Culture of the mysid, Mysidopsis almyra (Bowman), (Crustacea: Mysidacea) in a static water system: Effects of density and temperature on production, survival and growth

  • Domingues P
  • Turk P
  • Andrade J
 et al. 
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Abstract

The effects of animal density and water temperature on the culture of the mysid, Mysidopsis almyra (Bowman), in a static water system were evaluated. An initial set of experiments tested the effects of mysid density on production. Densities of 25, 37.5, 50, 100 and 200 mysids L-1 were placed in trays with 20 L of sea water. Temperatures were maintained at 26 ± 2 °C. A second set of experiments was conducted in the same system at three different temperatures (18 ± 1. 22 ± 1 and 26 ± 2°C) using a mysid density of 50 mysids L-1 (1000 mysids tray-1). All experiments had a duration of 30 days. The mysids in all trials were cultured at 20 ± 2‰ salinity and fed Artemia nauplii enriched with marine fatty acids. There was a positive correlation between production and mysid densities up to populations of 100 mysids L-1; maximum production was 273 ± 99 hatchlings day-1. At a population density of 200 mysids L-1, high mortality and low production were recorded 4 days after the start of the experiment. The experiments testing different temperatures showed that mysid production was higher at 22 ± 1 °C, although this result was not significant (P > 0.05). Growth rates and hatchling survival after 7 days were significantly higher (P < 0.05) at 26 ± 2°C compared to survival and growth at 18 or 22 °C.

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Authors

  • P. M. Domingues

  • P. E. Turk

  • J. P. Andrade

  • Phillip G. Lee

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