintenance behavior varied significantly with the water level,while the alert behavior showed little *** of a generalized linear model showed that the five water level stages and three habitat types had a significant effect on foraging behavior,while the combined effect of these two variables was significant on the foraging time budget and the length of foraging activity of the Hooded ***:With the decrease in the water level,the use of mudflats by Hooded Cranes increased *** availability in differ

关键词： Water level fluctuations Foraging activity Temporal-spatial pattern Hooded Crane Grus monacha

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The effects of food abundance and disturbance on foraging flock patterns of the wintering Hooded Crane(Grus monacha)

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Chinese Birds 2015年第3期6卷 178-185页

作者： Ling Yang Lizhi Zhou Yunwei Song School of Resources and Environmental Engineering Anhui University Institute of Biodiversity and Wetland Ecology Anhui University Anhui Biodiversity Information Center Shengjin lake national nature reserve of Anhui Province

Background:Food abundance and availability affect flock patterns of foraging *** and risk tradeoffs are especially critical for flocks of wintering waterbirds foraging in lake *** losing suitable habitats face insufficient food supplies and high levels of disturbance,affecting their foraging *** objective was to study the effects of food abundance and disturbances on flock size and the structure of Hooded Crane flocks wintering at Shengjin lake and,as well,to understand the response of wintering waterbirds to habitat degradation for future management decisions and protection of the ***:We investigated food abundance,disturbances and flock foraging activities of the wintering Hooded Crane in several foraging habitats of Shengjin lake from November 2013 to April *** size and structure were observed by scan *** on food abundance and disturbances were collected by *** size and structure were compared among three wintering *** relationship between food resources,disturbances and flock size were illustrated using a generalized linear ***:In the early and middle wintering periods,the Hooded Crane used paddy fields as its major foraging habitat,where the number of foraging birds and flocks were the *** the late period,the cranes took to meadows as their major foraging *** variation among foraging flock was mainly embodied in the size of the flocks,while the age composition of these flocks did not change *** flocks were notably different from flock groups in size and age *** results of a generalized linear model showed that the food abundance had a marked effect on foraging flock size and age composition,while disturbances had a significant effect only on flock *** our analysis,it appeared that the combined effect of the two variables was significant on the size of the foraging flock,but had less impact on age ***

关键词： Flock pattern Food abundance Disturbance Hooded crane

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Shifts in foraging behavior of wintering Hooded Cranes(Grus monacha) in three different habitats at Shengjin lake, China

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Chinese Birds 2016年第3期7卷 167-173页

作者： Wenjing Wan Lizhi Zhou Yunwei Song School of Resources and Environmental Engineering Anhui University Institute of Biodiversity and Wetland Ecology Anhui University Anhui Biodiversity Information Center Shengjin lake national nature reserve of Anhui Province

Background: Wetland loss and degradation result in a reduction in the availability and quality of food for wintering waterbirds. Birds normally modify their foraging behavior to adapt to variations in food availability. In this study, we compared shifts in foraging behavior of Hooded Cranes(Grus monacha) in three different habitats at Shengjin lake, China to understand the response of these cranes to changes in ***: We investigated the food density and foraging behavior of Hooded Cranes in Shengjin lake national nature reserve from November 2014 to April 2015. We used regression equations to describe the changes in food density. A total of 397 behavioral observations were used in the analyses of their foraging efforts. We fitted a candidate set of generalized mixed linear models to analyze the relationship of foraging efforts and food density. We used a method of information theory to guide the selection of the model and Akaike's Information Criterion to calculate the value of each model. The relationship between food density, disturbances and foraging behavior was illustrated using a generalized linear ***: Along with the temporal variation and exploitation of food biomass, the food density varied widely among foraging sites. During the early winter period, foraging efforts were more pronounced in the paddy fields and meadows but not significantly different among the three habitats. The cranes spent more foraging effort in the paddy fields and meadows during the middle stage and in the meadows and mudflats during the late winter. The results of the generalized linear model showed that food density and disturbances had different effects on the rate of foraging success during the winter, while the effect of foraging effort was not significant. Furthermore, the rate of feeding success was markedly affected by disturbances in the paddy fields. The combined action of food density and disturbances had a significant effect on the rate of foraging suc

关键词： Food density Foraging behavior Habitat quality Hooded Crane

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