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dc.contributor.authorShinn, Andrewen_UK
dc.contributor.authorSommerville, Christinaen_UK
dc.contributor.authorBron, Jamesen_UK
dc.contributor.authorGibson, Daviden_UK
dc.description.abstractIn species of the monogenean helminth Gyrodactylus, the opisthaptor is the main organ of attachment to the host. The opisthaptor comprises two large centrally positioned hooks or hamuli and sixteen peripherally distributed marginal hooks. This paper describes the functional morphology and the mechanism and sequence of attachment in this species. Information on the attachment process was gathered from observations of live gyrodactylids, from transmission electron microscopy, from scanning electron microscopy of skeletal elements, and by histochemical and X-ray elemental analysis of hook chemical composition. The marginal hooks provide the principal force of attachment whilst the hamuli are not actively employed in the process of attachment. Instead, the hamuli provide a system preventing accidental dislodgement and assist the action of the marginal hooks. Attachment is achieved by the alternating action of two systems of muscles attached respectively to the hamuli and to the marginal hooks. Relaxation or contraction of the muscles connected to the hamuli manoeuvres the hamuli over the extremities of the accessory ventral bar and allows them to pivot around their longitudinal axis, effectively raising or lowering the opisthaptoral dome. Under reduced opisthaptoral tension, the independent gaffing activity of the marginal hooks ensures a secure attachment to the host's epidermis. Repositioning of the hamuli then raises the opisthaptoral dome to tension the peripheral marginal hooks. The sequence of attachment is complete when all the muscles associated with the hooks are in a state of relaxation but are held securely and under tension by the surrounding, stretched, opisthaptoral dome.en_UK
dc.relationShinn A, Sommerville C, Bron J & Gibson D (2003) Comments on the mechanism of attachment in species of the monogenean genus Gyrodactylus. Invertebrate Biology, 122 (1), pp. 1-11.
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.titleComments on the mechanism of attachment in species of the monogenean genus Gyrodactylusen_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[Shinn Sommerville Bron Gibson 2003 InvertebrateBiology.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.citation.jtitleInvertebrate Biologyen_UK
dc.type.statusVoR - Version of Recorden_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.contributor.affiliationThe Natural History Museumen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorShinn, Andrew|0000-0002-5434-2685en_UK
local.rioxx.authorSommerville, Christina|en_UK
local.rioxx.authorBron, James|0000-0003-3544-0519en_UK
local.rioxx.authorGibson, David|en_UK
local.rioxx.projectInternal Project|University of Stirling|
local.rioxx.filenameShinn Sommerville Bron Gibson 2003 InvertebrateBiology.pdfen_UK
Appears in Collections:Aquaculture Journal Articles

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