Environmental Sex Differentiation in Fish, 

Автор: Pandian, T. J.
Название: Environmental Sex Differentiation in Fish
ISBN: 0367377861 ISBN-13(EAN): 9780367377861
Издательство: Taylor&Francis
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Цена: 65320.00 T
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Описание:

Fish constitute an important natural renewable resource and any reduction in their ability to propagate as a result of human interference may have significant socioeconomic consequences. The negative effect of human activity on sex differentiation and reproductive output in fish is so diverse that it has been difficult to encompass it in a single book. This book serves as the first attempt to do so.

Unlike in mammals, the expression of a host of sex differentiation genes in fish is mostly controlled by environmental factors. Not surprisingly, environmental sex differentiation is ubiquitous in fish. Overexploitation by capture fisheries does not disrupt sex differentiation but crowding in aqua-farms does, by reducing accessibility to food supply.

Some of the man-made chemicals routinely used worldwide mimic endogenous hormones. For example endosulfan, which is widely used in developing countries, disrupts endogenous hormones and feminizes fish. For the first time, this book views endocrine disruption from the point of labile early life and non-labile adult stages. It shows that sex can irreversibly be reversed, when exposed to endocrine disrupting chemicals (EDCs) during early labile stages but reversibly impairs reproductive output on exposure to EDCs during non-labile adult stage. A consequence of climate change, elevated temperature, and declining oxygen and pH levels is that it masculinises genetic female fish.

Fish display a remarkable ability to postpone the labile period. Besides postponement, some primary and tertiary gonochores have two distinct labile periods amenable to temperature and hormonal manipulations. Hermaphrodites have retained the period until the end of the adult stage and are capable of sex change/reversal more than once in both male and female directions.

Автор: Pandian, T. J.
Название: Genetic Sex Differentiation in Fish
ISBN: 1578087996 ISBN-13(EAN): 9781578087990
Издательство: Taylor&Francis
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Цена: 112290.00 T
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Автор: Pandian, T. J.
Название: Endocrine Sex Differentiation in Fish
ISBN: 1466575603 ISBN-13(EAN): 9781466575608
Издательство: Taylor&Francis
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Цена: 112290.00 T
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Автор: World Bank
Название: The Sunken Billions Revisited: Progress and Challenges in Global Marine Fisheries
ISBN: 1464809194 ISBN-13(EAN): 9781464809194
Издательство: Mare Nostrum (Eurospan)
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Цена: 29260.00 T
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Описание: This report updates previous studies that measured in economic terms the extent of biological losses attributable to overfishing globally. The new estimates assess these 'sunken billions' at $83 billion annually. The report further shows that a clear path can lead to the recovery of these considerable losses, including through significant reduction in global fishing overcapacity. A breakdown between regions is also included, showing that the effort needed to achieve this reform will not be felt equally throughout the world.While the cost of such reform will likely be high, the expected benefits include an increase in biomass by a factor of 2.7, increase in annual harvests by 13 percent, and a 30-fold increase in annual net benefits accrued to the fisheries sector (from $3 billion to $86 billion annually). This urgent call for action is reinforced by the impacts of climate change on fish stocks and fisheries worldwide.

Автор: Pereira Leonel, Patricio Joana, Neto Joao Magalhae
Название: Marine Algae: Biodiversity, Taxonomy, Environmental Assessment, and Biotechnology
ISBN: 1466581670 ISBN-13(EAN): 9781466581678
Издательство: Taylor&Francis
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Цена: 178640.00 T
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Описание: This book is divided into three thematic areas. The first covers a revision of the taxonomy of algae, based on the algae portal, as well as the general aspects of biology and the methodologies used in this branch of marine biology. The second subject area focuses on the use of algae in environmental assessment, with an intensive implementation in Western economies and some emerging economies. The third topic is the potential use of algae in various industries including food, pharmaceuticals, cosmetics, agricultural fertilizers, and the emerging biofuels industries.

Автор: Stefan Lovgren, Zeb Hogan
Название: Chasing Giants: In Search of the World`s Largest Freshwater Fish
ISBN: 1647790573 ISBN-13(EAN): 9781647790578
Издательство: Mare Nostrum (Eurospan)
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Цена: 36960.00 T
Наличие на складе: Поставка под заказ.
Описание: Tells the remarkable and troubling stories of the world`s megafish, and the complex cultures and places that depend on them. It`s a story that stretches across the globe, from the most remote locations on Earth into our own backyards, chronicling a race against the clock to find and protect these ancient leviathans before they disappear forever.

Автор: Dar, Gowhar Hamid
Название: Bacterial Fish Diseases
ISBN: 0323856241 ISBN-13(EAN): 9780323856249
Издательство: Elsevier Science
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Цена: 129130.00 T
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Описание: This book examines the ways individuals in the US and Russia consume and construct collective memories of political events via a reestablished Cold War-like narrative in both media systems. The book contextualizes the rebirth of this phenomenon via seven political events involving Russia, examining the contemporary role of conscious media distrust in subconscious psychological processes.

Автор: Carter, Caitr?ona
Название: The Politics of Aquaculture
ISBN: 0367510960 ISBN-13(EAN): 9780367510961
Издательство: Taylor&Francis
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Цена: 44910.00 T
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Описание: This book makes the case for treating the governance of aquaculture in its own right, abandoning polemic discussions of fish farming aquaculture, opening up new ways for debating it.

Автор: Eddy F. Brian, Handy Richard D.
Название: Ecological and Environmental Physiology of Fish
ISBN: 0199540950 ISBN-13(EAN): 9780199540952
Издательство: Oxford Academ
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Цена: 112110.00 T
Наличие на складе: Нет в наличии.
Описание: Fishes have evolved to colonise almost every type of aquatic habitat and today they are a hugely diverse group of over 25,000 species. This book presents a current and comprehensive overview of fish physiology to demonstrate how living fishes function in their environment.

Автор: C. E. Ashbrook, C. Minto, D. Hively, K. Mistry, M. C. Melnychuk, M. Pons, N. Baker, R. Hilborn, Y. Ye
Название: Global Trends in Status and Management of Assessed Stocks: Achieving Sustainable Fisheries Through Effective Management
ISBN: 9251335419 ISBN-13(EAN): 9789251335413
Издательство: Mare Nostrum (Eurospan)
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Цена: 66530.00 T
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Описание: This report provides an overview of the biological status of assessed stocks around the world and relates measures of stock status to the strength of fisheries management. Stock assessment outputs, consisting primarily of time series of abundance and fishing pressure relative to target reference points, were compiled for 548 marine fish and invertebrate stocks in the RAM Legacy Stock Assessment Database.

Among the data summary methods were global and regional mean trends of abundance and fishing pressure relative to target reference points; bivariate plots of relative abundance and fishing pressure; estimates of potential equilibrium yield foregone at current fishing pressure; and proportions of stocks in different biomass status categories. These measures of stock status were summarized at the global level as well as separated by 16 FAO Major Fishing Areas and ocean basin regions for comparison.

The data presented in this report demonstrated that where fisheries management is being intensely applied (i.e. with regulations based on outputs of scientific stock assessments, and where those regulations are enforced), fishing pressure can be maintained within sustainable ranges that provide maximum or near-maximum long-term yield.

Автор: Erik Reardon
Название: Managing the River Commons: Fishing and New England`s Rural Economy
ISBN: 1625345852 ISBN-13(EAN): 9781625345851
Издательство: Mare Nostrum (Eurospan)
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Цена: 83160.00 T
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Описание: As environmentalists work to restore rivers in New England and beyond in the present day, Managing the River Commons offers important lessons about historical conservation efforts that can help guide current campaigns to remove dams and allow anadromous fish to reclaim their waters.

Название: Legislating for an Ecosystem Approach to Fisheries – Revisited: An Update of the 2011 Legal Study on the Ecosystem Approach to Fisheries
ISBN: 9251349339 ISBN-13(EAN): 9789251349335
Издательство: Mare Nostrum (Eurospan)
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Цена: 60060.00 T
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Описание: This report provides updated data and contributes to knowledge on the current global and regional legal frameworks for an ecosystem approach to fisheries. Several non-binding international instruments are examined, such as marking and identification of fishing vessels.