Differences in the acoustic characteristics of forage fish species in the Gulf of Alaska and the Bering Sea were examined using Kirchhoff ray-mode (KRM) backscatter models. Our goal was to identify species-specific characteristics and metrics that facilitate the discrimination of species using acoustic techniques. Five fish species were analyzed: capelin (Mallotus villosus), Pacific herring (Cl...

We show that humpback-whale vocalization behavior is synchronous with peak annual Atlantic herring spawning processes in the Gulf of Maine. With a passive, wide-aperture, densely-sampled, coherent hydrophone array towed north of Georges Bank in a Fall 2006 Ocean Acoustic Waveguide Remote Sensing (OAWRS) experiment, vocalizing whales could be instantaneously detected and localized over most of t...

"One fine day as my mother was putting the bread in the oven," recounted Marc Chagall, "I went up to her and taking her by her flour-smeared elbow I said to her, 'Mama I want to be a painter.'" This wish was out of line with the circumstances. The oldest of nine children in a family of modest means, he was aware of the constraints and his father's toil in the fish-curing business, "My heart use...

Fish (herring, cod, eelpout, round goby, flounder, perch, lamprey, pikeperch, sand eel and lesser sand eel) caught in the Gulf of Gdansk in 1992 contained the residues of penta(PCBz) and hexachlorobenzene (HCBz) in concentrations from 0.09 to 0.75 and from 0.36 to 3.7 ng/g wet weight (3.3-14 and 6.5-41 ng/g lipid weight), respectively. Both compounds were identified and quantified using capilla...

Body size is a key parameter influencing demographic characteristics of fish populations as well as market value of landed catch. Yet in bioeconomic modelling body size is often an overlooked biological and economic parameter. Here we evaluate how sizedependent pricing influences optimal harvest strategies in a model parameterized for two pelagic fisheries, those targeting Atlantic herring (Clu...

Studies were conducted to determine the effects of increased dietary levels of vitamin and trace mineral mixtures, methionine, meat and bone meal, fish meal, and safflower oil on foot pad dermatitis in dwarf and normal size Single Comb White Leghorn layers. All layers were maintained in individual wire cages throughout a 40-week experiment period. Individual birds were scored for the incidence ...

The etiology and treatment of mood disorders has not yet been elucidated. Omega (omega)-3 fatty acids are essential fatty acids, which cannot be synthesized in the human body. Eicosapentanoic acid (EPA) and docosahexaenoic acid (DHA) are representative omega-3 fatty acids which are found in fish (eg., mackerel, herring, Chinook salmon) and vegetables (eg., flax, walnut, canola). The peripheral ...

The presence of unidentified growth factors in fish solubles has been postulated for more than a decade (Sunde, Cravens, Elvehjem & Halpin, 1950; Fuller, Carrick & Hauge, 1952; Lillie, Sizemore & Bird, 1953). During this period several attempts have been made to fractionate and concentrate the active constituents (Menge, Denton, Sizemore, Lillie & Bird, 1953; Mason, Sacks & Stephenson, 1961 ; S...

We sampled fish at eight locations in western Prince William Sound (PWS), Alaska, in April, July, and September 2006, and July 2007, to identify species assemblages and habitat use. At each location, fish were sampled with a 37-m long variable mesh beach seine in three nearshore habitats: bedrock outcrops, eelgrass meadows, and cobble beaches with kelp. A total of 49,060 fish representing 45 sp...

A new group of arsenolipids based on cell-membrane phosphatidylcholines has been discovered in herring caviar (fish roe). A combination of HPLC with elemental and molecular mass spectrometry was used to identify five arsenic-containing phosphatidylcholines; the same technique applied to salmon caviar identified an arsenic-containing phosphatidylethanolamine. The arsenic group in these membrane ...