Evaluating the Impact of Road Noise on the Heart Rate of Adult Monarch bButterflies, Danaus plexippus. Pearce, J. R. P. Ph.D. Thesis, University of Georgia, Athens, Georgia, 2017. abstract bibtex As human population densities grow, the noise pollution generated is affecting animal populations in various ways. Noise pollution is anthropogenic sound that is louder, more frequent, and more common than its natural noise, and chronic exposure to noise pollution can cause stress in animals that adversely affects fitness. I tested whether simulated road noise induced stress in adult monarch butterflies (Danaus plexippus) as evidenced by changes in butterfly heart rates before and after exposure to road noise. I exposed 39 monarchs to 30 or 60 minutes of road noise in a laboratory setting and looked for evidence that their hear rates became elevated following exposure. Heart rates pre- and post-exposure were highly variable and generally appeared to increase over the course of the study; however, there was no measurable effect of road noise on monarch heart rates. My results suggest that the methods used in this study may have caused elevated stress in monarchs, limiting our ability to detect any potential effects of road noise. Alternative approaches will be needed before it can be determined whether monarchs exhibit stress responses to chronic noise exposure. This topic merits further investigation, as it may have implications for the proposed use of roadside management zones for pollinator conservation throughout the United States.
@phdthesis{pearce_evaluating_2017,
address = {Athens, Georgia},
type = {Senior {Thesis}},
title = {Evaluating the {Impact} of {Road} {Noise} on the {Heart} {Rate} of {Adult} {Monarch} {bButterflies}, {Danaus} plexippus},
abstract = {As human population densities grow, the noise pollution generated is affecting animal populations in various ways. Noise pollution is anthropogenic sound that is louder, more frequent, and more common than its natural noise, and chronic exposure to noise pollution can cause stress in animals that adversely affects fitness. I tested whether simulated road noise induced stress in adult monarch butterflies (Danaus plexippus) as evidenced by changes in butterfly heart rates before and after exposure to road noise. I exposed 39 monarchs to 30 or 60 minutes of road noise in a laboratory setting and looked for evidence that their hear rates became elevated following exposure. Heart rates pre- and post-exposure were highly variable and generally appeared to increase over the course of the study; however, there was no measurable effect of road noise on monarch heart rates. My results suggest that the methods used in this study may have caused elevated stress in monarchs, limiting our ability to detect any potential effects of road noise. Alternative approaches will be needed before it can be determined whether monarchs exhibit stress responses to chronic noise exposure. This topic merits further investigation, as it may have implications for the proposed use of roadside management zones for pollinator conservation throughout the United States.},
language = {en},
school = {University of Georgia},
author = {Pearce, Jana Rebecca Prillaman},
year = {2017},
}
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