Reproductive Cycle of Marphysa sanguinea (Montagu, 1815) (Polychaeta: Eunicidae) in the Lagoon of Tunis
Figure 3
Spermatogenesis. (a) Coelomic fluid from a male collected in June showing early germ cells arranged as mulberry-like clusters; (b) clusters of spermatogonia (Sg) and primary spermatocytes (Scy) in the coelomic fluid of a male collected in July; (c) coelomic fluid from a male collected in October containing sperm in all stages of development: spermatogonia (sg), primary spermatocytes (Scy), and spermatozoa (Spz); (d) coelomic fluid of a mature male collected in December showing free sperm.
