<scp>Effect of stocking density in plastic boxes without oxygenation on the transport of pirarucu,</scp> <i>Arapaima gigas</i> (Schinz, 1822)

Abstract For the evaluation of effects transport density pirarucu juveniles, 210 juvenile pirarucus, Arapaima gigas (488 ± 26.5 g) were randomly distributed in 12 plastic boxes at densities 98, 146, 195, and 244 g L −1 . The was carried out on a paved highway for 4 h, end transport, all returned to laboratory. After (AT), 8 fish from each experimental unit transferred tanks (250 L) final samplings. Blood sampled three different times: immediately AT, 24, 48 h after transportation. survival hematocrit, cortisol, glucose, lactate measured. results showed significant differences ( p &lt; 0.05) blood parameters, there no mortality throughout experiment. At analysis, pirarucus able be transported up open systems without oxygenation, recovering stress until AT.