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An Analysis of Fish Genomes by Density Gradient Centrifugation
European Journal of Biochemistry, 1980DNA was prepared from 33 species of fishes representing 12 of the 31 orders of Teleostei and one order of Chondrichthyes. DNA samples were investigated to determine modal and mean buoyant densities in CsCl (q0 and 〈q〉), main‐band asymmetry, intermolecular compositional heterogeneity and base composition.
A P, Hudson +4 more
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Density-dependent attributes of schooling in small pelagic fishes
The Science of Nature, 2022Abstract Many small pelagic fishes obligately form schools; some of these schools attain a remarkable size. Although the school is a fundamental and important ecological unit and is the site of biological interactions such as competition and predation, information on schooling processes in the field remains scarce ...
Sho Furuichi +3 more
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Estimating Energy Density of Fish
Transactions of the American Fisheries Society, 1995Abstract The use of bioenergetics models in fisheries ecology and management has increased rapidly in recent years, but application-specific information on energy content of fish and their prey has lagged behind. We believe this is because the process of directly measuring energy density is very time consuming.
Kyle J. Hartman, Stephen B. Brandt
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Survival variability and population density in fish populations
Nature, 2008To understand the processes that regulate the abundance and persistence of wild populations is a fundamental goal of ecology and a prerequisite for the management of living resources. Variable abundance data, however, make the demonstration of regulation processes challenging.
Coilín, Minto +2 more
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Density-dependence in the life history of fishes: When is a fish recruited?
Fisheries Research, 2019Abstract In fisheries ecology and stock assessment, recruitment signifies the transition from early stages of the life cycle which are characterized by environmentally-driven variability and density-dependence in mortality rates, to a recruited phase when natural mortality is largely stable and density-independent.
Kai Lorenzen, Edward V. Camp
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Analysis of a Length-Structured Density-Dependent Model for Fish
Bulletin of Mathematical Biology, 2019We present a length-structured matrix model for fish populations in which the probability that a fish grows into the next length class is a decreasing nonlinear function of the total biomass of the population. We present mathematical results classifying the dynamics that this density-dependent model predicts.
Callahan, Jason +4 more
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The density and chemical composition of fish muscle
Experientia, 1978The relationship between the density of muscle from Coregonus pollan Thompson and its chemical composition has a parabolic nature which makes prediction of fat or dry matter content from density impossible.
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The Progressive Fish-Culturist, 1974
(1974). On the Theory of Fish Density. The Progressive Fish-Culturist: Vol. 36, No. 2, pp. 66-71.
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(1974). On the Theory of Fish Density. The Progressive Fish-Culturist: Vol. 36, No. 2, pp. 66-71.
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Density-Dependent Coexistence in Fish Communities
Ecology, 1998A set of stage-structured competition models is considered. The models are parameterized using allometric relationships specific to four fish life history strategies, constraining the model to biologically plausible regions in parameter space. Using a coupled consumer–resource competition model, I get the paradoxical result that two populations can ...
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Echo integration of nonuniform fish densities
The Journal of the Acoustical Society of America, 2005Echo integration is a well recognized method for measuring backscatter intensity and for estimating fish density. EI is appropriate for high and low fish densities as long as the target distribution is uniform across the beam. This is generally the case in mobile applications that use a downward looking transducer.
Robert Kieser, John Hedgepeth
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