SEX RELATED DIFFERENCE OF MOVEMENT SPEED IN THE FRESHWATER SNAIL VIVIPARUS ATER
- 1 January 1986
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Molluscan Studies
- Vol. 52 (2), 91-96
- https://doi.org/10.1093/mollus/52.2.91
Abstract
1. At each of 3 sites in Lake Zurich a group of individually tagged Viviparus ater were released. Each group consisted of 16 males and 16 females. The position of the snails was recorded daily for 10 days. 2. The average distance covered per day was 2.5 m for males and 1.4 m for females. The maximum daily distance was 18.9 m for males and 9.8 m for females. 3. Some snails were observed at the same position for 2 to 4 days. Nearby mounds of faeces indicated that they were filter feeding. 4. The males in two of the groups and the females in one group showed directional movement. The directionality resulted from the length of the daily displacements being different in different directions. The daily changes of direction were randomly distributed in both sexes in all the groups.This publication has 13 references indexed in Scilit:
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