Download or read book Swimbladder Allometry of Selected Midwater Fish Species written by Albert Brooks and published by . This book was released on 1976 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study examines the relationship of fish standard length to swimbladder length, width, and volume. The intra- and inter-specific variation is studied in over 1600 selected mesopelagic fish specimens belonging to 55 species from 9 families. These species are believed to account for most of the volume reverberation occurring throughout a large part of the Sargasso Sea. Regression equations presented in the report allow calculation of swimbladder volumes directly from measurements of fish standard length for 55 species of midwater fish. Additional equations allow the calculation of swimbladder length and width from measurements of the standard lengths of these same species. It is shown that for 40 species, bladder volume increases with increasing standard length. Slopes of the regression lines for 14 species are shown to be insignificant from zero. For one species, bladder volume decreases slightly with increasing standard length. Results of the study demonstrate that equations currently in use overestimate the volumes of the swimbladders and thus acoustic cross sections of many midwater fish species.
Download or read book A Review of the World Resources of Mesopelagic Fish written by J. Gjøsaeter and published by Food & Agriculture Org.. This book was released on 1980 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fish species can be called mesopelagic if it spends the day in the mesopelagic zone. The mesopelagic zone has been defined in different ways based on depth, temperature and light regimes. For the present purpose, depth seems to be the best criterion and mesopelagic fish can thus be defined as species generally spending the day at depths between approximately 200 and 1 000 m. Generally they perform a diel migration, coming to the upper 200 m or even to the surface during the night. The present report briefly reviews the systematics ecology and life history of important groups of mesopelagic fish. Further, some methods used for abundance estimation of these fish are described and discussed. The bulk of the report reviews the present knowledge of abundance and species composition of mesopelagic fish in each of the FAO statistical areas. Although the data in most cases are few, an attempt has been made to give tentative estimates of the biomass and production in the various areas. When available, information on the life history of the most important species in each area is also given.
Download or read book Reference written by and published by . This book was released on 1979 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 1989-10 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scale Pattern Estimates of Origin of Coho Salmon Taken in the Japanese Traditional Landbased Driftnet Salmon Fishery in 1990 written by Robert Victor Walker and published by . This book was released on 1991 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FAO Fisheries Technical Paper written by Food and Agriculture Organization of the United Nations and published by . This book was released on 1980 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Science written by and published by . This book was released on 1974 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oceanic Sound Scattering Prediction written by Neil R. Andersen and published by Plenum Publishing Corporation. This book was released on 1977 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Actes Du Symposium written by and published by . This book was released on 2003 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1976-04 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1976 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Journal of the Acoustical Society of America written by Acoustical Society of America and published by . This book was released on 2001 with total page 1264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ichthyology Handbook written by B.G. Kapoor and published by Springer Science & Business Media. This book was released on 2004-03-11 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, progress in fish biology has advanced at an unprecedented rate and has led to many breakthroughs in the field. This book provides a wealth of information on the strategies that fish adopt with respect to waters with markedly different physical and chemical characteristics. It shows how their physiology, behaviour and lifestyles are adapted to exploit particular niches and gives comprehensive insight into fish life under extreme conditions. The readers are introduced to the ways in which fish exemplify many phenomena of general biological interest - the existence of competitors, chaos, and predator-prey interaction. Fish pathology as well as the components of the immune system are addressed. In this book, original and at times controversial views are presented, areas which have so far received inadequate attention are highlighted and avenues for further research are suggested.
Download or read book The Diversity of Fishes written by Gene Helfman and published by John Wiley & Sons. This book was released on 2009-04-03 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of The Diversity of Fishes represents a major revision of the world’s most widely adopted ichthyology textbook. Expanded and updated, the second edition is illustrated throughout with striking color photographs depicting the spectacular evolutionary adaptations of the most ecologically and taxonomically diverse vertebrate group. The text incorporates the latest advances in the biology of fishes, covering taxonomy, anatomy, physiology, biogeography, ecology, and behavior. A new chapter on genetics and molecular ecology of fishes has been added, and conservation is emphasized throughout. Hundreds of new and redrawn illustrations augment readable text, and every chapter has been revised to reflect the discoveries and greater understanding achieved during the past decade. Written by a team of internationally-recognized authorities, the first edition of The Diversity of Fishes was received with enthusiasm and praise, and incorporated into ichthyology and fish biology classes around the globe, at both undergraduate and postgraduate levels. The second edition is a substantial update of an already classic reference and text. Companion resources site This book is accompanied by a resources site: www.wiley.com/go/helfman The site is being constantly updated by the author team and provides: · Related videos selected by the authors · Updates to the book since publication · Instructor resources · A chance to send in feedback
Download or read book Handbook of Fish Biology and Fisheries written by Paul J. B. Hart and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent decades have witnessed strong declines in fish stocks aroundthe globe, amid growing concerns about the impact of fisheries onmarine and freshwater biodiversity. Fisheries biologists andmanagers are therefore increasingly asking about aspects ofecology, behaviour, evolution and biodiversity that weretraditionally studied by people working in very separate fields.This has highlighted the need to work more closely together, inorder to help ensure future success both in management andconservation. The Handbook of Fish Biology and Fisheries has beenwritten by an international team of scientists and practitioners,to provide an overview of the biology of freshwater and marine fishspecies together with the science that supports fisheriesmanagement and conservation. This volume, subtitled Fish Biology, reviews a broadvariety of topics from evolutionary relationships and globalbiogeography to physiology, recruitment, life histories, genetics,foraging behaviour, reproductive behaviour and community ecology.The second volume, subtitled Fisheries, uses much of thisinformation in a wide-ranging review of fisheries biology,including methods of capture, marketing, economics, stockassessment, forecasting, ecosystem impacts and conservation. Together, these books present the state of the art in ourunderstanding of fish biology and fisheries and will serve asvaluable references for undergraduates and graduates looking for acomprehensive source on a wide variety of topics in fisheriesscience. They will also be useful to researchers who needup-to-date reviews of topics that impinge on their fields, anddecision makers who need to appreciate the scientific backgroundfor management and conservation of aquatic ecosystems. To order volume I, go to the box in the top right hand corner.Alternatively to order volume II, go to:http://www.blackwellpublishing.com/book.asp?ref=063206482X or toorder the 2 volume set, go to:http://www.blackwellpublishing.com/book.asp?ref=0632064838. Provides a unique overview of the study of fish biology andecology, and the assessment and management of fish populations andecosystems. The first volume concentrates on aspects of fish biology andecology, both at the individual and population levels, whilst thesecond volume addresses the assessment and management of fishpopulations and ecosystems. Written by an international team of expert scientists andpractitioners. An invaluable reference tool for both students, researchers andpractitioners working in the fields of fish biology andfisheries.
Download or read book Proceedings Mar 31 Apr 2 1970 Airlie House Conference Center Warrenton Va written by G. Brooke Farquhar and published by . This book was released on 1971 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synopsis of Biological Data on the Chub Mackerel Scomber Japonicus Houttuyn 1782 written by José J. Castro Hernández and published by Food & Agriculture Org.. This book was released on 2000 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chub or Spanish mackerel (Scomber japonicus) is a very important species in commercial and artisanal fisheries throughout the world. This synopsis brings together quantitative and qualitative information on various aspects of the mackerel's biology, ecology, stocks and utilisation, to improve knowledge of the species and help maintain it as an important food resource.
