Arne W. Nolte

TL;DR: A perspective on the context and evolutionary significance of hybridization during speciation is offered, highlighting issues of current interest and debate and suggesting that the Dobzhansky–Muller model of hybrid incompatibilities requires a broader interpretation.

TL;DR: The D1-D2 LSU region is a suitable marker region for applications in DNA based species identification and should be considered to be routinely used as a marker complementing broad scale studies based on mitochondrial markers.

TL;DR: It is argued that non-model species studied in their ecological context such as whitefish will play an increasingly important role in generalizing knowledge of speciation and the joint use of recent biotechnological developments will provide a powerful means to address issues raised by observations made to date.

TL;DR: It is argued that the identification and analysis of the dynamic processes that occur after the first contact deserve specific attention, because this is the phase where hybrid speciation is most different from other forms of speciation.

TL;DR: It is concluded that hybridization between long separated groups has lead to the fast emergence of a new, adaptationally distinct sculpin lineage that possesses a unique ecological potential that does not occur in either of the source populations from the Rhine or the Scheldt, which allows the colonization of new habitats that have been free of sculpins.