A self-checking coding technique for mark-recapture studies

Abstract

A technique is described in which twelve symbols or fewer can be chosen to code insects with individual marks suitable for mark-recapture studies. The method has been tested on Acrididae and has the advantages that (i) the code is self-checking against loss of marks, (ii) the application is practical, as only one colour is applied to a given individual, (iii) the versatility of the coding permits thousands of individuals to be distinguished, and (iv) an individual can be identified in the field from distances up to three metres without disturbance or rehandling. Guitar oil paints gave the most persistent marks, and were applied with a fine tubular-nib pen.