The species is extensively commercially fished and grown in the aquaculture industry because of its large size, marketability, and ease of production (Pauley et al., 1988: 8). It has been introduced in foreign waters as a replacement for collapsed fisheries in the past. These introductions have had a negative effect though. C. gigas is now considered a major invasive species across the globe. By blanketing hard substrates, the species can overgrow the native species of sessile invertebrates, algae, and even some mussels (Padilla, 2010). Eutrophication (excess addition of nutrients) and habitat destruction have been seen in places invaded by the oyster (Nehring, 2006: 7).
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