On the presence of the snapping shrimp, Alpheus

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2004). The penaeid shrimp, Melicertus hathor (Burkenroad, 1959) and the Indo-Pacific crab, Charybdis helleri (A. Milne-Edwards, 1867) were recently collected ...
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On the presence of the snapping shrimp, Alpheus rapacida (Decapoda: Caridea) on the Aegean Sea coast of Turkey Tahir Özcan*‡, A. Suat Ateş† and Tuncer Katağan* †

*Department of Hydrobiology, Fisheries Faculty, Ege University, 35100 Bornova-İzmir, Turkey. Department of Marine Biology, Fisheries Faculty, Çanakkale Onsekiz Mart University, TR-17100 Çanakkale, Turkey. ‡ Corresponding author, e-mail: [email protected], [email protected]

The Indo-West Pacific snapping shrimp, Alpheus rapacida was recently collected in Kuşadası Bay, located on the Aegean Sea coast of Turkey, on 8 October 2005. It is the first record of the species along the Aegean coast of Turkey.

Four specimens of the Indo-West Pacific snapping shrimp, Alpheus rapacida De Man, 1908 (total length between 17 mm and 11.3 mm) were collected by grab in the Kuşadası Bay, Turkey (37º51'50"N 27º13'28"E 37º50'25"N 27º12'04"E 37º50'22"N 27º13'11"E) on 8 October 2005, at a depth of 50–75 m on sandy–muddy bottom. The specimens are preserved in 4% formaldehyde and deposited at the Museum of Faculty of Fisheries, Ege University, Turkey (collection numbers ESFM-MAL/2005-4, ESFM-MAL/2005-5 and ESFM-MAL/2005-6). Four species of Erythrean alien alpheid shrimps occur on the Levantine coast of Turkey: Alpheus rapacida; A. migrans Lewinsohn & Holthuis, 1978; A. inopinatus Holthuis & Gottlieb, 1958 and A. Figure 1. Map of the study area showing the location of sampling site. audouini (Coutière, 1905). Among these, only A. rapacida and A. inopinatus are commonly found (www.ciesm.org/atlas, checked 2007). The first record of Alpheus rapacida in the Mediterranean Sea was from the coast of Israel (Lewinsohn & Holthuis, 1964). Subsequently it was recorded from the Levantine coast of Turkey (Koçataş, 1981; Koçataş et al., 2002; Koçataş & Katağan, 2003). Recently the species was listed from an unspecified location in ‘Hellenic waters’ (Pancucci-Papadopoulou et al., 2005).The species is much more common than the native A. Glaber (Olivi, 1792) on the muddy bottoms of the shallow shelf off Israel (Lewinsohn & Galil, 1982; Galil, 1986). Thirty-two species of alien decapods are known to occur along the Turkish coast (Özcan et al., 2006; Özcan et al., 2007), yet only 6 were recorded from the Aegean coast: Callinectes sapidus Rathbun, 1896 (Zaitsev & Öztürk, 2001), Macropthalmus graeffei A. MilneEdwards, 1873 (Katağan et al., 2004), Marsupenaeus japonicus Bate, 1888 (Zaitsev & Öztürk, 2001), Leptochela pugnax De Man, 1816 (Ateş, 2003) and Processa macrodactyla Holthuis, 1952 (Ateş et al., Figure 2. Alpheus rapacida De Man, 1908, male, TL: 17 mm, Kuşadası Bay, eastern Aegean Sea, Turkey (Ege-SFF), lateral view (photograph by 2004). The penaeid shrimp, Melicertus hathor (Burkenroad, 1959) T. Özcan). and the Indo-Pacific crab, Charybdis helleri (A. Milne-Edwards, 1867) were recently collected off Gökova Bay of the Turkish Aegean Sea (37º02'14"N 28º18'14"E), although these species are previously known only along the Levantine Sea coast of Turkey (Özcan et al., 2007). In conclusion, the present paper presents the first records of Alpheus rapacida from the Turkish coast of the Aegean Sea. The distribution area of lessepsian immigrant species in the Mediterranean extends to the southern Aegean Sea. This study has been financially supported by TUBITAK (Project no. 104Y065).

REFERENCES Ateş, A.S., 2003. Decapoda (Crustacea) species in the sublittoral zone of the Turkish Aegean Sea coast and their bioecological features. PhD thesis, University of Ege, İzmir, Turkey.



T. Özcan et al.

Alpheus rapacida on the Aegean Sea coast of Turkey

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