Waterborne and Surface-Associated Carbohydrates as Settlement Cues for Larvae of the Specialist Marine Herbivore Alderia modesta.

From: The Biological Bulletin | Date: August 1, 1999| Author: | Copyright information

PATRICK J. KRUG [1,*]

ADRIANA E. MANZI [2]

Abstract. Larvae of the specialist marine herbivore Alderia modesta (Opisthobranchia: Ascoglossa) metamorphose in response to a chemical settlement cue from the alga Vaucheria longicaulis, the obligate adult prey. Bioactivity coeluted with both high and low molecular weight carbohydrates in solution, and with insoluble high molecular weight carbohydrates associated with the algal cell wall. Larvae metamorphosed in response to water conditioned by V. lon gicaulis, as well as to frozen and homogenized algal tissue. The inducer was ...

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