Download or read book A Study of Holding Conditions Feed Ration and Algal Foods for the Captive Care of Freshwater Mussels written by Catherine M. Gatenby and published by . This book was released on 2000 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Freshwater Mussel Propagation for Restoration written by Matthew A. Patterson and published by Cambridge University Press. This book was released on 2018-02-22 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical, step-by-step guide to rearing freshwater mussels, one of the most imperiled groups of animals in the world.

Download or read book Freshwater Bivalve Ecotoxicology written by Jerry L. Farris and published by CRC Press. This book was released on 2006-11-16 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Responding to the growing need for an aggressive yet conservative approach to evaluating mussel populations, Freshwater Bivalve Ecotoxicology provides a collective review of the techniques and approaches for assessing contaminant impact on freshwater ecosystems. The editors incorporate coverage of research topics and management issues from a cross-section of scientists in the field. They explore current advances in general monitoring of population responses to stressors, fundamental concepts of ecotoxicology specific to burrowing bivalves, and useful insights that offer direction and priority for resolving specific problems challenging protection and conservation efforts. This book lays the groundwork with discussions of topics such as impact assessment, toxicokinetics, biomarkers, and pollution tolerance. The authors then explore fundamental concepts surrounding responses measured in freshwater bivalves as a consequence of chemical exposures or accumulated contaminants in target organs or tissues. They highlight the difficulties encountered with the laboratory culture of these organisms for toxicity testing or other controlled experiments, and examine the use of surrogate test organisms to relate sensitivities of response and reduce pressure on already impacted fauna. The book also reviews innovative field research using in situ bivalve toxicity testing, discusses effects-oriented tissue contaminant assessment, and concludes with threefour specific laboratory or combined field/laboratory ecotoxicology studies. A summary of methods from more than 75 laboratory toxicity studies conducted with freshwater mussels, the book provides an overview of a standardized method for conducting water-only acute and chronic laboratory toxicity tests with glochidia juvenile freshwater mussels. It focuses on studies that report measured contaminant treatments, had robust experimental designs, including replication of control and contaminant treatments, and were published in the peer-reviewed literature. The resulting array of viewpoints provides a framework that can be used to establish priorities in the rehabilitation and management of freshwater ecosystems.

Download or read book North American Journal of Aquaculture written by and published by . This book was released on 2007 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Shellfish Research written by and published by . This book was released on 2003 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Food and Feeding in Fresh water Mussels written by Edward Perry Churchill and published by . This book was released on 1924 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molluscan Biodiversity and Conservation written by and published by . This book was released on 2004 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Food and Feeding Habits of Freshwater Mussels written by William Ray Allen and published by . This book was released on 1914 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selective Feeding of Freshwater Mussels written by Katherine Tran and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examined the feeding of three co-occurring freshwater mussel species in the Sydenham River at Florence, ON (a turbid river with over 25 unionid species), under static and ecologically relevant flow conditions. Experiments were designed to examine the change in algal composition (clearance rate and feeding electivity) following a feeding experiment in a recirculating flow chamber and an aerated tank to determine whether co-existing mussels feed selectively and/or partition algal resources. I hypothesized that mussel species found within the same reach of a river would feed differently and/or selectively on different algal taxa at different flow to limit competition for resources and therefore coexist. I found that the clearance rate was higher under flowing conditions across all the mussel species on natural seston from a turbid river. This was also found for specific algal taxa, which were identified using a flow cytometer, where higher feeding was observed on four of the nine algal taxa under flowing conditions. All three mussel species selected for larger particles within a 28-35 m size fraction, while rejecting smaller particles (12-19 m). Jacob's Modified Electivity index was calculated for each specific algal taxon, while mussels did not appear to partition resources by size, there was evidence that different mussel species are capable of selectively feeding on different algal species. This study suggests that the maintenance of mussel diversity within the same river may be facilitated by resource partitioning.

Download or read book Minority Women Doctoral Directory written by and published by . This book was released on 2004 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Food and Feeding Habits of Freshwater Mussels written by William Ray Allen and published by . This book was released on 1914 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlethal Health Assessment of the Freshwater Mussel Elliptio Complanata written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Freshwater mussels are in decline, with over 70% of North American species categorized as endangered, threatened or of special concern. In an effort to create a nonlethal protocol for health evaluation of freshwater mussels we conducted a series of investigations on wild and captive populations of Elliptio complanata. We tested a method for nonlethal hemolymph collection and found no growth or survival effects in 30 sampled animals relative to 30 controls. We surveyed unionid populations from 19 different stream reaches from a rural region of North Carolina to provide a set of baseline ranges for hemolymph composition in healthy populations. These parameters included hemolymph calcium, magnesium, phosphorus, cell count, glucose, aspartate aminotransferase (AST), ammonia and protein. We tested these parameters in a captive population held under relatively uniform conditions and found most stable over time. Delta 15N declined substantially over time in captivity, likely in response to a large change in environmental _15N signatures. We tested health parameters in three groups of Elliptio complanata after three months under low, moderate or high feed conditions. The treatment groups varied in hemolymph glycogen, magnesium, calcium and phosphorus concentrations and in foot tissue _15N and _13C, providing possible indicators of subtle change in nutritional condition. We also transplanted Elliptio complanata from a stream enriched in _15N-N03 to a relatively depleted stream and evaluated the lag time required for mussel nitrogen isotope signatures to reflect new environmental signatures. We found a slow turnover time but relatively little variability compared to water signatures, suggesting that bivalves may be useful indicators of chronic nutrient loading in rivers and streams. We conclude that, with further research, hemolymph can be a valuable and safe tool for assessment of freshwater mussel population and habitat health.

Download or read book Studies of the Biology of Fresh water Mussels written by William Ray Allen and published by . This book was released on 1921 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Freshwater Algae written by Edward G. Bellinger and published by John Wiley & Sons. This book was released on 2011-09-20 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Freshwater Algae: Identification and Use as Bioindicators provides a comprehensive guide to temperate freshwater algae, with additional information on key species in relation to environmental characteristics and implications for aquatic management. The book uniquely combines practical material on techniques and water quality management with basic algal taxonomy and the role of algae as bioindicators. Freshwater Algae: Identification and Use as Bioindicators is divided into two parts. Part I describes techniques for the sampling, measuring and observation of algae and then looks at the role of algae as bioindicators and the implications for aquatic management. Part II provides the identification of major genera and 250 important species. Well illustrated with numerous original illustrations and photographs, this reference work is essential reading for all practitioners and researchers concerned with assessing and managing the aquatic environment.

Download or read book The Ecology of Freshwater Molluscs written by Robert T. Dillon and published by Cambridge University Press. This book was released on 2000-03-09 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: All aspects of the ecology of freshwater molluscs are discussed in this unique volume. Extensively referenced and providing a synthesis of work from the nineteenth century onwards, this book will appeal to professional ecologists, evolutionary biologists and parasitologists interested in these diverse invertebrates.

Download or read book Hatchery Culture of Bivalves written by Michael M. Helm and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2004 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual is a synthesis of current methodologies pertinent to the intensive hatchery culture of bivalve molluscs. It encompasses both the similarities and differences in approach in rearing clams, oysters and scallops in different climatic zones. All aspects of the culture process are described, together with basic considerations in choosing a site for hatchery development and in the design of a suitable facility. It also includes the post-hatchery handling of larvae in remote setting and also of spat in both land- and sea-based nurseries. This document is intended to assist both technicians entering the field as well as entrepreneurs researching investment opportunities in bivalve culture.

Download or read book Livestock s Long Shadow written by Henning Steinfeld and published by Food & Agriculture Org.. This book was released on 2006 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The assessment builds on the work of the Livestock, Environment and Development (LEAD) Initiative"--Pref.