The evolution of complex calls In meadow Katydids
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Meadow Katydids (genera Orchelimum and Conocephalus) are a specious group often are found in habitats with several species within the group living in sympatry. They produce complex calls with two distinct phrases, "buzzing" and "ticking". These two phrases are organized in a highly diverse way across species. This diversity of call patterns in Meadow Katydids provides an excellent opportunity to comparatively study the evolution of complex calls. We tested the function of the two call phrases in male-male interactions. we examined the structure of the male call in the context of communities to identify candidate traits (i.e. traits likely involved in reproductive isolation). We constructed a molecular phylogeny from twenty species of Meadow Katydids, and examined the phylogenetic signal within call traits. The results of all of this taken together suggests ticking evolved in the context of male-male interaction, buzzing has been important for diversification, and in some species females have co-opted the tick to also function in reproductive isolation. Importantly, we have also designed and field-tested a plan to use Meadow Katydids as tools in primary, secondary, and post-secondary classrooms/laboratories
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.