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Ammonium Effects on Chemoreception and Physiology of the Rusty crayfish, Orconectes rusticus

Klotz, Katie L.
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1338576144

Abstract Details

2012, Master of Science (MS), Bowling Green State University, Biological Sciences.
Sensory information is stimuli dispersed through the environment in multiple modalities. Signal detection of stimuli can be impaired when background noise is present. Background noise can include anthropogenic pollution, e.g. ammonium. Ammonium can disrupt communication in three ways: masking, sensory impairment, or physiological impairment. To test for these three hypotheses, crayfish pairs were sized-matched to 30% size difference and exposed to one of two exposures of ammonium: low exposure was 0.9 mg/L NH4+ and a high exposure of 9.0 mg/L NH4+ for eight days. A fighting test was completed the first day of the exposure and the eighth day of the exposure. Crayfish fighting pairs exposed to the low ammonium levels fought for a longer period of time, hypothesized to be a result from sensory impairment. Fighting pairs exposed to high ammonium levels fought for a shorter period of time compared to the control, which is predicted to be from physiological impairment. Changing the daily activity patterns of crayfish populations by manipulating the time spent fighting has disproportional impact on the ecosystem. Crayfish spend a deviated amount of time shredding detritus and mating, which affects nutrient cycling and predator-prey interactions in the ecosystem.
Paul Moore, PhD (Advisor)
George Bullerjahn, PhD (Committee Member)
Jeff Miner, PhD (Committee Member)
Biology
ammonium; Rusty crayfish; Orconectes rusticus; aggression

Recommended Citations

Citations

  • Klotz, K. L. (2012). Ammonium Effects on Chemoreception and Physiology of the Rusty crayfish, Orconectes rusticus [Master's thesis, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1338576144

    APA Style (7th edition)

  • Klotz, Katie. Ammonium Effects on Chemoreception and Physiology of the Rusty crayfish, Orconectes rusticus. 2012. Bowling Green State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1338576144.

    MLA Style (8th edition)

  • Klotz, Katie. "Ammonium Effects on Chemoreception and Physiology of the Rusty crayfish, Orconectes rusticus." Master's thesis, Bowling Green State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1338576144

    Chicago Manual of Style (17th edition)

bgsu1338576144
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© 2012, all rights reserved.
This open access ETD is published by Bowling Green State University and OhioLINK.