ABSTRACT
Ultrastructural studies of spermiogenesis and the morphology spermatozoa in annelids have been reviewed several times (Ferraguti 1983, 1999; Ferraguti and Erseus 1999; Franzen and Rice 1988; Jamieson and Rouse 1989; Rice 1992; Rouse 1999a). Here an introduction to the concepts and literature is given as well as an update on the more recent findings. All currently available ultrastructural descriptions of sperm ultrastructure in non-clitellate annelids are provided in Table 3.1. For information on studies on sperm in Clitellata see Chapter 8 where sperm of oligochaetes is comprehensively reviewed and Chapter 9 for information on Hirudinida.
