- Copyright Page
- Oxford Handbooks in Neuroscience
- Editorial Board
- About the Editor
- Contributors
- Preface
- Recent Trends in Invertebrate Neuroscience
- The Divergent Evolution of Arthropod Brains: Ground Pattern Organization and Stability Through Geological Time
- Development of the Nervous System of Invertebrates
- Invertebrate Genomics Provide Insights Into the Origin of Synaptic Transmission
- Genetics of Behavior in C. elegans
- Genetic Analysis of Behavior in Drosophila
- Cnidarian Neurobiology
- Flatworm Neurobiology in the Postgenomic Era
- Morphology of Invertebrate Neurons and Synapses
- Neurotransmitters and Neuropeptides of Invertebrates
- Auditory Systems of Drosophila and Other Invertebrates
- Motion Vision in Arthropods
- Chemosensory Transduction in Arthropods
- Magnetoreception of Invertebrates
- Rhythmic Pattern Generation in Invertebrates
- The Feeding Network of Aplysia: Features That Are Distinctive and Shared With Other Molluscs
- Control of Locomotion in Hexapods
- Neural Control of Swimming in Nudipleura Molluscs
- Control of Locomotion in Annelids
- Control of Locomotion in Crustaceans
- Motor Control in Soft-Bodied Animals: The Octopus
- Nonassociative Learning in Invertebrates
- Associative Learning in Invertebrates
- The Vertical Lobe of Cephalopods: A Brain Structure Ideal for Exploring the Mechanisms of Complex Forms of Learning and Memory
- Mechanisms of Axonal Degeneration and Regeneration: Lessons Learned From Invertebrates
- Evolution and Design of Invertebrate Circadian Clocks
- Neurobiology of Reproduction in Molluscs: Mechanisms and Evolution
- Search Strategies for Intentionality in the Honeybee Brain
- Identifying Critical Genes, Neurotransmitters, and Circuits for Social Behavior in Invertebrates
- Rapid Neural Polyphenism in Cephalopods: Current Understanding and Future Challenges
- Index
Abstract and Keywords
This article compares the neural basis for swimming in sea slugs belonging to the Nudipleura clade of molluscs. There are two primary forms of swimming. One, dorsal/ventral (DV) body flexions, is typified by Tritonia diomedea and Pleurobranchaea californica. Although Tritonia and Pleurobranchaea evolved DV swimming independently, there are at least two homologous neurons in the central pattern generators (CPGs) underlying DV swimming in these species. Furthermore, both species have serotonergic neuromodulation of synaptic strength intrinsic to their CPGs. The other form of swimming is with alternating left/right (LR) body flexions. Melibe and Dendronotus belong to a clade of species that all swim with LR body flexions. Although the swimming behavior is homologous, their swim CPGs differ in both cellular composition and in the details of the neural mechanisms. Thus, similar behaviors have independently evolved through parallel use of homologous neurons, and homologous behaviors can be produced by different neural mechanisms.
Keywords: evolution, homologous neurons, neuromodulation, central pattern generator, mollusc, serotonin, behavior, swimming
Paul S. Katz, University of Massachusetts Amherst
Neuroscience Institute, Georgia State University
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- Copyright Page
- Oxford Handbooks in Neuroscience
- Editorial Board
- About the Editor
- Contributors
- Preface
- Recent Trends in Invertebrate Neuroscience
- The Divergent Evolution of Arthropod Brains: Ground Pattern Organization and Stability Through Geological Time
- Development of the Nervous System of Invertebrates
- Invertebrate Genomics Provide Insights Into the Origin of Synaptic Transmission
- Genetics of Behavior in C. elegans
- Genetic Analysis of Behavior in Drosophila
- Cnidarian Neurobiology
- Flatworm Neurobiology in the Postgenomic Era
- Morphology of Invertebrate Neurons and Synapses
- Neurotransmitters and Neuropeptides of Invertebrates
- Auditory Systems of Drosophila and Other Invertebrates
- Motion Vision in Arthropods
- Chemosensory Transduction in Arthropods
- Magnetoreception of Invertebrates
- Rhythmic Pattern Generation in Invertebrates
- The Feeding Network of Aplysia: Features That Are Distinctive and Shared With Other Molluscs
- Control of Locomotion in Hexapods
- Neural Control of Swimming in Nudipleura Molluscs
- Control of Locomotion in Annelids
- Control of Locomotion in Crustaceans
- Motor Control in Soft-Bodied Animals: The Octopus
- Nonassociative Learning in Invertebrates
- Associative Learning in Invertebrates
- The Vertical Lobe of Cephalopods: A Brain Structure Ideal for Exploring the Mechanisms of Complex Forms of Learning and Memory
- Mechanisms of Axonal Degeneration and Regeneration: Lessons Learned From Invertebrates
- Evolution and Design of Invertebrate Circadian Clocks
- Neurobiology of Reproduction in Molluscs: Mechanisms and Evolution
- Search Strategies for Intentionality in the Honeybee Brain
- Identifying Critical Genes, Neurotransmitters, and Circuits for Social Behavior in Invertebrates
- Rapid Neural Polyphenism in Cephalopods: Current Understanding and Future Challenges
- Index
