Oviposition behavior of the littoral rotifer Euchlanis dilatata
Several components of egg-laying behavior in 3 clones of E. dilatata were investigated. Using nearest-neighbor analyses it was shown that individual animals lay their eggs randomly within culture dishes in the absence of an artificial substrate while eggs laid in the presence of a substrate are clumped in 2 of the 3 clones studied. Animals preferentially oviposited on artificial substrates containing eggs when given a choice between artificial substrates with and without eggs of conspecifics. When given a choice of natural substrates, animals consistently laid more eggs on the plant species from which they were collected. This preference persisted for 2 generations after animals had been removed from plants. In addition, observations of neonate hatching behavior demonstrated that neonates often spend relatively long times in the immediate vicinity of hatching.
Key wordsoviposition behavior Euchlanis dilatata
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- Chew, F. S. & R. K. Robbins, 1984. Egg-laying in butterflies. Symposia of the Royal Entomological Society of London, No. 11. The Biology of Butterflies. R. I. Vane-Wright and P. R. Ackeny (eds.) pp. 65–79. Academic Press, London.Google Scholar
- Edmondson, W. T. 1960. Reproductive rates of rotifers in natural populations. Mem. Ist. ital. Idrobiol. 12: 21–77.Google Scholar
- Gilbert, J. J., 1968. Dietary control of sexuality in the rotifer Asplanchna brightwelli Gosse. Physiol. Zool. 41: 14–43.Google Scholar
- Stoszberg, K., 1932. Euchlanis, Brachionus and Rhinoglena. Z. wiss. Zool. 142.Google Scholar
- Vandermeer, J. H., 1981. Elementary Mathematical Ecology. Wiley, New York. 294 pp.Google Scholar