Les dolichopodidae (Diptera) dans le controle biologique de certaines insectes nuisibles des ecosystemes forestiers

Abstract

Resume -Les resultats des travaux de recherche sur la biologie deThinophilus guineensis Coul. et Neg. (Diptera, Dolichopodidae) confirment l'importance de la predation dans le comportement alimentaire de certaines especes de Dolichopodidae comme Medetera fisch, Hydrophorus fallen, Sciapus fallen, Diaphonus meigen, etc. La mortality larvaire de certaines insectes nuisibles des ecosystemes forestiers (moustiques, simulies, scolytes) peut attelndre 83 a 99%. De par leur extraodinairre ubiguite et leur importance biocoenotique, ces especes de Dolichopodidae pourraient bien etre utilisees dans des programmes de contrdle biologique de certaines insectes vecteurs de maladies ou ravageurs de cultures. Abstract-Results of research on biology of Thinophilus guineensis Coul. et Neg. (Diptera, Dolichopodidae) confirm the importance of predaceous feeding behaviour of some other species of Dolichopodidae such as Medeterafisch, Hydrophorus fallen, Sciapus fallen, Diaphorus meigen, etc. Larval mortality of some pests (mosquitoes, blackflies, scolytes, etc.) reach 83 to 99%.These species, because of their extraodinary ubiquity and their biocoenotical importance, could well be used in biological control programmes of vectors of pathogens affecting man and other animals or pests in agroforestry.

Predatory Behavior of Long-Legged Flies (Diptera: Dolichopodidae) and Their Potential Negative Effects on the Parasitoid Biological Control Agent of the Asian Citrus Psyllid (Hemiptera: Liviidae)

“…As predators, dolichopodids are considered prospective beneficial insects in biocontrol efforts when used against arthropod vectors of disease pathogens and pests in agroforestry (Coulibaly 1993). However, we identified certain organic citrus management practices that can potentially foster heavy predation on chalcidoid wasp biocontrol agents mass released against the invasive D. citri during peak fly activ-ity.…”