Invasion
Invasion Description
Caspian Sea (Aladin et al. 2002; Grigorovich et al. 2003)
Geographic Extent
Baku/Azerbaijan/Caspian Sea (Kasymov 1988); Turkmenistan/Krasnovodskiy Bay (Kasymov 1975- Biological Abstracts); Dagestan/Russia/Kizlarskiy Bay (Bagirov et al. 1975- Biological Abstracts); Turkmenistan/Turkmen Bay (Kasymov 1974- Biological Abstracts); 45 km north of Makhachkala, the capital of Dagestan/Russia/Caspian Sea (Riedel et al. 2006, overgrowing the bivalve Didacna sp., 43 23 N, 47 29 E)
Vectors
| Level | Vector |
|---|---|
| Alternate | Canal |
| Alternate | Hull Fouling |
| Alternate | Ballast Water |
Regional Impacts
| Ecological Impact | Competition | |
| 'There is a competition between A. improvisus and A. eburneus, as a result of that A. improvisus lives on the hulls of ships and hydrotechnical constructions, but A. eburneus inhabits bottom hard substrates.' (Zaitsev and Ozturk 2001). | ||
| Economic Impact | Industry | |
| 'Amphibalanus increases the corrosion of metallic constructions in the sea including oil pipes.' (Zaitsev and Ozturk 2001). | ||
| Economic Impact | Fisheries | |
| 'By covering fish nets Amphibalanus diminishes their catchability and floatation.' (Zaitsev and Ozturk 2001). | ||
| Economic Impact | Shipping/Boating | |
| 'Mass fouling of Amphibalanus on piers considerably increases wave loading.'(Zaitsev and Ozturk 2001). | ||
| Ecological Impact | Habitat Change | |
| Fouling by Amphibalanus improvisus reduces the growth rate of the cockle Cerastoderma glaucum in the souther Caspian Sea. Another, deeper-burrowing bivalve, Adacna vitrea was not colonized by A. improvisus (Mirzajan et al. 2016). | ||