First reliable record of Mytilopsis sallei (Récluz, 1849) (Bivalvia: Dreissenidae) in Vietnam
Konstantin A. Lutaenko, Larisa A. Prozorova, Ngo Xuan Quang and Viktor V. Bogatov
A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences (NSCMB FEB RAS), Vladivostok 690041, Russia Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the
The invasive Caribbean false mussel, Mytilopsis sallei (Récluz, 1849) (Dreissenidae), established in Asia during the 20th and 21st centuries, is recorded for the first time in southern Vietnam in brackish-water Ba Tai Lake (Kien Giang Province). Colonies of this species were found in 2017, mollusks were attached to stones on the muddy bottom, at a depth of 0.3-0.7 m and salinity of 15-20‰, and water temperature of up to 35-40°C. M. sallei was not registered in Baс Lieu Province (Mekong Delta), in mangroves of the Red River Delta and Con Dao Archipelago during recent surveys (2017-2019) as well not known in regional literature; closest localities are southern Thailand and Hainan Island.
  
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