Vivo-Morpholinos were fed to mosquitos. The oligos decreased the amount of MAPK protein in the midgut and the number of Plasmodium oocysts in the mudgut.
"The feeding protocol described in the present study provides several advantages over current methods for gene knockdown in insects. The method is easy to apply, requires no special skills for delivery, and is highly target specific. ... This protocol should therefore be considered as an efficient alternative in studies requiring target specific protein knockdown in mosquitoes and other arthropods."
Pietri JE, Cheung KW, Luckhart S. Knockdown of mitogen-activated protein kinase (MAPK) signalling in the midgut of Anopheles stephensi mosquitoes using antisense morpholinos. Insect Mol Biol. 2014 May 28. doi: 10.1111/imb.12103. [Epub ahead of print]