Vorticella convallaria
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| Vorticella convallaria | ||||||||||||||||||
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| Vorticella convallaria (L., 1758) L., 1767 |
Vorticella convallaria is a protozoan, the type species of the genus Vorticella. It resembles V. campanula, but differs in being somewhat narrow in the anterior end and usually having no refractile granules in the endoplasm.
The cell body of this species is 50-95 μm long and 35-53 μm wide. The peristome ranges from 55-75 μm in diameter. The rod-like, contractile stalk is 25-300 μm long and 4 μm wide. It can collapse into a tightly coiled helix in under 1/60th of a second.[1]
[edit] References
- ^ Bras, R., A. Upadhyaya, A. van Oudenaarden & C. Ortiz 2002. Imaging of the World's Fastest Biological Spring Vorticella onvallaria Via Atomic Force Micoscopy. American Physical Society, Annual APS March Meeting, March 18-22, 2002 Indiana Convention Center, Indianapolis, Indiana. Meeting ID: MAR02, abstract #M33.107
[edit] Further reading
- Maciejewski, J.J., E.J. Vacchiano, S.M. McCutcheon & H.E. Buhse, Jr. 1999. Cloning and Expression of a cDNA Encoding a Vorticella convallaria Spasmin: an EF-Hand Calcium-Binding Protein. The Journal of Eukaryotic Microbiology 46(2): 165–173.
- Sallaq, R., D.H. van Winkle & J. Cao 2003. Determination of velocity, acceleration,and forces in the contraction of Vorticella convallaria. American Physical Society, Annual APS March Meeting 2003, March 3-7, 2003. Abstract #Y9.001
- Shiono, H. & Y. Naitoh 1997. Cellular contraction precedes membrane depolarization in Vorticella convallaria.PDF Journal of Experimental Biology 200(16): 2249–2261.
- Vacchiano, E., A. Dreisbach, D. Locascio, L. Castaneda, T. Vivian & H.E. Buhse, Jr. 1992. Morphogenetic Transitions and Cytoskeletal Elements of the Stalked Zooid and the Telotroch Stages in the Peritrich Ciliate Vorticella convallaria. The Journal of Eukaryotic Microbiology 39(1): 101–106.
- Wibel, R., E.J. Vacchiano & H.E. Buhse, Jr. 1993. Ultrastructural Study of the Cortex and Membrane Skeleton of Vorticella convallaria (Ciliophora: Peritricha). Transactions of the American Microscopical Society 112(2): 107–120.
