Field experiments on egg production in the fresh-water Sponge Spongilla lacustris
- 47 Downloads
Short (0.3 cm) and long (1.5–2.5 cm) lengths of laboratory-stored branches of gemmulated S. lacustris were implanted in the pond of origin on three dates approximately one, two, and three months after the time of normal gemmule hatching. The sponges derived from these implants produced eggs in both old and new tissue for three to four weeks following gemmule hatching. The significance of these results with respect to the control of egg production in natural populations is discussed.
KeywordsSponge Dartmouth College Sponge Tissue Young Tissue Cotton Thread
Unable to display preview. Download preview PDF.
- Gilbert, J. J. & Allen, H. L. - 1972 - Studies on the physiology of the green, fresh-water sponge Spongilla lacustris: primary productivity, organic matter, and chlorophyll content. Verh. Internat. Verein Limnol. 18 (in press).Google Scholar
- Gilbert, J. J. & Allen, H. L. - 1973 - Chlorophyll and primary productivity of some green, fresh-water sponges. Int. Revue ges. Hydrobiol. (in press).Google Scholar
- Miller, S. A. - 1964 - The effect of symbiotic algae on the growth of Spongilla lacustris. Masters Thesis, University of Washington, 79 pp.Google Scholar
- Rasmont, R. - 1961 - Une technique de culture des Éponges d'eau douce en milieu contrôlé. Ann. Soc. Roy. Zool. Belg. 91: 147–156.Google Scholar
- Rasmont, R. - 1962 - The physiology of gemmulation in fresh-water sponges. Symp. Soc. Study Develop. Growth 20: 3–25.Google Scholar