Download or read book Potential for Predation by Fishes to Impact Zebra Mussels Dreissena Polymorpha Insight from Bioenergetics Models written by and published by . This book was released on 2003 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioenergetic modeling provided insight into the potential for fishes to impact zebra mussel Dreissena polymorpha populations by predation across river and lake systems in eastern North America (13 deg latitude x 12 deg longitude). Food consumption modeling suggested that fishes in southern latitudes consumed up to 100 percent more food than those in northern systems. Much variation in food consumption was the result of differing water temperature regimes, which presumably dictated the bioenergetic demands of fishes. The potential for fishes to impact zebra mussels was also influenced by the standing crop of different species and the fish community as a whole. Fish community structures followed predictable patterns along both longitudinal and latitudinal gradients. Multivariate analyses indicated a tendency for central and southern U.S. systems to contain greater standing crops or biomasses of fishes likely to consume zebra mussels. Though analyses indicated northern systems had greater biomasses of some potential zebra mussel predators, net biomass increases of these species was not great enough to offset the decreases in food consumption due to cooler annual water temperatures. This study generally supports the premise that fishes in more southern (including central) U.S. waters have inherently greater potential to impact zebra mussels because of community composition and bioenergetics. Our simulations provide a partial explanation of why zebra mussel invasions have not been as rapid and widespread in southern U.S. waters compared to the Great Lakes region.

Download or read book The Impacts of Fish Predation on Zebra Mussel Dreissena Polymorpha Population Densities written by Sandra M. Keppner and published by . This book was released on 1996 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quagga and Zebra Mussels written by Thomas F. Nalepa and published by CRC Press. This book was released on 2013-10-25 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction and rapid spread of two Eurasian mussel species, Dreissena polymorpha (zebra mussel) and Dreissena rostriformis bugensis (quagga mussel), in waters of North America has caused great concern among industrial and recreational water users. These invasive species can create substantial problems for raw water users such as water treatment facilities and power plants, and they can have other negative impacts by altering aquatic environments. In the 20 years since the first edition of this book was published, zebra mussels have continued to spread, and quagga mussels have become the greater threat in the Great Lakes, in deep regions of large lakes, and in the southwestern Unites States. Quagga mussels have also expanded greatly in eastern and western Europe since the first book edition was published. Quagga and Zebra Mussels: Biology, Impacts, and Control, Second Edition provides a broad view of the zebra/quagga mussel issue, offering a historic perspective and up-to-date information on mussel research. Comprising 48 chapters, this second edition includes reviews of mussel morphology, physiology, and behavior. It details mussel distribution and spread in Europe and across North America, and examines policy and regulatory responses, management strategies, and mitigation efforts. In addition, this book provides extensive coverage of the impact of invasive mussel species on freshwater ecosystems, including effects on water clarity, phytoplankton, water quality, food web changes, and consequences to other aquatic fauna. It also reviews and offers new insights on how zebra and quagga mussels respond and adapt to varying environmental conditions. This new edition includes seven video clips that complement chapter text and, through visual documentation, provide a greater understanding of mussel behavior and distribution.

Download or read book Zebra Mussels Biology Impacts and Control written by Thomas F. Nalepa and published by CRC Press. This book was released on 1992-11-24 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction and rapid spread of the zebra mussel in North American waters has caused great concern among industrial and recreational users of these waters. This bivalve mollusk is a biofouler that attaches to any firm substrate (e.g. rocks, piers, water intake pipes, boat hulls) and has already created significant problems for raw water users such as water treatment plants and power plants. Zebra Mussels: Biology, Impacts and Control provides essential information regarding the biology of the zebra mussel in North America and Europe, presents case studies of environmental and industrial impacts, and outlines control strategies. Summary articles detail its life history, origins, and morphology. The book also examines techniques used to culture and maintain this organism in the laboratory. Thirty-two color plates illustrate some of the dramatic problems created by the explosive population growth of this species. Zebra Mussels: Biology, Impacts, and Control is an important resource for ecologists, conservationists, environmental consultants, water quality engineers, regulatory officials, power utilities, and libraries.

Download or read book Biology and Potential Impacts of Zebra Mussels in Large Rivers written by James E. Alexander and published by American Water Works Association. This book was released on 1997 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Hudson River Estuary written by Jeffrey S. Levinton and published by Cambridge University Press. This book was released on 2006-01-09 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hudson River Estuary, first published in 2006, is a scientific biography with relevance to similar natural systems.

Download or read book Biology and Management of Invasive Quagga and Zebra Mussels in the Western United States written by Wai Hing Wong and published by CRC Press. This book was released on 2015-05-07 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biology and Management of Invasive Quagga and Zebra Mussels in the Western United States is a synthesis of the biology and management of invasive mussels from scientists and managers working on invasive quagga and zebra mussels in the western United States. Invasive dreissenid mussels have spread throughout southwestern United States at unprecedent

Download or read book Potential Impacts of Zebra Mussel Invasion on Gamefish Health and Prey Availability in Prairie Lakes written by Caroline Barbara Ofosu and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Invasive species are a threat to global aquatic ecosystems. Nonetheless, their impacts can be heterogeneous across systems. Recent reports suggest Saskatchewan (SK) prairie lakes are highly prone to zebra and quagga mussels (ZQM) given their proximity to invasive corridors of Manitoba and three US states (Montana, North Dakota, and Minnesota) where they have been reported. As the effect of ZQM on native species is variable and context-dependent across locations and time, an understanding of prevailing biological, physical and chemical conditions supporting various cohorts of fish communities is necessary for prioritizing mitigation efforts to address the potential effects of these dreissenids in uninvaded systems. To gain these important insights, I investigated diet composition and body conditions of three ecologically and recreationally important gamefishes; walleye (Sander vitreus), northern pike (Esox lucius), and yellow perch (Perca flavescens) sampled from 18 SK prairie lakes. In addition, I assessed the impact of fish size and environmental variables on gamefish body conditions. Twenty-three prey taxa were found in the diets of these fishes. While both invertebrates (amphipods) and fish formed significant constituents of walleye diets, pike concentrated more on fish prey, whereas perch relied more on invertebrates (chironomids and amphipods). Zooplankton was only a minor contributor to the diets of all three gamefish species. Body conditions of walleye and pike decreased with size, but yellow perch populations were in consistently good condition across all size groups. These results suggest preferred fish prey of larger piscivores (i.e., pike and walleye) may be present in insufficient quantity. Lake productivity and alkalinity influenced body conditions of large-sized walleye and yellow perch. The scarcity of pelagic zooplankton prey in the diets of small-sized gamefishes implies these populations may be less threatened by future ZQM invasion than previously assumed. Next, I contrasted stomach content data and Carbon (C), Nitrogen (N), with Sulfur (S) stable isotope analyses to better quantify the relative importance of various foraging habitats to the three gamefish species. Bayesian Mixing models predicted that in about 70% of our study lakes > 55% of gamefish diets were sourced from the littoral region, whereas in ~30% of surveyed lakes, > 55% of gamefishes diets was sourced from the pelagic habitat. General evidence of similar reliance on sediment S sources in lakes where two species co-occurred (walleye and pike or walleye and perch) was observed. Overall, the three predominant gamefishes exhibited comparable dependence on the three feeding habitats (littoral, pelagic, sediment) across SK prairie lakes. Findings of stomach content analysis (SCA) and stable isotope analysis (SIA) were assessed to determine how the two techniques corroborate, contradict or complement each other. Results indicated a lack of correspondence between the two methods utilized in examining walleye diets, suggesting the need to use both techniques as complements for more robust results. Finally, because future invasion by ZQM is expected to significantly impact energy sources of gamefishes, I examined the current environmental controls of reliance on pelagic, littoral, and sediment-based diets. Walleye reliance on pelagic energy sources increased with the maximum depth of lakes and decreased with total dissolved solids (TDS) concentrations, implying the contribution of pelagic diets increase for fish populations in deeper and less saline lakes. However, sediment-based diets were not influenced by any of the selected environmental parameters. Integrating SCA and SIA overall helped to advance our understanding of feeding habits of gamefish populations in SK prairie lakes and demonstrates the value of combining these analyses for a comprehensive understanding of feeding interactions within aquatic ecosystems.

Download or read book Annual Report written by Mississippi State University. Forest and Wildlife Research Center and published by . This book was released on 2004 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecology of the Zebra Mussel Dreissena Polymorpha with Reference to Algal Toxins written by Guillaume Juhel and published by . This book was released on 2006 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study focuses on the ecotoxicology of algal toxins and zebra mussels. The zebra mussel is an invasive bivalve that has recently colonized Lough Derg, Co. Tipperary, Ireland. Aspects of the biology of this bivalve were therefore investigated in this lake. The reproductive cycle and population dynamics of this mollusc were studies from September 2000 to October 2001. A full staging method for the study of the reproductive cycle of the zebra mussel was developed and revealed that mussels were spawning in summer and when they attained a length of 6.0 mm. Cohort analysis showed that up to five age classes were present in the population and recruitment period was limited to late summer. The infection of zebra mussels by the ciliate endoparasite Ophryoglena haemophaga, was followed in the same population. Prevalence of infection was maximum in October 2001 and higher in larger mussels. These studies provided the basic understanding of key elements of zebra mussel ecology/physiology to enable the study of the effects algal toxins. The potential impacts of microcystins, the biotoxin produced by the cyanobacterium Microcystis aeruginosa, on the zebra mussel were investigated in a series of laboratory experiments. Behavioural, physiological and ecotoxicological experiments were used to assess the potential sublethal impacts of toxic cyanobacterial cultures on zebra mussels collected in Lough Derg. Feeding trials were videoed and revealed that mussels were producing large quantities of mucous pseudofaeces, {u2018}pseudodiarrhoea{u2019}, through their pedal gape, when exposed to microcystins. This acute irritant response to microcystins was also accompanied by a reduction in the scope of growth of mussels feeding on toxic Microcystis. Toxic cultures of Microcystis aeruginosa were also genotoxic, causing DNA damage in the mussels{u2019} haemocytes. Microcystins also appeared to have an immunomodulatory effect on the zebra mussel. This work therefore provides a great insight in the toxicology of microcystins.

Download or read book A Bioenergetics Model of Zebra Mussel Dreissena Polymorpha Growth in the Great Lakes written by Daniel Schneider and published by . This book was released on 1992 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Feeding Ecology of Fish written by Shelby D. Gerking and published by Elsevier. This book was released on 2014-04-25 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Feeding Ecology of Fish establishes a comprehensive framework for the variable ecological patterns exemplified by feeding fishes. The author, a former president of the American Fisheries Society, devotes special attention to synthesizing empirical studies in categorizing feeding patterns. This book shows how remarkably adaptable fish can be with regard to selecting food, often from trophic levels not usually occupied. Relying on a thorough literature survey, Feeding Ecology of Fish will be an invaluable reference for both fishery scientists and ecological theorists. Organization by trophic level Emphasis on empirical studies Broad coverage of a diverse field

Download or read book Trophic Models of Aquatic Ecosystems written by Villy Christensen and published by WorldFish. This book was released on 1993 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecology and Classification of North American Freshwater Invertebrates written by James H. Thorp and published by Academic Press. This book was released on 2010 with total page 1036 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The third edition of Ecology and Classification of North American Freshwater Invertebrates continues the tradition of in-depth coverage of the biology, ecology, phylogeny, and identification of freshwater invertebrates from the USA and Canada. This text serves as an authoritative single source for a broad coverage of the anatomy, physiology, ecology, and phylogeny of all major groups of invertebrates in inland waters of North America, north of Mexico." --Book Jacket.

Download or read book Aquatic Sciences and Fisheries Abstracts written by and published by . This book was released on 1995 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Harmful Algal Blooms written by Sandra E. Shumway and published by John Wiley & Sons. This book was released on 2018-08-06 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Harmful Algal Blooms: A Compendium Desk Reference erläutert die Grundlagen der schädlichen Algenblüte (HAB) und bietet die notwendigen technischen Informationen, wenn es um unerwartete oder unbekannte schädliche Ereignisse in Zusammenhang mit Algen geht. Dieses Fachbuch behandelt die Gründe für die schädliche Algenblüte, erfolgreiche Management- und Monitoring-Programme, Kontroll-, Präventions- und Minderungsstrategien, die wirtschaftlichen Folgen, Gesundheitsrisiken sowie die Folgen für die Nahrungskette und Ökosysteme. Darüber hinaus bietet es ausführliche Informationen zu den häufigsten HAB-Arten. Harmful Algal Blooms: A Compendium Desk Reference ist ein unschätzbares Referenzwerk für Manager, Einsteiger in das Fachgebiet, Praktiker mit eingeschränkten Zugang zu wissenschaftlicher Literatur und alle, die schnell Zugriff auf Informationen benötigen, insbesondere vor dem Hintergrund neuartiger oder unerwarteter HAB-Ereignisse. Die drei Herausgeber gehören zu den weltweit führenden Forschern auf dem Fachgebiet. Führende Experten haben ebenfalls zu diesem Fachbuch beigetragen, das sich zu einem wichtigen Referenzwerk des Fachgebiets entwickeln wird, zumal das Thema immer mehr an Bedeutung gewinnt.

Download or read book The Invasive Lionfish written by Harris A. Sullivan and published by Nova Science Publishers. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Venomous Indo-Pacific lionfish (Pterois miles and P volitans) are now established along the Southeast U.S.A. and parts of the Caribbean and pose a serious threat to reef fish communities of these regions. Lionfish are likely to invade the Gulf of Mexico and potentially South America in the near future. Introductions of lionfish were noted since the 1980s along south Florida and by 2000 lionfish were established off the coast of North Carolina. Lionfish are now one of the more numerous predatory reef fishes at some locations off the Southeast U.S.A. and Caribbean. Lionfish are largely piscivores that feed occasionally on economically important reef fishes. The trophic impacts of lionfish could alter the structure of native reef fish communities and potentially hamper stock rebuilding efforts of the Snapper-Grouper Complex. Additional effects of the lionfish invasion are far-reaching and could increase coral reef ecosystem stress, threaten human health, and ultimately impact the marine aquarium industry. Control strategies for lionfish are needed to mitigate impacts, especially in protected areas. This book provides a general overview of the biology and ecology of lionfish including genetics, taxonomy, reproductive biology, early life history and dispersal, venom defence and predation, and feeding ecology. In addition, alternative management actions for mitigating the negative impacts of lionfish, approaches for reducing the risk of future invasions, and directions for future research are provided.