Download or read book Comparative Study on Drosophila Larval Locomotion and Neuromuscular Junction Morphology written by Emma Yunyi Yang and published by . This book was released on 2013 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Closely related Drosophila species are ideal models for understanding evolutionary processes. Here we characterize phenotypic variations in locomotion patterns and Neuromuscular Junction morphology within related Drosophila species, D. melanogaster, D. simulans, D. sechellia, D. pseudoobscura, and D. busckii, and demonstrate possible mechanisms underlying these phenotypic differences. We describe larval peristaltic crawling in terms of speed, rate of contractions and dispersal efficiency. Comparisons across species show species-specific pattern of larval locomotion. Quantitative analyses on the NMJ anatomy reveal that the pattern of NMJ morphology correlates with larval locomotor behaviors, and suggests the observed differences in locomotion may be explained by variations in NMJ morphology. We also perform hybrid studies to investigate the inheritance pattern of these traits by using the sibling species D. melanogaster, D. simulans, and D. sechellia. We are able to demonstrate that NMJ formation, larval movement speed, and larval dispersal efficiency are associated with X-linked genes, while the rate of peristaltic contractions is maternally influenced.
Download or read book Genetic and Evolutionary Analysis of the Drosophila Larval Neuromuscular Junction written by and published by . This book was released on 2012 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although evolution of brains and behaviors is of fundamental biological importance, we lack comprehensive understanding of the general principles governing these processes or the specific mechanisms and molecules through which the evolutionary changes are effected. Because synapses are the basic structural and functional units of nervous systems, one way to address these problems is to dissect the genetic and molecular pathways responsible for morphological evolution of a defined synapse. I have undertaken such an analysis by examining morphology of the larval neuromuscular junction (NMJ) in wild caught D. melanogaster as well as in over 20 other species of Drosophila. Whereas variation in NMJ morphology within a species is limited, I discovered a surprisingly extensive variation among different species. Compared with evolution of other morphological traits, NMJ morphology appears to be evolving very rapidly. Moreover, my data indicate that natural selection rather than genetic drift is primarily responsible for evolution of NMJ morphology. To dissect underlying molecular mechanisms that may govern NMJ growth and evolutionary divergence, I focused on a naturally occurring variant in D. melanogaster that causes NMJ overgrowth. I discovered that the variant mapped to Mob2, a gene encoding a kinase adapter protein originally described in yeast as a member of the Mitotic Exit Network (MEN). I have subsequently examined mutations in the Drosophila orthologs of all the core components of the yeast MEN and found that all of them function as part of a common pathway that acts presynaptically to negatively regulate NMJ growth. As in the regulation of yeast cytokinesis, these components of the MEN appear to act ultimately by regulating actin dynamics during the process of bouton growth and division. These studies have thus led to the discovery of an entirely new role for the MEN--regulation of synaptic growth--that is separate from its function in cell division. This work has identified a rich source of material for discovery of novel genes and mechanisms that regulate synaptic growth and development, and has also provided new insights into the mechanisms that underlie morphological evolution of nervous systems.
Download or read book Neuromuscular Junctions in Drosophila written by and published by Academic Press. This book was released on 1999-04-29 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neuromuscular Junctions in Drosophila gathers the main contributions that research using the fruit fly Drosophila melanogaster has made in the area of synapse development, synapse physiology, and excitability of muscles and nerve cells. The chapters in this book represent a synthesis of major advances in our understanding of neuronal development and synaptic physiology, which have been obtained using the above approach.This book is directed to the general neuroscience audience: researchers, instructors, graduate students, and advanced undergraduates who are interested in the mechanisms of synapse development and physiology. However, the book will also be a valuable resource for those that use the fruit fly as a model system in their laboratories.Key Features* Synthesizes the genetic approaches used to study synaptic development and function at the neuromuscular junction, using flies as a model system* Covers major recent advances in muscle development, pathfinding, synapse maturation and plasticity, exo- and endocytosis, and ion channel function* Written in clear language that is easily understandable to readers not already familiar with fruit fly research* Includes numerous diagrams and extensive reference lists
Download or read book Comparative Analysis of Muscle and Locomotion Patterns in Drosophila Species written by Mirela Belu and published by . This book was released on 2011 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Drosophila, muscle cells develop from the mesoderm, the middle germ layer of the embryo. During myogenesis each muscle fiber in the pattern is prefigured by a single founder cell, which seeds muscle formation by fusing with surrounding fusion-competent myoblasts. In this work, we have examined the fate of mesodermal precursors in four Drosophila species that display variations in mesoderm size. We characterized a newly discovered morphological difference in muscle size and locomotion patterns between these species. First, our comparison indicates that the overall muscle pattern is conserved while the total number of myoblasts within a fiber is species- specific and depends on the mesoderm width. This suggests that the number of founder cells has not changed during evolution, while the cell-counting mechanism that regulates myoblast fusion is differently regulated. Second, we find that each species display characteristic NMJs and locomotion patterns which are not depended exclusively on muscle size. Finally, we provide evidence for a maternal inheritance of both muscle size and locomotion behavior in third instar larvae.
Download or read book Drosophila written by Therese A. Markow and published by Elsevier. This book was released on 2005-11-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anyone wishing to tap the research potential of the hundreds of Drosophila species in addition to D.melanogaster will finally have a single comprehensive resource for identifying, rearing and using this diverse group of insects. This is the only group of higher eukaryotes for which the genomes of 12 species have been sequenced.The fruitfly Drosophila melanogaster continues to be one of the greatest sources of information regarding the principles of heredity that apply to all animals, including humans. In reality, however, over a thousand different species of Drosophila exist, each with the potential to make their own unique contributions to the rapidly changing fields of genetics and evolution. This book, by providing basic information on how to identify and breed these other fruitflies, will allow investigators to take advantage, on a large scale, of the valuable qualities of these other Drosophila species and their newly developed genomic resources to address critical scientific questions.* Provides easy to use keys and illustrations to identify different Drosophila species* A guide to the life history differences of hundreds of species* Worldwide distribution maps of hundreds of species* Complete recipes for different Drosophila diets* Offers an analysis on how to account for species differences in designing and conducting experiments* Presents useful ideas of how to collect the many different Drosophila species in the wild
Download or read book Drosophilidae Diptera written by Irina Brake and published by BRILL. This book was released on 2013-01-21 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concerns about global biodiversity are rising dramatically, yet we are lagging behind in the most basic prerequisite for its understanding and conservation: the inventory. Insect species may make up five or ten times the number of all other plant and animal species combined, and as such they represent one of the major challenges in biosystematic science. World Catalogue of Insects is an initiative aiming at compiling worldscale, authoritative catalogues of monophyletic insect taxa. Volumes in this series contain standard nomenclatoral information on all names pertaining to the taxon treated, including type locality and distribution to the extent this is relevant. Additional information is optional, e.g., location, status and condition of types; biology; bibliographical information; pest status; vector status; etc. This volume nine focuses on Drosophilidae (Diptera). (Series: World Catalogue of Insects)
Download or read book Bisphenol A written by Pinar Erkekoglu and published by BoD – Books on Demand. This book was released on 2017-06-07 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bisphenol A (BPA) is a synthetic compound for hardening and clearing polycarbonate plastics. BPA is mainly classified as an estrogen-like endocrine-disrupting chemical. In the last decade, attention has arisen in scientific communities that it is not safe to use this chemical in mainly polycarbonate plastics. Exposure to BPA starts in prenatal period, which is the critical period for its toxic effects on different organs. Throughout this book, the readers will obtain information on the effects of BPA on different systems. They will also get information on the prenatal and postnatal effects of BPA. We believe that readers will get qualified scientific knowledge and a general overview of the toxic effects of BPA exposure and its consequences from this book.
Download or read book Behavioral Genetics of the Fly Drosophila Melanogaster written by Josh Dubnau and published by Cambridge University Press. This book was released on 2014-06-26 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive portrayal of the behaviour genetics of the fruit fly (Drosophila melanogaster) and the methods used in these studies.
Download or read book Myofibrillogenesis written by Dipak K. Dube and published by Springer Science & Business Media. This book was released on 2001-10-19 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Myofibrillogenesis has been studied extensively over the last 100 years. Until recently, we have not had a comprehensive understanding of this fundamental process. The emergence of new technologies in molecular and cellular biology, combined with classical embryology, have started to unravel some of the complexities of myofibril assembly in striated muscles. In striated muscles, the contractile proteins are arranged in a highly ordered three dimensional lattice known as the sarcomere. The assembly of a myofibril involves the precise ordering of several proteins into a linear array of sarcomeres. Multiple isoforms in many of these proteins further complicate the process, making it difficult to define the precise role of each component. This volume has been compiled as a comprehensive reference on myofibrillogenesis. In addition, the book includes reviews on myofibrillar disarray under various pathological conditions, such as familial hypertrophic cardiomyopathy (FHC), and incorporates a section on the conduction system in the heart. Much of the information in this volume has not been described elsewhere. Presented in a manner to be of value to students and teachers alike, "Myofibrillogenesis" will be an invaluable reference source for all in the fields of muscle biology and heart development.
Download or read book Muscles and Their Neural Control written by Graham Hoyle and published by John Wiley & Sons. This book was released on 1983 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neurologie, Muskel, Muskelphysiologie.
Download or read book The Fly Neuromuscular Junction Structure and Function written by Vivian Budnik and published by Elsevier. This book was released on 2006-11-02 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Drosophila larval neuromuscular junction (NMJ) has become one of the most powerful model systems to ask key neurobiological questions. This synapse is unparalleled by its accessibility, its simplicity, and the ability to manipulate genes important for synapse development and function. Its synapses have properties shared by many organisms including humans. The vast majority of genes that when mutated cause congenital disorders of the nervous system in humans, are present in the fruit fly genome, and fly models of human disorders are available. Thus, this preparation is a powerful tool to understand the normal function of these genes. This book reviews outstanding work by recognized leaders in the fields of Drosophila cellular neurogenetics including developmental neurobiology, mechanisms of synaptic function, and experience dependent changes at synapses. The book also includes step-by-step protocols to study the cellular biology of the NMJ, making it a vital resource for researchers beginning their investigations with this system, for those who are training students and postdoctoral fellows in this area, or simply as a general reference material for neuroscientists and neuroscience professors in general.* Provides a synthesis of the main topics in modern neurogenetics* Includes step-by-step protocols for the use of the Drosophila NMJ system in neurobiology lab research* Offers genetic approaches to study synapse development and function*
Download or read book Drosophila melanogaster written by Farzana Khan Perveen and published by BoD – Books on Demand. This book was released on 2018-02-28 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains 12 chapters divided into two sections. Section 1 is "Drosophila - Model for Genetics." It covers introduction, chromosomal polymorphism, polytene chromosomes, chromosomal inversion, chromosomal evolution, cell cycle regulators in meiosis and nongenetic transgenerational inheritance in Drosophila. It also includes ecological genetics, wild-type strains, morphometric analysis, cytostatics, frequencies of early and late embryonic lethals (EEL and LEL) and mosaic imaginal discs of Drosophila for genetic analysis in biomedical research. Section 2 is "Drosophila - Model for Therapeutics." It explains Drosophila as model for human diseases, neurodegeneration, heart-kidney metabolic disorders, cancer, pathophysiology of Parkinson's disease, dopamine, neuroprotective therapeutics, mitochondrial dysfunction and translational research. It also covers Drosophila role in ubiquitin-carboxyl-terminal hydrolase-L1 (UCH-L1) protein, eye development, anti-dUCH antibody, neuropathy target esterase (NTE), organophosphorous compound-induced delayed neuropathy (OPIDN) and hereditary spastic paraplegia (HSP). It also includes substrate specificities, kinetic parameters of recombinant glutathione S-transferases E6 and E7 (DmGSTE6 and DmGSTE7), detoxification and insecticidal resistance and antiviral immunity in Drosophila.
Download or read book FPGA Prototyping by Verilog Examples written by Pong P. Chu and published by John Wiley & Sons. This book was released on 2011-09-20 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: FPGA Prototyping Using Verilog Examples will provide you with a hands-on introduction to Verilog synthesis and FPGA programming through a “learn by doing” approach. By following the clear, easy-to-understand templates for code development and the numerous practical examples, you can quickly develop and simulate a sophisticated digital circuit, realize it on a prototyping device, and verify the operation of its physical implementation. This introductory text that will provide you with a solid foundation, instill confidence with rigorous examples for complex systems and prepare you for future development tasks.
Download or read book Muscle Homeostasis and Regeneration written by Antonio Musarò and published by MDPI. This book was released on 2020-11-20 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a collection of original research and review articles addressing the intriguing field of the cellular and molecular players involved in muscle homeostasis and regeneration. One of the most ambitious aspirations of modern medical science is the possibility of regenerating any damaged part of the body, including skeletal muscle. This desire has prompted clinicians and researchers to search for innovative technologies aimed at replacing organs and tissues that are compromised. In this context, the papers, collected in this book, addressing a specific aspects of muscle homeostasis and regeneration under physiopathologic conditions, will help us to better understand the underlying mechanisms of muscle healing and will help to design more appropriate therapeutic approaches to improve muscle regeneration and to counteract muscle diseases.
Download or read book Neurobiology of Motor Control written by Scott L. Hooper and published by John Wiley & Sons. This book was released on 2017-09-05 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multi-disciplinary look at the current state of knowledge regarding motor control and movement—from molecular biology to robotics The last two decades have seen a dramatic increase in the number of sophisticated tools and methodologies for exploring motor control and movement. Multi-unit recordings, molecular neurogenetics, computer simulation, and new scientific approaches for studying how muscles and body anatomy transform motor neuron activity into movement have helped revolutionize the field. Neurobiology of Motor Control brings together contributions from an interdisciplinary group of experts to provide a review of the current state of knowledge about the initiation and execution of movement, as well as the latest methods and tools for investigating them. The book ranges from the findings of basic scientists studying model organisms such as mollusks and Drosophila, to biomedical researchers investigating vertebrate motor production to neuroengineers working to develop robotic and smart prostheses technologies. Following foundational chapters on current molecular biological techniques, neuronal ensemble recording, and computer simulation, it explores a broad range of related topics, including the evolution of motor systems, directed targeted movements, plasticity and learning, and robotics. Explores motor control and movement in a wide variety of organisms, from simple invertebrates to human beings Offers concise summaries of motor control systems across a variety of animals and movement types Explores an array of tools and methodologies, including electrophysiological techniques, neurogenic and molecular techniques, large ensemble recordings, and computational methods Considers unresolved questions and how current scientific advances may be used to solve them going forward Written specifically to encourage interdisciplinary understanding and collaboration, and offering the most wide-ranging, timely, and comprehensive look at the science of motor control and movement currently available, Neurobiology of Motor Control is a must-read for all who study movement production and the neurobiological basis of movement—from molecular biologists to roboticists.
Download or read book Entomology Abstracts written by and published by . This book was released on 2001 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Abstracts International written by and published by . This book was released on 1994 with total page 1192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
