Mollusca Research

Systematics, speciation, and biogeography of the gastropod genus Haminoea​ in the Atlantic and Eastern Pacific Oceans


Haminoea orbignyana from Portugal
Haminoea orbignyana from Portugal

Haminoea are bubble-shelled marine snails with an estimated 15-20 species in the Atlantic and Eastern Pacific Oceans. The majority of species is known from their shells only, which are all very similar making the identification of species very difficult. This project is the first attempt to incorporate all previously available and new data from shell structure, anatomy and molecular sequences in a systematic revision, phylogenetic and biogeographic analysis of the genus Haminoea. The main objectives are to review and clarify the systematics of the genus, the relationships between species, and the role of the closure of the Isthmus of Panama during the Pliocene with consequent separation of the Atlantic and Eastern Pacific oceans in the speciation and biogeography of Haminoea.