|
|
|
|
|
| Loisel, P.; Harmand, J.; Zemb, O.; Latrille, E.; Lobry, C.; Delgenes, J.P.; Godon, J.J.. |
| The exact extent of microbial diversity remains unknowable. Nevertheless, fingerprinting patterns [denaturing gradient electrophoresis (DGE), single-strand conformation polymorphism (SSCP)] provide an image of a microbial ecosystem and contain diversity data. We generated numerical simulation fingerprinting patterns based on three types of distribution (uniform, geometric and lognormal) with a range of units from 10 to 500 000. First, simulated patterns containing a diversity of around 1000 units or more gave patterns similar to those obtained in experiments. Second, the number of bands or peaks saturated quickly to about 35 and were unrelated to the degree of diversity. Finally, assuming lognormal distribution, we used an estimator of diversity on in... |
| Tipo: Journal Article |
Palavras-chave: DENATURING GRADIENT ELECTROPHORESIS; SINGLE STRAND CONFORMATION POLYMORPHISM. |
| Ano: 2006 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2007ca36bcb3&uri=/notices/prodinra1/2008/02/ |
| |
|
|
| Loisel, P.; Cartigny, P.. |
| The safeguarding of resources is one of the principal subjects of halieutics studies. Among the solutions proposed to avert the disappearance of species, the setting in place of preservation (no take) reserves is often mentioned. Most work on this subject, theoretical as well as applied, was undertaken in recent years. In this paper, we seek to compare two different models presented in existing literature by highlighting their underlying assumptions. Both models were derived from what is often referred to as the “model of Schaefer–Clark” (reference to the work of the last author on Mathematical Bioeconomics: Clark [C.W. Clark, Mathematical Bioecomics: The Optimal Management of Renewable Resources, 2nd ed., John Wiley and Sons, New-York, 1990]). We show... |
| Tipo: Journal Article |
Palavras-chave: SYSTEME DYNAMIQUE; VARIATION DE CALCUL; HORIZON INFINIE; RESERVE MARINE; MODELE BIOECONOMIQUE; RESSOURCE HALIEUTIQUE; CALCUL DES VARIATIONS; BIODIVERSITE MARINE HALIEUTICS RESOURCES; DYNAMICAL SYSTEM; CALCULUS OF VARIATION; INFINITE HORIZON; MARINE RESERVE; BIOECONOMIC MODEL. |
| Ano: 2009 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20094013dca2&uri=/notices/prodinra1/2010/12/ |
| |
|
| |
|
|
| Goffinet, B.; Beckmann, J.; Boichard, D.; Causse, M.; Charcosset, A.; Chevalet, C.; Christophe, C.; Colleau, J.J.; Demenais, F.; Durel, C.E.; Elsen, J.M.; Foulley, J.L.; Gallais, A.; Gotz, K.U.; Hospital, H.; Kremer, A.; Lorieux, M.; Lefort-Buson, M.; Le Roy, P.; Loisel, P.; Mangin, B.; Maurice, A.; Perrier, X.; Pons, O.; Rebaï, A.; Rodolphe, F.; San Cristobal, M.; Vu Tien Khang, J.. |
| Nous présentons ici les travaux s’inscrivant dans le cadre du projet «Mathématiques et marqueurs moléculaires», en abrégé «MMM». Ces travaux ont pour objet l’identification et l’utilisation de gènes contrôlant des caractères quantitatifs - ou QTL (quantitative trait loci) - à partir de l’information issue des phénotypes, de la généalogie et de marqueurs moléculaires. Une première partie concerne la mise en évidence de gènes à effet majeur et l’utilisation de ces gènes en sélection, à partir d’informations phénotypiques (mesures sur le caractère dont le contrôle génétique est recherché) et généalogiques (relations de parenté entre individus de la population mesurée). La deuxième partie concerne l’utilisation conjointe de ces informations... |
| Tipo: Journal Article |
Palavras-chave: MAXIMUM DE VRAISEMBLANCE; CARACTERE QUANTITATIF; SELECTION DIRIGEE; AMELIORATION DES PLANTES; CARTE GENETIQUE. |
| Ano: 1994 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9400023110039598&uri=/notices/prodinra1/2007/11/ |
| |
|
| |
|
| |
|
|
|
