Histological organization of the intestine in the crayfish Procambarus clarkii

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dc.contributor.authorTo, Terence H.en
dc.contributor.authorBrenner, Tracy L.en
dc.contributor.authorCavey, Michael J.en
dc.contributor.authorWilkens, Jerrel L.en
dc.contributor.departmentBiological Sciencesen
dc.contributor.facultyFaculty of Scienceen
dc.contributor.institutionUniversity of Calgaryen
dc.date.accessioned2006-08-15T15:54:53Z
dc.date.available2006-08-15T15:54:53Z
dc.date.issued2004-04
dc.descriptionThe definitive version is available at www.blackwell-synergy.com
dc.description.abstractSix longitudinal ridges span the length of the intestine in the crayfish Procambarus clarkii . A simple columnar epithelium with tetralaminar cuticle lines the lumen. Folds of the epithelium overlie a dense irregular connective tissue packed with mixed acinar (alveolar) glands. Mucous secretions are probably involved with formation and lubrication of faecal strings; neither the nature nor the role of the serous secretions is immediately apparent. Aggregations of cells with large cytoplasmic vacuoles, called bladder cells, appear in the subepithelial connective tissue near the tops of the intestinal ridges. The bladder cells are suitably positioned to bolster the integrity of the ridges. Striated muscle of the intestine occurs in inner longitudinal and outer circular layers. The inner longitudinal layer consists of six strips, with one strip associated with the base of each intestinal ridge. The outer circular layer is essentially complete, but there are periodic apertures in this layer on the left and right sides of the intestine, providing nerves and haemolymph vessels with access to the interior of the gut. Based on histological features, and consistent with reports on other crayfish, we conclude that the intestine of P. clarkii has a proctodeal (ectodermal) origin.en
dc.description.refereedyesen
dc.format.extent550143 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citationTerence H. To, Tracy L. Brenner, Michael J. Cavey and Jerrel L. Wilkens "Histological organization of the intestine in the crayfish Procambarus clarkii" Acta Zoologica (Stockholm) 85 : 119–130 (April 2004)en
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/35105
dc.identifier.issn0001-7272
dc.identifier.urihttp://hdl.handle.net/1880/43434
dc.language.isoenen
dc.publisherBlackwell Publishingen
dc.publisher.urlhttp://www.blackwellpublishing.com/journal.asp?ref=0001-7272&site=1
dc.subjectBiologyen
dc.subject.otheracinar glandsen
dc.subject.otheradluminal epitheliumen
dc.subject.otherconnective tissueen
dc.subject.othercrayfishen
dc.subject.othercuticleen
dc.subject.otherhistologyen
dc.subject.otherimmunohistochemistryen
dc.subject.otherintestineen
dc.subject.otherstriated muscleen
dc.subject.othervacuolate cellsen
dc.titleHistological organization of the intestine in the crayfish Procambarus clarkiien
dc.typejournal article
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