Des barrages et des poissons
Con el objetivo de estudiar el efecto de la disponibilidad de recursos sobre la amplitud del nicho trófico en peces de la Amazonia boliviana, comparamos los nichos isotópicos (como sustituto del nicho trófico) de tres especies de peces (Acestrorhynchus altus, Hoplias malabaricus y Pygocentrus nattereri) en un gradiente de disponibilidad de presas. ...
Working towards a future Rhine Sturgeon Action Plan the outmigration pathways of stocked juvenile European sturgeon (Acipenser sturio L., 1758) were studied in the River Rhine in 2012 and 2015 using the NEDAP Trail system. A total of 87 sturgeonof 3 to 5 years old (n = 43 in 2012, n = 44 in 2015) were implanted with transponders and released in May...
Published in Biology letters
Many diadromous fishes such as salmon and eels that move between freshwater and the ocean have evolved semelparous reproductive strategies, but both groups display considerable plasticity in characteristics. Factors such as population density and growth, predation risk or reproduction cost have been found to influence timing of maturation. We inves...
Rattus rattus est le réservoir de nombreux agents pathogènes zoonotiques en Afrique de l'Ouest. Evaluer le risque d'exposition de l'Homme à ces agents pathogènes nécessite, au préalable, de comprendre la dynamique de population de Rattus rattus. A cette fin, un modèle à compartiments décrivant l'évolution de la population en trois stades consécutif...
This is the first inter-continental comparative assessment of diatom richness and species abundance distribution (SAD) along spatial, climatic, and water chemistry gradients using stream data from the US and Finland. We tested a number of hypotheses about the causes of variability in richness and by extension, the SAD, including the metabolic theor...
Le foyer de Trypanosomiase Humaine Africaine de Bonon est le plus actif de Côte d'Ivoire (deuxième pays le plus touché par cette pathologie en Afrique de l'Ouest). Dans cet écosystème forestier, l'augmentation des densités humaines, sous le poids de l'accroissement naturel et de l'immigration agricole, a profondément modifié le paysage. La localisa...
An international sampling program investigating the causes of the decline of American eels (Anguilla rostrata) and European eels (Anguilla anguilla) in the St. Lawrence (Canada) and Gironde (France) rivers systems provided the opportunity to compare early growth of eels of each species among habitats using back-calculated size