Download or read book Metabolic Effects of Pesticide Exposure During Embryogenesis in Medaka Oryzias Latipes and Chinook Salmon Oncorhynchus Tshawytscha written by Christopher Aaron Pincetich and published by . This book was released on 2004 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2004 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pesticide Impact on Fish Metabolism written by K.R.S. Rao and published by Discovery Publishing House. This book was released on 1999 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Introduction, Material and Methods, Independent and Combined Toxicity of Carbaryl and Phenthoate Determination of LC50 Values and Confirmation of Synergism, Some Observations and Physical, Morphological and Behavioural Changes in Channa Punctatus, Studies on Acetylcholinesterase, Studies on whole Animal and Tissue Respiration, Studies on Some Haematological Parameters, Studies on Some Aspects of Carbohydrate Metabolism, Studies on Some Aspects of Nitrogen Metabolism, General Discussion, Summary.
Download or read book Fish Physiology Organic Chemical Toxicology of Fishes written by Keith B. Tierney and published by Academic Press. This book was released on 2013-12-04 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish Physiology: Organic Chemical Toxicology of Fishes discusses the different types of organic chemical contaminants and their respective toxic effects in fish. The book also covers the detection of dissolved organic compounds and methods to assess organic toxicity. Substances addressed in this book include organometallics, hydrocarbons, endocrine disrupting compounds (EDCs), insecticides, herbicides, and pharmaceuticals. Fish are exposed to an ever-increasing array of organic chemicals that find their way into rivers and oceans. Some of these compounds are no longer being produced but nonetheless persist within the environment (persistent organic pollutants, or POPs). The exposure of fish to toxic organic compounds has potential impact on human, fish, and ecosystem health. Yet the regulations that govern environmental water quality vary worldwide, and compliance is never complete. This book provides a crucial resource on these issues for researchers in zoology, fish physiology, and related fields; applied researchers in environmental monitoring, conservation biology, and toxicology; and university-level students and instructors in these areas. Organized by type of toxic organic chemicals Includes metals, POPs, EDCs, herbicides, insecticides, and pharmaceuticals Measures toxicity in a variety of ways aside from lethality Probes the toxic effects of compound mixtures as well as single pollutants
Download or read book Morphological Effects of Bisphenol A on the Early Life Stages of Medaka Oryzias Latipes written by Stephanie D. Pastva and published by . This book was released on 2000 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Warming and Hypoxia as Individual and Combined Stressors on the Survival Physiology and Development of Early Life Stage Chinook Salmon written by Annelise Mary Del Rio and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chinook salmon (Oncorhynchus tshawytscha) populations in the Central Valley of California are the most vulnerable to climate variability within the species (Crozier et al., 2019). Major threats include climate change, habitat loss, and water management infrastructure. Early life stages of salmon are particularly susceptible to stressors related to these threats because they have little to no ability to swim away from sub-optimal conditions within the incubation environment. Instead, they must rely on internal physiological responses to cope with stressors. Developing salmon thrive in cool, well-oxygenated water; however, warming and hypoxia (low dissolved oxygen) are two stressors that are prevalent within the gravel redds. Few studies have examined the effects of multiple, co-occurring stressors on salmon embryos, but warming and hypoxia are likely to interact because of opposing effects on metabolic rate and physiological performance. The interaction between warming and hypoxia may have contributed to recent high embryo mortality in an endangered population of Sacramento River salmon, where low flows and resulting hypoxia are hypothesized to have reduced the thermal tolerance of salmon embryos (Martin et al. 2017). In this dissertation I examined the effects of warming and hypoxia on the survival and physiology of early life stage Chinook salmon in laboratory and field studies. Rearing embryos under chronic hypoxia resulted in higher mortality, especially in combination with warming, and affected upper thermal tolerance and hypoxia tolerance (Chapter 2). In Chapter 3, I investigated how the timing of exposure to warming, hypoxia, or both stressors affected early life stages during the exposure and found that exposure to both stressors had the greatest effect on hatching, growth, and metabolic rate if embryos were chronically exposed to these stressors during their entire embryogenesis or if they were only exposed late in embryogenesis, shortly before hatch. Furthermore, salmon developmental rate, metabolic rate, and acute stress tolerance continued to be affected in the alevin and fry even though they were transferred to control conditions following hatch, suggesting there are lasting effects of early stress exposure on the physiological performance of juvenile salmon. In Chapter 4, I conducted a field experiment to study how natural water quality variables, with a focus on dissolved oxygen and temperature, affected salmon embryo hatching and survival within artificial redds on the American River near Sacramento, California. Overall, hatching success was low, in part because of poor egg quality. Intergravel dissolved oxygen was highly variable and contributed to differences in embryo survival among the redds, along with intergravel temperature and water flow above the redds. Overall, these studies indicate that the interactions between temperature and dissolved oxygen affect key aspects of early salmon development and physiology in different ways than the individual stressors. My dissertation should help to inform management strategies to improve early life stage salmon survival in Central Valley rivers such as dam management plans for river flows that consider dissolved oxygen and water temperature for salmon.
Download or read book Index Medicus written by and published by . This book was released on 2003 with total page 2214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1991 with total page 1384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Journal of the Water Pollution Control Federation written by and published by . This book was released on 1991 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pyrethroid Insecticides written by Ethel Eljarrat and published by Springer Nature. This book was released on 2020-08-04 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the latest developments concerning the analysis, fate, behaviour and toxicity of pyrethroid insecticides. Over the last few decades, pyrethroid insecticides have increasingly replaced organochlorine pesticides due to their relatively lower mammalian toxicity, selective insecticide activity and lower environmental persistence. They represent 25% of global sales of insecticides, and are considered to be “safe” since they are converted to non-toxic metabolites by oxidative metabolism in fish and by hydrolysis in mammals. However, recent studies have demonstrated their environmental ubiquity, their bioaccumulation and their toxicity in various aquatic and terrestrial organisms, and even in humans. Featuring contributions by leading experts, the book discusses the physico-chemical properties and uses of pyrethroid insecticides; the latest chemical analytical methods; their occurrence in the environment, biota and food; and their isomeric and enantiomeric behaviour. It particularly highlights the toxicological effects and human exposure to pyrethroid insecticides, and also offers insights into the effects of the salmon industry on the marine environment with a case study of sea lice treatment using pyrethroids. This comprehensive book is a valuable source of information for environmental scientists, policymakers and producers interested in issues related to pyrethroid insecticides.
Download or read book Pesticide Toxicity to Non target Organisms written by Johnson Stanley and published by Springer. This book was released on 2016-08-12 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pesticide should cause effect on the target pests and be selective enough to spare the non-target beneficial. The book deals with the pesticide toxicity to predators, parasitoids and microbes which are used for pest management in the agroecosystem. The other beneficials exposed to pesticides are pollinators, earthworms, silkworm and fishes. The book contains information on the modes of pesticide exposure and toxicity to the organisms, sub-lethal effects of insecticides and method of toxicity assessment, risk assessment of pesticidal application in the field. The purpose of the work is to compile and present the different procedures to assess pesticide poising in organisms related to the agroecosystem along with discussions on risk assessment procedures with clear comparison of toxicity of pesticides to target pests and non target beneficial organisms.
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1994 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Short term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms written by and published by . This book was released on 1994 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Metabolomics written by Diana Alvarez-Munoz and published by Elsevier. This book was released on 2020-06-03 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Metabolomics Applications in Field and Laboratory Studies: From the Exposome to the Metabolome presents an overview of the current state of aquatic environments and problems caused by human pressure and daily life. The presence of contaminants in nature and their effects are evaluated, along with recommendations for preservation. This book not only shows readers how to implement techniques, it also guides them through the process. As metabolomics becomes a more routine technique for environmental studies and future perspectives, a guide for validation and globalization of current approaches is needed. Presents relevant and reliable information on the use of different analytical techniques for establishing the environmental metabolomics of polluted systems Includes a critical review of each central topic in every chapter, together with a bibliography and future trends Provides, for the first time, a global opinion and guide for achieving standardized results
Download or read book A Risk Management Strategy for PCB Contaminated Sediments written by National Research Council and published by National Academies Press. This book was released on 2001-06-07 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a risk-based framework for developing and implementing strategies to manage PCB-contaminated sediments at sites around the country. The framework has seven stages, beginning with problem definition, continuing through assessment of risks and management options, and ending with an evaluation of the success of the management strategy. At the center of the framework is continuous and active involvement of all affected parties-particularly communities-in the development, implementation, and evaluation of the management strategy. A Risk-Management Strategy for PCB-Contaminated Sediments emphasizes the need to consider all risks at a contaminated site, not just human health and ecological effects, but also the social, cultural, and economic impacts. Given the controversy that has arisen at many PCB-contaminated sites, this book provides a consistent, yet flexible, approach for dealing with the many issues associated with assessing and managing the risks at Superfund and other contaminated sites.
Download or read book EPA 540 9 written by and published by . This book was released on 1975-02 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pesticides in Urban Environments written by Kenneth D. Racke and published by . This book was released on 1993 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a symposium held in San Francisco in April 1992. The urban environment discussed includes homes, yards, gardens, public parks, golf courses, and restaurants. Some common products for the urban market are turf pesticides, termiticides, home and garden pesticides, indoor pesticides, and rodenticides. The papers are divided into five sections, each focusing on a different facet of urban pesticide use: pests and pesticides, dissipation of pesticides, mobility of pesticides, urban pesticides and humans, and urban pesticides and nontarget animals. Annotation copyright by Book News, Inc., Portland, OR
