Fig. 7

Schematic representation of eight selected Typosyllis antoni specimens monitored during anterior regeneration after amputation between chaetigers 35 and 36 (Fig. 2, site 3). Numbers in the lower right corner refer to each specimen. Grey numbers denote days post amputation, asterisks indicate that at least one day before the specimen was not observed. Last drawing of each specimen is always the last day of observation. a Specimen with subsequent development of two male stolons. b Specimen developing only one female stolon. c Individual with scission site some segments in front of the male stolon. d After developing a female stolon, this specimen developed an aberrant sequential stolon composed of three partially incomplete male stolons, which later detached as a whole. e The initially developed male stolon was transformed into an aberrant sequential one, the second stolon looked normal. f The developed male stolon was much longer than usually and later became an aberrant one composed by two subsequent stolons, which detached as a whole. g This specimen lost sequentially several anterior segments resulting in a male stolon with only one additional stock segment. h After developing an aberrant male stolon, this specimens broke in two parts, which both started regeneration of each correspondent missing body end. After that, the anterior body part developed a normal male stolon