bluuebunny/crossref_metadata_2025_split huggingface dataset:
Molecular identification ofEpitrixpotato flea beetles (Coleoptera: Chrysomelidae) in Europe and North America
Authors: Germain Jean-François , Chatot Catherine , Meusnier Isabelle , Artige Emmanuelle , Rasplus Jean-Yves , Cruaud Astrid 
Published: March 2013

AbstractEpitrixspecies (Coleoptera: Chrysomelidae) feed mostly on plants from the family Solanaceae and some of them are major pests of potato crops. AllEpitrixspecies are morphologically highly similar, which makes them difficult to identify and limits their study and management. Identification of species is mostly based on the observation of the genitalia and requires a high level of expertise. Here, we propose a tool to reliably identify all developmental stages of the most economically importantEpitrixspecies feeding on potato in Europe and North America (Epitrix cucumeris, Epitrix similaris, Epitrix tuberis, Epitrix subcrinitaandEpitrix hirtipennis). We first sequenced two DNA markers (mitochondrial cytochromecoxidase I (COI) and nuclear internal transcribed spacer 2 (ITS2)) to test their effectiveness in differentiating among sixEpitrixspecies (126 specimens). Morphospecies ofEpitrixwere well-differentiated by both DNA barcodes and no mitochondrial introgression was detected. Then, we developed an RFLP-based diagnostic method and showed that unambiguous species discrimination can be achieved by using the sole restriction enzymeTaqI onCOIpolymerase chain reaction products. The tool proposed here should improve our knowledge aboutEpitrixspecies biology, distribution and host range, three capacities that are particularly important in the detection and management of these pest species. Specifically, this tool should help prevent the introduction ofE. tuberisandE. subcrinitain Europe and limit the spread of the recently introducedE. cucumerisandE. similaris, with minimal disruption to Solanaceae trade.
Impact of pest control strategies on the arthropodofauna living in bird nests built in nestboxes in pear and apple orchards
Authors: Roy Lise , Bouvier Jean-Charles , Lavigne Claire , Galès Mathieu , Buronfosse Thierry 
Published: March 2013

AbstractPesticide applications have a strong impact on biodiversity in agroecosystems. The present study aimed to assess the impact of pest control strategies on the arthropodofauna ofParus majornests built within nestboxes installed in orchards. Unlike many studied groups, these arthropod communities are not in direct contact with pesticide sprays (on account of their being sheltered by nestboxes) and are also unable to move away from the treated area. In this pilot study, we estimated the prevalence and the taxonomic and ecological diversities of arthropodofauna sampled in the nests and assessed the extent to which the whole and nest-specific arthropodofauna were affected by pest control strategies. Sixteen different insect and arachnid Primary Taxonomic Groups (PTGs, order level or below) were found in nests. The best represented PTGs (⩾10% occurrence in years 2007 and 2008) were Psocoptera (Insecta, detritivorous/saprophagous), detritivorous/saprophagous Astigmata (Acari) and hematophagous Mesostigmata (Acari). Pest control strategies had a large impact on the prevalence of arthropods in nests, with higher proportions of nests hosting arthropods in organic orchards than in conventional orchards and with intermediate proportions in nests in Integrated Pest Management orchards. In contrast, pest control strategies had no significant effect on the composition of the arthropod communities when only nests hosting nidicolous arthropods were considered.
Inferring the population structure ofMyzus persicaein diverse agroecosystems using microsatellite markers
Authors: Sanchez Juan Antonio , La-Spina Michelangelo , Guirao Pedro , Cánovas Fernando 
Published: March 2013

AbstractDiverse agroecosystems offer phytophagous insects a wide choice of host plants.Myzus persicaeis a polyphagous aphid common in moderate climates. During its life cycle it alternates between primary and secondary hosts. A spatial genetic population structure may arise due to environmental factors and reproduction modes. The aim of this work was to determine the spatial and temporal genetic population structure ofM. persicaein relation to host plants and climatic conditions. For this, 923 individuals ofM. persicaecollected from six plant families between 2005 and 2008 in south-eastern Spain were genotyped for eight microsatellite loci. The population structure was inferred by neighbour-joining, analysis of molecular variance (AMOVA) and Bayesian analyses. Moderate polymorphism was observed for the eight loci in almost all the samples. No differences in the number of alleles were observed between primary and secondary hosts or between geographical areas. The proportion of unique genotypes found in the primary host was similar in the north (0.961 ± 0.036) and the south (0.987 ± 0.013), while in the secondary host it was higher in the north (0.801 ± 0.159) than in the south (0.318 ± 0.063). Heterozygosity excess and linkage disequilibrium suggest a high representation of obligate parthenogens in areas with warmer climate and in the secondary hosts. TheFST-values pointed to no genetic differentiation ofM. persicaeon the different plant families.FST-values, AMOVA and Bayesian model-based cluster analyses pointed to a significant population structure that was related to primary and secondary hosts. Differences between primary and secondary hosts could be due to the overrepresentation of parthenogens on herbaceous plants.
PHOTOSYNTHETIC CHARACTERISTICS AND FIBRE PRODUCTION FOLLOWING DEFOLIATION INATTALEA FUNIFERAMART., ARECACEAE, GROWING UNDER FULL SUN AND FOREST UNDERSTOREY
Authors: PAMPONET THEDE CAIRES , GOMES FÁBIO PINTO , DE ALMEIDA ALEX-ALAN FURTADO , MIELKE MARCELO SCHRAMM , GOMES LUANA MAHÉ COSTA , PEDROSA ANDRESA MUNIZ 
Published: March 2013

SUMMARYThe effects of leaves cut during fibre harvesting ofAttalea funiferaunder contrasting irradiance availability were evaluated, studying defoliation-induced changes in photosynthetic and growth characteristics and fibre production in adult individuals ofA. funiferagrowing under full sun and forest understorey. Fibre harvesting was performed with or without (control plants) leaf removal twice in a 12-month interval. Maximum measured values of net photosynthesis (A), stomatal conductance and transpiration were higher in full sun defoliated palms than in non-defoliated palms in the same environment or in understorey palms of the two treatments. Non-defoliated palms from the two environments emitted more leaves than defoliated palms in the same evaluation period. The increment in the leaf-level rate of carbon assimilation following defoliation did not lead to high production of fibre, suggesting that the photosynthetic compensation for leaf removal was not effective, at least during the period of evaluation. The results indicate that leaf removal during harvesting did not represent an advantage for fibre production and may even lead to decreases in leaf and fibre production.
PRODUCTIVITY AND PROFITABILITY OF THE TRANSGENIC COTTON–WHEAT PRODUCTION SYSTEM THROUGH PEANUT INTERCROPPING AND FYM ADDITION
Authors: SINGH RAMAN JEET , AHLAWAT I. P. S. , KUMAR KULDEEP 
Published: March 2013

SUMMARYThe cotton–wheat production system (CWPS) occupies an important place in the agricultural economy of several South Asian countries. The instability of the CWPS has increased particularly during the post-transgenic hybrids phase mainly because of these hybrids calling for intensive crop management being cultivated under all situations, especially in resource-poor conditions leading to violent fluctuations during adverse years and thereby affecting the socio-economic status of these developing countries. A study was conducted to evaluate and quantify the effect of the two-tier intercropping of cotton and peanut with the substitution of a 25–50% recommended dose of nitrogen (RDN) of cotton by farmyard manure (FYM) on productivity, profitability and nitrogen economy in the CWPS at New Delhi during 2006–08. To quantify the residual effects of previous crops and their fertility levels, a succeeding crop of wheat was grown with varying rates of nitrogen, viz. 0, 50, 100 and 150 kg ha−1. Wheat equivalent productivity was significantly more with the inclusion of peanut in the CWPS (21–26%) with a high net return (US$288) than a pure stand of cotton in the CWPS. The substitution of 25% RDN of cotton by FYM being on par with no substitution recorded a higher wheat equivalent yield, nitrogen, phosphorus and potassium uptake, net return and nitrogen use efficiencies. Nitrogen economy in wheat was 22 kg ha−1due to inclusion of peanut in the CWPS and 13 kg ha−1due to substitution of the 25% RDN of cotton by FYM. The study suggested that for the success of the CWPS in South Asian countries, escalating prices of N fertilizers with environmental issues and the instability of transgenic hybrids can be overcome by using wider rows of cotton by peanut intercrop with the integrated use of both organic and inorganic sources of nitrogen.
Inheritance of leaf and stem resistance toSclerotinia sclerotiorumin a cross betweenBrassica incanaandBrassica oleraceavar.alboglabra
Authors: DISI J. O. , MEI J. , WEI D. , DING Y. , QIAN W. 
Published: March 2013

SUMMARYDeploying resistant cultivars can reduce the prohibitive cost associated with managingSclerotinia sclerotiorumin rapeseed production worldwide. The present paper reports the results of an analysis of inheritance of leaf and stem resistance involving a single inter-specific cross betweenBrassica incanaandBrassica oleraceavar.alboglabra. Detached leaves and stems of parental lines, F1, F2and the backcrosses were obtained from Southwest University, Chongqing Field Station, Chongqing China in the 2009/10 and 2010/11 field seasons and inoculated withS. sclerotiorumto determine resistance. Significant differences were detected across the two growing seasons between parents and some of the progeny for measures of both leaf and stem resistance. Continuous variation patterns among the segregating generations suggest the quantitative nature of resistance in both leaf and stem. Dominant and additive × additive epistatic interactions controlled the genetic effects for both traits. Broad- and narrow-sense heritability estimates were moderately high for leaf resistance, but were intermediate to high for stem resistance in the two field seasons. Low estimates of the minimum number of genes for leaf and stem resistance were recorded in the two field seasons. The results indicate that selection gains and the identification of quantitative trait loci can be maximized in marker-assisted-selection through differential selection (tissue-based selection) on a replicated plot basis.
Assessment of sulphur deficiency in commercial oilseed rape crops from plant analysis
Authors: SARDA X. , DIQUELOU S. , ABDALLAH M. , NESI N. , CANTAT O. , LE GOUEE P. , AVICE J. C. , OURRY A. 
Published: March 2013

SUMMARYSulphur (S) is one of the six main macroelements required to sustain the growth of plants. Sources include soil, fertilizer and atmospheric deposition, which has been reduced by 85% over the last three decades. Risks of S deficiencies are now recognized in high S-demanding species such as Brassica napus L. With the aims of evaluating the risk of excessive or insufficient fertilization and identifying robust relationships that may be used as plant S status indicators, 57 commercial crops of oilseed rape were selected among contrasting soils and along a rainfall gradient that may affect soil S availability. Cultivation practices were investigated and the S and nitrogen (N) concentrations of soil, senescing leaves, stems and seeds were analysed. Despite an excessive organic N supply and large variation in S supply (from 0 to 112 kg S/ha), principal component analysis using 43 parameters indicated that seed yield was poorly related to N and S fertilization rates. While the N and protein-N concentrations in seeds were inversely related to oil and glucosinolate concentrations, they were linked to S and sulphate (SO42−) accumulation in the seeds. Sulphate concentrations in senescing leaves, stems or seeds could be deduced from total S concentrations, as they were positively and highly correlated. Sulphate accounted for on average 0·69 of total S in senescing leaves with minimum and maximum values of 0·007 and 0·94, which revealed conditions of limited and excess supply of S, respectively. This high variation of SO42− concentration in leaves can be interpreted as the result of its mobilization triggered by S deficiency, but cannot be used alone as an indicator of plant S status. A comparison with plants grown in controlled conditions under different S supplies suggests that the intensity of S starvation affects N metabolism, leading to NO3− (nitrate) accumulation. It is further suggested that dual evaluation of SO42− and NO3− concentrations in senescing leaves could be used at the vegetative stage as a field indicator to adjust S fertilization.
Analysis of the radial and poloidal turbulent transport in the edge tokamak plasma
Authors: MESHKANI S. , GHORANNEVISS M. , LAFOUTI M. , SALAR ELAHI A. 
Published: March 2013

AbstractIn this paper, turbulent transport in the edge plasma of the IR-T1 tokamak (r/a = 0.9) in the presence of a resonant helical magnetic field (RHF) and a biased limiter has been investigated and analyzed. The time evolution of potential fluctuation, and electric field and turbulent transport have been measured by using two arrays of the Langmuir probes in both the radial and poloidal directions. The experiments have been done in different regimes such as limiter biasing and RHF, and both of them. The analyses have been done by the fast Fourier transport method and their spectral features are obtained with the help of the standard autocorrelation technique. The results show that radial turbulent transport decreases about 60% after positive biasing application, while it increases about 40% after negative biasing. The effect of positive biasing on poloidal turbulent transport displays an increase of about 55%, while the negative bias voltage decreases the poloidal turbulent transport about 30%. Consequently, confinement is improved and plasma density rises significantly due to the applied positive biasing in IR-T1. However, the results are reversed when negative biasing is applied. Also, in this work, the results of the applied RHF (L = 3) are compared with biasing results and analyzed.
Neurocognition in Psychometrically Defined College Schizotypy Samples: We Are NOT Measuring the “Right Stuff”
Authors: Chun Charlotte A. , Minor Kyle S. , Cohen Alex S. 
Published: March 2013

AbstractAlthough neurocognitive deficits are an integral characteristic of schizophrenia, there is inconclusive evidence as to whether they manifest across the schizophrenia-spectrum. We conducted two studies and a meta-analysis comparing neurocognitive functioning between psychometrically defined schizotypy and control groups recruited from a college population. Study One compared groups on measures of specific and global neurocognition, and subjective and objective quality of life. Study Two examined working memory and subjective cognitive complaints. Across both studies, the schizotypy group showed notably decreased subjective (d= 1.52) and objective (d= 1.02) quality of life and greater subjective cognitive complaints (d= 1.88); however, neurocognition was normal across all measures (d's < .35). Our meta-analysis of 33 studies examining neurocognition in at-risk college students revealed between-group differences in the negligible effect size range for most domains. The schizotypy group demonstrated deficits of a small effect size for working memory and set-shifting abilities. Although at-risk individuals report relatively profound neurocognitive deficits and impoverished quality of life, neurocognitive functioning assessed behaviorally is largely intact. Our data suggest that traditionally defined neurocognitive deficits do not approximate the magnitude of subjective complaints associated with psychometrically defined schizotypy. (JINS, 2013,19, 1–14)
Tri-track: Free Software for Large-Scale Particle Tracking
Authors: Vallotton Pascal , Olivier Sandra 
Published: March 2013

AbstractThe ability to correctly track objects in time-lapse sequences is important in many applications of microscopy. Individual object motions typically display a level of dynamic regularity reflecting the existence of an underlying physics or biology. Best results are obtained when this local information is exploited. Additionally, if the particle number is known to be approximately constant, a large number of tracking scenarios may be rejected on the basis that they are not compatible with a known maximum particle velocity. This represents information of a global nature, which should ideally be exploited too. Some time ago, we devised an efficient algorithm that exploited both types of information. The tracking task was reduced to a max-flow min-cost problem instance through a novel graph structure that comprised vertices representing objects from three consecutive image frames. The algorithm is explained here for the first time. A user-friendly implementation is provided, and the specific relaxation mechanism responsible for the method's effectiveness is uncovered. The software is particularly competitive for complex dynamics such as dense antiparallel flows, or in situations where object displacements are considerable. As an application, we characterize a remarkable vortex structure formed by bacteria engaged in interstitial motility.
Military business and the business of the military in the Kivus
Authors: Verweijen Judith 
Published: March 2013

Contrary to dominant approaches that locate the causes for military entrepreneurialism in eastern Democratic Republic of the Congo predominantly in criminal military elites, this article highlights the importance of the Congolese military's (FARDC) civilian context for understanding military revenue-generation. It analyses how the latter is shaped by structures of domination, signification and legitimisation that drive and are driven by the FARDC's governance, private protection and security practices. It argues that these practices contribute to bestowing a degree of legitimacy on both the FARDC's position of power and some of its revenue-generation activities. Furthermore, by emphasising that the FARDC's regulatory and protection practices are partly the product of popular demands and the routine actions of civilians, the article contends that the causes of military revenue-generation are co-located in the military's civilian environment. In this manner, it offers a more nuanced conceptualisation of military entrepreneurialism, thus opening up new perspectives on policy interventions in this area.
[Les affaires militaires et les affaires des militaires dans le Kivu]. Contrairement aux approches dominantes qui trouvent les causes de l'entrepreneuriat des militaires dans l'est de la RDC essentiellement dans les élites militaires criminelles, cet article met en exergue l'importance du contexte civil de l'armée congolaise (FARDC) pour comprendre les pratiques militaires génératrices de revenus. Il analyse comment ces dernières sont influencées par les structures de domination, de signification et de légitimation qui conduisent et sont conduites par les pratiques de gouvernance, de protection privée et de sécurité des FARDC. L'article soutient que ces pratiques contribuent à l'attribution d'un degré de légitimité tant sur la position du pouvoir des FARDC que sur certaines de leurs activités de génération de revenus. En outre, en insistant sur le fait que les pratiques de protection et de régulation des FARDC résultent en partie des demandes populaires et des actions de routine des civils, l'article soutient que les origines des activités de génération de revenus des militaires sont co-localisés dans l'environnement civil des militaires. De cette manière, l'article offre une conceptualisation de l'entreprenariat militaire plus nuancé, ouvrant ainsi de nouvelles perspectives pour les interventions des bailleurs de fonds dans ce domaine.

Mots-clés : Armée congolaise ; Kivu ; militarisation ; économies informelles ; réforme de l'armée
God and Caesar in the Democratic Republic of Congo: negotiating church–state relations through the management of school fees in Kinshasa's Catholic schools
Authors: Titeca Kristof , De Herdt Tom , Wagemakers Inge 
Published: March 2013

This article argues that state (re)construction and functioning involves negotiated governance between both state and non-state actors, in which power relations between local actors are not just implicitly present or co-influencing policies but are of uttermost importance to the formation of policy and state. One of the main non-state actors in African service delivery is the church. State and church are two major poles of power which determine – through negotiation – large domains of service delivery, such as education. We discuss a major attempt by the Catholic Church to reform the school-fee system in Kinshasa (DRC). The attempt largely failed, but its analysis reveals the political capabilities of different actors involved. The arrangements of state and non-state actors largely evolve in a roundabout way, not at all along the lines of an explicit negotiation process, and are very much determined by local-level governance instead of higher-level policies.
[Dieu et César dans la République Démocratique du Congo : les négociations des relations entre l'église et l'état à travers l'administration des frais de scolarité dans les écoles Catholiques de Kinshasa.] Cet article soutient que la (re)construction de l'État et son fonctionnement impliquent une gouvernance négociée tant entre les acteurs étatiques et non-étatiques, et dans laquelle les relations de pouvoir ne sont pas seulement présentes implicitement ou ne font pas qu'influencer conjointement les politiques, mais sont d'importance capitale à la formation de la politique et de l'État. Un des acteurs non-étatiques principaux dans la fourniture de service en Afrique est l'Église. L'État et l'Église sont deux pôles importants de pouvoir qui déterminent - par la négociation - les grands domaines de fourniture de services, comme l'éducation. Cette étude examine une tentative de réforme majeure du système des frais scolaires à Kinshasa (RDC) par l'Église catholique. La tentative a échoué en grande partie, mais son analyse révèle les capacités politiques des différents acteurs impliqués. Les accords des acteurs étatiques et non-étatiques se développent majoritairement d'une manière détournée, pas du tout dans le sens d'un processus de négociation explicite, et sont très largement déterminées par la gouvernance au niveau local à défaut de politiques d'un niveau supérieur.

Mots-clés : République Démocratique du Congo ; l'État ; l'Église ; gouvernance ; secteur éducatif