The effects of
temperature and pH change on the snapping sound characteristic of Alpheus
Z.Z. Goh2 and S.M. Ghazali2*
Invasion Biology Laboratory, Department of Biological Sciences, Faculty of Science,
National University of Singapore, 14 Science Drive 4, 117558, Singapore
Earth Science and Environment, Faculty of Science and Technology, University
Kebangsaan Malaysia, Bangi, 43600, Malaysia
*Corresponding Author Email : email@example.com
The current study undertook manipulative experiments to observe changes in
snapping shrimp sound signals in relation to temperature and pH changes.
Methodology: Sounds of intertidal snapping shrimp (Alpheus
edwardsii) sequentially exposed to different temperature/pH treatments
manipulation for a period of 2 week each, were recorded in the laboratory and
analysed. The acoustic characteristics of snapping sound signal were examined
to relate to the change in temperature, pH and combination of both parameters.
Our results showed that there was a significant reduction in the frequency of
peak amplitude of snapping sound wave following a two week exposure to a
combination of temperature and pH treatments. The frequency of snapping
shrimp sound decreased by approximately 30% when exposed to a 2°C
increase in temperature and a 0.7 unit decrease in pH, however, elevated
temperature alone caused no significant effect on the peak frequency of
snapping shrimp sound.
Interpretation: The finding suggests that following the
prediction values of temperature and pH changes due to climate change in the
coming century may implicate the ambient noise at habitats where snapping
Bioacoustics, Climate change, Snapping shrimp
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