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Ecotoxicology and Genotoxicology

Ecotoxicology and Genotoxicology

Marcelo L Larramendy

(2017)

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Book Details

Abstract

The potential impact of anthropogenic pollutants such as agrochemicals on the environment is of global concern. Increasing use of certain compounds can result in contamination of food, water and atmospheric systems and in order to combat this pollution it is important to be able to accurately monitor the short and long term effects.
This book describes the latest aquatic species models used as indicators of the toxic effects of environmental pollutants, including models that have not routinely been used. The book enables understanding of the effects of pollutants in non-target species, and therefore enables analysis of the effects on ecosystems.
This book will be of interest to anyone interested in developing new biomarker species with high degrees of ecological relevance. It will serve as a useful resource for regulatory and research toxicologists, particularly those studying freshwater, marine water and sediment environments.

Table of Contents

Section Title Page Action Price
Cover Cover
Preface vii
Contents xi
Section I: Aquatic Invertebrates as Experimental Models 1
Chapter 1 The Comet Assay in Aquatic (Eco)genotoxicology Using Non-conventional Model Organisms: Relevance, Constraints and Prospects 3
1.1 Introduction 3
1.2 The Comet Assay in Aquatic Ecotoxicology: Role of Unconventional Models 7
1.2.1 Aquatic Ecosystems as the Ultimate Fate for Pollutants 7
1.2.2 Unconventional Models in the Biomonitoring of Aquatic Ecosystems 11
1.3 Application of the Comet Assay in Non-conventional Aquatic Models 12
1.3.1 Fish and Other Vertebrates 12
1.3.2 Molluscs 15
1.3.3 Other Organisms: From Crustaceans to Algae 16
1.4 Methods 17
1.4.1 The Comet Assay and its Modifications: Discriminating Type of Damage and Addressing DNA Repair in Unconventional Aquatic Models 17
1.4.2 Final Remarks on Analysis and Interpretation of Data 23
Abbreviations 24
References 24
Chapter 2 Adverse Effects of Pharmaceutical Products in the Marine Environment: The Use of Non-target Species to Evaluate Water and Sediment Matrices 33
2.1 Pharmaceuticals in Environmental Matrices 33
2.2 Adverse Effects of Pharmaceutical Products on Aquatic Biota 35
2.2.1 Laboratory Studies 35
2.2.2 Short-term Assays 35
2.2.3 Biomarkers of Stress and Effect 37
2.2.4 In situ Studies 40
2.3 Final Considerations 41
Acknowledgments 42
References 42
Chapter 3 Rotifers as Models for Ecotoxicology and Genotoxicology 48
3.1 Rotifers as Models for Ecotoxicology 48
3.2 Rotifers as Models for Genotoxicology 50
3.2.1 Environmental Genomics 50
3.2.2 Single Cell Electrophoresis (Comet Assay) 52
3.2.3 Cell Cycle Parameters 53
3.2.4 Micronucleus, Nuclear Abnormalities, Microsomal and Mutagenic Assays 54
3.3 Cytogenetics 56
3.3.1 Chromosome Damage 57
3.3.2 Nuclear Morphology 57
3.3.3 Sister Chromatid Exchange 58
3.4 DNA Damage 58
3.4.1 DNA Damage and Rotifers 59
3.4.2 Rotifer Strategies 60
3.4.3 DNA Biomarkers 60
3.4.4 Mutations in Rotifers 60
References 61
Chapter 4 Prospects of Molluscan Immunomarkers in Monitoring Aquatic Toxicity 70
4.1 Introduction 70
4.2 Aquatic Toxins 71
4.3 Routes of Toxin Entry in Molluscs: An Important Aspect of the Biomarker Approach to Toxicity Monitoring 72
4.4 Molluscs as Toxicity-monitoring Species 73
4.5 Immunological Characteristics of Molluscs 74
4.6 Molluscan Immunomarker Approach for Estimation of the Toxicity of Natural Water 75
4.7 Potential Immunomarkers of Aquatic Toxicity 78
4.7.1 Mucus Exudation Response of Molluscs as a Marker of Toxicity of Suspended Particulates of Water Column 79
4.7.2 Hemocytes: A Major Source of Cellular and Humoral Immunomarkers of Freshwater Toxicity 80
Acknowledgments 99
References 100
Chapter 5 Application of the Zebra Mussel (Dreissena polymorpha) in the Toxicity Evaluation of Emerging Aquatic Pollutants 107
5.1 Introduction 107
5.2 Experimental Design 110
5.2.1 Biomarker Methods 111
5.2.2 Biomarker Response Index (BRI) 112
5.2.3 Statistical Analysis 113
5.3 Discussion of Obtained Results 113
5.4 Conclusions 119
References 120
Chapter 6 Crayfish: An Experimental Model for Examining Exposure to Environmental Contamination 124
6.1 Introduction 124
6.1.1 Background 124
6.1.2 Phylogeny and Distribution 125
6.1.3 Habitat and Range 125
6.1.4 Life History Strategies 127
6.1.5 General Anatomy and Physiology 128
6.1.6 Crayfish Ecology 129
6.1.7 Human Activities That Impact Crayfish 130
6.1.8 Using Crayfish as Bioindicators 130
6.2 Pharmaceuticals 131
6.3 Agricultural Chemicals 132
6.3.1 Herbicides 133
6.3.2 Insecticides 134
6.4 Metals 136
6.4.1 Lethality 136
6.4.2 Bioaccumulation 137
6.4.3 Physiological and Behavioral Impacts 139
6.5 Physiological Responses to Contaminants 140
6.6 Conclusions 145
References 146
Chapter 7 The Crayfish Cambarellus montezumae as a Possible Freshwater Non-conventional Biomonitor 157
7.1 Introduction 157
7.2 Freshwater Biomonitors: Characteristics and Relevance for the Ecosystem 159
7.3 Distribution and Taxonomy of Freshwater Crayfishes 162
7.4 General Characteristics of Cambarellus montezumae 163
7.5 Ecotoxicology as a Tool to Assess Aquatic Ecosystem Health 167
7.6 Use of Crayfishes in Aquatic Ecosystem Biomonitoring 170
7.7 Cambarellus montezumae as a Biomonitor in Freshwater Ecosystems 171
References 174
Chapter 8 Freshwater Crabs Potamonautes spp. (Malacostraca, Potamonautidae) as a Model in Nanotoxicity Studies 180
8.1 Introduction 180
8.2 Life History of Potamonautes spp. 181
8.3 Significance of Crustacean Crabs Potamonautes spp. as Test Species 182
8.4 Toxicity of NMs 184
8.5 Fate and Behaviour of NPs in the Aquatic Environment 184
8.6 Potamonautes spp.: Uptake, Tissue Localization and Toxicity 185
8.7 Sensitivity of Potamonautes spp. to Common Environmental Stressors 186
8.8 Conclusion 187
Acknowledgments 187
References 187
Chapter 9 Freshwater Prawns Macrobrachium borellii and Palaemonetes argentinus (Crustacea: Palaemonidae) as Valid Indicators of Organophosphate Pesticide Exposure. A Biochemical Assessment 196
9.1 Introduction 197
9.1.1 Crustaceans 197
9.1.2 Pollution/Toxicology 198
9.2 Results 199
9.2.1 Pesticides and Membranes 199
9.2.2 Pesticides and Cholinesterases 200
9.2.3 Pesticide and Antioxidant Enzymes 202
9.3 Conclusion 206
Acknowledgments 207
References 207
Chapter 10 The Crab Ucides cordatus (Malacostraca, Decapoda, Brachyura) and Other Related Taxa as Environmental Sentinels for Assessment and Monitoring of Tropical Mangroves from South America 212
10.1 Anthropic History: Actions vs. Reaction 213
10.2 Coastal Environments: Biodiversity and Conservation 213
10.3 Mangrove Ecosystem: Importance and Threats 214
10.4 Contaminants: Main Types, Origins and Effects on Biota 216
10.5 Environmental Monitoring Based on Biomarkers 219
10.6 Sampling Design: Spatial Distribution, Replicates, and Other Parameters 222
10.7 Case Study of Mangrove Crab Ucides cordatus and Other Semi-terrestrial Brachyuran Crabs 223
Acknowledgments 233
References 233
Section II: Aquatic Vertebrates as Experimental Models 243
Chapter 11 The Use of Fish as Model Aquatic Organisms in Genotoxicity Studies 245
11.1 Introduction 245
11.2 Fish as Model Organisms in Genetic Toxicology 246
11.3 Genotoxicity Techniques 247
11.3.1 Cytogenetic Techniques 247
11.3.2 The Micronucleus Test 249
11.3.3 Nuclear Abnormalities in Fish Erythrocytes 252
11.3.4 Micronucleus Test Protocols with Different Fish Tissues 254
11.3.5 Comet Assay 258
11.4 Experimental Designs 261
11.5 Guppy and Peppered Cory as Non-conventional Aquatic Models for Genotoxicity Studies 267
References 270
Chapter 12 Genotoxic and Biochemical Responses Triggered by Polycyclic Aromatic Hydrocarbons in Freshwater and Marine Fish: Tambaqui and Seahorse as Bioindicators 278
12.1 Introduction 279
12.2 Contamination by Polycyclic Aromatic Hydrocarbons (PAHs) 280
12.3 The Effects of Water's Physical and Chemical Parameters on the Toxicity of Contaminants 281
12.4 The Effects of PAHs on Cellular and Genetic Properties and on the Responses of Antioxidant and Detoxification Enzymes 282
12.5 The Amazonian Fish Colossoma macropomum (Osteichthyes, Serrasalmidae) as a Model to Assess Water Pollution 283
12.5.1 Crude Oil Contamination 284
12.6 Seahorse Hippocampus reidi (Osteichthyes, Syngnatidae) as a Model to Assess Marine and Estuary Water Pollution 288
Acknowledgments 292
References 293
Chapter 13 Blenniidae and Syngnathidae: Partially Unexplored Reservoirs of Sentinel Species for Environmental Monitoring Studies 305
13.1 Introduction 305
13.2 Blenniidae 307
13.2.1 Habitat and Distribution 307
13.2.2 Reproduction 308
13.2.3 Use as Sentinel Species in Monitoring Studies 309
13.2.4 Response to Genotoxic Compounds 310
13.2.5 Response to Estrogenic Chemicals 311
13.3 Syngnathids 312
13.3.1 Habitat and Distribution 312
13.3.2 Reproduction 313
13.3.3 Use as Sentinel Species in Monitoring Studies 315
13.4 Conclusion and Future Perspectives 319
References 320
Chapter 14 The Use of the Ten Spotted Live-bearer Fish Cnesterodon decemmaculatus (Jenyns, 1842) (Pisces, Poeciliidae) in the Genotoxic Evaluation of Environmental Pollutants 327
14.1 Introduction 327
14.2 Fish as a Model for Aquatic Genotoxicology 331
14.3 Perspectives 342
Acknowledgments 342
References 343
Chapter 15 Genotoxicity in Urodele Amphibians Pleurodeles waltl and Ambystoma mexicanum (Lissamphibia, Caudata) Exposed to Freshwater Pollutants: A Historical View 347
15.1 Introduction 347
15.2 Origins 348
15.3 Biology and Status of Pleurodeles waltl and Ambystoma mexicanum 349
15.4 Genotoxicity Testing in Urodeles Using the Micronucleus Assay 349
15.4.1 From the Idea to the Standardized Protocol 349
15.4.2 Protocol and Practicability of the Newt Micronucleus Test 351
15.4.3 Genotoxicity Testing of Chemical Substances and (Nano)particles 353
15.4.4 Contribution to Human Public Health and Water Quality Assessment 354
15.5 Genotoxicity in Pleurodeles Larvae: Investigations on the Mechanisms of Action 358
15.5.1 Use of Organic and Inorganic Contaminants as Model Molecules 358
15.5.2 DNA Lesions Revealed by the Alkaline Comet Assay, Another Method for Genotoxicity Testing 358
15.6 P. waltl and A. mexicanum as Interesting Tools for Developmental and Molecular Toxicology 359
15.7 Eco(geno)toxicity Testing with Pleurodeles in Environmentally Relevant Approaches: A Contribution to Ecosystem Health 361
15.7.1 Use of Micro- and Mesocosms for the Environmental Evaluation of Nanoparticles 361
15.7.2 Ecogenotoxicity Monitoring with Urodeles in Field Settings 362
15.8 Conclusion 362
Acknowledgments 364
References 364
Chapter 16 The Use of Aquatic Life-stages of European Amphibians in Toxicological Studies 371
16.1 Introduction 371
16.2 Aquatic Life-stages of Amphibians as Test Organisms in Toxicological Studies 373
16.3 Short Review of Toxicological Studies Using Aquatic Life-stages of European Amphibians 381
16.3.1 European Newts and Salamanders 381
16.3.2 European Frogs and Toads 385
16.4 Fish as Standard Test Organisms Used in Pesticide Approval 394
16.5 Environmentally Relevant Pesticide Concentrations 394
16.6 Conclusions 395
Acknowledgments 396
References 396
Chapter 17 Developmental Stages of Rhinella arenarum (Anura, Bufonidae) in Toxicity Studies: AMPHITOX, a Customized Laboratory Assay 407
17.1 Introduction 407
17.2 Experimental 409
17.2.1 Aquisition of Rhinella arenarum Embryos and Larvae 409
17.2.2 Toxicity Tests 409
17.2.3 Effects Assessment 410
17.2.4 Data Analysis 411
17.3 Results and Discussion 411
17.3.1 Acute, Short-term Chronic and Chronic Toxicity Studies 411
17.3.2 Stage-dependent Sensitivity Studies 412
17.3.3 Early Life Stage (ELS) Studies 414
17.3.4 Studies on the Complete Development, From Blastula to Metamorphosis 417
17.4 Conclusion 417
Acknowledgments 419
References 419
Chapter 18 Hypsiboas pulchellus (Anura, Hylidae) Tadpoles, a Novel Amphibian Experimental Model in Aquatic Pollution Research 425
18.1 Introduction 425
18.2 Hypsiboas pulchellus as a Model in Aquatic Acute Toxic and Genotoxic Studies 428
18.3 Hypsiboas pulchellus as a Biotic Matrix in Acute Lethality Studies 429
18.4 Hypsiboas pulchellus as Biotic Matrix for the Single Cell Gel Electrophoresis or Comet Assay 430
18.5 Hypsiboas pulchellus as a Biotic Matrix for the Micronucleus Assay and Assays of Other Nuclear Abnormalities 432
18.6 Hypsiboas pulchellus as Biotic Matrix for the Other Sublethal Endpoints 437
18.7 Perspectives 438
Acknowledgments 438
References 438
Chapter 19 Chemical Threats to Sea Turtles 442
19.1 Introduction 442
19.2 Body Burden of Chemical Pollutants in Sea Turtles 443
19.2.1 Persistent Organic Pollutants 443
19.2.2 Inorganic Pollutants 445
19.3 Biological Factors Influencing Pollutant Concentrations 447
19.3.1 Body Condition 447
19.3.2 Diet and Trophic Level 448
19.3.3 Size (as a Proxy for Age) 449
19.3.4 Sex and Maternal Transfer 450
19.4 Effects of Toxic Pollutants in Sea Turtles 450
19.5 Biomarkers of Exposure 453
19.6 Conclusions 455
References 456
Chapter 20 Biomarkers of Environmental Contamination in Reptile Species: The Effect of Pesticide Formulations on Broad-snouted Caiman Caiman latirostris (Crocodilia, Alligatoridae) 467
20.1 Introduction 468
20.2 Biomarkers of Early Warning for Pesticide Contamination 469
20.2.1 Genotoxicity 469
20.2.2 Oxidative Stress Parameters 471
20.2.3 Growth 473
20.3 Effects of Pesticide Formulations on Caiman latirostris Exposed Under Controlled Conditions 474
20.3.1 Commercial Formulations 474
20.3.2 Exposure of Embryos to Pesticide Formulations by Topical Application on the Eggshell (In Ovo Exposure) 474
20.3.3 Effects of Pesticide Formulations and Mixtures on Caimans Exposed During Their First Months of Life 485
20.4 Final Considerations 493
20.5 Concluding Remarks 505
20.6 The Major Aim: Assessing Environmental Exposure of Natural Populations 506
Acknowledgments 507
References 507
Chapter 21 Epilogue and Final Remarks 518
Subject Index 525