Results 131 to 140 of about 3,730 (179)
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Atlantic Herring: Stock Discreteness and Abundance
Science, 1982The number of genetically distinct herring stocks is determined by the number of distinct, geographically stable larval retention areas. Spawning sites in these areas may be highly localized or dispersed. Absolute population size mostly depends on the retention area available to the density-dependent larval-postlarval stage.
T D, Iles, M, Sinclair
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Backscatter measurements of Atlantic herring in the Northwest Atlantic
The Journal of the Acoustical Society of America, 2000Annual fisheries acoustic surveys have recently been implemented in the Gulf of Maine and Georges Bank regions to estimate the abundance and biomass of Atlantic herring (Clupea harengus). Research was devoted to the verification of backscatter measurements from Atlantic herring using multifrequency echo-integration, omni-directional sonar, pelagic ...
William L. Michaels +2 more
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Polymorphism in the Esterases of Atlantic Herring
Transactions of the American Fisheries Society, 1970Abstract The esterase enzymes of the tissues of Atlantic herring (Clupea harengus harengus) were analyzed by starch gel electrophoresis. Four sets of esterase bands were distinguished by their electrophoretic mobility, their relative activity with the two substrates, alpha-naphthyl acetate and alpha-naphthyl butyrate, and their relative concentrations ...
George J. Ridgway +2 more
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Atlantic herring as a dietary component for culture of Atlantic salmon
Aquaculture, 1974Abstract Chopped herring was readily eaten by Atlantic salmon. Fry, parr and smolts grew well on a herring-rich diet but after long periods fry and smolts developed symptoms of nutritional deficiency which were quickly cured by omitting herring from the diet. Parr, fed herring and liver separately on alternate days, did not show ill effects.
Richard L. Saunders, Eugene B. Henderson
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Herring in the Northeast Atlantic (Norwegian spring-spawning herring)
2022ICES advises on the basis of the management plan of EU, Faroe Islands, Iceland, Norway, and Russia that landings in 2013 should be no more than 619 000 t.
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Metapopulations and the Atlantic herring
Reviews in Fish Biology and Fisheries, 1997Two opposing concepts of Atlantic herring, Clupea harengus L., population structure are critically reviewed with the objective of unifying these divergent views under the metapopulation concept. It is concluded that neither the discrete population concept nor the dynamic balance concept adequately explains all the data associated with herring ...
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Hypobaric Storage of Atlantic Herring and Cod
Canadian Institute of Food Science and Technology Journal, 1979Abstract Eviscerated Atlantic herring and cod were held at 2–4°C in air at 1 atm. and at 0.018–0.026 atm. in a hypobaric chamber. Fish held at low pressure retained a highly acceptable odor and appearance for approximately 3 days longer than those stored in air and retained borderline acceptability for approximately 8 days longer than those held in ...
N.F. Haard +3 more
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Observing Atlantic herring by parametric sonar.
The Journal of the Acoustical Society of America, 2009Atlantic herring (Clupea harengus) has been observed in situ by the Kongsberg TOPAS PS18 parametric sub-bottom profiling sonar, with nearly horizontal transmit and receive transducer arrays mounted flush on the hull of R/V G. O. Sars, at N71.4 E16.3. The primary frequencies are in the band 15–21 kHz, with nonlinearly generated difference frequencies in
Olav Rune Godø +3 more
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Photomicrographic atlas of Atlantic herring embryonic development
Journal of Fish Biology, 1997The development of the Atlantic herring is related to a staging series intended to provide a standard background for studies of herring embryonic development. The series is based on herring embryos from the Isle of Man (Irish Sea) stock reared at 8°C.
J. Hill, I. A. Johnston
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Buoyancy of Atlantic and Pacific Herring
Journal of the Fisheries Research Board of Canada, 1969Pacific and Atlantic herring after adjustment to water 36 cm deep had sinking-factors between 1000 and 1008 and showed an inverse relationship between oil content and swimbladder volume up to 12% oil. At higher oil contents a swimbladder volume between 2.6 and 3.0% of total body volume was maintained.
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