Experimental study of swimming behaviours of Daphnia Magna

Daphnia are commonly used as model organisms for ecological, evolutionary, and ecotoxicological research due to their high sensitivity to changes in environmental conditions. Although there are numerous studies with the use of Daphnia, but most of these studies use mortality and immobilisation as en...

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Main Author: Siew, Edgar Wei Yao
Other Authors: Tuan Tran
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2022
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Online Access:https://hdl.handle.net/10356/158924
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1589242022-06-07T06:12:08Z Experimental study of swimming behaviours of Daphnia Magna Siew, Edgar Wei Yao Tuan Tran School of Mechanical and Aerospace Engineering ttran@ntu.edu.sg Engineering::Mechanical engineering::Fluid mechanics Daphnia are commonly used as model organisms for ecological, evolutionary, and ecotoxicological research due to their high sensitivity to changes in environmental conditions. Although there are numerous studies with the use of Daphnia, but most of these studies use mortality and immobilisation as endpoints to determine toxicity. These endpoints may not be enough to evaluate the early and chronic effect of certain toxicants and environmental conditions. Therefore, to evaluate these effects, sensitive biomarkers such as swimming behaviour should be used instead. In this project, the swimming stroke cycle of Daphnia was first analysed closely via a frame-by-frame analysis to gain a deeper insight into their swimming stroke cycle. Next, sensitive and quantifiable parameters were provided to describe the swimming behaviour of Daphnia. The swimming behaviour of Daphnia were then observed in various environmental conditions. Environmental conditions were either altered by the addition of various concentrations of fertilizer or adjustment in population density. The results showed that the introduction of fertilizer would cause an increase in increase in swimming activity at the beginning. However, it was observed that fertilizers would eventually cause an inhibition in the swimming abilities of Daphnia. In addition, it can also be observed that Daphnia possess some form of adaptation mechanism when placed in an environment with altered population density. Since the results from this project shows that fertilizer inhibits the swimming abilities of Daphnia, it should be considered hazardous to zooplanktons. Bachelor of Engineering (Mechanical Engineering) 2022-06-07T06:12:08Z 2022-06-07T06:12:08Z 2022 Final Year Project (FYP) Siew, E. W. Y. (2022). Experimental study of swimming behaviours of Daphnia Magna. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/158924 https://hdl.handle.net/10356/158924 en B209 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering::Fluid mechanics
spellingShingle Engineering::Mechanical engineering::Fluid mechanics
Siew, Edgar Wei Yao
Experimental study of swimming behaviours of Daphnia Magna
description Daphnia are commonly used as model organisms for ecological, evolutionary, and ecotoxicological research due to their high sensitivity to changes in environmental conditions. Although there are numerous studies with the use of Daphnia, but most of these studies use mortality and immobilisation as endpoints to determine toxicity. These endpoints may not be enough to evaluate the early and chronic effect of certain toxicants and environmental conditions. Therefore, to evaluate these effects, sensitive biomarkers such as swimming behaviour should be used instead. In this project, the swimming stroke cycle of Daphnia was first analysed closely via a frame-by-frame analysis to gain a deeper insight into their swimming stroke cycle. Next, sensitive and quantifiable parameters were provided to describe the swimming behaviour of Daphnia. The swimming behaviour of Daphnia were then observed in various environmental conditions. Environmental conditions were either altered by the addition of various concentrations of fertilizer or adjustment in population density. The results showed that the introduction of fertilizer would cause an increase in increase in swimming activity at the beginning. However, it was observed that fertilizers would eventually cause an inhibition in the swimming abilities of Daphnia. In addition, it can also be observed that Daphnia possess some form of adaptation mechanism when placed in an environment with altered population density. Since the results from this project shows that fertilizer inhibits the swimming abilities of Daphnia, it should be considered hazardous to zooplanktons.
author2 Tuan Tran
author_facet Tuan Tran
Siew, Edgar Wei Yao
format Final Year Project
author Siew, Edgar Wei Yao
author_sort Siew, Edgar Wei Yao
title Experimental study of swimming behaviours of Daphnia Magna
title_short Experimental study of swimming behaviours of Daphnia Magna
title_full Experimental study of swimming behaviours of Daphnia Magna
title_fullStr Experimental study of swimming behaviours of Daphnia Magna
title_full_unstemmed Experimental study of swimming behaviours of Daphnia Magna
title_sort experimental study of swimming behaviours of daphnia magna
publisher Nanyang Technological University
publishDate 2022
url https://hdl.handle.net/10356/158924
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