Recovery of wild Pacific oyster, Crassostrea gigas in terms of reproduction and gametogenesis two-years after the Hebei Spirit Oil Spill Accident off the West Coast of Korea

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

“…Although the low PAH levels in water and sediment were too low to be lethal to oysters, long-term sub-lethal effects on growth and reproduction were unknown. Mondol et al (2015) demonstrated the recovery of the wild Pacific oyster, C. gigas encrusting on the rocky intertidal shore in the oil-contaminated area in terms of growth. They also examined the reproductive performance of the wild oysters by monitoring the annual gametogenesis, reproductive effort, and energy storage approximately two years after the HSOS accident.…”

“…Although most of the spilled oil in the coastal Taean was removed one to two months after the accident due to intensive clean-up activities (Kim et al, 2010;Kim et al, 2013), the survived Pacific oysters exposed to the crude oil demonstrated a slow somatic tissue growth and retarded gametogenesis (Lee, 2010;Mondol et al, 2015). Due to the detrimental effects of the petroleum hydrocarbons, a reduction in immune competence of the Pacific oyster was also reported a year after the accident (Donaghy et al, 2010).…”

“…Two years after HSOS, polycyclic aromatic hydrocarbons (PAHs) in the water column and oyster tissues declined to the level before the accident [Ministry of Land, Transport and Maritime Affairs, Republic of Korea (MLTM), 2009; Ministry of Land, Transport and Maritime Affairs, Republic of Korea (MLTM), 2010; Kim et al, 2013]. According to Mondol et al (2015), wild Pacific oysters in the HSOS area showed substantially higher somatic tissue growth and reproductive performance than the control oysters in the none-oil-spill area two years after the oil spill accident, suggesting that the oysters successfully recovered from the adverse effects of the oil contamination.…”

Uma ferramenta computacional para simulação de espalhamento de fluidos baseada em autômatos celulares bidimensionais estocásticos

“…Estudos relacionados ao espalhamento de fluidos auxiliam principalmente as indústrias a quantificarem os níveis de espalhamento de fluidos tóxicos sobre uma determinada região, bem como o estudo de técnicas de remediação [Lehikoinen et al 2015]. No caso do petróleo ou de outro rejeito tóxico, o espalhamento pode ocorrer através da elevação natural ou artificial devidoà perfuração de poços artesianos [Mondol et al 2015]. Assim, a excessiva extração desses materiais causam sérios prejuízos naturais na presença de um acidente, afetando, principalmente, a qualidade daágua, causando a degradação do solo, prejudicando a vida dos animais.…”

Coastal seas in a changing world: Anthropogenic impact and environmental responses

“…They found that the structure and oxidative biomarkers (such as catalase, superoxide dismutase, glutathione peroxidase) indicated that P. oceanica in the bay was generally in good condition, but that humans have affected the area closest to the harbor and the beach. Mondol et al (2015) compared the physiological conditions of samples of an oyster species, Crassostrea gigas -which is an economically valuable and widely cultured marine bivalve -collected from a contaminated location following an oil spill, along with samples collected from a non-contaminated location. Based on the evidence, the samples from the contaminated location exhibited better biological performance than those from the non-contaminated location.…”