Fig. 4From: Relative growth and reproductive cycle of the date mussel Lithophaga lithophaga (Linnaeus, 1758) sampled from the Bizerte Bay (Northern Tunisia)Histological sections through the gonad of L. lithophaga, showing two cases of hermaphroditism (A1, A2). Lumina of the gonadic tubules filled with residual spermatozoa (A1a), tubule walls consisting of spermatogonia and spermatocytes or oogonia (A1b, A2a, A2b). Spg spermatogonia, Spz spermatozoa, Oog oogoniaBack to article page