abstract：:Two aspects of psychology and physiology of time are dealt with in this paper: the way time perception was increasingly studied during the 19th century by scientists, including many physicists, and the way the temporal properties of the nervous system were discovered and explored by physiologists. The neurophysiologic...

journal_title：Comptes rendus biologies

authors： Debru C

更新日期：2006-05-01 00:00:00

abstract：:Four hundred twenty three marine mammals, in 72 stranding events, were recorded between 1877 and 2005 in New Caledonia, the Loyalty Islands, and Vanuatu in the southwest Pacific. Sixteen species were represented in this count, including: minke whale, Balaenoptera acutorostrata (1 single stranding), sei whale, B. borea...

journal_title：Comptes rendus biologies

authors： Borsa P

更新日期：2006-04-01 00:00:00

abstract：:The effect of Phragmanthera capitata (Sprengel) Balle, an epiphytic Loranthaceae, on latex production of three clones of rubber tree, Hevea brasiliensis (Müll. Arg.), was studied in the industrial plantation of Mitzic, in Gabon. The 22-year-old trees, presenting the largest trunk circumference, were the most parasitiz...

journal_title：Comptes rendus biologies

authors： Engone Obiang NL,Sallé G

更新日期：2006-03-01 00:00:00

abstract：:In a previous study, we showed that estimates of the BSE epidemic in France were censored by cattle mortality and by a lack of diagnosis. Indeed, we estimated that 51 300 cattle were infected by the BSE agent between 1987 and 1997, whereas only 103 clinical BSE cases were detected by the passive surveillance system up...

journal_title：Comptes rendus biologies

authors： Supervie V,Costagliola D

更新日期：2006-02-01 00:00:00

abstract：:A model of plant succession has been built for simulating the growth of six species, based on physiological processes such as photosynthesis, growth and maintenance respiration, carbon allocation, nitrogen absorption, fixation and remobilisation, organ mortality, seed dispersal and germination. The simulated global pl...

journal_title：Comptes rendus biologies

authors： Martineau Y,Saugier B

更新日期：2006-01-01 00:00:00

abstract：:We evaluated two biodiversity criteria, higher taxonomic diversity and phylogenetic diversity in French Guiana. For this, we used a recent assessment of the knowledge accumulated since 30 years of study on the amphibian species currently known in French Guiana. We focused on two well-represented genera, Hyla and Scina...

journal_title：Comptes rendus biologies

authors： Salducci MD,Marty C,Fouquet A,Gilles A

更新日期：2005-10-01 00:00:00

abstract：:The use of fluctuating asymmetry (FA) to reveal environmental stress in natural populations has been investigated extensively over the past decade. In aquatic ecosystems, many investigations involve amphibiotic insects with larval development stages in freshwater. To explain the important variability in study results,...

journal_title：Comptes rendus biologies

authors： Piscart C,Moreteau JC,Beisel JN

更新日期：2005-10-01 00:00:00

abstract：:5-(Hydroxymethyl)uracil, 5-formyluracil or 5-carboxyuracil can be formed in DNA upon exposure to ionizing radiations. We report the effect of the latter oxidative lesions on the in vitro transcription by T7 RNA polymerase using a single-stranded short model template. Kinetic experiments showed that the transcription y...

journal_title：Comptes rendus biologies

authors： Guerniou V,Gasparutto D,Douki T,Cadet J,Sauvaigo S

更新日期：2005-09-01 00:00:00

abstract：:Urotensin-II-related peptide (URP) is an eight-amino-acid peptide recently isolated from rat brain and considered as the endogenous ligand for the urotensin-II receptor. Immunohistochemical treatment of mouse brain sections with anti-URP antibodies revealed numerous immunopositive fibres in the median eminence and vas...

journal_title：Comptes rendus biologies

authors： Egginger JG,Calas A

更新日期：2005-08-01 00:00:00

abstract：:Several recent molecular studies have begun to clarify the phylogeny of Acanthomorpha (Teleostei), a wide clade of teleost fishes. However, different molecular datasets do not agree on a single history of the taxa, probably because of marker-specific biases. The 'total-evidence' approach maximizes character congruence...

journal_title：Comptes rendus biologies

authors： Dettai A,Lecointre G

更新日期：2005-07-01 00:00:00

abstract：:Few proteins have had such a strong impact on a field as the lac repressor has had in Molecular Biology. Over 40 years ago, Jacob and Monod [Genetic regulatory mechanisms in the synthesis of proteins, J. Mol. Biol. 3 (1961) 318] proposed a model for gene regulation, which survives essentially unchanged in contemporary...

journal_title：Comptes rendus biologies

authors： Lewis M

更新日期：2005-06-01 00:00:00

abstract：:In this work we show how mathematical models and optimal control techniques can help us to solve some problems of environmental engineering, more precisely, water pollution problems arising from wastewater discharges into coastal areas or rivers. We deal with a complete two-dimensional mathematical model for the evolu...

journal_title：Comptes rendus biologies

authors： Alvarez-Vázquez LJ,Martínez A,Rodríguez C,Vázquez-Méndez ME

更新日期：2005-04-01 00:00:00

abstract：:Eutypa dieback (dying arm disease, eutypiosis) is a very devastating disease in many grape-producing areas around the world. This vascular disease is induced by the ascomycete Eutypa lata Pers. Fr. Tul & C. Tul. invading the trunk by pruning wounds. The environmental factors and the nutritional requirements regulating...

journal_title：Comptes rendus biologies

authors： Amborabé BE,Octave S,Roblin G

更新日期：2005-03-01 00:00:00

abstract：:Although there are many types of epilepsy of both genetic and acquired forms, temporal lobe epilepsy (TLE) with hippocampal sclerosis is probably the single most common human epilepsy, and the one most intensely studied. Despite a wealth of descriptive data obtained from patient histories, imaging techniques, electroe...

journal_title：Comptes rendus biologies

authors： Sloviter RS

更新日期：2005-02-01 00:00:00

abstract：:The soil macrofauna of a pure beech (PS) and a mixed beech-hornbeam (MS) stand was recorded using a sample design spatially explicit at stand level. Humic epipedon morphological and chemical properties, relative irradiance, soil bulk density, and the specific composition of the litter in MS were also investigated. The...

journal_title：Comptes rendus biologies

authors： Aubert M,Hedde M,Decaëns T,Margerie P,Alard D,Bureau F

更新日期：2005-01-01 00:00:00

abstract：:Apoptosis and inflammation are important cellular processes that are highly regulated through specific protein-protein interactions (PPI). Proteins involved in these signaling cascades often carry PPI domains that belong to the death-domain superfamily. This includes the structurally well-characterized Death Domain (D...

journal_title：Comptes rendus biologies

authors： Kohl A,Grütter MG

更新日期：2004-12-01 00:00:00

abstract：:The paper provides a mathematical study of a model of urban dynamics, adjusting to an ecological model proposed by Lotka and Volterra. The model is a system of two first-order non-linear ordinary differential equations. The study proposed here completes the original proof by using the main tools such as a Lyapunov fun...

journal_title：Comptes rendus biologies

authors： El Ghordaf J,Hbid ML,Arino O

更新日期：2004-11-01 00:00:00

abstract：:Hardwood trees are able to reorient their axes owing to tension wood differentiation. Tension wood is characterised by important ultrastructural modifications, such as the occurrence in a number of species, of an extra secondary wall layer, named gelatinous layer or G-layer, mainly constituted of cellulose microfibril...

journal_title：Comptes rendus biologies

authors： Pilate G,Chabbert B,Cathala B,Yoshinaga A,Leplé JC,Laurans F,Lapierre C,Ruel K

更新日期：2004-09-01 00:00:00

abstract：:13C- and deuterium (D)-labeled ferulic acid and sinapic acid ([8-(13)C, 3-OCD3]-ferulic acid and [8-(13)C, 3,5-OCD3]-sinapic acid) were administered to robinia (Robinia pseudoacacia L.) shoots. To estimate the distribution of the label from administrated ferulic or sinapic acid, continuous 50-microm-thick tangential s...

journal_title：Comptes rendus biologies

authors： Yamauchi K,Fukushima K

更新日期：2004-09-01 00:00:00

abstract：:Sleep is a ubiquitous component of animal life, and prolonged sleep deprivation is fatal in both vertebrates and invertebrates. The physiologic function of sleep, however, is not known. We propose here that sleep provides a period of time necessary to reapportion resources within neurons and neural systems that become...

journal_title：Comptes rendus biologies

authors： Gally JA,Edelman GM

更新日期：2004-08-01 00:00:00

abstract：:A mitochondrial and nuclear gene analysis allowed us to precise the taxonomical position of the two sympatric species of mice known to be present on Cyprus. One of them is the commensal house mouse M. m. domesticus, and the other revealed to be a new taxon that is a sister species of M. spicilegus and M. macedonicus. ...

journal_title：Comptes rendus biologies

authors： Bonhomme F,Orth A,Cucchi T,Hadjisterkotis E,Vigne JD,Auffray JC

更新日期：2004-05-01 00:00:00

abstract：:We present the pollen analysis of a new sedimentary sequence taken at La Pouretère ( 1720 m), in the mountain vegetation zone of the Marcadau valley (central Pyrenees). The Lateglacial and Holocene chronology is supported by six 14C-dating results. The complementary analysis of some vegetal macroremains, stomata, poll...

journal_title：Comptes rendus biologies

authors： Aubert S,Belet JM,Bouchette A,Otto T,Dedoubat JJ,Fontugne M,Jalut G

更新日期：2004-04-01 00:00:00

abstract：:A numerical simulation for the dynamics of a model that describes the sexual phase of Monogonont Rotifera reproduction is presented. The simulation is carried out by means of a numerical method based on the integration along the characteristic curves. The numerical experiments cover two basic situations: the existence...

journal_title：Comptes rendus biologies

authors： Angulo O,López-Marcos JC,López-Marcos MA

更新日期：2004-03-01 00:00:00

abstract：:In this paper we consider cell cycle models for which the transition operator for the evolution of birth mass density is a simple, linear dynamical system with a stochastic perturbation. The convolution model for a birth mass distribution is presented. Density functions of birth mass and tail probabilities in n-th gen...

journal_title：Comptes rendus biologies

authors： Tyrcha J

更新日期：2004-03-01 00:00:00

abstract：:This paper suggests three additions to the Hildebrand method for gait-pattern specification. The first allows an extension of this method by the use of the forelimb as reference. Thus, dataset could be gathered indifferently from fore or hindlimbs cycles to identify a symmetrical gait or compare gaits of diverse speci...

journal_title：Comptes rendus biologies

authors： Renous S,Herbin M,Gasc JP

更新日期：2004-02-01 00:00:00

abstract：:An agent-based model (AMB) used to simulate the spread of Human African Trypanosomiasis is presented together with the results of simulations of a focus of the disease. This model is a completely spatialized approach taking into account a series of often overlooked parameters such as human behaviour (activity-related ...

journal_title：Comptes rendus biologies

authors： Muller G,Grébaut P,Gouteux JP

更新日期：2004-01-01 00:00:00

abstract：:The role of the eyes, and more precisely that of the ommatidian pigments, in the control of daily rhythms of movement of Daphnia longispina is investigated. In the laboratory, under permanent light (LL), the pigmentary modifications observed are globally similar to those observed in situ, except in their timing, aroun...

journal_title：Comptes rendus biologies

authors： Cellier-Michel S,Berthon JL

更新日期：2003-12-01 00:00:00

abstract：:Advances in pharmacology and genomics, and their intervention in human biology are beyond our abilities to understand their consequences. Therapeutic intervention in highly complex, non-linear, adaptive biological systems results in some unforeseen and undesirable consequences. To do the most good with the least harm,...

journal_title：Comptes rendus biologies

authors： Bassingthwaighte JB

更新日期：2003-10-01 00:00:00

abstract：:Clinically very heterogeneous, breast cancer prognosis and treatment response are difficult to predict with the current prognostic histoclinical parameters. Mammary oncogenesis remains poorly understood. DNA array technology allows the simultaneous analysis of the mRNA expression levels of thousands of genes in biolog...

journal_title：Comptes rendus biologies

authors： Bertucci F,Loriod B,Nasser V,Granjeaud S,Tagett R,Braud AC,Patrice V,Houlgatte R,Daniel B,Nguyen C

更新日期：2003-10-01 00:00:00

abstract：:The Chinese genome project was initiated in 1993 with the goal of contributing 1% to the Human Genome Program. The study of gene expression profiles with cDNA microarrays, and large-scale sequencing and analysis of 130928 expressed sequence tags (ESTs), allowed isolation and characterization of over 1000 novel full-le...

journal_title：Comptes rendus biologies

authors： Han ZG,Zhao GP,Chen Z

更新日期：2003-10-01 00:00:00

abstract：:Comparison of dispersal rates of the bog fritillary butterfly between continuous and fragmented landscapes indicates that between patch dispersal is significantly lower in the fragmented landscape, while population densities are of the same order of magnitude. Analyses of the dynamics of the suitable habitat for the b...

journal_title：Comptes rendus biologies

authors： Baguette M,Mennechez G,Petit S,Schtickzelle N

更新日期：2003-08-01 00:00:00

abstract：:The evidence for amphibian population declines is based on count data that were not adjusted for detection probabilities. Such data are not reliable even when collected using standard methods. The formula C = Np (where C is a count, N the true parameter value, and p is a detection probability) relates count data to de...

journal_title：Comptes rendus biologies

authors： Schmidt BR

更新日期：2003-08-01 00:00:00

abstract：:Pleistocene climatic changes shaped the patterns of biodiversity in Europe and around the Mediterranean. Describing the phylogeographic structure of animal populations and inferring past population dynamics is essential to develop a framework for conservation biology in Europe. Direct persecution, habitat loss, popula...

journal_title：Comptes rendus biologies

authors： Randi E

更新日期：2003-08-01 00:00:00

abstract：:A fine regulation of the amiloride-sensitive Epithelial Sodium Channel (ENaC), made of alpha, beta and gamma subunits, is crucial for maintenance of Na+ balance and blood pressure. Both beta- and gamma-ENaC participate in negative regulation by interacting with Nedd4-2, an E3 ubiquitin-ligase. Disruption of this inter...

journal_title：Comptes rendus biologies

authors： Malbert-Colas L,Nicolas G,Galand C,Lecomte MC,Dhermy D

更新日期：2003-07-01 00:00:00

abstract：:The aim of this work is to assess the use of (SPOT) multispectral visible infrared remote sensing to study microphytobentos assemblages in a shellfish ecosystem (Bay of Bourgneuf, France). SPOT satellite images (acquired at low tide in spring or autumn between 1986 and 1998) were calibrated using in situ radiometric d...

journal_title：Comptes rendus biologies

authors： Méléder V,Launeau P,Barillé L,Rincé Y

更新日期：2003-04-01 00:00:00

abstract：:We test relationships between structure of acoustic signal used for individual recognition and nesting ecology among two gulls: the black-headed gull (Larus ridibundus), in which chicks remain in the nest, and the slender-billed gull (L. genei), in which chicks leave the nest after hatching to form crèches. A striking...

journal_title：Comptes rendus biologies

authors： Mathevon N,Charrier I,Jouventin P

更新日期：2003-03-01 00:00:00

abstract：:This article demonstrates how that the effectiveness of nervous system in doing the computations essential to an organism can be based on using algorithms that are readily implemented by nervous system 'device biophysics'. Collective effects and collective algorithms that exploit their dynamics provide powerful potent...

journal_title：Comptes rendus biologies

authors： Hopfield JJ,Brody CD

更新日期：2003-02-01 00:00:00

abstract：:This paper deals with the effects of agronomic practices on parasite life cycles, and the design of integrated crop protection strategies. Cropping systems have a large effect on the size of the primary inoculum and its localisation, on the development and spread of epidemics, and on the coordination of the life cycle...

journal_title：Comptes rendus biologies

authors： Meynard JM,Doré T,Lucas P

更新日期：2003-01-01 00:00:00

abstract：:We have isolated a cardiomyogenic cell line (CMG cell) from murine bone marrow mesenchymal stem cells. The cells showed a fibroblast-like morphology, but the morphology changed after 5-azacytidine exposure. They began spontaneous beating after 2 weeks, and expressed ANP and BNP. Electron microscopy revealed a cardiomy...

journal_title：Comptes rendus biologies

authors： Fukuda K

更新日期：2002-10-01 00:00:00

abstract：:Discriminative canonical analysis of 87 biometric parameters in the marine and lagoon atherinids of 'Atherina boyeri' complex from the Mediterranean Sea helps defining three distinct atherinid groups: marine punctuated, marine unpunctuated and lagoon atherinids. Each atherinid group constitutes a clearly independent o...

journal_title：Comptes rendus biologies

authors： Trabelsi M,Faure E,Quignard JP,Boussaïd M,Focant B,Mâamouri F

更新日期：2002-09-01 00:00:00