Biomechanical Strategies Underlying the Robust Body Armour of an Aposematic Weevil.

ABSTRACT: Robust body armor is one of many anti-predator strategies used among animal taxa. The exoskeleton of insects can serve as the secondary defense mechanism in combination with the primary defense such as warning color. Aposematic Pachyrhynchus weevils advertise their unprofitability and use their robust exoskeleton for effective defense against lizard predators. While the mature weevils survive after the predatory attack, the soft teneral ones can easily be consumed. To reveal how the mature weevils achieve such effective protection, we investigated the ontogenetic changes in the microstructure and material properties of the exoskeleton of the adult weevils. We also tested the functional role of a weevil-specific structure, the fibrous ridge, in the robustness of the elytral cuticle o

SUBMITTER: Wang LY 

PROVIDER: S-EPMC6189447 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature