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Mobility affects copulation and oviposition dynamics in Pieris brassicae in seminatural cages

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Insect Science 2019年第4期26卷 743-752页

作者： Nicolas Larranaga Michel Baguette olivier Calvez Delphine Legrand Centre National de la Recherche Scientifique and Universite Paul Sabatier Toulouse III SETE Station d'Ecologie Theorique et Experimentale UMR 5321 Moulis France Museum National d'Histoire Naturelle (Sorbonne Universites) Institut de Systematique Evolution et Biodiversite UMR 7205 57 rue Cuvier 75005 Paris cedex 5 France

When, how often and for how long organisms mate can have strong consequences for individual fitness and are crucial aspects of evolutionary ecology. Such determinants are likely to be of even greater importance in monandrous species and species with short adult life stages. Previous work suggests that mobility, a key dispersal? related trait, may affect the dynamics of copulations, but few studies have investigated the impact of individual mobility on mating latency, copulation duration and oviposition latency simultaneously. In this paper, we monitored the copulation dynamics of 40 males and 40 females, as well as the oviposition dynamics of the females of the Large White butterfly Pieris brassicae, a facultative long-distance disperser butterfly. Individuals from a breeding were selected to create a uniform distribution of mobility and we recorded the timing, number and duration of all copulations in a semiexperimental system. We showed that mobility, measured as the time spent in flight under stressful conditions (a proxy of dispersal tendency), correlates with all aspects of copulation dynamics: mobile males and females mated earlier and for shorter periods than less mobile individuals. In turn, late mating females increased the time between copulation and oviposition. These results feed the previously described mobility syndrome of R brassicae, involving morphological and physiological characters, with life-history traits. We suggest that the reduction of mating latency and copulation duration has an adaptive value in dispersing individuals, as their life expectancy might be shorter than that of sedentary individuals.

关键词： copulation duration life history mating latency mobility syndrome oviposition latency Pieris brassicae

Watson-Jones Anatomical Approach for Open Reduction and Internal Fixation of Proximal Femoral Fractures without Image Intensifier in a Low-Resource Setting

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Delayed sexual maturity in males of Vespa velutina

Open Journal of Orthopedics（矫形学期刊） 2024年第4期 173页

作者： Loïc Fonkoue Gaspary Fodjeu Kennedy olivier Muluem olivier Ngongang Theophile Nana Marie Ange Ngo Yamben DésiréAkaba Urich Tambekou Daniel Eone Handy

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Insect Science 2018年第4期25卷 679-689页

作者： Juliette Poidatz Christophe Bressac olivier Bonnard Denis Thiery INRA UMR1065 Santé et Agroecologie du Vignoble ISVV Bordeaux Sciences Agro Villenave d'Omon France IRBI Universite Francois Rabelais UMR CNRS 7261 Tours France

Vespa velutina var nigrithorax （Lepelletier, 1835） is an invasive predator of bees accidentally introduced in France in 2004, and it is having a serious impact on apiculture and ecosystems. Studying the reproduction of an invasive species is key to assess its population dynamic. This study explores the sexual maturation of IT. velutina males and the evolution of their fertility. The main studied parameters were physiologic （spermiogenesis, spermatogenesis） and anatomic （testes size and structure, head width）. Two populations of males were described based on their emergence period： early males in early summer or classic males in autumn. Each testis has an average of 108 testicular follicles. Spermatogenesis is synchronous, with only 1 sperm production wave, and completed, on average, at 10.3 d after emergence with the degeneration of the testes. The sperm counts in seminal vesicles of mature males are 3 x 106 in October/November and 0.8 ~ 106 in June. In com- parison, females store 0.1 x 106 sperm in their spermathecae. The early males emerged from colonies made by fertilized queens. The reproductive potential of these early males seemed limited, and their fimction in the colony is discussed. The sperm stock evolution in autumn males suggests the occurrence of a reproductive pattern of male competition for the access to females and a single copulation per male. The synchronicity of male and foundress emergences and sexual maturation is of primary importance for the mating success and the future colony development.

关键词： male fertility seminal vesicles spermiogenesis sperm stock testis Vespidae yellow-legged hornet

Spatial distribution of Vespa velutina individuals hunting at domestic honeybee hives： heterogeneity at a local scale

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Insect Science 2014年第6期21卷 765-774页

作者： Karine Monceau olivier Bonnard Jerome Moreau Denis Thiery INRA UMR1065 Sante et Agroecologie du Vignoble F-33883 Villenave d'Omon ISVV UMR1065 Sante et Agroecologie du Vignoble Bordeaux Sciences Agro Universite de Bordeaux F-33883 Villenave d'Omon Equipe Ecologie Evolutive UMR 6282 Biogeosciences 6 Bd Gabriel Universite de Bourgogne F-21000 Dijon France

Since its recent introduction into Europe, the yellow-legged hornet, Vespa velutina, has become a major predator of the domestic honeybee, Apis mellifera, but little is known about its hunting behavior. We studied V. velutina hunting behavior by a capture- mark-recapture procedure in an experimental apiary. A total of 360 hornets were captured and tagged, and we determined：（i） the number of hornets visiting the apiary and the changes in time, （ii） the average number of individual visits per half-day and the time elapsed between consecutive recaptures, and （iii） the individual and global distribution of the hornets in the apiary. More than 50% of the marked hornets were recaptured at least once, this increased to 74% in considering the first marked individuals. We estimated 350 hornets visiting the patch daily with at least 1 visit per half-day. The number of marked hornets decreased over time while the number of unmarked ones increased, suggesting a turnover of individuals. The reduction of the delay between consecutive visits indicates that hornets became more efficient over time. Most of the hornets （88%） were recaptured in front of different hives but, overall, the global distribution was aggregative. Hornets were mainly recaptured in front of 1 hive which was neither the smallest nor the biggest colony, suggesting that the major cue used by hornets is not the amount of food. We hypothesize that the defensive behavior of the honeybee colony could explain our results which may be promising to further studies.

关键词： Apis mellifera capture-mark-recapture learning predation Vespidae yellow-legged hornet

Imaging Mass Cytometry:A promising multiplex detection tool for plant science research

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Molecular Plant 2021年第8期14卷 1241-1243页

作者： olivier Leroux Taunia Closson Dominique Van Der Straeten Ghent University Laboratory of Functional Plant BiologyK.L.Ledeganckstraat 359000 GentBelgium Fluidigm Corporation MarkhamONCanada

In recent years there has been an increased tendency to shift from sin gle-marker immuno histochemistry toward multiplexed marker in situ *** latter approach allows detection of the spatial distribution of multiple markers in a single tissue section and enables investigation of marker interaction,hence greatly improving our understanding of tissue physiology.

关键词： hence enable latter

Saturation-excess overland flow in the European loess belt:An underestimated process?

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International Soil and Water Conservation Research 2023年第4期11卷 688-699页

作者： Valentin Landemaine olivier Cerdan Thomas Grangeon Rosalie Vandromme Benoit Laignel olivier Evrard Sébastien Salvador-Blanes J.Patrick Laceby BRGM F-45060OrléansFrance University of Rouen M2CRouenFrance Laboratoire des Sciences du Climat et de l'Environnement(LSCE/IPSL) UnitéMixte de Recherche 8212(CEA/CNRS/UVSQ)UniversitéParis-SaclayGif-sur-YvetteFrance University of Tours UR 6293-GéoHydrosystèmes Continentaux(GEHCO)France Alberta Environment and Protected Areas CalgaryCanada

A major challenge in runoff and soil erosion modelling is the adequate representation of the most relevant processes in models while avoiding over *** the European loess belt,pro-gressive soil crusting during rainfall events,resulting in infiltration-excess runoff,is usually considered the dominant process generating runoff on catchments covered with silty ***-excess may also occur and affect their runoff and erosion ***,saturation-excess runoff occurrence and quantification have rarely been performed and is usually not taken into account when modelling runoff and erosion in these ***,a continuous simulation of the Austreberthe catchment(214 km^(2)),located in the European loess belt(Normandy,France),was conducted with the new Water and Sediment(WaterSed)model over 12 years,corresponding to more than 780 individual rainfall events,at a 25 m spatial *** inter-annual variability of runoff and erosion was closely linked to the number of intense events per year and their distribution through the *** model was properly calibrated over a representative set of 35 rainfall events,considering either infiltration-excess and/or saturation-excess *** was also able to reproduce the measured runoff volume for most of the monitoring ***,the three years with most rainfall were adequately modelled only including saturation-excess *** analysis performed at the seasonal scale revealed that saturation was modelled in the catchment during almost all of the modelling period,suggesting the importance of this often overlooked process in current modelling attempts.

关键词： European loess belt Soil erosion Saturation-excess runoff WaterSed model

Comment on: survival outcomes after portal vein embolization and liver resection compared with liver transplant for patients with extensive colorectal cancer liver metastases

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Hepatobiliary Surgery and Nutrition 2021年第4期10卷 507-509页

作者： Claire Goumard olivier Scatton Department of Hepatobiliary Surgery and Liver Transplantation PitiéSalpêtrière HospitalSorbonne UniversitéParisFrance

We read with great interest the work of Dueland et *** issued in JAMA Surgery(1).In this retrospective study gathering data from several prospective cohorts from Norway,the authors compare oncological outcome of patients who underwent liver transplantation(LT)*** venous embolization(PVE)followed by liver resection(LR)for colorectal liver metastasis(CRLM).

关键词： Surgery liver metastasis

Body fluid analog chlorination:Application to the determination of disinfection byproduct formation kinetics in swimming pool water

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Journal of Environmental Sciences 2020年第1期32卷 112-122页

作者： Lucie Tsamba Nicolas Cimetiere Dominique Wolbert olivier Correc Pierre Le Cloirec Rennes University ENSCRCNRSISCR-UMR 6226F-35000 RennesFrance Scientific and Technical Center for Buildings 11 rue Henri PicheritBP 8234144323 Nantes Cedex 3France

Disinfection by-products(DBPs)are formed in swimming pools by the reactions of bather inputs with the *** a wide range of molecules has been identified within DBPs,only few kinetic rates have been *** study investigates the kinetics of chlorine consumption,chloroform formation and dichloroacetonitrile formation caused by human *** the flux and main components of human inputs have been determined and formalized through Body Fluid Analogs(BFAs),it is possible to model the DBPs formation kinetics by studying a limited number of precursor *** each parameter the individual contributions of BFA components have been quantified and kinetic rates have been determined,based on reaction mechanisms proposed in the *** a molar consumption of 4 mol Cl2/mol,urea is confirmed as the major chlorine consumer in the BFA because of its high concentration in human *** higher reactivity of ammonia is however *** acid is responsible for most of the chloroform produced during BFA *** formation is relatively slow with a limiting rate constant determined at 5.50×10^-3 L/mol/sec.L-histidine is the only precursor for dichloroacetonitrile in the *** DBP is rapidly formed and its degradation by hydrolysis and by reaction with hypochlorite shortens its lifetime in the *** rates of dichloroacetonitrile formation by L-histidine chlorination have been established based on the latest chlorination mechanisms ***,this study shows that the reactivity toward chlorine differs whether L-histidine is isolated or mixed with BFA components.

关键词： Disinfection by-products Kinetic modeling Body fluid analog Swimming pools

GxENet: Novel fully connected neural network based approaches to incorporate GxE for predicting wheat yield

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Artificial Intelligence in Agriculture 2023年第2期8卷 60-76页

作者： Sheikh Jubair olivier Tremblay-Savard Mike Domaratzki Department of Computer Science University of Manitoba66 Chancellors CirWinnipegMBR3T 2N2Canada Department of Computer Science University of Western Ontario1151 Richmond StLondonONN6A 3K7Canada

The expression of quantitative traits of a line of a crop depends on its genetics,the environment where it is sown and the interaction between the genetic information and the environment known as *** to maximize food production,new varieties are developed by selecting superior lines of seeds suitable for a specific *** selection is a computational technique for developing a new variety that uses whole genome molecular markers to identify top lines of a crop.A large number of statistical and machine learning models are employed for single environment trials,where it is assumed that the environment does not have any effect on the quantitative ***,it is essential to consider both genomic and environmental data to develop a new variety,as these strong assumptions may lead to failing to select top lines for an *** we devised three novel deep learning frameworks incorporating GxE within the deep learning model and predicted line-specific yield for an *** the process,we also developed a new technique for identifying environmentspecific markers that can be useful in many applications of environment-specific genomic *** result demonstrates that our best framework obtains 1.75 to 1.95 times better correlation coefficients than other deep learning models that incorporate environmental data depending on the test ***,the feature importance analysis shows that environmental information,followed by genomic information,is the driving factor in predicting environment-specific yield for a *** also demonstrate a way to extend our framework for new data types,such as text or soil *** extended model also shows the potential to be useful in genomic selection.

关键词： Genomic prediction Multi-environment trial Deep learning GxE Enviromics