Gametogenesis in Haematococcus pluvialis Flotow (Volvocales, Chlorophyta)

Abstract An effective method of inducing gametogenesis in Haematococcus pluvialis Flotow (Volvocales, Chlorophyta) is described. Cultures starved for at least one month and then supplied with fresh medium produced gametes the following day. Isolated gametocysts initiated subcultures without syngamy, suggesting parthenogenetic development. The gametes are illustrated by light and electron micrographs.