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A modelling approach to evaluate potential management actions designed to increase growth of white perch in a high‐density population
Author(s) -
CHIZINSKI C. J.,
POPE K. L.,
WILDE G. R.
Publication year - 2010
Publication title -
fisheries management and ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 55
eISSN - 1365-2400
pISSN - 0969-997X
DOI - 10.1111/j.1365-2400.2009.00723.x
Subject(s) - perch , population , biology , fishery , white (mutation) , population growth , biomass (ecology) , population model , demography , ecology , fish <actinopterygii> , biochemistry , sociology , gene
A deterministic, age‐structured population model was developed to simulate potential management scenarios designed to increase growth of individuals (quantified by maximum length) in a hypothetical population of white perch, Morone americana (Gmelin). Four scenarios were developed that included non‐selective mortality of adult white perch, increased mortality of age groups most influential on population growth, increased age‐0 mortality and inhibiting recruitment after spawning. The greatest increase in maximum length occurred with non‐selective adult mortality when population biomass was reduced by 97%; lesser increases in maximum length were achieved with the other management scenarios. Populations returned to their original state after control efforts ceased for each scenario.