Universidad Politécnica de Cartagena. Ediciones UPCT
Abstract
The Pacific Oyster has adapted well to the southern Brazilian environmental conditions,
where the combination of factors allows harvest in less than eight months. Although
convenient for most of the year, it is during summer that water temperature can exceed 30
ºC, a summer condition that leads to high mortality rates. According to the literature, if spawning
is not triggered, a substantial reduction in mortality can be achieved. Studies previously
presented at CYTEF 2020 showed that confining oysters at temperatures close to those of
basal metabolism can inhibit the effects of gametogenesis. Further research was conducted
in order to verify the possible outcomes of long term confinement of late autumn harvested
oysters, presenting high glycogen reserves. This article reports the experimental results of
those tests, regarding the preservation of quality attributes and the reduction of mortality rates,
when confining oysters under temperatures similar to those of basal metabolism regime