Fig. 3From: Nerves innervating copulatory organs show common FMRFamide, FVRIamide, MIP and serotonin immunoreactivity patterns across Dinophilidae (Annelida) indicating their conserved role in copulatory behaviourMusculature of adult dwarf males of Dinophilus gyrociliatus. Maximum intensity projections of CLSM-image stacks of phalloidin-treated specimens. a) Lateral and b) ventral overview (complete z-stack), c-d) details of copulatory organ (lateral views): c) penis sheath (3D crop of z-stack), d) sagittal section through lateral part of penis cone and penis sheath, e) sagittal section through middle part of penis sheath, penis cone and openings of gland ducts. Abbreviations: cm1–6 – circular muscle 1–6, co – copulatory organ (penis), dlm – dorsal longitudinal muscle, dvm – dorsoventral muscle, gdo – gland duct openings, gp – gonopore, pcm – penis cone muscle, ps – penis sheath, sph1,2 – sphincter muscle 1,2, vllm – ventrolateral longitudinal muscleBack to article page