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Sound Intensity In Crickets

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The Effect of Sound Intensity and Type on the Foraging Time of the House Cricket, Acheta domesticus. Brett Tung, 2017, Ecology (BIO 211), University of Puget Sound.
The topic of interest was how instincts and perceptions affect the foragers through the ecology of fear. The aim was to look at if sound intensity and/ or sound type affects the foraging time of common house crickets. This was to see how foragers overall would react to a threat of predation (the sound). Using a simple maze and a speaker we looked at two different types of sound as well as a control the sound types consisted of a Bluebird and a 1000 Hz tone and a tone at 70 dBA. The run time was recorded by how long it took for the cricket to get from a start line to a food source in the presence of the sounds or lack of. It was found that together the sound type and intensity had a significant effect on the foraging time of the crickets. Separately the sound type had no significant effect but the different intensities did have an effect.
Introduction
Sound pervades throughout nature from a combination of abiotic factors, such as the wind, or biotic factors, like bird calls. A large increase this background noise has occurred from the consequence of humans rapidly spreading around the globe (Barber et
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2012), or aquatic animals, like fish (Amoser and Ladich 2005), with few focusing on invertebrates like the cricket (Morley et al. 2014). Few studies have focused on cricket’s response to noise specifically how they use it in predator avoidance (Moiseff et al. 1978), but invertebrates in general lack the depth of research they deserve as such crucial aspects of the environment (Morley et al. 2014). Looking at the effects from foragers to top predators will allow us to see the effect of sound pollution on the community as an integrated
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