Comparative study of three estimation methods of Cirina butyrospermi population density in shea parks in Western Burkina Faso
Méthodes d’estimation de la densité de la chenille du karité
Keywords:
Cirina butyrospermi, edible insect, assessment, Burkina FasoAbstract
The question of quantifying the shea caterpillars arises to predict what is available for the market or for
household food security. It is such a necessity that dictates the current study, the objective of which was
to compare the effectiveness of three methods used to evaluate shea caterpillar population density in the
Hauts Bassins region. The experimental design was a dispersed bock with three treatments in five
replicates. The treatments were (i) the direct count of the individuals of each of the five larval stages, (ii) the estimation of the density using the images from conventional photography, and (iii) the estimation using the images from drone. The direct count was more effective for the larval stages L1, L2 and L3.
The estimation of the density using images from the drone and conventional photography was more
effective for the populations of the L4 and L5 stages. From these results, it becomes possible to
investigate the potential of shea parklands in edible caterpillars and the impact of C. butyrospermi
caterpillar attacks on shea fruit production.