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Identifying constraints in the evolution of primate societies.
International audience The evolutionary study of social systems in non-human primates has long been focused on ecological determinants. The predictive value of socio-ecological models remains quite low, however, in particular because such equilibrium models cannot integrate the course of history. Th...
Age-dependent gain of alternative splice forms and biased duplication explain the relation between splicing and duplication.
We analyze here the relation between alternative splicing and gene duplication in light of recent genomic data, with a focus on the human genome. We show that the previously reported negative correlation between level of alternative splicing and family size no longer holds true. We clarify this patt...
What Drives the Diversification of Eyespots in Morpho Butterflies? Disentangling Developmental and Selective Constraints From Neutral Evolution
International audience Eyespots are wing color pattern elements repeatedly observed in many butterflies,whose developmental genetics has been extensively documented. Nevertheless, theevolutionary forces shaping their diversification across species still remain largelyunknown. Here we investigate the...
Review of Technologies for the Characterization and Monitoring of VOCs, Reduced Sulphur Compounds and CH4
The overall goal of this project is to better understand the advantages and limitations of air emission pollutant characterization and monitoring techniques from area sources. This will allow for the selection of current technologies that are most suitable for measuring fugitive emissions of air pol...
A Jeopardy-Style Review Game Using Team Clickers
Abstract Introduction Gaming has been used for many years as a useful supplemental instruction method in the biomedical sciences. However, the effective use of games can be challenging in a large classroom setting due to the difficulty of engaging all students. The goal of this exercise was to desig...
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The structure of optimal portfolio strategies for continuous time markets
The paper studies problem of continuous time optimal portfolio selection for a incom- plete market diffusion model. It is shown that, under some mild conditions, near optimal strategies for investors with different performance criteria can be constructed using a limited number of fixed processes (mu...
Ideological Manipulation of Controversial Information: The Unusual Case of the Chinese-subtitled Version of House of Cards
In recent years, owing to the spread of cultural and economic globalisation, Western values and ideologies have become increasingly accessible via media products to the general public in the People’s Republic of China (Mainland China, or China). Although translation enables the exchange of socio-cul...
Comparative analyses of the molecular footprint of domestication in three Solanaceae species : eggplant, pepper and tomato
Domestication started thousand years ago when human shifted from hunter-gatherer to agrarian societies. They started selecting wild plants for phenotypes related to consumption andyield. This evolutionary process induced changes in the gene pool of domesticated plants. This thesis focuses on genetic...
Endogenous viral mutations, evolutionary selection, and containment policy design
How will the novel coronavirus evolve? I study a simple epidemiological model, in which mutations may change the properties of the virus and its associated disease stochastically and antigenic drifts allow new variants to partially evade immunity. I show analytically that variants with higher infect...
Genetic and Evolutionary Analyses of Drosophila Melanogaster Divergently Selected for Geotaxis
Phylogenomics of C(4) photosynthesis in sedges (Cyperaceae): multiple appearances and genetic convergence.
C(4) photosynthesis is an adaptive trait conferring an advantage in warm and open habitats. It originated multiple times and is currently reported in 18 plant families. It has been recently shown that phosphoenolpyruvate carboxylase (PEPC), a key enzyme of the C(4) pathway, evolved through numerous...
Stochastic Sensor Scheduling for Energy Constrained Estimation in Multi-Hop Wireless Sensor Networks
Wireless Sensor Networks (WSNs) enable a wealth of new applications where remote estimation is essential. Individual sensors simultaneously sense a dynamic process and transmit measured information over a shared channel to a central fusion center. The fusion center computes an estimate of the proces...
Impact of Forest Fragmentation on Patterns of Mountain Pine Beetle-Caused Tree Mortality
What are the costs of learning? Modest trade-offs and constitutive costs do not set the price of fast associative learning ability in a parasitoid wasp
International audience Learning ability has been associated with energetic costs that typically become apparent through trade-offs in a wide range of developmental, physiological, and life-history traits. Costs associated with learning ability can be either constitutive or induced, depending on whet...
Morphological features in female judoka of different grades
A avaliação das diferenças morfológicas entre mulheres judocas de diferentes categorias possibilitaria estimar a influência da atividade motora no judô sobre o desempenho das atletas, aperfeiçoando o processo de seleção no judô feminino. Assim, este estudo objetivou comparar as características morfo...
Secular changes in human reproduction and assisted reproductive technologies
Since the middle to late 20th century the majority of children born in the developing world have been likely to enter into post-reproductive age. Currently, child mortality is at its lowest level in human history. While more children are living to post reproductive age, approximately 15% of couples...
Phylogenetic analyses of C4 photosynthesis evolution in grasses: genetics of convergence and convergence of genes
Summary : During the evolutionary diversification of organisms, similar ecological constraints led to the recurrent appearances of the same traits (phenotypes) in distant lineages, a phenomenon called convergence. In most cases, the genetic origins of the convergent traits remain unknown, but recent...
Extensive local adaptation within the chemosensory system following Drosophila melanogaster's global expansion.
How organisms adapt to new environments is of fundamental biological interest, but poorly understood at the genetic level. Chemosensory systems provide attractive models to address this problem, because they lie between external environmental signals and internal physiological responses. To investig...
On the fate of sexual traits under asexuality.
Environmental shifts and life-history changes may result in formerly adaptive traits becoming non-functional or maladaptive. In the absence of pleiotropy and other constraints, such traits may decay as a consequence of neutral mutation accumulation or selective processes, highlighting the importance...
Chance and necessity in the genome evolution of endosymbiotic bacteria of insects
Analysis of the behaviour of consumers of artisanal beer in the city of La Plata
Se realizó una investigación sobre el comportamiento del consumidor de cerveza artesanal en La Plata en donde, a través de diferentes técnicas utilizadas, se pudo evidenciar como los resultados obtenidos a través de la investigación realizada con los mapas mentales fueron confirmados por la técnica...
Detecting mental states of alertness with genetic algorithm variable selection
International audience Email Print Request Permissions Save to Project The objective of the present work is to develop a method able to automatically determine mental states of vigilance; i.e., a person's state of alertness. Such a task is relevant to diverse domains, where a person is expected or r...
Uncertainties in power computations in a turbocharger test bench
The adaptive function of melanin-based coloration in the tawny owl (Strix aluco) ; the proximate role of the melanocortin system
Colour polymorphism is common in wild population. One of the main questioning of evolutionary biologists is to understand how different colour variants could have evolved and be maintained in fluctuating environments, a selective process that forces individuals to constantly adapt their strategies i...
Olfactory Proteins in Timema Stick Insects
Most animals use olfaction to obtain important information from the environment, including the presence of food or mates. Insects detect odorants through receptors that are expressed in the sensory neurons of the olfactory sensilla, which cover the surface of the antennae. The olfactory capacities o...