Estimating the threshold amount of adductor muscle arginine phosphate content required for recovery of vitality in the scallop Mizuhopecten yessoensis
2015
Takeda, T. ((Hokkaido Research Organization Central Fisheries Institute, Yoichi, Hokkaido (Japan)), (Hokkaido University, Hakodate, Hokkaido (Japan). Graduate School of Fisheries Sciences, Chair of Marine Food Science and Technology)) | Sakurai, I. | Maekawa, K. | Nozawa, H.
The Japanese scallop Mizuhopecten yessoensis, which is a major fisheries resource in Japan, is farmed in coastal areas such as Lake Saroma in Hokkaido. Recently, mass die-offs of cultured Japanese scallops have been frequently observed at Lake Saroma. Our previous results suggested that arginine phosphate concentration in the adductor muscle can be a good predictor of scallop die-off. However, when Japanese scallops are reared in a stressful environment such as high water temperature, low salinity, or anoxia and then returned to their normal rearing environment, some individuals have been found to recover, while others die. This study aimed to deter mine whether arginine phosphate may be an indicator for predicting which individuals recover and which die. The results suggested that the scallops would die without recovering when arginine phosphate levels decreased to approximately 5 micro mol/ g or lower, even if they were returned to the normal rearing environment.
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