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Abstract
To date, three alien scyphozoan species were reported from the Eastern Mediterranean, but only one, Rhopilema nomadica, was reported from the Turkish coast. Recently, a second alien scyphozoan, Cassiopea andromeda, was collected on 20 July 2005 in Iskenderun Bay, SE Turkey.
Highlights
Cassiopea andromeda (Forsskål, 1775) is the first Erythrean scyphomedusan species reported from the Mediterranean following the opening of the Suez Canal
Two of the six individuals found which have a mean umbrella length of 5 cm were taken for further investigation in the laboratory, and were determined as C. andromeda (Figure 1) according to the identification key given by Galil et al 1990
Cassiopea andromeda is widely distributed in the Indo-Pacific where it occurs in shallow lagoons, intertidal sand flats and mangroves The specimens found in the canal were collected at depth of 70 cm, on a muddy sandy bottom, where the temperature at the time was 34°C, salinity 38.51 psu, dissolved oxygen 5.4 mg/l, and pH 8.02, and the mean water temperature is 23°C in winter and 36°C in summer
Summary
Cassiopea andromeda (Forsskål, 1775) is the first Erythrean scyphomedusan species reported from the Mediterranean following the opening of the Suez Canal. It had been collected in the Suez Canal in 1886 (Galil et al 1990), and soon after from Cyprus (Maas 1903).
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