Thesis Summary

1 Summary “Alimentary barcoding”: development of a new molecular ecology tool for freshwater environments. Example through studying Durance hybrid zone between the two French Chondrostoms. Hydroelectric settlement could lead to affect trophic... More

1 Summary “Alimentary barcoding”: development of a new molecular ecology tool for freshwater environments. Example through studying Durance hybrid zone between the two French Chondrostoms. Hydroelectric settlement could lead to affect trophic resources availability for fish populations, mainly for benthos feeder species. Previous works demonstrated that in the Durance River (an highly man-impacted river), many morphological and ecological characteristics were moved in compare to reference station’s populations for the two benthic feeders species, Chondrostoma toxostoma toxostoma (Ctt, endemic species) and Chondrostoma nasus nasus (Cnn, introduced species) and their hybrids. To better understand which environmental factors are responsible of these differences, we studied the diet behavior of the two Chondrostoma species. The main goal of this thesis was so to study the diet behavior of the two Chondrostoma species and their hybrids in the Durance River and to com Less