“…Berger el a/., 1979; Hanusova and Havlik, 1979), fatty acids and lipids (including sterols which Morris and Culkin (1977) noted are present in many organisms) by bacteria, phytoflagellates, bivalves and fish (e.g. Billmire and Aaronson, 1976; Teshima and Kanazawa, 1978; Yano and Ishio, 1978; Gauthier et a/., 1978; Halvorson and Martin, 1980), glycollic acid and glycollates by algae (e.g. Bolze and Soeder, 1978;Colman, 1978), carbohydrates by algae, nannoplankton, diatoms and fish Orr, 1962, 1964 Mague et al, 1980), peptides by algae (e.g.…”