- The adult locust populations (winged locusts) which had survived the dry and cool season matured and laid eggs during October. In the invasion area, hatching started in late October and continued until the first decade of November, giving rise to hopper groups and bands, which developed under good ecological conditions ...read more
- Les invasions acridiennes constituent une menace récurrente pour Madagascar. La plus récente invasion du Criquet migrateur a eu lieu entre 1997 et 2000. L’arrêt de ce long événement acridien a nécessité le traitement de plus de 4 millions d’hectares. Cela a coûté au pays et à la communauté internationale environ ...read more
- With the onset of the rainy season in late September, ecological conditions are becoming suitable for the maturation of the swarming populations and their subsequent mating and egg-laying (adequate soil moisture and grass greening). Hatching of non-swarming populations was already reported.
Several swarms, whose size was of 3 600 hectares on ...read more