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Cytological Survey Of The Walleye Stizostedion Vitreum M Pituitary Gland In Relation To Annual Temperature Cycle And Its Reproductive Cycle
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Book Synopsis Cytological Survey of the Walleye (Stizostedion Vitreum, M.) Pituitary Gland in Relation to Annual Temperature Cycle and Its Reproductive Cycle by : Mack G. Cook
Download or read book Cytological Survey of the Walleye (Stizostedion Vitreum, M.) Pituitary Gland in Relation to Annual Temperature Cycle and Its Reproductive Cycle written by Mack G. Cook and published by . This book was released on 1974 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: The value of the walleye (Stizostedion vitreum, Mitchill) as a resource and as a member of the biotic community necessitates an accurate description of its reproductive endocrinology and a means of monitoring its reproductive status. This has been accomplished by a cytological survey of the pituitary of 100 walleyes from navigational pools 6 and 7 of the upper Mississippi River. Gonadal tissue was also removed and analyzed to determine the specific stage of the fish's reproductive cycle. Pituitaries were removed through a dorsal flap in the cranium during 1972 and 1973. The average diameter of gonadotrop cells was 10.59 u during March. This decreased to 8.79 u in July and a gradual increase occurred following the July value. Eta, MSH and thyrotrops followed this trend. In March eta cell diameters were 8.99 u, MSH cells were 8.34 u and, in April thyrotrops measured 8.04 u in diameter. These cell diameters decreased to 6.79 u for eta cells, 7.06 u for MSH cells and 6.7 u for thyrotrops. The gonadal cells increased in size and maturity from 472.8 u in March to 616.8 u in May. The optimum temperatures for spawning of 6.1 degrees C to 17.2 degrees C occurred from the beginning of March until the end of April. This corresponds with time of decreasing cell diameters seen in the pituitary. Presently the appearance of the pituitary cells, expecially gonadotrops, suggests a normal, unaltered condition. Unintentional or accidental disturbance of the habitat, most probably the parameter of temperature, would produce a change in the cycle of gonadotrop size changes.
Book Synopsis Endocrine and Gonadal Changes During the Annual Reproductive Cycle of Freshwater Teleost, Stizostedion Vitreum by : Jeffrey Allen Malison
Download or read book Endocrine and Gonadal Changes During the Annual Reproductive Cycle of Freshwater Teleost, Stizostedion Vitreum written by Jeffrey Allen Malison and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Relation of the Annual Reproductive Cycles of the Green Sunfish, Leponis Cyanellus (Rafinesque), to Seasonal Changes in Temperature and Photoperiod by : Calvin M. Kaya
Download or read book Relation of the Annual Reproductive Cycles of the Green Sunfish, Leponis Cyanellus (Rafinesque), to Seasonal Changes in Temperature and Photoperiod written by Calvin M. Kaya and published by . This book was released on 1971 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Histology of the Pituitary in Relation to the Reproductive Cycle of the Squirrel by : John P. Malec
Download or read book The Histology of the Pituitary in Relation to the Reproductive Cycle of the Squirrel written by John P. Malec and published by . This book was released on 1932 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Blue Gourami (Trichogaster Trichopterus): Model for Labyrinth Fish by : Gad Degani
Download or read book Blue Gourami (Trichogaster Trichopterus): Model for Labyrinth Fish written by Gad Degani and published by . This book was released on 2001 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Histology of Fishes by : Krzysztof Formicki
Download or read book The Histology of Fishes written by Krzysztof Formicki and published by CRC Press. This book was released on 2019-10-08 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a multi-authored book of 18 chapters comprising the state of the art work of all relevant topics on modern fish histology from 28 authors from ten countries. The topics include Introduction to Histological Techniques, Integument, Fish Skeletal Tissues, Muscular System, Structure and Function of Electric Organs, Digestive System, Glands of the Digestive Tract, Swim Bladder, Kidney, Ovaries and Eggs, Egg Envelopes, Testis Structure, Spermatogenesis, and Spermatozoa in Teleost Fishes, Cardiovascular System and Blood, Immune System of Fish, Gills: Respiration and Ionic-Osmoregulation, Sensory Organs, Morphology and Ecomorphology of the Fish Brain, and Endocrine System. Structural and functional aspects are treated and in a comparative way fish diversity at various taxonomic levels is integrated.
Book Synopsis Fundamentals of Ecotoxicology by : Michael C. Newman
Download or read book Fundamentals of Ecotoxicology written by Michael C. Newman and published by CRC Press. This book was released on 2019-11-27 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition is revised throughout and includes new and expanded information on natural resource damage assessment, the latest emerging contaminants and issues, and adds new international coverage, including case studies and rules and regulations. The text details key environmental contaminants, explores their fates in the biosphere, and discusses bioaccumulation and the effects of contaminants at increasing levels of ecological organization. Vignettes written by experts illustrate key themes or highlight especially pertinent examples. This edition offers an instructors' solution manual, PowerPoint slides, and supplemental images. Features: Adds all new discussions of natural resource damage assessment concepts and approaches Includes new vignettes written by leading guest authors Draws on materials from 2,500 cited sources, including 400+ new to this edition Adds numerous new entries to a useful glossary of 800+ terms Includes a new appendix discussing Brazilian environmental laws and regulations added to existing appendices outlining U.S., E.U., Chinese, Australian, and Indian environmental laws Fundamentals of Ecotoxicology: The Science of Pollution, Fifth Edition contains a broad overview of ecotoxicology and provides a basic understanding of the field. Designed as a textbook for use in introductory graduate or upper-level undergraduate courses in ecotoxicology, applied ecology, environmental pollution, and environmental science, it can also be used as a general reference for practicing environmental toxicologists.
Download or read book Agrindex written by and published by . This book was released on 1994 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aquaculture Genome Technologies by : Zhanjiang (John) Liu
Download or read book Aquaculture Genome Technologies written by Zhanjiang (John) Liu and published by John Wiley & Sons. This book was released on 2008-02-28 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genomics is a rapidly growing scientific field with applications ranging from improved disease resistance to increased rate of growth. Aquaculture Genome Technologies comprehensively covers the field of genomics and its applications to the aquaculture industry. This volume looks to bridge the gap between a basic understanding of genomic technology to its practical use in the aquaculture industry.
Book Synopsis Aquaculture and Fisheries Biotechnology by : Rex A. Dunham
Download or read book Aquaculture and Fisheries Biotechnology written by Rex A. Dunham and published by CABI. This book was released on 2023-02-28 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: The genetic improvement of fish for aquaculture and related fisheries has seen huge advances over recent years. Building upon the previous two editions of Aquaculture and Fisheries Biotechnology: Genetic Approaches, this 3rd edition offers a presentation of traditional selective breeding, modern genetic biotechnology, genomics, gene transfer and gene editing, and the latest developments in genetic biotechnology such as epigenetics, xenogenesis and genome-wide association study coupled with commercial application, the impact of government regulation and expectations for the future. It provides a firm grounding in relevant aspects of classical genetics, before focusing on particular aspects such as sex reversal and breeding as applied in aquaculture and fisheries. It also explores how more recent molecular genetics, genomics and biotechnology techniques can be used and combined in improvement programmes for fish and aquaculture species. A glossary explains the latest terminology used in biotechnology and genetics. This book will be useful for research scientists and students in marine biotechnology, aquaculture biotechnology, and fish genetics and breeding.
Book Synopsis Bioassay and Use of Pituitary Materials to Spawn Warm-water Fishes by : Howard Paul Clemens
Download or read book Bioassay and Use of Pituitary Materials to Spawn Warm-water Fishes written by Howard Paul Clemens and published by . This book was released on 1962 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: No detrimental effects of pituitary injections have been detected in incubating and hatching the eggs, or in rearing the fingerlings, from over 200 channel catfish spawns and thousands of goldfish spawns.
Book Synopsis Fish Diseases by : Wilhelm Schäperclaus
Download or read book Fish Diseases written by Wilhelm Schäperclaus and published by . This book was released on 1991 with total page 1398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fish Pathology by : Ronald J. Roberts
Download or read book Fish Pathology written by Ronald J. Roberts and published by John Wiley & Sons. This book was released on 2012-03-06 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish Pathology is the definitive, classic and essential book on the subject, providing in-depth coverage across all major aspects of fish pathology. This new, fully updated and expanded fourth edition builds upon the success of the previous editions which have made Fish Pathology the best known and most respected book in the field, worldwide.Commencing with a chapter covering the aquatic environment, the book provides comprehensive details of the anatomy and physiology of teleosts, pathophysiology and sytematic physiology, immunology, neoplasia, virology, parasitology, bacteriology, mycology, nutritional pathology and other non-infectious diseases. A final chapter provides extremely useful details of the most widely-used and trusted laboratory methods in the area. Much new infomation is included in this new edition, including enhanced coverage of any diseases which have become commercially significant since publication of the previous edition Beautifully illustrated in full colour throughout with many exceptional photographs, Fish Pathology, Fourth Edition, is an essential purchase for fish pathologists, fish veterinarians, biologists, microbiologists and immunologists, including all those working in diagnostic services worldwide. Personnel working in fish farming and fisheries will also find much of great use and interest within the book's covers. All libraries in universities and research establishments where biological and veterinary sciences are studied and taught should have copies of this landmark publication on their shelves.
Book Synopsis Use of Fish Pituitaries to Induce Spawning in Channel Catfish by : Kermit E. Sneed
Download or read book Use of Fish Pituitaries to Induce Spawning in Channel Catfish written by Kermit E. Sneed and published by . This book was released on 1960 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seventy-two pairs of channel catfish Ictalurus punctatus were induced to spawn in glass aquaria by injecting fish pituitary into the females. Control of peritoneal lesions, infections, and adhesions, was anticipated by including 10,000 unites of crystalline penicillin-G with each injection. Spawning was induced by injecting acetone-dried pituitaries from carp, buffalofish, flathead and channel catfish, and gar. Pituitaries from these various species differed little, regardless of time of collection. The amount of pituitary material required to induce spawning varied from 3 to 32 milligrams per pound of fish weight, given in from 1 to 28 injections, with an average of 3. Most females required 3 injections at 2 milligrams per pound of body weight every 24 hours. The period of time from the last injection to spawning varied from 2 1/2 hours to 72 hours, but averaged 16 to 24 hours.
Book Synopsis Broodstock Management and Egg and Larval Quality by : Niall R. Bromage
Download or read book Broodstock Management and Egg and Larval Quality written by Niall R. Bromage and published by Wiley-Blackwell. This book was released on 1995-02-17 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: At present, the supply of eggs and fry is one of the major constraints on future aquaculture development. For the majority of farmed species, production is totally dependent on harvesting of broodstocks or seed from wild populations At present we know little about the control of reproduction of most farmed finfish nor of the detailed nutrient, metabolic and husbandry requirements of the broodstock or the ways in which they might be managed to optimize seed production and improve the quality of eggs and larvae. Newer technologies such as ploidy and gender manipulation, induced spawning and cryopreservation are coming to the forefront of modern broodstock management and all of these topics are considered, in detail, in this new text. Broodstock Management and Egg and Larval Quality has been written as a standard text for commercial practitioners and students of aquaculture, fish biology and fisheries and provides a comprehensive review of current and future methods of broodstock and hatchery management. The range of marine and freshwater tropical and temperate finfish species considered, together with contributions from many of the world's most eminent fish biologists, provide comprehensive and international coverage of this increasingly important area of aquaculture.
Book Synopsis Sex Control in Aquaculture by : Hanping Wang
Download or read book Sex Control in Aquaculture written by Hanping Wang and published by John Wiley & Sons. This book was released on 2018-11-08 with total page 1810 pages. Available in PDF, EPUB and Kindle. Book excerpt: Awarded Bookauthority's "Best Aquaculture Books of all Time" A comprehensive resource that covers all the aspects of sex control in aquaculture written by internationally-acclaimed scientists Comprehensive in scope, Sex Control in Aquaculture first explains the concepts and rationale for sex control in aquaculture, which serves different purposes. The most important are: to produce monosex stocks to rear only the fastest-growing sex in some species, to prevent precocious or uncontrolled reproduction in other species and to aid in broodstock management. The application of sex ratio manipulation for population control and invasive species management is also included. Next, this book provides detailed and updated information on the underlying genetic, epigenetic, endocrine and environmental mechanisms responsible for the establishment of the sexes, and explains chromosome set manipulation techniques, hybridization and the latest gene knockout approaches. Furthermore, the book offers detailed protocols and key summarizing information on how sex control is practiced worldwide in 35 major aquaculture species or groups, including fish and crustaceans, and puts the focus on its application in the aquaculture industry. With contributions from an international panel of leading scientists, Sex Control in Aquaculture will appeal to a large audience: aquaculture/fisheries professionals and students, scientists or biologists working with basic aspects of fish/shrimp biology, growth and reproductive endocrinology, genetics, molecular biology, evolutionary biology, and R&D managers and administrators. This text explores sex control technologies and monosex production of commercially-farmed fish and crustacean species that are highly in demand for aquaculture, to improve feed utilization efficiency, reduce energy consumption for reproduction and eliminate a series of problems caused by mixed sex rearing. Thus, this book: Contains contributions from an international panel of leading scientists and professionals in the field Provides comprehensive coverage of both established and new technologies to control sex ratios that are becoming more necessary to increase productivity in aquaculture Includes detailed coverage of the most effective sex control techniques used in the world's most important commercially-farmed species Sex Control in Aquaculture is the comprehensive resource for understanding the biological rationale, scientific principles and real-world practices in this exciting and expanding field.
Book Synopsis The Theory and Practice of Induced Breeding in Fish by : Brian J. Harvey
Download or read book The Theory and Practice of Induced Breeding in Fish written by Brian J. Harvey and published by . This book was released on 1979 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
