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dc.date.accessioned2019-11-22T11:08:53Z
dc.date.available2019-11-22T11:08:53Z
dc.date.issued2019-10-16
dc.identifierdoi:10.17170/kobra-20191122802
dc.identifier.urihttp://hdl.handle.net/123456789/11363
dc.description.sponsorshipGefördert durch den Publikationsfonds der Universität Kassel
dc.language.isoeng
dc.subjectmyoanatomyeng
dc.subjectmusculatureeng
dc.subjectvelvet wormeng
dc.subjectonychophoraeng
dc.subjecttomographyeng
dc.subjectthree-dimensional reconstructioneng
dc.subject.ddc570
dc.titleFunctional morphology of a lobopod: case study of an onychophoran legeng
dc.typeAufsatz
dcterms.abstractSegmental, paired locomotory appendages are a characteristic feature of Panarthropoda—a diversified clade of moulting animals that includes onychophorans (velvet worms), tardigrades (water bears) and arthropods. While arthropods acquired a sclerotized exoskeleton and articulated limbs, onychophorans and tardigrades possess a soft body and unjointed limbs called lobopods, which they inherited from Cambrian lobopodians. To date, the origin and ancestral structure of the lobopods and their transformation into the jointed appendages are all poorly understood. We therefore combined high-resolution computed tomography with high-speed camera recordings to characterize the functional anatomy of a trunk lobopod from the onychophoran Euperipatoides rowelli. Three-dimensional reconstruction of the complete set of muscles and muscle fibres as well as non-muscular structures revealed the spatial relationship and relative volumes of the muscular, excretory, circulatory and nervous systems within the leg. Locomotory movements of individual lobopods of E. rowelli proved far more diverse than previously thought and might be governed by a complex interplay of 15 muscles, including one promotor, one remotor, one levator, one retractor, two depressors, two rotators, one flexor and two constrictors as well as muscles for stabilization and haemolymph control. We discuss the implications of our findings for understanding the evolution of locomotion in panarthropods.eng
dcterms.accessRightsopen access
dcterms.creatorOliveira, Ivo de Sena
dcterms.creatorKumerics, Andreas
dcterms.creatorJahn, Henry
dcterms.creatorMüller, Mark
dcterms.creatorPfeiffer, Franz
dcterms.creatorMayer, Georg
dc.relation.doidoi:10.1098/rsos.191200
dc.relation.issupplementedbydoi:10.6084/m9.figshare.c.4668698
dc.type.versionpublishedVersion
dcterms.source.identifierISSN 2054-5703
dcterms.source.issueIssue 10
dcterms.source.journalRoyal Society Open Science
dcterms.source.pageinfo191200
dcterms.source.volumeVolume 6


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