Integrated use of planaria (Dugesia dorotocephala) and Bacillus thuringiensis var. israelensis against Aedes taeniorhynchus: a laboratory bioassay.

The effectiveness of integrating Bacillus thuringiensis var. israelensis (B.t.i.) and the predatory planaria, Dugesia dorotocephala against Aedes taeniorhynchus was determined under controlled laboratory conditions. There was no significant effect (P greater than 0.05) of B.t.i. on D. dorotocephala either by direct association or through ingestion of B.t.i. dosed larvae. Planaria, alone, and B.t.i. combined with planaria, both provided significant (P less than 0.05) reduction of Ae. taeniorhynchus populations through the 12-week evaluation.