Musculature in polychaetes: comparison of Myrianida prolifera (Syllidae) and Sphaerodoropsis sp (Sphaerodoridae)

DC FieldValueLanguage
dc.contributor.authorFilippova, Anna
dc.contributor.authorPurschke, Guenter
dc.contributor.authorTzetlin, Alexander B.
dc.contributor.authorMueller, Monika C. M.
dc.date.accessioned2021-12-23T16:07:49Z-
dc.date.available2021-12-23T16:07:49Z-
dc.date.issued2010
dc.identifier.issn10778306
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/8074-
dc.description.abstractThe relationship of the polychaete taxa Syllidae and Sphaerodoridae within Phyllodocida is still unresolved: phylogenetic analyses either show them as sister groups or more widely separated. The present article aims to provide information about the structure of the muscular system that could be essential for understanding their relationship. A crucial point is whether the body wall contains circular muscles, which has recently been shown to be absent in more taxa than previously known. The F-actin filaments in members of Myrianida prolifera (Syllidae) and Sphaerodoropsis sp. (Sphaerodoridae) were labeled with phalloidin and their three-dimensional relationships reconstructed by means of confocal laser scanning microscopy. Among the noteworthy differences that emerged between the species are (1) members of M. prolifera possess four, those of Sphaerodoropsis sp. eight, longitudinal muscle strands; (2) the body wall in M. prolifera contains transverse fibers in a typical, supralongitudinal position, while in Sphaerodoropsis sp., corresponding fibers lie beneath the longitudinal strands; (3) pro- and peristomium in M. prolifera have no distinct F-actin fibers, while five longitudinal pairs and three single transverse muscular fibers shape the anterior end in Sphaerodoropsis sp.; (4) the proventricle of M. prolifera comprises primarily radial muscle fibers arranged in distinct rows, while in Sphaerodoropsis sp. the axial proboscis consists of longitudinal and circular fibers and radial fibers are lacking; (5) in M. prolifera, the proximal and distal sections of the two anteriormost pairs of dorsal cirri possess longitudinal myofilaments, which are separate from the body wall musculature; by contrast, all appendages in Sphaerodoropsis sp. do not; (6) both species have bracing muscles: in M. prolifera they are positioned above the longitudinal fibers, whereas in Sphaerodoropsis sp. they are uniquely positioned between longitudinal and sublongitudinal transverse fibers. These results do not support a sister-group relationship of Syllidae and Sphaerodoridae. In addition, Sphaerodoropsis sp. is yet another example in the list of polychaetes lacking typical circular muscles in the body wall.
dc.description.sponsorshipZKFG of the University of Osnabruck; We thank the head of the zoology department, Prof. Dr. A. Paululat, Osnabruck, for discussions and support. We are grateful to two anonymous reviewers and their useful comments and suggestions for improvements. A grant from the DFG allowing A.F. to carry out the experimental work in Osnabruck is gratefully acknowledged. We thank C. Franken and D. Suschenko for assistance with the TEM sectioning. M.C.M.M. wishes to thank Prof. Dr. Tilly Bakker-Grunwald for mental and the ZKFG of the University of Osnabruck for financial support.
dc.language.isoen
dc.publisherWILEY
dc.relation.ispartofINVERTEBRATE BIOLOGY
dc.subject3-DIMENSIONAL RECONSTRUCTION
dc.subjectANNELIDA
dc.subjectBODY-WALL MUSCULATURE
dc.subjectCHRYSOPETALIDAE
dc.subjectCLSM
dc.subjectEVOLUTION
dc.subjectF-actin
dc.subjectMarine & Freshwater Biology
dc.subjectMORPHOLOGICAL DATA
dc.subjectMUSCLE SYSTEM
dc.subjectphalloidin
dc.subjectPHYLOGENY
dc.subjectPOSITION
dc.subjectproventricle
dc.subjectZoology
dc.titleMusculature in polychaetes: comparison of Myrianida prolifera (Syllidae) and Sphaerodoropsis sp (Sphaerodoridae)
dc.typejournal article
dc.identifier.doi10.1111/j.1744-7410.2010.00191.x
dc.identifier.isiISI:000277623700008
dc.description.volume129
dc.description.issue2
dc.description.startpage184
dc.description.endpage198
dc.contributor.orcid0000-0002-2572-3390
dc.contributor.researcheridAAU-9660-2021
dc.identifier.eissn17447410
dc.publisher.place111 RIVER ST, HOBOKEN 07030-5774, NJ USA
dcterms.isPartOf.abbreviationInvertebr. Biol.
crisitem.author.deptFB 05 - Biologie/Chemie-
crisitem.author.deptidfb05-
crisitem.author.orcid0000-0002-2572-3390-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.netidPuGu978-
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