Daniela Baganz: Comparing locomotor behaviour of the fish species Danio rerio and Leucaspius delineatus under the influence of chemical stressors |
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Comparing locomotor behaviour of the fish species
Danio rerio and Leucaspius delineatus
under the influence of chemical stressors
Dissertation
zur Erlangung des akademischen Grades
doctor rerum naturalium
(Dr. rer. nat.)
im Fach Biologie
eingereicht an der
Mathematisch-Naturwissenschaftlichen Fakultät I
der Humboldt-Universität zu Berlin
von
Dipl.-Biol. Daniela
Baganz
geb. Biallas
geboren am 13.12.1960 in Berlin
Präsident der Humboldt-Universität zu Berlin
Prof. Dr. J. Mlynek
Dean: Dekan der Mathematischen-
Naturwissenschaftlichen Fakultät I
Prof. T. Buckhout, PhD
Approvals:
1. Prof. Dr. Steinberg
2. Prof. Dr. F.M. Butterworth
3. PD Dr. R. Siegmund
Tag der mündlichen Prüfung: 15. Dezember 2005
Einreichungsdatum: 06. Juli 2005
Table of contents
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1. Summary
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2. Publications
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2.1 References to this dissertation
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2.2 Further references
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2.3 Contributions to Congresses
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3. Introduction
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3.1 Behaviour as toxicological endpoint
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3.2 Behaviour of fish influenced by chemical stressors
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3.3 Chronobiological aspects of behaviour
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3.4 Test substances
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3.4.1 Microcystin-LR (MC-LR)
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3.4.1.1 Cyanotoxins
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3.4.1.2 Concentration and persistence of MC-LR in aquatic systems
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3.4.1.3 Toxicity of MC-LR
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3.4.2 Trichlorobiphenyl (PCB 28)
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3.4.2.1 Technical use of PCBs
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3.4.2.2 Chemical and physical properties of PCBs
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3.4.2.3 Concentrations in aquatic systems and bioaccumulation
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3.4.2.4 Toxicity of PCBs
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3.5 Aim of this study
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4. Material and Methods
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4.1 Fish species
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4.2 Test conditions
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4.3 Test substances
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4.4 Recording Procedures
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4.5 Statistics and calculations
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4.5.1 Analysis of mean motility and mean number of turns
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4.5.2 Regression between motility and turns
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4.5.3 Zeitgeber analysis
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4.5.4 Cosinor analysis
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4.5.5 Periodic frequency analysis
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5. Results
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5.1 Effects of Microcystin-LR
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5.1.1 Mean motility over the whole exposure period
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5.1.2 Mean motility during light and dark phases
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5.1.3 Temporal development of mean motilities
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5.1.4 Number of turns over the whole exposure period
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5.1.5 Regression between motilities and turns
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5.1.6 Effects of zeitgeber
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5.1.7 Cosinor analysis and Polar Plots
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5.1.8 Periodic frequency analysis
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5.2 Effects of Trichlorobiphenyl
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5.2.1 Mean motility over the whole exposure period
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5.2.2 Mean motility during light and dark phases
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5.2.3 Temporal development of mean motilities
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5.2.4 Number of turns over the whole exposure period
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5.2.5 Regression between motilities and turns
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5.2.6 Effects of zeitgeber
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5.2.7 Cosinor analysis and Polar Plots
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5.2.8 Periodic frequency analysis
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6. Discussion
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6.1 Toxicity of Microcystin-LR and Trichlorobiphenyl
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6.2 Fish-species specific differences to chemical stressors
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6.2.1 Effects on locomotor activity of Danio rerio and Leucaspius d
e
lineatus
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6.2.1.1 Microcystin-LR induced behavioural effects
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6.2.1.2 Trichlorobiphenyl induced behavioural effects
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6.2.2 Effects on chronobiology of Danio rerio and Leucaspius d
e
lineatus
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6.2.2.1 Cyclic aspects of behaviour under unexposed conditions
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6.2.2.2 Microcystin-LR induced chronobiological changes
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6.2.2.3 Trichlorobiphenyl induced chronobiological changes
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6.2.3 Stress potential of Microcystin-LR and Trichlorobiphenyl
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6.3 Applications of behavioural approaches in ecotoxicology
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6.3.1 Hormesis theory
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6.3.2 Behavioural strategies
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6.3.3 Chronobiological analysis
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6.4 Digression: Biomonitoring
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References
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Appendix
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Abbreviations
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Erklärung
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Acknowledgements
Tables
Images
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