抄録
Tolerability of the Kuruma prawn Penaeus japonicus exposed to air was investigated at two different relative humidities (R. H.). Under 14°C air conditions, 100% survival times, rates of water loss, respiratory activity, and muscular levels of lactate and ammonia were examined for the prawn previously acclimated to 18°C.
The 100% survival times were 23 and 51h at 73 and 93% R. H., respectively. Cumulative rates of water loss were influenced by R. H. and time; 17.28 and 4.71% at 73 and 93% R. H. after 28 and 70h air exposure, respectively. When stored at 93% R. H., the O2 consumption of the prawndid not fall in 48h contrary to its fall at 73% R. H. in 16h. At 93% R. H., 60h aerial exposure produced lactate increase, contrary to its slight and not significant increase at 73% R. H. in 16h. For muscular ammonia, a slight but significant increase occurred in 16 and 24h air exposure at 73 and 93% R. H., respectively. Thus high R. H. prolongs the air tolerance of the prawn, proposing a new technical device to its live transportation.
