Fig. 5

Anterior regeneration in Typosyllis antoni specimens amputated directly in front of the proventricle (Fig. 2, site 1), light microscopic pictures. All images are dorsal views of the anterior end except a (dorso-lateral), anterior is left in all images. The dotted line indicates the site of amputation. a 4 dpa. The prostomium (pr) and its appendages (lat, ps) are redeveloping but segments are not visible. b 10 dpa. Two more segments (I.-II.) have developed. c 12 dpa and d 14 dpa. Segments (III.-VI.) were added sequentially directly anterior to the amputation site. Abbreviations: I.-VI., regenerated segments; dci, dosal cirrus; dtc, dorsal tentacular cirrus; mat, median antenna; lat, lateral antenna; pr, prostomium; ps, palpus; vtc, ventral tentacular cirrus. Scale bars = 100 μm