Das Projekt "Testing allopractic and ecological speciation in a morphologically and genetically diverse species flock of viviparous freshwater gastropods (Mollusca: Cerithioidea: Pachychilidae) in the ancient lakes of Sulawesi, Indonesia" wird vom Umweltbundesamt gefördert und von Universität Berlin (Humboldt-Univ.), Zentralinstitut Museum für Naturkunde, Institut für Systematische Zoologie durchgeführt. This project aims to test models of speciation, especially ecological speciation, by using freshwater snails in the ancient lakes on Sulawesi, Indonesia, as model organisms. Methods employed include the collection of quantitative ecological data, morphological and morphometric analyses, population genotyping (AFLP) and mapping of extrinsic barriers in the Malili lake system (South Sulawesi) . Models of speciation thus gained shall be compared to those emerging for other lake taxa, mainly fishes and crabs, studied by cooperating research teams.