Adrenergic ligands that block oviposition in the cattle tick Rhipicephalus microplus affect ovary contraction.

ABSTRACT: The tyraminergic/octopaminergic system is central for the control of arthropod oviposition. Previous works demonstrated that the pharmacological perturbation of this system inhibits oviposition in the cattle tick Rhipicephalus microplus. In this work, we describe a physiologically active whole-mount preparation of the contractile tick ovary that allows the quantitative videometrical analysis of ovary contraction in response to different compounds. Eight adrenergic ligands known to inhibit oviposition, including octopamine and tyramine were tested. These compounds exhibited antagonistic effects; octopamine relaxes the ovary preparation while tyramine induces a very strong contraction. The other adrenergic compounds tested were classified as able to contract or relax ovary muscle tissue. Iso

SUBMITTER: Cossio-Bayugar R 

PROVIDER: S-EPMC4601016 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature