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Fig. 3 | BMC Zoology

Fig. 3

From: Nerves innervating copulatory organs show common FMRFamide, FVRIamide, MIP and serotonin immunoreactivity patterns across Dinophilidae (Annelida) indicating their conserved role in copulatory behaviour

Fig. 3

Musculature 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 muscle

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