Essays about: "European whitefish"
Showing result 1 - 5 of 10 essays containing the words European whitefish.
-
1. Associations between body size polymorphism in Arctic charr and benthic invertebrate communities – clues to mechanisms for population differentiation?
University essay from SLU/Dept. of Wildlife, Fish and Environmental StudiesAbstract : Many fish populations in the north have divided into coexisting ecotypes that differ in body size. While such polymorphic fish populations have been studied for many years, the understanding of how different types of selection contribute to the formation of dwarf- and giant ecotypes remains limited. READ MORE
-
2. Sympatric Divergence in Whitefish Dwarfs : An investigation of phenotype-environment correlations in whitefish dwarfs
University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskapAbstract : Recent studies have found populations of European Whitefish (Coregonus lavaretus) to be under the process of divergence induced by a predator (pike, Esox lucius). This has caused whitefish to diverge into similar ecotypes but in separate lakes. READ MORE
-
3. Effects of whitefish speciation on piscivorous birds : A dietary study of piscivorous birds in central and northern Sweden
University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskapAbstract : The ecological communities we observe today are a product of the bidirectional interactions between ecological and evolutionary processes. Although the effects of ecological processes on population divergence and speciation have been studied extensively, far less is known about the effects of divergence and speciation on ecological dynamics. READ MORE
-
4. Predation as a driver of reproductive isolation : Differences in predation risk between whitefish (Coregonus lavaretus) spawning habitats
University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskapAbstract : The origin and maintenance of much of natural biodiversity can likely be explained by theecological speciation theory. Ecological speciation is defined as the process whenreproductive isolation arises through divergent selection caused by ecological factors, such asbiotic interactions and abiotic conditions. READ MORE
-
5. Temporal spawning divergence in European whitefish (Coregonus lavaretus) : The first steps towards reproductive isolation in young populations (70-171 years)
University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskapAbstract : A critical step in ecological speciation is the development of reproductive isolation. The processes leading up to reproductive isolation are difficult to study since they often occur over very long time periods. READ MORE
