The reproductive strategies of two Antarctic rotifers
Article first published online: 23 MAR 2009
Journal of Zoology
Volume 227, Issue 1, pages 145–162, May 1992
How to Cite
Dartnall, H. J. G. (1992), The reproductive strategies of two Antarctic rotifers. Journal of Zoology, 227: 145–162. doi: 10.1111/j.1469-7998.1992.tb04350.x
- Issue published online: 23 MAR 2009
- Article first published online: 23 MAR 2009
- Accepted 12 April 1991
The bdelloid rotifers Philodina gregaria Murray and Adineta grandis Murray were both cultured through three generations. The results suggested the following models for calculation purposes: (1) that individual Adineta grandis live for 40 days and, at death, give rise to five offspring; (2) that individual Philodina gregaria live for 89 days, producing 18 young at three-day intervals, the first on day 36 and the last on day 87 (the animal dying two days later).
Mathematical expressions for population growth were formulated, from these models, and used to interpret the field observations obtained from a shallow pool on Signy Island (60°43′ S, 45°38′ W) during the course of an Antarctic summer.
Midway through the summer, two seals crawled through the pool and upset the continuity of the field study. This natural catastrophe not only provided an interesting insight into the recovery of such habitats but provided an opportunity to test further the hypotheses formulated in the culture experiments.