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Gokoglu, Mehmet
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First Record for the Histioteuthis reversa (Verrill, 1880), (Cephalopoda/Histioteuthidae) in the Gulf of Antalya/ Turkey USTUNER, Hatice; GOKOGLU, Mehmet
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 1 (April, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i1.6010

Abstract

A different squid species was caught with a trawling net at the coordinates of 36o 39'.431'' N; 31o 9.841''E and a depth of approximately 600-650 m in the Gulf of Antalya. In the identification of species, this squid species was determined to be Histioteuthis reversa (Verrill, 1880). This is the second record for the squid species in the Mediterranean Coast of Turkey and the first record in the Gulf of Antalya.Keywords: Gulf of Antalya; Histioteuthis reversa; Mediterranean; Record
First record of Spinetail Devil Ray, Mobula japanica (Müller & Henle 1841) from the Gulf of Antalya Gokoglu, Mehmet; Teker, Serkan
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 2 (August, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i2.6145

Abstract

On 11 October 2019, one specimen of spinetail devilray Mobula japanica (Müller and Henle, 1841) was caught inadvertently by a commercial fisherman at a depth of approximately 25 m off the Gulf of Antalya. One specimen was examined in detail. M. japanica was recorded for the first time in the Gulf of Antalya.Keywords: Mobula japanica, spinetail devil ray, by-catch, Gulf of Antalya
Second record of the Blacktip Grouper Epinephelus fasciatus (Teleostei: Serranidae) in the Mediterranean Sea Gokoglu, Mehmet; Bicer, Erkan
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 2 (August, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i2.6544

Abstract

A red grouper was caught with a spear gun at depths of 8-10 m at the Alanya Harbor Breakwater. The purpose of this study is to determine this species, which is seen for the first time in the Mediterranean coasts of Turkey, and to add it to the Gulf of Antalya fish fauna. In the species identification, it was determined that this fish was Epinephelus fasciatus. E. fasciatus caught in Alanya Harbor is the second record for the Mediterranean and the first record for the Turkish coast. This fish became the second lessepsian Serranid species detected in the Gulf of Antalya, and the number of Serranid species with high economic value increased to nine with this species.
The last observation of the long-spined exotic Sea Urchin (Diadema setosum) in the Gulf of Antalya Gokoglu, Mehmet; Çağıltay, Ferhat; Gürdal, Mustafa; Yıldız, Alper
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 10: No. 3 (December, 2023)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v10i3.12957

Abstract

Diadema setosum, a Red Sea migrant, was first identified on the shores of the KaÅŸ Peninsula in the Mediterranean. Approximately a year after this observation, the same species was reported for the second time from Konyaaltı Beach in Antalya Bay. This sea urchin rapidly multiplied and expanded its distribution along the coasts of the Mediterranean and Aegean Seas, reaching as far as the Marmara Sea. Some individuals of this sea urchin, which expanded distribution to coastal areas posing a risk to swimmers, were observed to start dying in the summer months of 2022. Scuba diving surveys were conducted in five different areas with rocky and stony seabed structures in the Gulf of Antalya during the winter season (Cliffs, Konyaaltı Beach, Sıçan Island surroundings, Çaltıcak region, and Kemer Ağva Cape), and it was determined that 99% of the D. setosum population had died in February and March. No living individuals were encountered during scuba diving surveys conducted in the same stations in April and May. In conclusion; mass mortalities have occurred in the D. setosum population in the rocky areas of the Gulf of Antalya, including the cliffs, Konyaaltı beach, Sıçan island surroundings, Caltıcak region, and Kemer Ağva Cape. This study presents the first report on matter.Keywords: Diadema setosum; Gulf of Antalya; Sea urchin.
Some predators of the jellyfish (Rhopilema nomadica) entering the Gulf of Antalya Gokoglu, Mehmet; Çağıltay, Ferhat; Yıldız, Alper
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.14889

Abstract

Rhopilema nomadica, which was introduced to the Mediterranean ecosystem later, is a jellyfish species originating from the Indian Ocean. This jellyfish is distributed along the coasts of Pakistan, Mozambique and the Red Sea. R. nomadica, which is very abundant in Israel, Lebanon, Syria and the Gulf of Iskenderun, drifts westward from the open waters of the Gulf of Antalya between March and May with the main currents of the Mediterranean Some of these jellyfish enter the Gulf of Antalya and cause fear and anxiety for swimmers in the sea. During our Scuba dives to the world-famous cliffs of Antalya, it was observed that Bearded fire worm (Hermodice carunculata) gathered on the jellyfish at the bottom, preventing them from swimming by creating weight and consuming them as food. Again, within the scope of this study, it was determined that some jellyfish at the bottom were consumed by crabs (Charybdis hellerii). Photographs and video recordings of the interactions of these living creatures were taken. In this study, the interaction between jellyfish and their predators is presented. Keywords: Charybdis helleri; Gulf of Antalya; Hermodice carunculate; Rhopilema nomadica
Co-Authors Ãœstüner, Hatice Çağıltay, Ferhat Biçer, Erkan Biçer, Erkan Çağıltay, Ferhat Gökoğlu, Kemal Gürdal, Mustafa Korun, Jale Tanrıverdi, Raziye Teker, Serkan USTUNER, Hatice Yıldız, Alper Yılmaz, Mesut Yıldız, Alper