789 research outputs found
Sea lice on wild juvenile Pacific salmon and farmed Atlantic salmon in the northernmost salmon farming region of British Columbia
No full textThe Kitasoo/Xai'xais First Nation established a program to monitor sea lice levels on seaward migrating wild juvenile salmon in their traditional territory which contains the most northerly salmon farming region of British Columbia. A total of 12 locations were routinely sampled during the period between 2005 and 2008 to gain a better understanding of the levels and patterns of sea lice infestation on wild salmonids in the region. Over 5000 juvenile salmon were collected and examined for sea lice. Around 78% were identified as pink salmon, 18% were chum salmon and the remainder classified as ‘other’ salmon (coho and sockeye salmon). Two species of sea lice were observed: Lepeophtheirus salmonis and Caligus clemensi. Over 91% of all the juvenile salmon examined had no sea lice and there was no significant difference in L. salmonis prevalence levels among salmon species. However, chum salmon had significantly lower C. clemensi prevalence levels than either pink or ‘other’ salmon. There were significant annual and regional differences in L. salmonis prevalence on juvenile pink salmon; the lowest prevalence in all sampling zones occurring in 2008, while channels containing salmon farms consistently had higher levels than those without salmon farms. Mean prevalence of L. salmonis in the channels with salmon farms ranged from 2% to 9% which is lower than levels published for the same region in different years or for other areas without salmon farms. C. clemensi prevalence on wild pink salmon was associated with sampling zone and the size of pink salmon; larger juvenile fish were more likely to be infected than smaller fish. During the period of wild juvenile salmon migration, the mean abundance of motile stages of L. salmonis on farmed salmon ranged from 0.13 to 0.79 lice per fish but there were no significant differences among years. In comparison, C. clemensi abundance levels on farms were significantly higher in 2005. Factors contributing to variations in these observations are discussed.Source type: Electronic(1
Historical and projected future drought in Oregon
No full textLarry O'Neill, Matthew Koszuta, Nick Siler, and Erica Fleishman.This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Includes bibliographical references (pages 18-21).Mode of access: Internet from the Oregon Government Publications Collection.Text in English
PCBs: Recent Advances in Environmental Toxicology and Health Effects
No full textIn April 2000 researchers from around the world met in Lexington, Kentucky to bring together the very latest information on the chemistry and biological effects of the environmental pollutants known as Polychlorinated Biphenyls (PCBs). The result is a comprehensive and extensive treatment of the very latest findings on all significant subjects relating to PCBs and their health risks. The thorough introduction and sixty-two scientific papers presented here represent the most up-to-date research by scientists in government, private industry, and academia.
Larry W. Robertson, professor in the Graduate Center for Toxicology, is the director of the University of Kentucky Superfund Basic Research Program.
Larry G. Hansen, professor at the University of Illinois, is the author of The Ortho Side of PCBs: Occurence and Disposition.
Purveys the quintessential of biological knowledge on PCBs. . . . It is the ideal handbook and reference work for both the biological researcher and the occupational scientist. —Applied Occupational and Environmental Hygiene
Excellent and convincing. A definitive book on the subject of PCB toxicology and health effects that is urgently needed. —David O. Carpenterhttps://uknowledge.uky.edu/upk_medicine_and_health_sciences/1007/thumbnail.jp
1st INCF Workshop on Neuroanatomical Nomenclature and Taxonomy
No full textThe goal of this workshop was to agree on a general strategy for developing a systematic, useful, and scientifically appropriate framework for neuroanatomical nomenclature. The workshop focused on general principles that will serve as a basis for future decisions on implementation strategies. The report discusses the problems arising from the use of different parcellation schemes and use of different terminologies and highlights the need of a universal vocabulary for describing the structural organization of the nervous system. Workshop participants encourage the creation of an International Coordinating Committee for Neuroanatomical Nomenclature and propose short- and long-term goals for such a committee
Larry Jones address. Washington D. C.
No full textIn this audio recording, Lawrence Jones discusses Black theological education and the Society for the Study of Black Religion. He explains how important it is for Black scholars to become published. After Lawrence Jones gives his presentation there is a discussion among those present on scholarship and publication. Dr. Riggins Earl of the Interdenominational Theological Center is among those present and participating in the discussion.The Atlanta University Center Robert W. Woodruff Library acknowledges the generous support of the National Endowment for Humanities - Humanities Collections and Reference Resources Implementation Project Grant in supporting the processing and digitization of a number of its major archival collections as part of the project: Spreading the Word: Expanding Access to African American Religious Archival Collections at the Atlanta University Center Robert W. Woodruff Library.</em
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From Development to Degeneration and Regeneration of the Nervous System
No full textThis book describes current information about the three areas mentioned in the title: neuronal migration and development, degenerative brain diseases, and neural plasticity and regeneration. The chapters in the first section of the book examine the cellular and molecular mechanisms by which neurons are generated from the ventricular zone in the forebrain and migrate to their destinations in the cerebral cortex. This description of cortical development also includes discussions of the Cajal-Retzius cell. Another chapter provides insight about the development of another forebrain region, the hypothalamus. The remaining chapters of the first section examine the clinical relevance of brain development in certain disease states in humans. The second section begins with details about the dopaminergic neurons in the substantia niger and their loss in Parkinson's disease. Two subsequent chapters describe changes in brain aging, including changes in the numbers of myelinated axons. Other chapters in this section describe important cellular and molecular changes found in Alzheimer's disease and human epilepsy. The last section begins with a chapter on how the brain's own stem cells provide newly generated neurons to the hippocampal dentate gyrus and how these neurons become integrated into neural circuitry. Then two chapters examine some of the neuroplastic changes that take place in motor and sensory cortices of awake behaving primates. The concluding two chapters address the issue of regeneration in the injured spinal cord and the factors that may contribute to its success
The cryptic fish fauna of a shallow rock reef habitat, Santa Catalina Island, California
No full textThe rock reef/kelp forest habitat of southern California is among the most productive and well-studied marine habitats. The importance of the cryptic fish fauna, however, has not been studied. This study was undertaken to assess this particular element of the fauna in a rock reef habitat, and to relate the findings to past studies conducted on the conspicuous fishes. Among the aspects of the fauna studied were species compositions, numerical abundance, seasonal and temporal variations, depth distribution, size distribution, biomass density and diversity. The fishes were collected using an ichthyocide (rotenone) and a specially designed net. Bimonthly collections were taken, five samples from each of three depth strata: 2.2 to 3.0m, 4.2 to 5.1m, 6.4 to 7.6m. The collected fishes were weighed and standard length was measured. Conspicuous fishes were censused by visual diver transect at two six-month intervals. Ninety percent of the cryptic fish fauna was made up of five species, Lythrypnus dalli, Paraclinus integripinnis, Gibbonsia elegans, Alloclinus holder and Lythryonus zebra. Water temperature correlated significantly with the numbers of individuals (r = 0.433, p (0.05) and the H (Shannon-Weiner) diversity (r = 0.459, p (0.05). Distribution by depth correlated significantly with greater numbers of L. dalli in deeper water. L. dalli while G. elegans recruited in May and June. Comparisons between this study and previous investigations indicated that the inclusion of the cryptic fishes may have enhanced total density of individuals by an average of 80% and as much as 83%; diversity an average of 44% and as much as 60%; and biomass density by an average of 10% and as much as 15%.Includes bibliographical references (pages 31-33)California State University, Northridge. Department of Biology
The aging, validation, and back-calculation of the date of birth and settlement date of young-of-the-year California halibut (Paralichthys Californicus) into Alamitos Bay California using a new technique for the grinding of sagittal otoliths
No full textFifty-six young-of-the-yearCalifornia State University, Northridge. Department of Biology.Includes bibliographical references (leaves 47-80
A Catholic review of the Moor’s marginalization in Africana studies, 2020
No full textThe title of this dissertation functions as a double entendre. The etymology of the word catholic, in Latin, was rendered in Old English as eallgeleaflic. It means embracing all or being universal in scope. It meant not being narrow-minded or bigoted. Consequently, this research is a review of the “orthodox-ed” (narrow-minded) narrative of African (Moorish) people and their history in the Americas and the domiciling of this narrative within the curricula of Black Studies, African American Studies, and Africana Studies. Essentially, the marginalization of the narrative of Moorish history (Islam) in the narratives of Indigenous, Autochthonous, First World (IAFW) people perpetuates Catholic (Christian) culture and ideology. During my initial dissertation research in Africana studies starting in 2015, I was studying the pre-Columbian African presence in early America with a focus on “Peewee River Indians” in South Carolina. It turned out that there was a strong West African (Malian) influence on the culture and people. This also led me to investigate claims made by the Moorish Science Temple of America (MSTA) and its founder, the Honorable Noble Drew Ali. Ali claimed that the “Indian” people who were here in North America proper (the USA) were, indeed, part of the larger Moorish Empire which encompassed North and West Africa, the Mediterranean, Al Andalusia (Spain and Portugal), the Caribbean and many other locations in the Americas. After comparing the canonized narratives of African people in America to that of the MSTA, this research subsequently demonstrates that the MSTA’s narrative is purposefully marginalized in the larger American society and subsequently Africana Studies. The conclusions drawn from this research suggest that the simplistic or negated narrative of the Moors in American history maintains Western hegemony. Given the religious (Christian) character of Western society and academia, the Moor’s marginalization is indispensable to the Christian narrative and its predominance. Consequently, revision would reshape national, cultural, and religious identities, especially for those who have traversed name changes from Moor (as claimed by the MSTA), to Indigo, Indian, Negro, Black, Colored, Afro, and African American
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