Individual specimens of the invasive mussel Mytilus galloprovinciali Lamarck, 1819 (Bivalvia: Mytilidae), a new species for the Caspian benthos, were identified on the Daghestan coast of the Middle Caspian in autumn 2024 near the mouth of the Samur River and in the area of the 7th Karaman. In 2023, this invasive species was discovered on the border of the Northern and Middle Caspian, in the Kazakhstan Bay, as well as in the Azerbaijan sector of the Caspian Sea. Its penetration into the Caspian Sea from the Azov-Black Sea basin through the northern invasion corridor is considered most probable. Mussels are active biofilters, which could contribute to the self-purification of Caspian Sea waters from pollution. The mollusk is a food source for benthophagous fish, and its naturalization could enhance the resource potential of the aquatic bodies off the Daghestan coast. However, the appearance of a new fouling settler could also have a negative impact - increasing the biomass of fouling on ship hulls, hydraulic structures, and equipment of the Caspian oil industry.
Pages: 17 - 20
Date: 30.08.2025