Occurrence of the Young Thresher Shark Alopias superciliosus Lowe, 1841 (Lamniformes: Alopiidae) in the Northeastern Mediterranean Sea

Yıl 2020, , 28 - 31, 29.06.2020

Deniz Ayas , Hasan Deniz Akbora , Burak Ali Çiçek

https://doi.org/10.31594/commagene.713381

Öz

The Bigeye Thresher Shark Alopias superciliosus Lowe, 1841 is one of the largest shark species found in the Pacific, Atlantic, and Indian oceans. They also have started to be seen in the Mediterranean Sea since the 1980s. The presence of two different species of Thresher sharks in Turkish waters is known, which are A. vulpinus and A. superciliosus. Thresher sharks can easily be distinguished from other shark species with their big tails. A juvenile female specimen of A. superciliosus with a total length of 240 cm was caught incidentally in Mersin Bay in January 2020. Essential measurements of the fish were fulfilled and the specimen was deposited in the Museum of the Systematic, Faculty of Fisheries, Mersin University (catalog number: MEUFC-20-11-127). This study is the first record of A. superciliosus in Mersin Bay.

Anahtar Kelimeler

Shark conservation, juvenile fish, first record, incidental capture, threatened species

Destekleyen Kurum

Mersin Üniversitesi

Proje Numarası

2017-2-AP2-2353

Teşekkür

This study was supported by the Research Fund of Mersin University in Turkey with Project Number: 2017-2-AP2-2353.

Kuzeydoğu Akdeniz'de Yavru Sapan Köpekbalığı’nın Alopias superciliosus Lowe, 1841 (Lamniformes: Alopiidae) Bulunuşu

Öz

Sapan Köpekbalığı (Alopias superciliosus Lowe, 1841), Pasifik, Atlantik ve Hint Okyanusunda büyük köpek balığı türlerinden biridir. 1980’lerden itibaren Akdeniz’de de görülmeye başlamışlardır. Türk sularında A. vulpinus ve A. superciliosus türlerinin görüldüğü bilinmektedir. Sapan Köpekbalıkları, büyük kuyrukları ile diğer köpekbalıklarından kolaylıkla ayırt edilebilirler. Toplam uzunluğu 240 cm olan bir adet yavru-dişi A. superciliosus örneği Ocak 2020'de Mersin Körfezi'nde tesadüfen yakalanmıştır. Örneğin gerekli ölçümleri tamamlandıktan sonra Mersin Üniversitesi, Su Ürünleri Fakültesi, Sistematik Müzesi’nde saklanmıştır (katalog numarası: MEUFC-20-11-127). Bu çalışma Mersin Körfezi’nde A. superciliosus için ilk kayıttır.

Anahtar Kelimeler

Köpekbalığı koruma, yavru balık, ilk kayıt, tesadüfi yakalama, tehdit altındaki türler

Proje Numarası

2017-2-AP2-2353

Kaynakça

• Ayas, D., Çiftçi, N., & Akbora, H.D. (2019). New Record of Carcharhinus brevipinna (Müller & Henle, 1839) from Mersin Bay, the Northeastern Mediterranean. Natural and Engineering Sciences, 4, 268–275. https://doi.org/https://doi.org/10.28978/nesciences.646334
• Ayas, D., Ciftci, N., Yalcin, E., Akbora, H.D., Bakan, M., & Ergüden, D. (2020a). First record of the big nose shark, Carcharhinus altimus (Springer, 1950) from Mersin bay. International Journal of Fisheries and Aquatic Studies, 8(2), 132–136.
• Ayas, D., Erguden, D., Erguden, S.A., & Akbora, H.D. (2020b). Occurrence of the Pregnant and Young Thresher Shark Alopias vulpinus (Bonnaterre, 1788) (Lamniformes: Alopiidae) in the Northeastern Mediterranean Sea. International Journal of Zoological Research, 16, 20–25. https://doi.org/10.3923/ijzr.2020.20.25
• Carvalho, J., Coelho, R., Mejuto, J., Cortés, E., Domingo, A., Yokawa, K., … Santos, M.N. (2015). Pan-Atlantic distribution patterns and reproductive biology of the bigeye thresher, Alopias superciliosus. Reviews in Fish Biology and Fisheries, 25, 551–568, https://doi.org/10.1007/s11160-015-9389-7
• Compagno, L.J.V. (2001). Sharks of the World. An annotated and illustrated catalogue of shark species known to date. Volume 2. Bullhead, mackerel and carpet sharks (Heterodontiformes, Lamniformes and Orectolobiformes). FAO Species Catalogue for Fishery Purposes.
• Compagno, L.J. V., (1984). FAO species catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of sharks species known to date. Part 1. Hexanchiformes to Lamniformes. FAO Fisheries Synopsis. Roma, Italy, 249 pp.
• Corsini-Foka, M., & Sioulas, A., (2009). On two old specimens of Alopias superciliosus (Chondrichthyes: Alopiidae) from the Aegean waters. Marine Biodiversity Records, 2, e72. https://doi.org/10.1017/s175526720900044x
• Farrag, M.M. (2017). New record of the bigeye thresher shark, Alopias superciliosus Lowe, 1841 (Family : Alopiidae) from the Eastern Mediterranean Sea. International Journal of Fisheries and Aquatic Studies, 5, 316–318.
• Froese, R., & Pauly, D. (2019). Alopias superciliosus Lowe, 1841 Bigeye thresher. Retrieved from https://www.fishbase.se/summary/Alopias-superciliosus.html
• Gökoğlu, M., Teker, S., & Julian, D. (2017). First report of thresher sharks (Alopiidae) in the Gulf of Antalya. Iranian Journal of Fisheries Sciences, 16, 1108–1113.
• Kabasakal, H., Dalyan, C., & Yurtsever, A. (2011). Additional Records of the Bigeye Thresher Shark Alopias Superciliosus (Lowe, 1839) (Chondrichthyes: Lamniformes: Alopiidae) From Turkish Waters. Annales, Series Historia Naturalis, 21, 143-148.
• Kabasakal, H., & Karhan, S.Ü. (2008). On the occurrence of the bigeye thresher shark, Alopias superciliosus (Chondrichthyes: Alopiidae), in Turkish waters. Marine Biodiversity Records, 1, e69. https://doi.org/10.1017/s1755267207007452
• Kabasakal, H., Karman, S.Ü., & Sakinan, S. (2017). Review of the distribution of large sharks in the seas of Turkey (Eastern Mediterranean). Cahiers de Biologie Marine, 58, 219-228. https://doi.org/10.21411/CBM.A.96D9F948
• Preti, A., Kohin, S., Dewar, H., & Ramon, D. (2008). Feeding habits of the bigeye thresher shark (Alopias superciliosus) sampled from the California-based drift gillnet fishery. California Cooperative Oceanic Fisheries Investigations Report, 49, 202-211.
• Walls, R.H.L. & Soldo, A. (2016). Alopias superciliosus. IUCN Red List Threatened Species. Retrieved from https://www.iucnredlist.org/species/161696/16527729