Is the biological species concept showing its age?

A recent paper by Chung-I Wu in the Journal of Evolutionary Biology questions the value of the popular biological species concept (BSC) and offers an alternative ‘genic’ concept based on possessing ‘loci of differential adaptation.’ Wu suggests that recent empirical results from genetic studies of speciation necessitate this revision. Several prominent evolutionary biologists responded in the same issue, many noting excitement over the recent empirical results, few agreeing with an abandonment of the BSC, and none wholeheartedly embracing the new genic concept.