Condition index and hemocyte apoptosis as a health indicator for the Pacific oysters, Crassostrea gigas cultured in the western coastal waters of Korea

Lim, Hyun Jeong; Lim, Mae Soon; Lee, Won Young; Choi, Eun Hee; Yoon, Junghyun; Park, Seung Yoon; Lee, Seung Min; Kim, Su Kyoung

doi:10.9710/kjm.2014.30.3.189

Cited by 5 publications

(2 citation statements)

References 30 publications

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“…We also calculated CI of C. gigas as a ratio of the tissue weight to the shell weight since numerous studies have evaluated CI of the Pacific oyster using this ratio. As the Table 3 shows, the annual CI range of C. gigas reared in this study, from 3.9 to 8.7 is similar to the CIs of oysters raised in a tidal flat on the west coast as 1.7 to 8.6 (Lim et al, 2014), or somewhat higher than the values reported from Marennes-Oleŕon Bay, France (Patrick et al, 2006). However, CI of oysters observed in this study is lower than the oysters cultured in New Zealand using subtidal long-line, from 5.3 to 12.1.…”

Section: The Annual Gametogenesis and Reproductive Effortsupporting

confidence: 75%

Growth and Reproduction of the Pacific Oyster Crassostrea gigas Cultured on Tidal Flat in Hebei Spirit Oil Spill Area on the West Coast of Korea Four Years After the Accident

2022

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The Hebei Spirit oil spill (HSOS) accident in December 2007 on the west coast of Korea devastated the intertidal oyster farms along the Taean coast, resulting in the shut-down of the farming for three years. In 2010, two years after the accident, the level of residual oil in the water, sediment, and oyster tissue in the spilled area became similar to the level before the accident, although the fitness of the oysters in the spilled area remained unknown. In an attempt to resume the oyster culture in the spilled area, we monitored the growth and reproduction of the Pacific oyster Crassostrea gigas in an area the most heavily impacted. The oyster spats used in this study were harvested from the oil-damaged area in September 2011 and hardened for 9 months before being transplanted into the grow-out facilities in May 2012. The transplanted oysters demonstrated a fast shell growth for the first 5 months, reaching 53.9 mm in shell length (SL) in October 2011. At the end of the survey in November 2013, the oyster became 65 mm, suggesting an additional year of cultivation to reach the market size. Histology indicated that the annual gametogenesis was synchronous, as the males and females initiated the gametogenesis in January when the water temperature was 5.2°C. The female oysters spawned from July to September, as the water temperature ranged from 21.2 to 24.8°C. An indirect enzyme-linked immunosorbent assay (ELISA) applied in the reproductive effort measurement indicated that the fully ripe female oysters produced 20-23% of their body weight as eggs prior to spawning, which was comparable to the reproductive effort of oysters in oil-spill-free areas. The data suggested that off-bottom rack cultured Pacific oysters at the Euhangri beach successfully recovered from HSOS stresses 4 years after the accident.

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Section: The Annual Gametogenesis and Reproductive Effortsupporting

confidence: 75%

Growth and Reproduction of the Pacific Oyster Crassostrea gigas Cultured on Tidal Flat in Hebei Spirit Oil Spill Area on the West Coast of Korea Four Years After the Accident

2022

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“…It shows a widespread distribution in the Mediterranean and European waters with great interest in its considerable value as a food source for human consumption, in addition to their ability to produce exquisite pearls (Theodorou et al 2019 ). Bivalve general health condition can be assessed by widely used applicable common tools such as allometric relationship and condition index (CI) reflecting the adaptation ability to environmental conditions (Lim et al 2014 ). In addition, measurement of CI could be used to address the stress condition of oyster exposed to heavy metal concentrations as suggested by Aguilar et al ( 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Hazardous impacts of heavy metal pollution on biometric and biochemical composition of pearl oyster Pinctada radiata from five sites along Alexandria coast, with reference to its potential health risk assessment

Abdel-Mohsen,

Ismail,

Moussa Moussa

2024

Environ Sci Pollut Res

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This study investigated the effect of heavy metals on the pearl oyster Pinctada radiata from 5 sites along the coast of Alexandria, with focus on its ecological health and potential risks to human consumption. Pollution results showed that Abu-Qir had the highest Cu and Cd values. Montaza and Eastern Harbor had the highest Fe and Pb values, respectively. Statistically, differences in metal concentrations among study sites were significant (p < 0.05). Non-carcinogenic risk (TTHQ) of tested metals and carcinogenic ones of Cd and Pb showed “high risk” on human health by consuming pearl oysters. Morphometric measurements and condition indices were studied to assess growth patterns and health in relation to heavy metals exposure. Key findings showed detectable declines in size and condition index in Eastern Harbor, whereas Abu-Qir recorded the highest values. This condition index performance presented Abu-Qir, Mammora, and Miami as ideal locations for spat collection and oyster rearing, potentially enhancing Egyptian pearl farming. Average values of spatial proximate contents of pearl oyster showed that it was rich in proteins (33.07–58.52%) with low fat content (1.39–1.87%) and carbohydrates (9.72–17.63%). Biochemical composition of pearl oyster demonstrated its high nutritional value which supported its promotion as a functional food for human consumption. The calorie content of pearl oyster was less than 2 Kcal, making this species an alternative source of healthy food to reduce obesity. Regression analysis indicated that Cu, Cd, and Pb had significant effect on 2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity, calories, vitamins, and pigment content of the collected oysters.

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The Annual Reproductive Cycle and Reproductive Effort of the Pacific Oyster Crassostrea gigas from a Tidal Flat in Incheon Bay on the West Coast of Korea

Lee,

Hong

et al. 2023

Ocean Sci. J.

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Condition index and hemocyte apoptosis as a health indicator for the Pacific oysters, Crassostrea gigas cultured in the western coastal waters of Korea

Cited by 5 publications

References 30 publications

Growth and Reproduction of the Pacific Oyster Crassostrea gigas Cultured on Tidal Flat in Hebei Spirit Oil Spill Area on the West Coast of Korea Four Years After the Accident

Growth and Reproduction of the Pacific Oyster Crassostrea gigas Cultured on Tidal Flat in Hebei Spirit Oil Spill Area on the West Coast of Korea Four Years After the Accident

Hazardous impacts of heavy metal pollution on biometric and biochemical composition of pearl oyster Pinctada radiata from five sites along Alexandria coast, with reference to its potential health risk assessment

The Annual Reproductive Cycle and Reproductive Effort of the Pacific Oyster Crassostrea gigas from a Tidal Flat in Incheon Bay on the West Coast of Korea

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