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Developing fertility control for rodents: a framework for researchers and practitioners

Integrative Zoology 2024年第1期19卷 87-107页

作者： Giovanna MASSEI Jens JACOB Lyn A.HINDS Botstiber Institute for Wildlife Fertility Control Department of Environment and GeographyUniversity of YorkHeslingtonYorkUK Rodent research Institute for Epidemiology and Pathogen DiagnosticsJulius Kühn–Institute(JKI)Federal Research Institute for Cultivated PlantsMünsterGermany CSIRO Health and Biosecurity CanberraACTAustralia

Fertility control is often heralded as a humane and effective technique for management of overabundant wildlife,including *** intention is to reduce the use of lethal and inhumane methods,increase farm productivity and food security as well as reduce disease transmission,particularly of *** developed a framework to guide researchers and stakeholders planning to assess the effectiveness of a potential contraceptive agent for a particular *** guidelines describe the overarching research questions which must be sequentially addressed to ensure adequate data are collected so that a contraceptive can be registered for use in broad-scale rodent *** framework indicates that studies should be undertaken iteratively and,at times,in parallel,with initial research being conducted on(1)laboratory-based captive assessments of contraceptive effects in individuals;(2)simulation of contraceptive delivery using bait markers and/or surgical sterilization of different proportions of afield-based or enclosure population to determine how population dynamics are affected;(3)development of mathematical models which predict the outcomes of different fertility control scenarios;and(4)implementation of large-scale,replicated trials to validate contraceptive efficacy under various management-scalefield *** some circumstances,fertility control may be most effective when integrated with other methods(*** culling).Assessment of non-target effects,direct and indirect,and the environmental fate of the contraceptive must also be *** fertility control for a species is a resource-intensive commitment but will likely be less costly than the ongoing environmental and economic impacts by rodents and rodenticides in many contexts.

关键词： captive studies field applications modeling oral contraceptive delivery population management rodents

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Small mammal community composition impacts bank vole (Clethrionomys glareolus) population dynamics and associated seroprevalence of Puumala orthohantavirus

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Integrative Zoology 2024年第1期19卷 52-65页

作者： Felicitas Maria BUJNOCH Daniela REIL Stephan DREWES Ulrike MROSENFELD Rainer G.ULRICH Jens JACOB Christian IMHOLT Julius Kühn-Institute Federal Research Centre for Cultivated PlantsInstitute for Epidemiology and Pathogen DiagnosticsRodent ResearchMünsterGermany University of Münster Institute for Evolution and BiodiversityMünsterGermany Friedrich-Loeffler-Institut Federal Research Institute for Animal HealthInstitute of Novel and Emerging Infectious DiseasesGreifswald-Insel RiemsGermany

Rodents are important reservoirs for zoonotic pathogens that cause diseases in *** is hypoth-esized to be closely related to pathogen prevalence through multiple direct and indirect *** example,the presence of non-host species can reduce contact rates of the main reservoir host and thus reduce the risk of transmission(“dilution effect”).In addition,an overlap in ecological niches between two species could lead to increased interspecific competition,potentially limiting host densities and reducing density-dependent pathogen transmission *** this study,we investigated the relative impact of population-level regulation of direct and indirect drivers of the prevalence of Puumala orthohantavirus(PUUV)in bank voles(Clethrionomys glareolus)during years with high *** compiled data on small mammal community composition from four regions in Germany between 2010 and *** equation modeling revealed a strong seasonality in PUUV control mechanisms in bank *** abundance of shrews tended to have a negative relationship with host abundance,and host abundance positively influenced PUUV seroprevalence,while at the same time increasing the abundance of competing non-hosts like the wood mouse(Apodemus sylvaticus)and the yellow-neckedfield mouse(Apodemusflavicollis)were associated with reduced PUUV seroprevalence in the *** results indicate that for PUUV in bank voles,dilution is associated with increased interspecific *** pressures leading to the decline of Apodemus *** a specific habitat could lead to the amplification of mechanisms promoting PUUV transmission within the host populations.

关键词： bank vole biodiversity Puumala orthohantavirus small mammals

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The transcriptional landscape of the developmental switch from regular pollen maturation towards microspore-derived plant regeneration in barley

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The Crop Journal 2024年第4期12卷 1064-1080页

作者： Anna Nowicka Martin Kovacik Anna Maksylewicz Przemysław Kopec Ewa Dubas Monika Krzewska Agnieszka Springer Robert E.Hoffie Diaaeldin S.Daghma Zbynek Milec Ales Pecinka Jochen Kumlehn Iwona Zur The Franciszek Górski Institute of Plant Physiology Polish Academy of Sciences Niezapominajek 2130-239 KrakówPoland Institute of Experimental Botany of the Czech Academy of Sciences Centre of Plant Structural and Functional GenomicsŠlechtitelu3177900 OlomoucCzech Republic Department of Cell Biology and Genetics Faculty of SciencePalacky UniversityŠlechtitelu°2777900 OlomoucCzech Republic Malopolska centre of Biotechnology Jagiellonian University30-387 KrakówPoland Leibniz Institute of Plant Genetics and Crop Plant research(IPK)Gatersleben Corrensstraße 306466 Stadt SeelandGermany Institute for Breeding research on Horticultural Crops Julius Kühn Institute(JKI)-Federal Research Centre for Cultivated PlantsErwin-Baur Straße 2706484 QuedlinburgGermany Global Change research Institute Czech Academy of Sciences Beˇlidla 986/4a60300 BrnoCzech Republic

Plant formation from in vitro-cultivated microspores involves a complex network of internal and environmental ***/doubled haploids(DHs)derived from in vitro-cultured microspores are widely used in plant breeding and genetic ***,the mechanism underlying the developmental switch from regular pollen maturation towards microspore-derived plant regeneration remains poorly ***,RNA-sequencing was employed to elucidate the transcriptional landscapes of four early stages of microspore embryogenesis(ME)in barley cultivars Golden Promise and Igri,which exhibit contrasting responsiveness to microspore-derived plant *** experiments revealed fundamental regulatory networks,specific groups of genes,and transcription factor(TF)families potentially regulating the developmental *** identified a set of candidate genes crucial for genotype-dependent responsiveness/recalcitrance to *** high-resolution temporal transcriptome atlas provides an important resource for future functional studies on the genetic control of microspore developmental transition.

关键词： Hordeum vulgare Marker gene Microspore embryogenesis Stress response Transcriptome analysis

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The carrot monoterpene synthase gene cluster on chromosome 4 harbours genes encoding flavour-associated sabinene synthases

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Horticulture research 2020年第1期7卷 69-81页

作者： Sven Reichardt Holger Budahn Dominic Lamprecht David Riewe Detlef Ulrich Frank Dunemann Lilya Kopertekh Julius Kühn-Institut(jki)-federal research centre for cultivated plants D-06484 QuedlinburgGermany

In plants,low molecular weight terpenes produced by terpene synthases(TPS)contribute to multiple ecologically and economically important *** present study investigates a carrot terpene synthase gene cluster on chromosome 4 associated with volatile monoterpene *** carrot mutants,yellow and cola,which are contrasting in the content of low molecular weight terpenes,were crossed to develop an F2 mapping *** mapping analysis revealed overlapping QTLs on chromosome 4 for sabinene,α-thujene,α-terpinene,γ-terpinene,terpinen-4-ol and *** genomic region of this locus includes a cluster of five terpene synthase genes(DcTPS04,DcTPS26,DcTPS27,DcTPS54 and DcTPS55).DcTPS04 and DcTPS54 displayed genotype-and tissue-specific variation in gene *** on the QTL mapping results and the gene expression patterns,DcTPS04 and DcTPS54 were selected for functional *** vitro enzyme assays showed that DcTPS54 is a single-product enzyme catalysing the formation of sabinene,whereas DcTPS04 is a multiple-product terpene synthase producingα-terpineol as a major product and four additional products including sabinene,β-limonene,β-pinene and ***,we developed a functional molecular marker that could discriminate carrot genotypes with different sabinene content in a set of 85 accessions.

关键词： cluster volatile mapping

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Ethyl-iophenoxic acid as a quantitative bait marker for small mammals

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Integrative Zoology 2022年第6期17卷 981-990页

作者： Kyra JACOBLINNERT Christian IMHOLT Detlef SCHENKE Jens JACOB Julius Kühn Institute(jki) Federal Research Centre for Cultivated PlantsInstitute for Plant Protection in Horticulture and ForestsVertebrate ResearchMünsterGermany Department of Behavioral Biology University of OsnabrückOsnabrückGermany Julius Kühn Institute(jki) Federal Research Centre for Cultivated PlantsInstitute for Ecological ChemistryPlant Analysis and Stored Product ProtectionBerlinGermany

Bait markers are indispensable for ecological research but in small mammals,most markers are invasive,expensive and do not enable quantitative analyses of ***-iophenoxic acid(Et-IPA)is a non-toxic,quantitative bait marker,which has been used for studying bait uptake in several carnivores and *** developed a bait with Et-IPA,assessed its palatability to common voles(Microtus arvalis),and determined the dose-residue-relation for this important agricultural pest rodent ***-IPA concentrations of 40 to 1280μg Et-IPA per g bait were applied to wheat using sunﬂower oil or polyethylene glycol 300 as potential *** a laboratory study,common voles were offered the bait and blood samples were collected 1,7,and 14 days after *** samples were analyzed with LC-ESI-MS/MS for blood residues of ***ﬂower-oil was the most suitable bait ***-IPA seemed to be palatable to common voles at all test ***-dependent residues could be detected in blood samples in a dose-dependent manner and up to 14 days after uptake enabling generation of a calibration curve of the dose-residue ***-IPA was present in common vole blood for at least 14 days,but there was dissipation by 33–37%depending on ***-IPA meets many criteria for an“ideal”quantitative bait marker for use in futureﬁeld studies on common voles and possibly other small mammal species.

关键词： baiting biomarker Microtus arvalis quantitative bait marker small mammals

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A small number of male-biased candidate pheromone receptors are expressed in large subsets of the olfactory sensory neurons in the antennae of drones from the European honey bee Apis mellifera

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Insect Science 2022年第3期29卷 749-766页

作者： Joerg Fleischer Alexander Rausch Kathrin Dietze Silvio Erler Sina Cassau Jurgen Krieger Martin Luther University Halle-Wittenberg Institute of Biologyl ZoologyDepartment of Animal PhysiologyHalle(Saale) Institute for Bee Protection Julius Kuhn Institute(JKI)-Federal Research Centre for Cultivated PlantsBraunschweigGermany

In the European honey bee(Apis mellifera),the olfactory system is essential for foraging and intraspecific communication via *** bees are equipped with a large repertoire of olfactory receptors belonging to the insect odorant receptor(OR)*** studies have indicated that the transcription level of a few OR types including OR11,a receptor activated by the queen-released pheromone compound(2£)-9-oxodecenoic acid(9-ODA),is significantly higher in the antenna of males(drones)than in female ***,the number and distribution of antennal cells expressing male-biased ORs is ***,we analyzed antennal sections from bees by in situ hybridization for the expression of the male-biased receptors OR11,OR18,and *** results demonstrate that these receptors are expressed in only moderate numbers of cells in the antennae of females(workers and queens),whereas substantially higher cell numbers express these ORs in ***,the reported male-biased transcript levels are due to sex-specific differences in the number of antennal cells expressing these *** analyses for OR11 and OR18 in drone antennae revealed expression in two distinct subsets of olfactory sensory neurons(OSNs)that in total account for approximately 69%of the OR-positive *** high percentages of OSNs expressing given receptors are reminiscent of male-biased ORs in moths that mediate the detection of female-released sex pheromone ***,our findings indicate remarkable similarities between male antennae of bees and moths and support the concept that male-biased ORs in bee drones serve the detection of female-emitted sex pheromones.

关键词： chemosensory odorant receptor olfaction pheromone detection sensilla placodea

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Response of small rodents to manipulations of vegetation height in agro-ecosystems

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Integrative Zoology 2008年第1期3卷 3-10页

作者： Jens JACOB federal research centre for cultivated plants-Julius Kuehn Institute Vertebrate ResearchMünsterGermany

Some small mammal populations require human interference to conserve rare or threatened species or to minimizeadverse effects in plant production. Without a thorough understanding about how small rodents behave in theirenvironment and consideration of how they react to management efforts, management will not be optimal. Socialbehavior, spatial and temporal activity patterns, predator avoidance and other behavioral responses can affect pestrodent management. Some of these behavioral patterns and their causes have been well studied. However, theirimpact on pest rodent management, especially for novel management approaches, is not always clear. Habitatmanipulation occurs necessarily through land use and intentionally to reduce shelter and food availability and toincrease predation pressure on rodents. Rodents often respond to decreased vegetation height with reducedmovements and increased risk sensitivity in their feeding behavior. This seems to result mainly from an elevatedperceived predation risk. Behavioral responses may lessen the efficacy of the management because the desiredeffects of predators might be mediated. It remains largely unknown to what extent such responses can compensateat the population level for the expected consequences of habitat manipulation and how population size and cropdamage are affected. It is advantageous to understand how target and non-target species react to habitatmanipulation to maximize the management effects by appropriate techniques, timing and spatial scale withoutcausing unwanted effects at the system level.

关键词： behavior crop protection pest rodent population dynamics vegetation height

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Comparison of energy consumption and economic performance of organic and conventional soybean production——A case study from Jilin Province, China

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Journal of Integrative Agriculture 2015年第8期14卷 1561-1572页

作者： ZHANG Li-wei Til Feike Jirko Holst Christa Hoffmann Reiner Doluschitz Institute of Farm Management (410c) University of Hohenheim Institute for Strategies and Technology Assessment Julius Kühn-Institut Federal Research Centre for Cultivated Plants

Modern agriculture heavily depends on energy consumption, especially fossil energy, but intensive energy input increases the production cost for producers and results in environmental *** agricultural production is considered a more sustainable system, but there is lack of scientific research on the energy consumption between organic and conventional systems in *** analysis and comparison of energy use between the two systems would help decision-makers to establish economic, effective and efficient agricultural ***, the objectives of the present study are to analyze energy inputs, outputs, energy efficiency, and economic benefits between organic and conventional soybean（Glycine max（L.） Merrill） production.A total of 24 organic farmers and 24 conventional farmers in Jilin Province, China, were chosen for investigation in 2010 production *** energy input was 71.55 GJ ha–1 and total energy output was 96.18 GJ ha–1 in the organic system, resulting in an energy efficiency（output/input） of *** energy input was 9.37 GJ ha–1 and total energy output was 113.4 GJ ha–1 in the conventional system, resulting in the energy efficiency of *** huge discrepancy in energy inputs and respective efficiencies lies in the several times higher nutrient inputs in the organic compared to the conventional production ***, the production costs ha–1 were 33% higher, and the net income ha–1 25% lower in the organic compared to the conventional soybean production *** is recommended to improve fertilizer management in organic production to improve its energetic and economic performance.

关键词： energy consumption fossil energy economic benefit organic agriculture soybean production Jilin Province China

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Effects of saline irrigation on soil salt accumulation and grain yield in the winter wheat-summer maize double cropping system in the low plain of North China

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Journal of Integrative Agriculture 2016年第12期15卷 2886-2898页

作者： LIU Xiu-wei Til Feike CHEN Su-ying SHAO Li-wei SUN Hong-yong ZHANG Xi-ying Key Laboratory of Agricultural Water Resources Center for Agricultural Resources Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences Shijiazhuang 050021 P. R China Texas A&M AgriLife research and Extension Center Uvalde 78801 USA Julius Kühn-Institut (jki)/federal research centre for cultivated plants Institute for Strategies and Technology Assessment Kleinmachnow 14532 Germany

In the dominant winter wheat （WW）-summer maize （SM） double cropping system in the low plain located in the North China, limited access to fresh water, especially during dry season, constitutes a major obstacle to realize high crop productivity. Using the vast water resources of the saline upper aquifer for irrigation during WW jointing stage, may help to bridge the peak of dry season and relieve the tight water situation in the region. A field experiment was conducted during 2009-2012 to investigate the effects of saline irrigation during WW jointing stage on soil salt accumulation and productivity of WW and SM. The experiment treatments comprised no irrigation （T1）, fresh water irrigation （T2）, slightly saline water irrigation （T3：2.8 dS m-l）, and strongly saline water irrigation （T4：8.2 dS m-1） at WW jointing stage. With regard to WW yields and aggregated annual WW-SM yields, clear benefits of saline water irrigation （T3 ＆ T4） compared to no irrigation （T1）, as well as insignificant yield losses compared to fresh water irrigation （T2） occurred in all three experiment years. However, the increased soil salinity in eady SM season in consequence of saline irrigation exerted a negative effect on SM photosynthesis and final yield in two of three experiment years. To avoid the negative aftereffects of saline irrigation, sufficient fresh water irrigation during SM sowing phase （i.e., increase from 60 to 90 mm） is recommended to guarantee good growth conditions during the sensitive early growing period of SM. The risk of long-term accumulation of salts as a result of saline irrigation during the peak of dry season is considered low, due to deep leaching of salts during regularly occurring wet years, as demonstrated in the 2012 experiment year. Thus, applying saline water irrigation at jointing stage of WW and fresh water at sowing of SM is most promising to realize high yield and fresh irrigation water saving.

关键词： winter wheat summer maize soil salinity saline water irrigation salt balance

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Influence of Soil Moisture and Air Temperature on the Stability of Cytoplasmic Male Sterility (CMS) in Maize (Zea mays L.)

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Agricultural Sciences 2016年第2期7卷 70-81页

作者： Heidrun Bueckmann Katja Thiele Joachim Schiemann Institute for Biosafety in Plant Biotechnology Julius Kühn-Institut Federal Research Centre for Cultivated Plants (JKI) Quedlinburg Germany

Cytoplasmic male sterility (CMS) is a maternally inherited trait that suppresses the production of viable pollen. CMS is a useful biological tool for confinement strategies to facilitate coexistence of genetically modified (GM) and non-GM crops in case where it is required. The trait is reversible and can be restored to fertility in the presence of nuclear restorer genes (Rf genes) and by environmental impacts. The aim of this study was to investigate the influence of the level of irrigation on the stability of CMS maize hybrids under defined greenhouse conditions. Additionally the combination of irrigation and air temperature was studied. Three CMS maize hybrids were grown with different levels of irrigation and in different temperature regimes. Tassel characteristics, pollen production and fertility were assessed. The CMS stability was high in hot air temperatures and decreased in lower temperatures. The level of irrigation had no major effect on the level of sterility. The extent of these phenomena was depending on the genotype of CMS maize and should be known before using CMS for coexistence purposes.

关键词： Soil Moisture Air Temperature Biological Confinement Cytoplasmic Male Sterility (CMS) Genetically Modified (GM) Maize (Zea mays L.)

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