title: Algal phagostimulants for marine herbivorous gastropods.
abstract: Methanol extracts of the green algaUlva pertusa contain four kinds of glycerolipids that are active as feeding-stimulants for marine herbivorous gastropods. These compounds are digalactosyldiacylglycerol (DGDG), 1,2-diacylglycerly-4'-O-(N,N,N-trimethyl)-homoserine (DGTH), 1-monoacylglyceryl-4'-O-(N,N,N-trimethyl)-homoserine (MGTH), and 6-sulfoquinovosyldiacylglycerol (SQDG). The various gastropods exhibit marked specificity, however, as young abaloneHaliotis discus respond to DGDG and DGTH at minute dosages of 20-30 μg/sample zone, but do not respond to 300 μg of SQDG, which is a phagostimulant for two other kinds of gastropods,Turbo comutus andOmphalius pfeifferi.
authors.affiliation: Research Laboratory of Marine Biological Science, Faculty of Agriculture, Shizuoka University, Mochimune, 422-01, Shizuoka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Sakata
authors.forename: T
authors.initials: T
authors.lastname: Sakura
authors.forename: K
authors.initials: K
authors.lastname: Ina