Effects of ocean acidification relevant pH on foraging behaviour and response by the hermit crab, Pagurus bernhardus
The current rise of atmospheric CO2 has led to an increased rate of ocean acidification (OA), a process that results in a decrease in oceanic pH. Forecasts predict the rate of OA to further increase, the largest to be seen in the past 300 million years. This process can consequently have significant...
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ftunivhullir:oai:hull-repository.worktribe.com:4223339 2024-06-23T07:55:50+00:00 Effects of ocean acidification relevant pH on foraging behaviour and response by the hermit crab, Pagurus bernhardus Cook, Ellie-Mae Elizabeth Hardege, Jörg D. 2020-08-01 https://hull-repository.worktribe.com/file/4223339/1/Thesis https://hull-repository.worktribe.com/output/4223339 unknown https://hull-repository.worktribe.com/output/4223339 https://hull-repository.worktribe.com/file/4223339/1/Thesis openAccess Biological sciences Thesis publishedVersion 2020 ftunivhullir 2024-06-10T14:16:43Z The current rise of atmospheric CO2 has led to an increased rate of ocean acidification (OA), a process that results in a decrease in oceanic pH. Forecasts predict the rate of OA to further increase, the largest to be seen in the past 300 million years. This process can consequently have significant implications upon marine life and their ecosystem functions. This study aims to expand on pre- existing knowledge, identifying effects of OA on olfaction by hermit crabs, Pagurus bernhardus. Investigations explored the variation in threshold concentrations of chemical foraging cues, required for successful detection by individuals at pH 8.15 and decreased pH levels 7.7 and 7.2. Response personality of individuals was examined through a series of biological assays. Statistical analysis and results suggest detection thresholds for chemical foraging cue, glutathione, are dependent upon and vary with trial individual and pH condition. As a population both reduced pH levels, 7.7 and 7.2, had great impact on abilities to successfully detect and respond to the presence of the chemical foraging cue glutathione. Additionally, response personality of individuals was exhibited across individuals. Some individuals displayed greater frequency in engaging foraging behaviours than conspecifics. This was also evident under subjection to reduced pH conditions. However, small sample size was a major limitation to the power of statistical significance here. Findings suggest, future rates of OA and further reduction in pH amongst coastal areas, will impact the olfactory process of P. bernhardus individuals. Future research should focus on long-term and multi- generational studies. These will best consider acclimation and genetic adaptation possibilities, in the event of rapidly accelerating OA related conditions. Thesis Ocean acidification University of Hull: Repository@Hull |
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University of Hull: Repository@Hull |
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Biological sciences |
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Biological sciences Cook, Ellie-Mae Elizabeth Effects of ocean acidification relevant pH on foraging behaviour and response by the hermit crab, Pagurus bernhardus |
topic_facet |
Biological sciences |
description |
The current rise of atmospheric CO2 has led to an increased rate of ocean acidification (OA), a process that results in a decrease in oceanic pH. Forecasts predict the rate of OA to further increase, the largest to be seen in the past 300 million years. This process can consequently have significant implications upon marine life and their ecosystem functions. This study aims to expand on pre- existing knowledge, identifying effects of OA on olfaction by hermit crabs, Pagurus bernhardus. Investigations explored the variation in threshold concentrations of chemical foraging cues, required for successful detection by individuals at pH 8.15 and decreased pH levels 7.7 and 7.2. Response personality of individuals was examined through a series of biological assays. Statistical analysis and results suggest detection thresholds for chemical foraging cue, glutathione, are dependent upon and vary with trial individual and pH condition. As a population both reduced pH levels, 7.7 and 7.2, had great impact on abilities to successfully detect and respond to the presence of the chemical foraging cue glutathione. Additionally, response personality of individuals was exhibited across individuals. Some individuals displayed greater frequency in engaging foraging behaviours than conspecifics. This was also evident under subjection to reduced pH conditions. However, small sample size was a major limitation to the power of statistical significance here. Findings suggest, future rates of OA and further reduction in pH amongst coastal areas, will impact the olfactory process of P. bernhardus individuals. Future research should focus on long-term and multi- generational studies. These will best consider acclimation and genetic adaptation possibilities, in the event of rapidly accelerating OA related conditions. |
author2 |
Hardege, Jörg D. |
format |
Thesis |
author |
Cook, Ellie-Mae Elizabeth |
author_facet |
Cook, Ellie-Mae Elizabeth |
author_sort |
Cook, Ellie-Mae Elizabeth |
title |
Effects of ocean acidification relevant pH on foraging behaviour and response by the hermit crab, Pagurus bernhardus |
title_short |
Effects of ocean acidification relevant pH on foraging behaviour and response by the hermit crab, Pagurus bernhardus |
title_full |
Effects of ocean acidification relevant pH on foraging behaviour and response by the hermit crab, Pagurus bernhardus |
title_fullStr |
Effects of ocean acidification relevant pH on foraging behaviour and response by the hermit crab, Pagurus bernhardus |
title_full_unstemmed |
Effects of ocean acidification relevant pH on foraging behaviour and response by the hermit crab, Pagurus bernhardus |
title_sort |
effects of ocean acidification relevant ph on foraging behaviour and response by the hermit crab, pagurus bernhardus |
publishDate |
2020 |
url |
https://hull-repository.worktribe.com/file/4223339/1/Thesis https://hull-repository.worktribe.com/output/4223339 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://hull-repository.worktribe.com/output/4223339 https://hull-repository.worktribe.com/file/4223339/1/Thesis |
op_rights |
openAccess |
_version_ |
1802648576726138880 |