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Occurrence of the Blue Button Porpita Porpita (Linnaeus, 1758) in the Iskenderun Bay, Northeastern Mediterranean Coast of Turkey

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Occurrence of the Blue Button Porpita Porpita (Linnaeus, 1758) in the Iskenderun Bay, Northeastern Mediterranean Coast of Turkey ISSN: 0001-5113 ACTA ADRIAT., SHORT COMMUNICATION AADRAY 61 (2): 185 - 190, 2020 Occurrence of the Blue Button Porpita porpita (Linnaeus, 1758) in the Iskenderun Bay, Northeastern Mediterranean Coast of Turkey Mevlüt GÜRLEK1, Ali UYAN1*, Servet A. DOĞDU1, Serpil KARAN1, Ahmet GÖKÇEN2 and Cemal TURAN1 1Molecular Ecology and Fisheries Genetics Laboratory, Marine Science Department, Faculty of Marine Science and Technology, Iskenderun Technical University, 31220 Iskenderun, Hatay, Turkey 2Department of Electrical and Electronics Engineering, Faculty of Electrical and Electronics, Iskenderun Technical University, 31220 Iskenderun, Hatay, Turkey *Corresponding author, e-mail: [email protected] The blue button Porpita porpita (Linnaeus, 1758) was observed for the first time in July 2018 in the Iskenderun Bay, Northeastern Mediterranean coast of Turkey. This is the third record of this species for Turkish marine waters, while it is the first record for Iskenderun bay. The presence of P. porpita in the northeastern Mediterranean coast of Turkey shows its extension from northwestern Mediterranean coast (Antalya Bay) of Turkey. Key words: Porpita porpita, Hydrozoan, Iskenderun Bay, Turkish Marine Waters INTRODUCTION The blue button Porpita porpita (LIN- NAEUS, 1758) is a colonial Hydrozoa belong- During the last two decades in the eastern ing to the Porpitidae family. The species was Mediterranean coasts of Turkey, a large number defined by LINNAEUS (1758) as Medusa porpita. of hydrozoan species as non-indigenous have Although numerous nominal species under the been reported (TURAN et al., 2011; GÜRLEK et al., Porpita genus have been proposed, the overall 2013; ERGÜDEN et al., 2014; GÜLŞAHIN et al., 2016). have been now gathered under one roof now Porpitidae family (chondrophores) is rep- as synonyms of Porpita porpita (CALDER, 1988; resented by two genera Porpita and Velella, SCHUCHERT, 2013). both of which are found in the Mediterranean Blue button is a marine organism consist- Sea (GUERRERO et al., 2016; FURFARO et al., 2017; ing of a colony of hydroids. These hydroids SAYGIN, 2017; WORMS, 2018). The genus Porpita live on the ocean surface, are sometimes blown has only one species Porpita porpita (WORMS, into shore and thousands of them can be seen. 2018). Blue button feeds on plankton and other small 186 ACTA ADRIATICA, 61 (2): 185 - 190, 2020 organisms, whereas they are typically eaten by sea slugs and violet sea snails. Blue buttons are hermaphrodites and have reproductive polyps that release eggs and sperms into the water. The eggs are fertilized and turn into larvae, which develop into individual polyps step by step. Blue button is actually colonies of different types of polyps; these colonies form when a polyp divides to form new types of polyps. The polyps are specialized for different functions, such as reproduction, feeding, and defense (PANDYA et al., 2013). P. porpita has an unnoticeable sting that do not pose health risks for humans (GERSHWIN et al., 2010), therefore, the blue button is almost harmless since its tentacles might only give rise Fig. 2. Porpita porpita from Iskenderun Bay, Northeastern to some irritation for human skin. Recently, it Mediterranean has been found to contain bioactive compounds having antimicrobial effect (FREDRICK & RAVI- this species was reported as second time from CHANDRAN, 2010). the Antalya Bay (Gazipaşa coast) on 14 July P. porpita is found in the Atlantic and Indo- 2016 by SAYGIN (2017). Pacific Oceans (MEINKOTH, 1981; GUL & GRAVILI, The present study reports the occurrence of 2014; CHOWDHURY et al., 2016). In the Mediterra- P. porpita in the Iskenderun Bay, from the north- nean, P. porpita was reported from the eastern to eastern Mediterranean coast of Turkey. the western coasts, including the Syrian coasts (MAMISH et al., 2019), the Ionian and Adriatic Sea MATERIAL AND METHODS (LILLO et al., 2019), the Maltese coasts (DEIDUN, 2010), the Tyrrhenian Sea (FURFARO et al., 2017), A single specimen of P. porpita was observed the Corsican Sea (KOUSTENI et al., 2019) and the which came ashore, it was put in a bucket and Balearic Sea (GUERRERO et al., 2016). In Turkish photographed in 19 July 2018 from the Iskend- marine waters, P. porpita was recorded for the erun Bay, northeastern Mediterranean coast of first time from Lycia (today’s Teke Pennisula) in Turkey (36° 49’ 754” N, 35° 96’ 953” E), (Fig. February 1842 (FORBES, 1844) in the western 1). The disc length of single specimen was 8 mm Mediterranean coast of Turkey. Subsequently, and the length with tentacles was 25 mm (Fig. Fig. 1. Sampling location ( ) of Porpita porpita from the Iskenderun Bay in the present study (3). ●; previous records 1 (Forbes, 1844); 2 (Saygin, 2017) GÜRLEK et al: Occurrence of the Blue Button Porpita porpita (Linnaeus, 1758) in the Iskenderun Bay,... 187 2). The presence of a disc in the middle of P. REFERENCES porpita helps to float in the water. The blue but- ton ingests prey and its ingredients along with BIANCHI, C.N. 2007. Biodiversity issues for the sea water by mouth. 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Porpita porpita (Blue button) from Pulicat 2016.
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