Perna viridis

Perna viridis, also known as the Asian green mussel, is a species of bivalve belonging to the family Mytilidae. This marine mussel is native to the Asia-Pacific region but has been introduced to other areas worldwide, often becoming an invasive species.

Description

The Perna viridis is a large mussel, up to 165 mm in length, with a smooth and elongate shell. The shell's outer surface is covered with a periostracum which is usually green, but may also be brown or black. The inner surface is smooth and bluish to purplish-black.

Distribution and habitat

The Perna viridis is native to the coasts of the Asia-Pacific region, including the Philippines, Thailand, Malaysia, and the northern coasts of Australia. It has been introduced to various other parts of the world, including the Caribbean, the Gulf of Mexico, and the Atlantic coast of North America. The species typically inhabits intertidal and subtidal zones, attaching itself to hard substrates using byssal threads.

Ecology

Perna viridis is a filter feeder, consuming phytoplankton and organic detritus. It is known to reproduce rapidly and can form dense colonies, outcompeting native species for space and resources. This, along with its ability to tolerate a wide range of environmental conditions, has contributed to its success as an invasive species.

Human use

In its native range, Perna viridis is harvested for food and is considered a delicacy in many Asian cuisines. However, in areas where it has been introduced, it is often viewed as a pest due to its impacts on native ecosystems and aquaculture operations.

See also

• Invasive species
• Bivalvia
• Mytilidae

References

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