Involvement of lectins in the settlement and metamorphosis of marine invertebrate larvae
Reports of preferential settlement of some marine invertebrate larvae on surface films composed of bacteria and other microorganisms exist in the literature. However, the biochemical processes controlling the interactions involved in the settlement are not completely understood. It has been demonstrated that larvae of the spirorbid polychaete Janua (Dexiospira) brasiliensis settle and metamorphose on films of bacteria. We have proposed a biochemical model for settlement and metamorphosis of the larvae involving lectins (sugar-binding proteins and glycoproteins). We have evidence that a lectin on the surface of the larvae "recognizes" and binds to a glycoconjugate in the exopolymer of marine bacteria. The implications of this model for settlement of invertebrate larvae will be discussed.
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Document Type: Research Article
Publication date: 1985-09-01
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