1Chapter-1
1065.1.4 Hormonal Regulation of Osmoregulation
2Introduction to Fish Ecophysiology
1075.1.5 Environmental Factors Impacting Osmoregulation
31.1 Overview of Fish Physiology
1085.1.6 Evolutionary Perspectives on Osmoregulation
41.1.1 Morphology and Anatomy
1095.1.7 Human Impacts and Conservation
51.1.2 Biochemical Processes
1105.2 Regulation of Water Balance in Freshwater and Marine Fish
61.1.3 Sensory Systems
1115.2.1 Osmoregulation in Freshwater Fish: 5.2.2 Osmoregulation in Marine Fish
71.1.4 Reproductive Strategies
1125.3 Ion Regulation and Excretion Mechanisms
81.1.5 Physiological Responses to Environmental Stressors
1135.3.1 Ion Uptake in Fish
91.1.6 Interactions with Other Organisms
1145.3.2 Ion Excretion in Fish
101.2 The Ecological Context of Fish Physiology
1155.3.3 Hormonal Regulation of Ion Balance in Fish
111.2.1 Habitat Characteristics
116Conclusion
121.2.2 Trophic Interactions
117Questions: References
131.2.3 Environmental Variability
118Chapter-6
141.2.4 Anthropogenic Impacts
119Feeding and Digestive Physiology
151.3 Evolutionary Adaptations in Fish Ecophysiology
1206.1 Introduction to Feeding and Digestive Physiology
161.3.1 Respiratory Adaptations
1216.1.1 Filter Feeding
171.3.2 Osmoregulatory Adaptations
1226.1.2 Carnivorous Feeding
181.3.3 Feeding and Digestive Adaptations
1236.1.3 Herbivorous Feeding
191.3.4 Loco-motor Adaptations
1246.1.4 Omnivorous Feeding
201.4 Scope and Objectives of the Book
1256.1.5 Scavenging
211.4.2 Integration of Ecological Context
1266.1.6 Parasitic Feeding
221.4.4 Application to Conservation and Management
1276.2 Anatomy and Function of the Fish Digestive System
231.4.5 Interdisciplinary Approach
1286.2.1 General Anatomy of the Fish Digestive System
24Conclusion
1296.2.2 Adaptations for Different Feeding Strategies: 6.2.3 Regulation of Digestive Processes
25Questions: References
1306.3 Digestive Enzymes and Nutrient Absorption
26Chapter-2
1316.3.1 Types of Digestive Enzymes
27Environmental Factors Influencing Fish Physiology
1326.3.2 Regulation of Digestive Enzyme Activity: 6.3.3 Mechanisms of Nutrient Absorption
282.1 Water Quality Parameters and Their Effects
1336.4 Ecological Implications of Feeding Physiology
292.1.1 Temperature
1346.4.1 Trophic Relationships and Food Webs
302.1.2 Dissolved Oxygen
1356.4.2 Keystone Species and Ecosystem Stability
312.1.3 pH
1366.4.3 Nutrient Cycling and Ecosystem Productivity
322.1.4 Salinity
1376.4.4 Habitat Modification and Ecosystem Engineering
332.1.5 Nutrient Levels
1386.4.5 Human Impacts and Conservation Considerations
342.2 Temperature and its Impact on Fish Physiology
139Conclusion
352.2.1 Thermal Tolerance and Optimal Range
140Questions: References
362.2.2 Metabolic Rate and Growth
141Chapter-7
372.2.3 Reproductive Physiology
142Reproductive Physiology
382.2.4 Oxygen Demand and Respiratory Physiology
1437.1 Reproductive Strategies in Fish
392.2.5 Behavioral Responses to Temperature Stress
1447.1.1 Mating Behaviors
402.3 Oxygen Availability and Respiration
1457.1.2 Spawning Techniques
412.3.1 Importance of Oxygen for Fish Respiration
1467.1.3 Parental Care Dynamics
422.3.2 Factors Affecting Oxygen Availability
1477.1.4 Reproductive Strategies and Environmental Adaptations
432.3.3 Oxygen Gradients and Stratification
1487.1.5 Evolutionary Significance of Reproductive Strategies
442.3.4 Behavioral Responses to Oxygen Stress
1497.2 Endocrine Regulation of Reproduction
452.3.5 Physiological Adaptations for Oxygen Uptake
1507.2.1 Gonadotropin-Releasing Hormone (GnRH)
462.4 Salinity and Osmoregulation
1517.2.2 Gonadotropins: LH and FSH
472.4.1 Osmoregulatory Challenges in Different Environments
1527.2.3 Sex Steroid Hormones: Testosterone and Estrogen
482.4.2 Osmoregulatory Mechanisms
1537.2.4 Pheromones and Reproductive Signaling
492.4.3 Adaptations to Varying Salinity Environments: 2.4.4 Ecological Implications of Salinity Adaptations
1547.2.5 Thyroid Hormones: T3 and T4
502.5 pH and its Effects on Fish Physiology
1557.2.6 Stress Hormones: Cortisol and Glucocorticoids
512.5.1 Acid-Base Balance and Ion Regulation
1567.3 Gamete Production and Fertilization
522.5.2 Respiratory Function and Gas Exchange
1577.3.1 Gametogenesis: Spermatogenesis
532.5.3 Enzyme Activity and Metabolic Function
1587.3.2 Gametogenesis: Oogenesis: 7.3.3 Fertilization
542.5.4 Behavioral Responses and Acclimation
1597.4 Parental Care and Offspring Development
552.5.5 Ecological Implications and Conservation Considerations
1607.4.1 Types of Parental Care
56Conclusion
1617.4.2 Nest Building and Maintenance
57Questions: References
1627.4.3 Larval Care and Provisioning
58Chapter-3
1637.4.4 Cooperative Breeding
59Respiratory Physiology of Fish
1647.4.5 Parental Investment and Offspring Fitness
603.1 Anatomy and Function of Fish Gills
1657.4.6 Environmental and Anthropogenic Impacts
613.1.1 Structure of Fish Gills
1667.4.7 Conservation and Management Implications
623.1.2 Countercurrent Exchange Mechanism
167Conclusion
633.1.3 Respiratory Pigments
168Questions: References
643.1.4 Adaptations for Oxygen Uptake
169Chapter-8
653.1.5 Environmental Influences on Gill Function
170Sensory Physiology
663.2 Mechanisms of Gas Exchange in Fish
1718.1 Sensory Systems in Fish
673.2.1 Role of Fish Gills in Gas Exchange
1728.1.1 Vision
683.2.2 Diffusion of Gases
1738.1.2 Olfaction
693.2.3 Respiratory Adaptations
1748.1.3 Hearing
703.2.4 Factors Influencing Gas Exchange Efficiency
1758.1.4 Mechanoreception
713.3 Adaptations for Air Breathing in Aquatic Environments
1768.1.5 Electroreception
723.3.1 Evolutionary Origins of Air Breathing
1778.1.6 Magnetoreception
733.3.2 Structural Adaptations for Air Breathing
1788.2 Vision and Photoreception
743.3.3 Behavioral Adaptations for Air Breathing
1798.2.1 Anatomy of the Fish Eye
753.3.4 Physiological Mechanisms of Air Breathing
1808.2.2 Photoreceptor Cells
763.3.5 Environmental Influences on Air Breathing
1818.2.3 Visual Adaptations in Fish
77Questions: References
1828.2.4 Ecological Significance of Vision
78Chapter 4
1838.3 Olfaction and Chemical Communication
79Circulatory Systems and Blood Physiology
1848.3.1 Anatomy and Physiology of Olfactory System
804.1 Structure and Function of Fish Hearts
1858.3.2 Chemical Reception and Signal Processing
814.1.1 Anatomy of Fish Hearts
1868.3.3 Chemical Communication
824.1.2 Physiology of Fish Hearts
1878.3.4 Ecological Implications
834.1.3 Adaptations of Fish Hearts
1888.3.5 Future Directions
844.1.4 Blood Flow Regulation
1898.4 Hearing and Acoustic Communication
854.1.5 Oxygen Transport
1908.4.1 Anatomy of the Auditory System
864.1.6 Temperature Regulation
1918.4.2 Physiology of Hearing
874.2 Blood Composition and Circulatory Dynamics
1928.4.3 Acoustic Communication
884.2.1 Blood Components
1938.4.4 Ecological Significance
894.2.2 Oxygen Transport and Gas Exchange: 4.2.3 Nutrient Transport and Metabolic Regulation
1948.4.5 Future Directions
904.3 Oxygen Transport in Fish Blood
195Conclusion
914.3.1 Oxygen Uptake at the Gills
196Questions: References
924.3.2 Oxygen Binding to Hemoglobin: 4.3.3 Oxygen Delivery to Tissues
197Chapter 9
934.4 Adaptations for Buoyancy Regulation
198Behavioural Ecology and Physiology
944.4.1 Swim Bladders and Buoyancy Control
1999.1 Behavioural Responses to Environmental Changes
954.4.2 Hydrodynamic Adaptations
2009.1.1 Migration Patterns
964.4.3 Buoyancy Adaptations in Deep-sea Fish
2019.1.2 Feeding Behavior
974.4.4 Behavioral Strategies
2029.1.3 Social Interactions: 9.1.4 Predator-Prey Interactions
98Conclusion
2039.2 Foraging Strategies and Feeding Behavior
99Questions: Reference
2049.2.1 Feeding Morphology and Specializations
100Chapter-5
2059.2.2 Foraging Modes and Strategies
101Osmoregulation and Ionic Balance
2069.2.3 Feeding Ecology and Trophic Interactions
1025.1 Principles of Osmoregulation
207Conclusion
1035.1.1 Osmotic Pressure and Ion Regulation
208Questions: References
1045.1.2 Osmoconformers vs. Osmoregulators
209Glossary
1055.1.3 Osmoregulatory Adaptations
210Index
