SICB Division of Invertebrate Zoology (DIZ)

DIZ Researchers Database Entry

Bruno Pernet

Form and function of annelid larvae
I'm interested in the functional morphology and evolution of embryos and larvae of marine invertebrates, especially annelids. Annelid larvae are unusually diverse in form and function (relative to members of most of most other phyla), and provide an interesting comparative system for exploring hypotheses on the evolution of larval traits. Recent work on annelid larvae in my lab has involved describing vestigial feeding structures in the nonfeeding larvae of some sabellids, describing the unusual feeding mechanism of the larvae of pectinariids, and clarifying the nutritional biology and development of larvae of the poecilogonous spionid Streblospio benedicti (recently-released larvae of S. benedicti that developed from small [left] or large eggs [right] are shown above). Some students in my lab work on annelid larvae, but others use a variety of tools to address diverse topics in invertebrate biology, including such things as variation in maternal provisioning and larval chemical defenses in bryozoans, and the phylogeography of estuarine crustaceans.