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Books > Science & Mathematics > Biology, life sciences > Hydrobiology
Dinoflagellates are fascinating protists, mostly unicellular, distributed in environments ranging from the polar to tropical seas, hypersaline, coastal, estuarine and oceanic waters. There are about 2,377 dinoflagellate species recognized. They exhibit a great diversity of shape, size, biochemical composition and physiological characteristics. Generally free floating, dinoflagellates are photosynthetic, a few species such as the Symbodinium are symbiotic, living in corals, while a few are parasitic. This volume presents a discussion on dinoflagellate phylogeny based on recent developments in molecular biology. It provides insights into the similarity of pigment composition with other microalgae. A comprehensive coverage of their carbon assimilation rates is presented, which appear to be low compared to other microalgae. Besides photosynthetic assimilation, an interesting aspect of acquiring carbon is through mixotrophy which appears to be wide spread amongst dinoflagellates and a thorough discussion is presented. Key features of this book include recent methods of culturing dinoflagellates, which can serve as analogues of their blooms in understanding their physiology, biochemistry and production of phycotoxins. This book, based on massive data collected over decades of research, provides an informative overview on the spatial and temporal distribution and dispersal of dinoflagellates by ocean currents, ballast water introductions and climate changes. About 70 species of dinoflagellates are implicated in the production of ephemeral harmful algal blooms (HABs), which are on the increase globally. Based on several case studies, a comprehensive coverage of the phycotoxins produced by HAB species (PSP, DSP, ASP, Ciguatera, NSP) is presented. The adverse effects of phycotoxins on human health, and the loss of revenues ($50 million in the USA) due to fish kills are evaluated. Latest advances in the methodology of genomics are presented with a view to highlight their importance and to understand their linkage with phycotoxin production. A discussion of remediation measures to manage HABs is presented, which would be highly useful in aquaculture operations. This book provides a large number of illustrations, microphotographs and color photographs. It is ideal for any audience requiring an in-depth exposure to current issues, ideas and methods used in dinoflagellate studies. The topics discussed serve as a useful reference to researchers, scientists, environmental managers, undergraduate and graduate students.
Lobsters are marine decapod crustaceans belonging to a diverse array of taxa, many of which support major fisheries of great socioeconomic importance to human communities and play important roles in natural ecosystems. This book contains chapters describing studies of the larval biology, behavior and habitat preferences, and fisheries management of fished clawed and spiny lobster species. Chapter 1 attempted to use a model based on enzyme thermodynamics to estimate and compare the lower and upper threshold temperatures and intrinsic optimum temperature for the development of American lobster larvae. Chapter 2 used an inferential ecomorphological approach incorporating information on the morphology, life history, biotope, and behavior of a selection of 11 decapod species present in European waters to predict the likely natural habitat of small juvenile European lobsters, a critical life stage about which, remarkably, little is known. Chapter 3 used simulation modeling to estimate the impacts of different fisheries harvesting strategies on the catches and socioeconomic values of Caribbean spiny lobster fisheries in different nations, illustrating their sensitivity to heterogeneous fisheries management. These chapters demonstrate new approaches to the study of lobsters that can contribute important information on their biology and fisheries ecology for use in forecasting the potential impacts of changes in climate and fisheries management on their populations and the fisheries they support.
At present, two native lamprey species occur in the Czech Republic, namely the brook lamprey and the Ukrainian lamprey. Lampreys: Evolution, Distribution and Use in Research begins by summarizing the available knowledge about the biology, ecology, distribution, monitoring of occurrence and action plans/recovery programmes for the aforementioned species. Following this, the occurrence of lampreys of the genus Lethenteron in 19 rivers and one lake in Sakhalin Island is documented, and sex differences in adults in respect to morphometric parameters are also presented. Mammalian blood clotting is presented as an extremely complex phenomenon involving more than two dozen proteins interacting in a series of limited proteolytic events partitioned into two calcium-dependent pathways. Some clotting proteins in mammals are present in only trace amounts, and proving their absence or presence in lampreys was not possible until the era of whole genome sequencing. As such, the authors retrace this development from a personal standpoint.
A biomarker is a biochemical, cellular, physiological or behavioral variation that can be measured in tissue or body fluid samples or at the level of whole organisms that provides evidence of exposure to and/or effects of one or more chemical pollutants or radiations. Based on the facts related to the existence of contaminant stressors, an understanding of chemical modes of toxicity can be incorporated with diagnostic markers of aquatic animal physiology to help understand the health status of aquatic organisms in the field. New approaches in functional genomics and bioinformatics can help discriminate individual chemicals, or groups of chemicals among complex mixtures that may contribute to adverse biological effects. By using these recent methodologies, it could be useful to shed light on the molecular evolution of the biomarkers, and which role and functionality can be better understood based on exploring the relative evolution pathways in several aquatic organisms. PhD students and scientists with interests on physiology, ecotoxicology, biochemistry, molecular biology, molecular evolution and aquatic science disciplines will find this book very useful, based on the concepts and the relative biomarkers study cases, analyzed from the evolutionary point of view.
The Zoological Guide to Crustacea opens by providing an update on the cave crustacean decapods from Mexico, because in the last thirty years several species have been described. Mexico has diverse cave environments according to cave origin, such as: karstic caves, volcano caves with freshwater habitats and anchialine caves with marine and brackish habitats. The following study focuses on a total of 2,700 Artemia franciscana collected at the Al Wathba Reserve between December 2017 and May 2018, which were examined for the presence of larval helminths by direct microscopy of glycerin mounted specimens. Of these, 341 (= 12.6%) specimens contained different species of the Hymenopepididae and Progynotaeniidae families. The penultimate study investigates whether the non-marine ostracod Heterocypris incongruens can detect and react to chemical compounds derived from a predator and from injured conspecifics. The closing study demonstrates the diversity of larval phases and their importance to lobster populations and fisheries, and provides a summary of larval developmental patterns and behaviors and their potential impacts on larval dispersal and lobster demographic connectivity.
The authors begin this compilation by analyzing catalase and peroxidase enzymes in different Black Sea teleosts related to their taxonomic, physiological and ecological position and evaluation of the anthropogenic impact on these antioxidant enzymes in fish tissues. The complex of specific phylogenic, physiological and ecological features of fish species may modify their antioxidant status, and it is important to understand for the development of monitoring programs. Next, the ratio of constitutive and reparative neurogenesis in the pallium of the juvenile masu salmon, Oncorhynchus masou, is analyzed. Since salmonid juveniles are characterized by a high level of constitutive neurogenesis, the authors investigated proliferative activity and neurodifferentiation in the dorsal pallial area of the masu salmon juvenile. The study has allowed for indentification of the superficially located periventricular proliferative zone, which corresponds to the pallial periventricular zone of other fish species. The objective of the final chapter was to study proliferation processes and the role of radial glia and neural stem cells in the event of injurious action on cerebellum of masu salmon juveniles. Using the immunoperoxidase staining of the glial fibrillary acidic protein, doublecortine and proliferating cells nuclear antigen, processes of proliferation and gliogenesis after mechanical trauma of cerebellum of masu salmon juveniles were studied.
In this compilation, the authors examine a plant dealing with mussel shell waste as input in its valorisation process, which is considered a priori an eco-friendly solution to the disposal of these products. Conversely, as a result of the thermal treatment of the shell waste, odour emissions to the atmosphere are a significant issue. Therefore, the authors seek to identify pollution sources and solutions. Following this, the book reports on different methodologies for the identification of emerging metals pollutants, together with all toxic metals, in mussels, clams and oysters. The possibility of human consumption, among other things, makes this identification necessary prior to their being sold in the market. In a separate study, the authors analysed oxidative stress in relation to the impact of global climate change on bivalves through the study of the organisms responses to mitigate damage and control the generation of reactive oxygen species. Through this, the book expands our understanding of multifactorial effects on the marine ecosystem, providing insight into the acclimation, adaptive and stress response processes of bivalves. In order to compare oxidative stress conditions in bivalves obtained from both sites, the authors also evaluated the production of ROS and oxidative stress biomarkers in hemocytes from the A. atra atra during the month of September of 2015. Based on the results, it can be concluded that hemocytes from the ribbed mussel A. atra atra may be used as a model to evaluate oxidative stress induced by pollutants or other environmental stressors. Later, the level of lipid oxidation and non-enzymatic antioxidants content in Mytilus edulis chilensis for commercialization is evaluated, after the treatment with ascorbic acid. The results showed the generation of oxidative stress in mussels during dry condition. In the concluding chapter, the role of several mussel species in environmental monitoring programs, with emphasis on metal contamination, including metal bioaccumulation potential and biomarker investigations. Additonally, the fact that these organisms may be an important contaminant transfer link to the human population and pose important public health risks will also be discussed.
In Chapter One, Carlos Garcia, Javiera Oyaneder-Terrazas, Diego Figueroa, Carolina Diaz, Romina Mora, and Hector R Contreras examine events linked to lipophilic marine biotoxins (OA-, AZA-, PTX- and YTX-group) and the way they interrelate in the mussels sp. environment in the Austral Pacific fjords. In Chapter Two, Uriel Rubio Rodriguez, Jessica A Navarro Gonzalez, and M Itzigueri Burgos Vazquez explore the anatomical adaptations allowing for gregarious behaviour in schools of fish to suggest modifying capturing methods for fisheries. In Chapter Three, Carlos Garcia, Javiera Oyaneder-Terrazas, and Hector R. Contreras provide a study lipophilic marine biotoxins in the environment and their connection to concentration levels in shellfish. Marcos I. Perez-Perez, M. Dolores Garza-Gil, and Manuel Varela-Lafuente examine Spanish turbot aquaculture beginning in 1983 and ending with the future challenges it will face in Chapter Four. In Chapter Five, Yulia I. Podlipaeva and Andrew V Goodkov present a study on White Sea mussel adaptions to environmental salinity changes. Next, H Y Zhanga, P K S Shina, and S G Cheung present a study on the effect of salinity and acidification on food detection in Nassarius festivus, a marine gastropod, in Chapter Six. In Chapter Seven, J A Grant-Mackie reviews the distribution of a nautiloid in the Late Triassic. Following this, Bi Lin Liu, Xin Jun Chen, Jian Hua Li, Yi Gong, and Jing Yuan Lin present a review on the jumbo flying squid, or Dosidicus gigas, in Chapter Eight. Lastly, Chapter Nine by Bi Lin Liu, Jing Yuan Lin, Xin Jun Chen, Tao Jia, and Gang Li examines the species composition, abundance, and spatial distribution of zooplankton through a study conducted with Chinese squid jigging vessels in the Pacific Ocean.
Thema des vorliegenden Buches ist der Umgang mit dem Wasser an der niedersachsischen Kuste (hier: die Entwasserung der niedrig liegenden Landschaft), eine fundamentale Angelegenheit fur die Menschen, die hier leben und arbeiten. Fur ein junges Zielpublikum wird unterhaltsam erlautert, wohin das Wasser fliesst und welche Anstrengungen unsere Vorfahren unternommen hatten, damit wir in dieser Landschaft (uber)leben koennen. Daruber hinaus werden Veranderungen, die z. B. uber den Klimawandel auf diese Landschaft einwirken, in die Entdeckungsreise der vier Protagonisten eingebunden.
Providing a comprehensive account of marine conservation, this book examines human use and abuse of the world's seas and oceans and their marine life, and the various approaches to management and conservation. Healthy marine ecosystems - the goods and services that they provide - are of vital importance to human wellbeing. There is a pressing need for a global synthesis of marine conservation issues and approaches. This book covers conservation issues pertinent to major groups of marine organisms, such as sharks, marine turtles, seabirds and marine mammals; key habitats, from estuaries, wetlands and coral reefs to the deep sea; and from local and regional to international initiatives in marine conservation. An ideal resource for students, researchers and conservation professionals, the book pays appropriate attention to the underlying marine biology and oceanography and how human activities impact marine ecosystems, enabling the reader to fully understand the context of conservation action and its rationale.
"Advances in Marine Biology" presents original research results on the leading edge of marine biology discovery. Each article has been carefully selected in an attempt to present substantial research results across a broad spectrum. In this volume, the first chapter reviews the influenza viruses in marine mammals. Chapter Two presents an overview of the development and study of marine sponges bioactive compounds for anti-inflammatory activity for the last four years (2012-2016). Chapter Three provides an updated review of the helminth fauna of cetaceans. Chapter Four discusses the effect of clays on the removal of okadaic acid from seawater. Chapter Five focuses on biomarker responses in black sea scorpian fish Scorpaena porcus to anthropogenic impact. Chapter Six provides an overview of trophic ecology of the shortfin mako Isurus oxyrinchus (Lamniformes: Lamnidae) in the Eastern Pacific ocean. Chapter Seven examines a fishery encompassing two of the Spanish fleets target species that exhibit a significant ecological predatory interdependence: the blue whiting and the southern stock of European hake.
The University of Florida has an ambitious goal: to harness the power of its faculty, staff, students, and alumni to solve some of society's most pressing problems and to become a resource for the state of Florida, the nation, and the world. In 1958, a panel funded by the Office of Naval Research initiated the formation of the International Shark Attack File, the first comprehensive documentation of shark attacks on a global and historical level. In 1988, the file was transferred to the Florida Museum of Natural History at the University of Florida. It is part of the Florida Program for Shark Research, directed by George H. Burgess, the planet's expert on shark attacks, and staffed by a world-renowned team of research scientists and educators. Travel the globe with Burgess, the Sherlock Holmes of shark attacks, as he studies mauled remains and the scars of the lucky survivors. His most famous case took him to an idyllic Red Sea resort where panic had set in after five attacks occurred in a single week. The attacks were carried out by Oceanic White Tips and a Mako, deep-water species that had no business being so close to the beach. Following the clues--dive-boat operators feeding sharks by hand to entertain tourists, the disappearance of the yearly tuna catch, and the dead sheep New Zealand cargo companies had been tossing overboard--Burgess solves the mystery of the shark attacks for Egyptian tourism officials and offers a list of best practices. But not all cases end with an easy prescription. In St. Petersburg Beach, Florida, he visits a recent shark-attack victim, bitten just off her dock on Boca Ciega Bay. While the victim would prefer to forget the fateful day the sharp-toothed jaws of the Bull Shark latched onto her leg just below the knee, Burgess gently coaxes the story from her. It will go in the file, to educate other shark researchers and educators and help us better understand the world's most feared predator.
Modern marine turtles belong to an ancient group of reptiles inhabiting the Earth for over 110 million years, since the Cretaceous. Marine turtles depend on both marine and terrestrial habitats for their growth and development, from high energy beaches to benthic reefs, and the open waters of the seas. All seven species of sea turtles are listed on the International Union for Conservation of Nature (IUCN) Red List of Threatened Animals (IUCN 2011). The threats facing sea turtles are many, both on land and at sea, including habitat loss, predation, and human exploitation. This book examines the ecology, behavior and conservation efforts of sea turtles.
This is a contribution to the conservation of members of the family Cambaridae. This book is focused on the evaluation of geographic changes caused by landscape scale and land use change that has impacted the ecology of North American crayfish species. The book includes chapters on geographic distributions, conservation strategies, and effects of contaminants on crayfish structure and function. Contributors include a variety of students associated with the Editor, as well as original contributions from the Editor's colleagues. From the conceptual frameworks to the case studies, Geographic Distribution, Ecological Impact, and Conservation Strategies for North American Crayfish will provide important considerations to assist in the conservation and protection of crayfish, with emphasis on stressors and actions necessary to protect and restore crayfish habitats and populations. This book is necessary for environmental and natural resource managers, researchers, and governmental agencies tasked with the protection, restoration, and management of wildlife populations.
Resources tailored to the Cambridge International AS & A Level Marine Science syllabus (9693), for first examination in 2017. Cambridge International AS and A Level Marine Science Coursebook is tailored to the Marine Science syllabus (9693) for first examination in 2017, and is endorsed for full syllabus coverage by Cambridge International Examinations. The coursebook includes exercises to develop scientific skills such as problem-solving and handling information; practical activities to help students develop investigative skills; and international case studies to illustrate phenomena in real-world situations. Exam-style questions and self-assessment questions are provided to encourage students to track their understanding. Students can also develop their maths skills in science contexts. Answers to questions are found at the back of the book.
In diesem Buch berichten 95 Wissenschaftlerinnen und Wissenschaftler uber ihre Forschung im Ozean und an den Kusten. Sie fuhren den Leser von den eisbedeckten Polarmeeren uber die Nord- und Ostsee bis zu den Seegraswiesen, tropischen Mangroven und Korallenriffen. Die Beitrage veranschaulichen die Vielfalt der Lebensgemeinschaften zwischen Strand und Tiefsee. Das Groessenspektrum der Organismen reicht von Walen und Fischen uber Planktonkrebse und Muscheln bis zu Kieselalgen und Bakterien. Die globalen - vom Leben im Meer bestimmten - Stoffkreislaufe werden ebenso behandelt wie die molekularbiologischen Anpassungen der Mikroorganismen, und hier sind auch die groessten methodischen Fortschritte zu verzeichnen. Zu den spannenden Themen der angewandten Meeresforschung gehoeren die UEberfischung und die nachhaltige Nutzung der Meere, die Gefahrdung durch Schad- und Nahrstoffeintrage, das Einschleppen fremder Organismen und die Zerstoerung von Lebensraumen. Vielfaltig und bereits deutlich nachweisbar sind die Einflusse des globalen Klimawandels auf das Leben im Meer. Forschungsschiffe, Unterwasser-Roboter, Gensonden und Datenbanken, aber auch mathematische Modelle und naturnahe Experimente sind wichtige Werkzeuge der Meeresbiologen. Exkurse uber die Geschichte und Struktur der meeresbiologischen Forschung in Deutschland runden die UEbersicht ab. In 48 selbstandigen Beitragen fugt sich die Vielfalt moderner, meeresoekologischer Forschung zu einem faszinierenden Gesamtbild zusammen. Das Buch richtet sich an Lehrende und Lernende und an alle, die sich fur das Meer und seine Bewohner, fur modernes Ressourcenmanagement und marinen Naturschutz interessieren. vbiehivjoe
Killer tales from an award-winning cinematographer and marine biologist. Marine biologist and underwater cameraman Richard 'Shark Tracker' Fitzpatrick wrangles sharks and other deadly marine creatures for a living. From the coral gardens of the Great Barrier Reef to the murky depths of the Amazon, Fitzpatrick shares his real-life experiences with predators of the deep - from sharks and box jellyfish to sea snakes. A mixture of mind-boggling anecdotes and science provide an intimate insight into marine life and the conservation issues at stake.
Aquatic invasive species -- harmful, non-native plants, animals, and microorganisms living in aquatic habitats -- damage ecosystems or threaten commercial, agricultural, and recreational activities. The Nonindigenous Aquatic Nuisance Prevention and Control Act of 1990 created the Task Force and required it to develop an aquatic nuisance species program. The Water Resources Reform and Development Act of 2014 includes a provision that the United States Government Accountability Office (GAO) assess federal costs of, and spending on, aquatic invasive species. This book examines how much Task Force member agencies expended addressing aquatic invasive species for fiscal years 2012-2014; activities conducted by Task Force member agencies and challenges in addressing aquatic invasive species; and the extent to which the Task Force has measured progress in achieving the goals of its 2013-2017 strategic plan.
This book provides current research on the ecosystems of coral reefs, as well as the environmental impact and current threats to the coral reefs. Chapter One studies proteins responsive to variable temperature exposure in the reef-building coral Seriatopora hystrix. Chapters Two and Three examine the impact of arachidonic acid's (ArA) on coral reefs. The final chapter discusses environmental monitoring in the Gulf of Thailand, and the use of coral skeletons as metal pollution recorders.
The fishery products and bivalve mollusks sector is certainly one of the most complex in term of sanitary and commercial topics, considering the high number of species that require a precise identification. For all these reasons, the knowledge and the skills in this field remain prerogative of a few experts on the subject and operators who, in time and for various reasons, have acquired specific knowledge and skills. On the other hand, the evolution of community legislation, and especially the growing worldwide interest for fishery products and bivalve mollusks, requires a common system of traceability and labeling aimed at increasing the transparency in commercial transactions, facilitating the identification of the fish and mollusks species and increasing consumer confidence. In this perspective, the proposed publication stands as an easy reference tool intended for all the stakeholders involved in the Mediterranean seafood chain, and in which some essential elements of the community rules relating to inspection and control of fishery products and bivalve mollusks are revealed. The presence of illustrations will represent a quick and easy way to acquire the essential information to identify the main Mediterranean fishery products and bivalve mollusks of commercial interest.
Among all the large whales on Earth, the most unusual and least studied is the narwhal, the northernmost whale on the planet and the one most threatened by global warming. Narwhals thrive in the fjords and inlets of northern Canada and Greenland. These elusive whales, whose long tusks were the stuff of medieval European myths and Inuit legends, are uniquely adapted to the Arctic ecosystem and are able to dive below thick sheets of ice to depths of up to 1,500 meters in search of their prey-halibut, cod, and squid. Join Todd McLeish as he travels high above the Arctic circle to meet: Teams of scientific researchers studying the narwhal's life cycle and the mysteries of its tusk Inuit storytellers and hunters Animals that share the narwhals' habitat: walruses, polar bears, bowhead and beluga whales, ivory gulls, and two kinds of seals McLeish consults logbooks kept by whalers and explorers and interviews folklorists and historians to tease out the relationship between the real narwhal and the mythical unicorn. In Colorado, he visits climatologists studying changes in the seasonal cycles of the Arctic ice. From a history of the trade in narwhal tusks to descriptions of narwhals' vocalizations as heard through hydrophones, Narwhals reveals the beauty and thrill of the narwhal and its habitat, and the threat it faces from a rapidly changing world. Watch the trailer: http://www.youtube.com/watch?v=gHwaqdKyLCQ&list=UUge4MONgLFncQ1w1C_BnHcw&index=9&feature=plcp
The diversity, quantity and vitality of fish life in the seas that bathe the Galapagos archipelago is every bit as dramatic as the exotic wildlife above! It is completely updated with many new photos added. It is a much improved identification book for one of the world's natural underwater wonders. If you are even thinking of diving the Galapagos this beautiful, comprehensive fish identification guide is a must.
This book aims to report possible applications of seaweeds in agriculture as well as the composing ingredients of nutritional value and therapeutic properties against oxidative stress. The information set provided in this book comes from very recent scientific results obtained by research groups of several countries. This information set is useful not solely for the academic community (undergraduate or graduate students, staff and faculty personnel), but also to those individuals involved somewhat with the agricultural, commercial and medical business of seaweeds. The contributing authors are renowned scientific leaders in the field. This feature associated with the new type of information provided in this book contributes significantly to the high-quality of this publication.
The number of proliferation zones in the adult brain is strongly reduced in the transition between fish and tetrapods and even more in mammals compared to non-mammalian vertebrates. While the adult mammalian brain generally contains only two neurogenic areas, the adult teleost brain displays numerous proliferative niches. This book discusses the entire neurogenesis, the sexual reproduction of teleosts and touches base on the occurrence and possible role of heat shock protein 70 in the developing sea bass Dicentrarchus labrax (L.). The cytokine receptor signaling in teleosts are critical mediators of cell-cell communication throughout the life cycle. Over recent years, much has been learned about the cytokine receptor repertoire in teleosts and this book explains how they are utilised. Other topics the authors of this book presented are the central nervous system of the teleosts, their thermoregulatory behaviour, the lipid peroxidation in teleosts, and finally, the molecular evolution and environmental acclimation of fish skeletal muscle tropomyosin. |
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