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A study of the American shad traces its annual migrations and life cycle in both freshwater rivers and the ocean, focusing on those living in the Delaware River and discussing issues related to tidal power and catch-and-release campaigns.
Fish bones in the caves of East Timor reveal that humans have systematically fished the seas for at least 42,000 years. But in recent centuries, our ancient, vital relationship with the oceans has changed faster than the tides. As boats and fishing technology have evolved, traditional fishermen have been challenged both at sea and in the marketplace by large-scale fishing companies whose lower overhead and greater efficiency guarantee lower prices. In Fishing Lessons, Kevin M. Bailey captains a voyage through the deep history and present course of this sea change—a change that has seen species depleted, ecosystems devastated, and artisanal fisheries transformed into a global industry afloat with hundreds of billions of dollars per year. Bailey knows these waters, the artisanal fisheries, and their relationship with larger ocean ecology intimately. In a series of place-based portraits, he shares stories of decline and success as told by those at the ends of the long lines and hand lines, channeling us through the changing dynamics of small-scale fisheries and the sustainability issues they face—both fiscal and ecological. We encounter Paolo Vespoli and his tiny boat, the Giovanni Padre,in the Gulf of Naples; Wenche, a sea Sámi, one of the indigenous fisherwomen of Norway; and many more. From salmon to abalone, the Bay of Fundy to Monterey and the Amazon, Bailey’s catch is no fish tale. It is a global story, casting a net across waters as vast and distinct as Puget Sound and the Chilean coast. Sailing across the world, Bailey explores the fast-shifting current of how we gather food from the sea, what we gain and what we lose with these shifts, and potential solutions for the murky passage ahead.
Aquaculture, Resource Use, and the Environment places aquaculture within the larger context of global population growth, increased demand for sustainable, reliable sources of food, and the responsible use of natural resources. Aquaculture production has grown rapidly in recent decades as over-exploitation and environmental degradation have drastically reduced wild fish stocks. As fish production has increased, questions have persisted about the environmental sustainability of current aquaculture practices. Aquaculture, Resource Use, and the Environment is a timely synthesis and analysis of critical issues facing the continued growth and acceptance of aquaculture practices and products. Chapters look at the past, present, and future demands for food, aquaculture production, and tackle key issues ranging from environmental impacts of aquaculture to practical best management practices in aquaculture production. Providing broad coverage of issues that are essential to the continued development of aquaculture production, Aquaculture, Resource Use, and the Environment will be vital resource for anyone involved in the field of aquaculture.
This volume constitutes the most recent and most comprehensive consideration of the largest family of bony fishes, the Cichlidae. This book offers an integrated perspective of cichlid fishes ranging from conservation of threatened species to management of cichlids as invasive species themselves. Long-standing models of taxonomy and systematics are subjected to the most recent applications and interpretations of molecular evidence and multivariate analyses; and cichlid adaptive radiations at different scales are elucidated. The incredible diversity of endemic cichlid species in African lakes is revisited as possible examples of sympatric speciation and as serious cases for management in complex anthropogenic environments. Extreme hydrology and bathymetry as driver of micro-allopatric speciation is explored in the African riverine hotspot of diversity of the lower Congo River. Dramatic new molecular evidence draws attention to the complex taxonomy and systematics of Neotropical cichlids including the crater lakes of Central America. Molecular genetics, genomics, imaging tools and field study techniques assess the roles of natural, sexual and kin selection in shaping cichlid traits and beyond. The complex behavioral adaptations of cichlids are considered from a number of sub-disciplines including sensory biology, neurobiology, development, and evolutionary ecology. Most importantly, this volume puts forth a wealth of new interpretations, explanatory hypotheses and proposals for practical management and applications that will shape the future for these remarkable fishes in nature as well as their use as models for the study of biology.