Abstract
A method is described for identification of the animal origin of mosquito bloodmeals (MBM). The immunoassay is named DOT-PAP, it makes use of nitrocellulose as solid phase and of peroxidase-anti-peroxidase soluble complexes as detectors. DOT-PAP includes a built-in absorbing system to remove possible cross-reactivities. The sensitivity of the assay is higher than that of precipitin test or ELISA, and it dispenses with machineries for the reading of results. The method requires nanogram amounts of antigen, therefore it lends itself to the identification of incomplete MBM and of 28 h digested MBM as well. The assay can be applied to different hematophagous arthropods and the small volumes of antigen used allow to scan a vast array of possible animal sources on the same bloodmeal.
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