Functional value of elytra under various stresses in the red flour beetle, Tribolium castaneum.

Abstract:

:Coleoptera (beetles) is a massively successful order of insects, distinguished by their evolutionarily modified forewings called elytra. These structures are often presumed to have been a major driving force for the successful radiation of this taxon, by providing beetles with protection against a variety of harsh environmental factors. However, few studies have directly demonstrated the functional significance of the elytra against diverse environmental challenges. Here, we sought to empirically test the function of the elytra using Tribolium castaneum (the red flour beetle) as a model. We tested four categories of stress on the beetles: physical damage to hindwings, predation, desiccation, and cold shock. We found that, in all categories, the presence of elytra conferred a significant advantage compared to those beetles with their elytra experimentally removed. This work provides compelling quantitative evidence supporting the importance of beetle forewings in tolerating a variety of environmental stresses, and gives insight into how the evolution of elytra have facilitated the remarkable success of beetle radiation.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Linz DM,Hu AW,Sitvarin MI,Tomoyasu Y

doi

10.1038/srep34813

subject

Has Abstract

pub_date

2016-10-06 00:00:00

pages

34813

issn

2045-2322

pii

srep34813

journal_volume

6

pub_type

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