Search
Search Results
-
Variations nycthémérales chez plusieurs taxons zooplanctoniques au cours de séries chronologiques de 24 heures dans le golfe de FOS-sur-Mer (Anse de Carteau et enceinte portuaire)
Preliminary review of diel variations in several zooplanktonic taxa during 24 h chronological series in the Gulf of Fos (Mediterranean sea).
Time...
-
Ultrastructure d'une cyanophycée aérienne calcifiée cavernicole:Scytonema julianum (Frank) Richter (Hormogonophycideae, Nostocales, Scytonemataceae)
The ultrastructure of the atmophytic lime-encrusted filamentous blue-green alga Scytonema julianum (Frank) Richter which grows in caves, is studied...
-
Sur quelques Mesocyclops (Crustacea, Copepoda)
After a review of what characteristics have to be taken in account to determine a Copepoda of the genus Mesocyclops , 14 species of this genus are...
-
Variabilités verticale et temporelle des acides gras d'un phytoplancton lacustre au cours d'un cycle nycthéméral
Vertical and temporal variability in the content and composition of fatty acids in the lake phytoplankton were studied during a diel cycle (48 h)....
-
Mise au point sur l'incidence du virus Yo et méthodes de lutte mises en oeuvre en France pour la production de semences de pommes de terre
Potato seed health status is currently at a high level in the three main seed growing regions in France (Table 1). PVY is the most common virus and a...
-
In vitro: Régénération de plants de fraisier à partir de fragments de pétioles et de bourgeons floraux
Strawberry plants have been regenerated from petioles and flower buds Petiole segments derived from strawberry plants (Fragaria vesca L. and Fragaria x ananassa...
-
Facteurs contrôlant la production primaire dens deux rivières soumises a une forte réduction de débit
The effects of river diversion on phytoplankton primary production and biomass in the downstream part of two rivers were studied in relation to...
-
Age et croissance de la truite lacustre (Salmo trutta lacustris L.) du Léman
The age and growth of adult Lake Geneva trout ( Salmo trutta lacustris L.) caught from 1964 to 1974 for mark-and-recapture experiments was studied by...
-
Typologie des rivières oligotrophes du massif Ardennais (Belgique) par l'analyse multivariée de relevés de diatomées benthiques
Typology of oligotrophic streams of the Ardenne (Belgium) by multivariate analysis of benthic diatoms records.
During three years, samples of water...
-
Résistance et viabilité des gamètes d'Omble de fontaine, Salvelinus fontinalis, à différents pH
Variations in acidity were shown to have pronounced effects on the gametes of Salvelinus fontinalis collected from populations living in acid or...
-
Régime alimentaire des alevins de Gardons (Rutilus rutilus (L.)) dans un port du lac Léman. Comparison avec la nourriture disponible
In order to determine the food preferences of young roach, gut contents of roach fry ( Rutilus rutilus (L.)) were compared with the evolution of the...
-
Application des méthodes ELISA et immunofluorescence pour la detection deCorynebacterium sepedonicum: réponses variétales de la pomme de terre au flétrissement bactérien
An ELISA method was developed to detect C. sepedonicum : three immunsera were needed, at least two from different animals. A relationship between...
-
Enquête sur les maladies fongiques de l'arachide (Arachis hypogaea) en Côte-d'Ivoire. II. Epidémiologie de la rouille de l'arachide (Puccinia arachidis)
A survey was conducted in small farmers' fields in Ivory Coast to study the foliar diseases of groundnut caused by fungi. The results were...
-
Enquête sur les maladies fongiques de l'arachide (Arachis hypogaea) en Côte-d'Ivoire. I. Méthodes d'enquête et étude descriptive: les conditions culturales et les principales maladies
Groundnut diseases were surveyed in the various traditional crop** regions of Ivory Coast during 1982, 1983 and 1984. The methods used during the...
-
Effects du NaCl sur les Capacités Oxydases durant la Germination de Semences de Plantes Sensible ou Tolerante au Sel
IAA oxidase, catalase and peroxidase activities of seedlings (the first day of radicle emergence) or organs of young plants (the fifth day of radicle...
-
Dynamique de la population de Truite commune (Salmo trutta) d'un ruisseau breton (France): les géniteurs sédentaires
Population dynamics of brown trout ( Salmo trutta ) in a breton stream (France): The non-migrant spawners.
The biological factors of the population...
-
Influence des traitements phytosanitaires sur les biocoenoses du phytoplancton limnique
We used specific diversity of phytoplankton and chlorophyll concentrations as a measure of algal biomass in ponds located in agricultural areas where...
-
Influence du lindane sur le métabolisme respiratoire d'Asellus aquaticus L. Relation concentration — perturbation
The respiratory metabolism of Asellus aquaticus L. was investigated after short-term exposure to lindane poisoning at 15 °C. After 48 h, oxygen...
-
Les Stephanodiscus (Diatomées) du Lac Léman: Description d'une nouvelle espèce, Stephanodiscus irregularis; mise au point taxonomique et distributions saisonnières
The Stephanodiscus (Diatoms) of Lake Geneva: Taxonomic changes, description of a new species ( Stephanodiscus irregularis ) and seasonal distributions.
B...