Optimizing transport of live juvenile cobia (Rachycentron canadum): Effects of salinity and shipping biomass

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

Live juvenile cobia (Rachycentron canadum) transport methods were examined to determine opportunities for increasing packing density in closed containers for durations up to 24h. Juvenile cobia (27 to 46days post-hatch (dph)) were tested for salinity tolerance via abrupt transfer from 35ppt salinity water to salinities ranging from 0ppt to 55ppt. Results indicated 100% survival at 24h post-transfer at salinities between 11ppt and 45ppt. Using two different salinities within the range tested in the tolerance trials (12ppt and 32ppt), a 24h simulated shipping trial was conducted comparing final survival between the two salinities at each of four packing densities (5kg/m 3, 10kg/m 3, 15kg/m 3, and 20kg/m 3). At packing densities above 10kg/m 3, survival was significantly enhanced at 12ppt relative to rates in the higher salinity (32ppt) treatments. Additionally, there were no apparent effects on post-transport aquaculture performance of the fish shipped at high densities in reduced salinity water. Results of this study suggest that cobia fingerling producers can optimize their current shipping methods and protocols by increasing stocking densities in closed containers, allowing for reductions in labor, material, and mass-dependent transport costs.

Original languageEnglish (US)
Pages (from-to)293-297
Number of pages5
JournalAquaculture
Volume364-365
DOIs
StatePublished - Oct 5 2012

Keywords

  • Aquaculture
  • Euryhaline
  • Improved shipping methods
  • Isosmotic
  • Marine fish

ASJC Scopus subject areas

  • Aquatic Science

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