Rune Knudsen

TL;DR: The data for morphometry and behaviour, but not growth, provide evidence for genetic differences between the two Arctic charr morphs of Fjellfrosvatn.

TL;DR: Detailed analyses of the parasite frequency distributions for fish with different habitat or feeding preferences evidently show how heterogeneity in trophic behavior contributes strongly to the commonly observed aggregation of helminths among hosts under natural conditions.

TL;DR: Evidence of high stability of individual trophic niches of a fish predator from a 15-year study is provided and a case of sympatric speciation into two incipient forms diverging along the littoral-pelagic resource axis is suggested.

TL;DR: Results indicate that extensive feeding immediately after sea entrance may be more common for post-smolts in the northern and middle parts of Norway, than in the southern fjords, which may be due to spatial and temporal differences in prey availability within and between the different types of fjord systems.

TL;DR: It is argued that an integrated view, which merges ecology, evolution and developmental biology (eco evo devo) on an equal footing, is needed to understand the multifaceted role of the environment in simultaneously determining the development of the phenotype and the nature of the selective environment, and how organisms in turn affect the environment through eco evo and eco devo feedbacks.