*Leonard Wills Field Centre, Nettlecombe Court, Williton, Taunton, Somerset.
Stabilizing selection in the dog-whelk (Nucella lapillus)
Article first published online: 20 AUG 2009
Journal of Zoology
Volume 155, Issue 1, pages 5–17, May 1968
How to Cite
Berry, R. J. and Crothers, J. H. (1968), Stabilizing selection in the dog-whelk (Nucella lapillus). Journal of Zoology, 155: 5–17. doi: 10.1111/j.1469-7998.1968.tb03027.x
- Issue published online: 20 AUG 2009
- Article first published online: 20 AUG 2009
- Accepted 10 October 1967
The amount of stabilizing selection undergone by a population of animals at different times of its life can be estimated by comparing the variances of different age samples. This paper describes an investigation into the intensities of selection experienced by populations of the common dog-whelk, Nucella lapillus (L.) exposed on different shores to different degrees of wave action. It was found that the variance of more exposed populations was reduced during life by up to 90%. There was a positive correlation between the intensity of stabilizing selection and the amount of wave action experienced by the whelks. Most of this selection took place during the first year or two of the life of the animals.