Rate of Establishment of Natural Enemies in Classical Biological Control

Abstract

Since ca. 1890, applied entomologists throughout the world have been introducing exotic natural enemies to obtain classical biological control. Recently, C. P. Clausen and coworkers prepared a summary of this phase of biological control (Clausen 1978) which treats the subject on a worldwide basis up to 1968. In the present paper, we present an analysis of data obtained from this volume, viz., rate of establishment of natural enemies in classical biological control.