Population dynamics of the Calanoid copepod, Bestiolina similis, in small scale cultures

VanderLugt, Kyle R.
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Population dynamics of the calanoid copepod, Bestiolina similis, were assessed in 3.5 L cultures with maintained food concentrations. Populations were divided into four stage groups (NI-N2, N3-N6, CI-C4 and C5-C6) and densities of stage groups (animals L-1), female egg production rates (eggs per female per day or EF1D-1), recruitment rates (eggs per liter per day or EL-1D-1 and population mortality rates (animals L-1D-1), were measured over time in cultures initially stocked with wild caught adult and sub-adult animals (stages C5-C6). In all cultures we observed a consistent population cycle comprised of five distinct growth phases: lag, growth, peak plateau, decline, and post decline. The complete temporal population cycle occurred over 19 days at temperatures ranging from 24-27ºC. Despite significant temporal variation in population densities within cultures (ANOVA, P < 0.05), changes in animal abundances were predictable as a result of consistent temporal changes in female egg production rates (EF1D-1), recruitment rates (EL-1D-1), and population mortality rates (animals L-1D-1). This consistency allowed for the ability to forecast population abundances including densities of nauplii. Results will be applied in future studies to improve management intervention techniques leading to sustained production of nauplii over time, and to coordinate the first feeding of marine finfish larvae with a suitable food supply.
Thesis (M.S.)--University of Hawaii at Manoa, 2007.
Includes bibliographical references (leaves 68-69).
ii, 80 leaves, bound ill. 29 cm
Calanoida -- Growth, Plankton culture
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