Three-dimensional reconstruction of the F-actin musculature of Dorvillea kastjani (Dorvilleidae: Polychaeta) by means of phalloidin-labelling and cLSMстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Авторы:
Filippova A.,
Purschke G.,
Tzetlin A.,
Muller M.
Аннотация:This paper is part of a series investigating the muscular architecture of various “Polychaeta”, aiming to ascertain
the presence of circular muscles in the body wall, which have recently been thought to be lacking more often than hitherto
known. The F-actin muscular subset of Dorvillea kastjani was labelled with phalloidin and the architecture three-dimensionally
reconstructed by means of confocal laser scanning microscopy. Three pairs of longitudinal, two transverse and
numerous radial muscles ensure shape and flexibility of the prostomium. Mobility of the sub-biramous parapodia and their
chaetae is achieved by seven different muscle types. The body wall contains transverse and bracing muscles and in total five
longitudinal muscle strands: two dorsolateral, two ventral and one ventromedial. Numerous transverse fibres extend from the
dorsal side peripherally and ventrally and become concentrated into six or seven pairs of bundles per segment on the ventral
side. They terminate before reaching the midline, leaving a gap of only a few micrometres between them. Within the intersegmental
furrows these fibres form complete rings in a supralongitudinal postion. Thus, true circular fibres exist in D. kastjani
but are weakly developed.