#$%^&*AU2010200627B220120209.pdf#####ABSTRACT The present invention relates to tick octopamine receptor nucleic acid molecules; to tick octopamine receptor proteins encoded by such nucleic acid molecules; to antibodies raised against such proteins; and to compounds that inhibit the activity of such proteins. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. The present invention also includes inhibitory compounds, particularly those that specifically inhibit tick octopamine receptor activity, as well as the use of such compounds to treat animals.