Plastic particles seriously threaten the life cycle of Pacific oysters

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Plastic particles pose a serious threat to marine life, and related research indicates that plastic particles entering the ocean are inextricably linked to the reproductive cycle of marine filter feeders.

Studies have found that pollutants known as plastic particles may endanger Pacific oysters and other marine bivalves. Recent research estimates that between 4 and 12 million tons of plastic enters the ocean each year. Unlike degradable organic waste, plastics in seawater can be broken down into micron-sized particles called plastic particles. Arnaud Huvet and colleagues noted that this marine pollutant has a number of sources, such as cosmetics, clothing and industrial processes, and they examined whether plastic particles in seawater affect the life cycle of Pacific oysters, which are one of many coastal ecosystems. The core component is also popular seafood.

The authors set up experimental water tanks to feed the oysters with microalgae and introduced plastic particles into half of the tank. Compared to the control group, oysters in contact with plastic particles easily ingested plastics similar in size to the phytoplankton consumed by oysters, resulting in fewer and smaller eggs and movements after 2 months of contact with the plastic particles. Sperm with reduced ability.

In addition, compared to the control group, oysters ingested with plastic particles produced 41% fewer offspring and lower growth rates of their offspring. According to the authors, plastic particles are a pollutant that people are increasingly worried about, and it can harm a range of marine filter feeders.

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