Artículo
Abstract:
Volvox barberi W. Shaw is a volvocalean green alga composed of biflagellated cells. Vovocales with 16 cells or more form spherical colonies, and their largest members have germ-soma separation (all species in the genus Volvox). V. barberi is the largest Volvox species recorded in terms of cell number (10,000-50,000 cells) and has the highest somatic to reproductive cell ratio (S/R). Since they are negatively buoyant, Volvocales need flagellar beating to avoid sinking and to reach light and nutrients. We measured V. barberi swimming speed and total swimming force. V. barberi swimming speeds are the highest recorded so far for volvocine algae (∼600 μm·s -1). With this speed, V. barberi colonies have the potential to perform daily vertical migrations in the water column at speeds of 2-3 m·h-1, consistent with what has been reported about Volvox populations in the wild. Moreover, V. barberi data fit well in the scaling relationships derived with the other smaller Volvox species, namely, that the upward swimming speed Vup ∝ N 0.28 and the total swimming force FS ∝ N 0.77 (N = colony cell number). These allometric relationships have been important supporting evidence for reaching the conclusion that as size increases, colonies have to invest in cell specialization and increase their S/R to increase their motility capabilities to stay afloat and motile. © 2008 Phycological Society of America.
Registro:
| Documento: | Artículo |
| Título: | Volvox barberi, the fastest swimmer of the Volvocales (Chlorophyceae) |
| Autor: | Solari, C.A.; Michod, R.E.; Goldstein, R.E. |
| Filiación: | Laboratorio de Biología Comparada de Protistas, Departamento de Biodiversidad Y Biología Experimental (FCEyN), Universidad de Buenos Aires, Buenos Aires, C1428EHA, Argentina Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, United States Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, CB3 0WA, United Kingdom |
| Palabras clave: | Hydrodynamics; Motility; Multicellularity; Swimming speeds; Volvocales; Volvox barberi; algae; Chlamydomonadales; Chlorophyceae; Chlorophyta; Volvox; Volvox barberi |
| Año: | 2008 |
| Volumen: | 44 |
| Número: | 6 |
| Página de inicio: | 1395 |
| Página de fin: | 1398 |
| DOI: | http://dx.doi.org/10.1111/j.1529-8817.2008.00603.x |
| Título revista: | Journal of Phycology |
| Título revista abreviado: | J. Phycol. |
| ISSN: | 00223646 |
| CODEN: | JPYLA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223646_v44_n6_p1395_Solari |
Referencias:
- Coleman, A.W., Phylogenetic analysis of "volvocacae" for comparative genetic studies (1999) Proc. Natl. Acad. Sci. U. S. A., 96, pp. 13892-7
- Desnitski, A.G., A review on the evolution of development in Volvox morphological and physiological aspects (1995) Eur. J. Protistol., 31, pp. 241-7
- Guyon, E., Hulin, J.P., Petit, L., Mitescu, C.D., (2001) Physical Hydrodynamics., , Oxford University Press, New York, 528. pp
- Hoops, H.J., Somatic cell flagellar apparatuses of two species of Volvox (Chlorophyceae) (1984) J. Phycol., 20, pp. 20-7
- Kirk, D.L., (1998) Volvox: Molecular-Genetic Origins of Multicellularity and Cellular Differentiation., , Cambridge University Press, Cambridge, UK, 381. pp
- Kirk, D.L., Kirk, M.M., Protein synthetic patterns during the asexual life cycle of Volvox carteri (1983) Dev. Biol., 96, pp. 493-506
- Koufopanou, V., The evolution of soma in the Volvocales (1994) Am. Nat., 143, pp. 907-31
- Nozaki, H., Origin and evolution of the genera Pleodorina and Volvox (Volvocales) (2003) Biologia, 58, pp. 425-31
- Nozaki, H., Ohta, N., Takano, H., Watanabe, M.M., Reexamination of phylogenetic relationships within the colonial Volvocales (Chlorophyta): An analysis of atpB and rbcL gene sequences (1999) J. Phycol., 35, pp. 104-12
- Nozaki, H., Ott, F.D., Coleman, A.W., Morphology, molecular phylogeny and taxonomy of two new species of Pleodorina (Volvocaceae, Chlorophyceae) (2006) J. Phycol., 42, pp. 1072-80
- Reynolds, C.S., (1984) The Ecology of Freshwater Phytoplankton., p. 384. , Cambridge University Press, Cambridge, UK, pp
- Short, M.B., Solari, C.A., Ganguly, S., Powers, T.R., Kessler, J.O., Goldstein, R.E., Flows driven by flagella of multicellular organisms enhance long-range molecular transport (2006) Proc. Natl. Acad. Sci. U. S. A., 103, pp. 8315-9
- Smith, G.M., A comparative study of the species of Volvox (1944) Trans. Am. Microsc. Soc., 63, pp. 265-310
- Solari, C.A., Ganguly, S., Kessler, J.O., Michod, R.E., Goldstein, R.E., Multicellularity and the functional interdependence of motility and molecular transport (2006) Proc. Natl. Acad. Sci. U. S. A., 103, pp. 1353-8
- Solari, C.A., Kessler, J.O., Michod, R.E., A hydrodynamics approach to the evolution of multicellularity: Flagellar motility and the evolution of germ-soma differentiation in volvocalean green algae (2006) Am. Nat., 167, pp. 537-54
- Sommer, U., Gliwicz, Z.M., Long-range vertical migration of Volvox in tropical Lake Cahora Bassa (Mozambique) (1986) Limnol. Oceanogr., 31, pp. 650-3
Citas:
---------- APA ----------
Solari, C.A., Michod, R.E. & Goldstein, R.E. (2008) . Volvox barberi, the fastest swimmer of the Volvocales (Chlorophyceae). Journal of Phycology, 44(6), 1395-1398.http://dx.doi.org/10.1111/j.1529-8817.2008.00603.x
---------- CHICAGO ----------
Solari, C.A., Michod, R.E., Goldstein, R.E. "Volvox barberi, the fastest swimmer of the Volvocales (Chlorophyceae)" . Journal of Phycology 44, no. 6 (2008) : 1395-1398.http://dx.doi.org/10.1111/j.1529-8817.2008.00603.x
---------- MLA ----------
Solari, C.A., Michod, R.E., Goldstein, R.E. "Volvox barberi, the fastest swimmer of the Volvocales (Chlorophyceae)" . Journal of Phycology, vol. 44, no. 6, 2008, pp. 1395-1398.http://dx.doi.org/10.1111/j.1529-8817.2008.00603.x
---------- VANCOUVER ----------
Solari, C.A., Michod, R.E., Goldstein, R.E. Volvox barberi, the fastest swimmer of the Volvocales (Chlorophyceae). J. Phycol. 2008;44(6):1395-1398.http://dx.doi.org/10.1111/j.1529-8817.2008.00603.x
