A simple life table study based on development and mortality in the beech leaf mining weevil Rhynchaenus fagi L.

Abstract

The developmental stages of the beech weevil, Rhynchaenus fagi L. are proposed as suitable material on which to base a practical study on some aspects of population dynamics. The life history of the weevil is explained, illustrating the convenience of the immature stages for the study of development and mortality in a population. The factors normally causing mortality during each of the developmental stages are described. Results obtained from the collection of a random sample of infested leaves are included as an example of the simplicity with which data can be obtained to illustrate the concept of the life table. The limitations of such a study as well as the possibilities for changing emphasis are briefly discussed.