Download or read book Health and Reproductive Implications of Exposure of Pacific Herring Clupea Pallasi Adults and Eggs to Weathered Crude Oil and Reproductive Condition of Herring Stock in Prince William Sound Six Years After the Exxon Valdez Oil Spill written by Mark G. Carls and published by . This book was released on 1997 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tongass National Forest N F Kensington Gold Project written by and published by . This book was released on 2004 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reproductive Success of Pacific Herring Clupea Pallasi in Prince William Sound Alaska Six Years After the Exxon Valdez Oil Spill written by Scott W. Johnson and published by . This book was released on 1996 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Toxicology and Chemistry written by and published by . This book was released on 2000 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on Pacific Herring Clupea Pallasi Spawning in Prince William Sound Following the 1989 Exxon Valdez Oil Spill 1989 1992 written by Evelyn Dale Biggs and published by . This book was released on 1997 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Discovery and Innovation written by and published by . This book was released on 2004 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Field and Laboratory Assessment of Oil Spill Effects on Survival and Reproduction of Pacific Herring Following the Exxon Valdez Spill written by WH. Pearson and published by . This book was released on 1995 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific herring, Clupea pallasi, spawn along hundreds of kilometres of shoreline in Prince William Sound. Herring eggs incubate in intertidal and shallow subtidal areas attached to kelp and eelgrass. In April 1989, following the Exxon Valdez oil spill, there was potential in Prince William Sound for localized effects on spawning herring, their eggs, and the hatching larvae. Field and laboratory investigations in 1989 and 1990 were designed to assess potential injury to Prince William Sound herring by testing for differences between oiled regions and unoiled reference areas and by relating biological response variables to the concentrations of polycyclic aromatic hydrocarbons (PAH) in eggs-on-kelp samples. Hydrocarbon analyses and laboratory incubation were conducted on eggs-on-kelp samples from Prince William Sound and Sitka Sound. The eggs and hatching larvae were examined to evaluate several response variables: egg development, hatch, larval survival, abnormal development of larvae, larval length, and larval yolk-sac volume.

Download or read book Pacific Herring Natal Habitats Prince William Sound written by T. Mark Willette and published by . This book was released on 1998 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This project estimated the biomass of spawning adult Pacific herring Clupea pallasi in Prince William Sound (PWS) using underwater diver surveys of deposited eggs and hydroacoustic techniques"--P. 1.

Download or read book Oceanis written by and published by . This book was released on 2006 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Immunotoxicology of Pacific Herring written by Susan Mary Sanders and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Declines in Pacific herring returning to spawn in Prince William Sound four years after the 1989 Exxon Valdez oil spill, and isolation of pathogens, raised concern that crude oil exposure might alter immunocompetence and increase disease susceptibility. While adverse effects of sublethal crude oil exposure on eggs, embryos and larvae of Pacific herring and median lethal concentrations for juveniles and adults were known, little information existed on immunological consequences of sublethal exposure in juvenile and adult herring. Therefore, a suite of assays from the 3-tiered immunotoxicological approach examined if sublethal water soluble fraction of oil (WSFO) exposure of juvenile and adult herring affects their hematology, plasma biochemistry and immunological status. Wide intraspecific variance of several variables was identified in control fish, which was largely attributable to age, size, and holding time prior to experiments, as well as duration of experiments. Additionally, skin lesions were associated with elevation of plasma lysozyme and hematocrit in juveniles, while hematocrit, leucocrit, spleen-somatic index (SSI) and plasma cortisol varied with gender in adults. A significant captivity effect was observed in control and WSF fish alike. In a series of experiments using a pulse 16 to 28 day exposure to WSFO (26 to 321 ppb total polyaromatic hydrocarbons range), few statistically significant (p

Download or read book Oil Effects on Spawning Behavior and Reproduction in Pacific Herring Clupea Harengus Pallasi 2311205196 written by and published by . This book was released on 1985 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Validation of Acoustic Surveys for Pacific Herring Clupea Pallasii Using Direct Capture written by Mary Anne Bishop and published by . This book was released on 2018 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigation of associations between catch rate and habitat covariates of Pactific herring in Prince William Sound, using generalized linear mixed models.

Download or read book Oil Effects on Spawning Behavior and Reproduction in Pacific Herring Clupea Harengus Pallasi written by W. H. Pearson and published by . This book was released on 1985 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pacific Herring written by Evelyn D. Brown and published by . This book was released on 1998 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Using Otolith Chemical Analysis to Determine Larval Drift of Prince William Sound Pacific Herring Clupea Pallasii written by Nate Bickford and published by . This book was released on 2007 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physical and Biological Factors Affecting Pacific Herring Egg Loss in Prince William Sound Alaska written by Christopher N. Rooper and published by . This book was released on 1996 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: The biomass of Prince William Sound herring (Clupea pallasi) is estimated from egg deposition surveys. Because surveys occur after spawning, a correction for egg loss is required. I constructed ANOVA models based on environmental factors to estimate the egg loss correction in 1990-1991 and 1994-1995. The models explained 52% to 85% of the data variation. Depth of spawn was the primary factor determining egg loss, and air exposure could be substituted for depth. The correction factor was estimated at 33%. The total loss of eggs from spawning to hatching ranged from 67.40% to 100% averaging 76.06%, Two processes affecting egg loss, wave action and fish predation, were also examined. Typical wave energies were not found to contribute significantly to egg loss, but a threshold wave energy may exist beyond which egg loss is high. Consumption of eggs by greenling (Hexagrammidae) was estimated at 2.2% to 8.5% of the total spawn.

Download or read book Herring Disease Program written by Paul Hershberger and published by . This book was released on 2018 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of annual field surveys of Ichthyophonus, viral hemorrhagic septicemia virus, and erythrocytic necrosis virus in adult and juvenile Pacific herring (Clupea pallasii) in Prince William Sound, Alaska and several reference populations in Alaska, British Columbia, and Washington.