First record of leatherback turtle Dermochelys coriacea in the İstanbul Strait, Türkiye

First record of leatherback turtle Dermochelys coriacea in the İstanbul Strait, Türkiye

Oğuz Türkozan, Arda M. Tonay

ORCID IDs: O.T. 0000-0001-6889-7908; A.M.T. 0000-0003-2718-9328

Faculty of Science, Aydın Adnan Menderes University, 09010, Efeler, Aydın, TÜRKİYE
Faculty of Aquatic Sciences, İstanbul University, Onaltı Mart Şehitleri Cad. No: 2, 34470, Fatih, İstanbul, TÜRKİYE
Turkish Marine Research Foundation (TUDAV), P.O. Box: 10, Beykoz, İstanbul, TÜRKİYE

Abstract

This short communication reports an observation of a leatherback turtle Dermochelys coriacea in the İstanbul Strait (Bosphorus), Marmara Sea, on 9 July 2024. Leatherback turtles are occasionally reported in the Aegean and Mediterranean Seas of Türkiye. This is the northernmost record of the leatherback turtle in the Mediterranean Basin. As the importance of citizen science becomes more apparent and public awareness grows, access to observational information such as this will increase through digital technologies.

Keywords: Sea turtle, distribution, Marmara Sea, Bosphorus

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References

Anadolu Agency (2021) Leatherback sea turtle spotted in Göcek. Available at: https://www.aa.com.tr/tr/vg/video-galeri/gocekte-deri-sirtli-deniz-kaplumbagasi-goruntulendi (in Turkish) (accessed 16 Jul 2024)

ACCOBAMS (2021) Estimates of abundance and distribution of cetaceans, marine mega-fauna and marine litter in the Mediterranean Sea from 2018-2019 surveys, (eds., Panigada, S., Boisseau, O., Canadas, A., Lambert, C., Laran, S., McLanaghan, R., Moscrop, A.). ACCOBAMS – ACCOBAMS Survey Initiative Project, Monaco.

Arslan, G., Ertürk, A., Candan, O. (2023) Predicting the distribution of green turtle nesting sites over the Mediterranean with outcoming climate driven changes. Journal for Nature Conservation 71: 126320.

Baran, İ., Durmuş, S.H., Türkozan, O., (1998) Erster nachweis der Lederschildkröte, Dermochelys coriacea (Linnaeus, 1766) (Testudines: Dermochelyidae) aus Türkischen Gewassern. Herpetofauna 20(112): 34.

Başkale, E., Sözbilen, D., Katılmış, Y., Azmaz, M., Uzuner, M., Sürücü, B., Kaska, Y. (2018) The sporadic nesting sites of loggerhead and green turtles on western Anatolian coasts. In: The 38th Annual Symposium on Sea Turtle Biology and Conversation. 18-23 February 2018 Kobe International Conference Center, Kobe, Japan.

Boero, F. (2013) Review of jellyfish blooms in the Mediterranean and Black Sea. General Fisheries Commission for the Mediterranean. Studies and Reviews, (92), Rome, FAO 2013. 53 p.

Bolten, A.B. (2003) Variation in Sea Turtle Life History Patterns: Neritic vs Oceanic Developmental Stages in the Biology of Sea Turtles, (eds., Lutz, P.L., Musick, J.A., Wyneken, J.) CRC Press, Vol 2, Boca Raton, pp. 243-257.

Candan, O., Canbolat, A.F. (2018) New record of a Leatherback (Dermochelys coriacea) stranding in Turkey. Biharean Biologist 12(1): 56-57 e172301.

Cardona, L., San Martín, J., Benito, L., Tomás, J., Abella, E., Eymar, J., Aguilera, M., Esteban, J. A., Tarragó A., Marco, A. (2023) Global warming facilitates the nesting of the loggerhead turtle on the Mediterranean coast of Spain. Animal Conservation 26(3): 365-380.

Casale, P., Nicolosi, P., Freggi, D., Turchetto, M., Argano, R. (2003) Leatherback turtles (Dermochelys coriacea) in Italy and in the Mediterranean basin. Herpetological Journal 13(3): 135-140.

Ergene, S., Uçar, A.H. (2017) A leatherback sea turtle entangled in fishing net in Mersin Bay, Mediterranean Sea, Turkey. Marine Turtle Newsletter 153: 5-6.

Hays, G.C., Chivers, W.J., Laloë, J.O., Sheppard, C., Esteban, N. (2021) Impact of marine heatwaves for sea turtle nest temperatures. Biology Letters 17(5): 20210038.

Hochscheid, S., Maffucci, F., Abella, E., Bradai, M.N., Camedda, A., Carreras, C., Claro, F., Andrea de Lucia, G., Jribi, I., Mancusi, C., Marco, A., Marrone, N., Papetti, L., Revuelta, O., Urso, S., Tomás, J. (2022) Nesting range expansion of loggerhead turtles in the Mediterranean: Phenology, spatial distribution, and conservation implications. Global Ecology and Conservation 38: e02194.

Isinibilir, M., Yilmaz, I.N., Demirel, N. (2015) New records of jellyfish species in the Marmara Sea. Italian Journal of Zoology 82(3): 425-429.

Isinibilir, M., Yilmaz, I.N., Piraino, S. (2010) New contributions to the jellyfish fauna of the Marmara Sea. Italian Journal of Zoology 77(2): 179-185.

İşinibilir, M., Yüksel, E., Türkeri, E., Doğan, O., Karakulak, F.S., Uzer, U., Dalyan, C., Furfaro, G., Piraino, S. (2022) New additions to the jellyfish fauna of the Sea of Marmara. Aquatic Sciences and Engineering 37(1): 53-57.

Mancino, C., Hochscheid, S., Maiorano, L. (2023) Increase of nesting habitat suitability for green turtles in a warming Mediterranean Sea. Scientific Reports 13(1): 19906.

Margaritoulis, D. (1986) Captures and strandings of the leatherback sea turtle, Dermochelys coriacea, in Greece (1982-1984). Journal of Herpetology 20: 471-474.

Oğuz, T., Öztürk, B. (2011) Mechanisms impeding natural Mediterranization process of Black Sea fauna. Journal of the Black Sea/Mediterranean Environment 17(3): 234-253.

Oruç, A. (2001) Trawl fisheries in the eastern Mediterranean and their impact on marine turtles. Zoology in the Middle East 24:1 119-125.

Özdilek, Ş.Y., Sönmez, B., Sert, M. (2018) Stranded sea turtle records between 2010 and 2017 in northern Aegean and Sea of Marmara. Regional Studies in Marine Science 24: 17-22.

Öztürk, B., Tonay, A.M., Akkaya, A., Öztürk, A.A., Dede, A. (2011) Stranding of a green turtle, Chelonia mydas (Linnaeus, 1758), in the Turkish Black Sea. Zoology in the Middle East 52: 115-117.

Öztürk, İ.D., Sümen, S.G. (2020) Unusual mass mortality of jellyfish Rhizostoma pulmo on the coast of the Sea of Marmara in December 2020. Journal of the Black Sea/Mediterranean Environment 26(3): 343-351.

Purcell, J.E., Uye, S.I., Lo, W.T. (2007) Anthropogenic causes of jellyfish blooms and their direct consequences for humans: a review. Marine Ecology Progress Series 350: 153-174.

Roden, S.E., Stewart, K.R., James, M.C., Dodge, K.L., Dell’Amico, F., Dutton, P.H. (2017) Genetic fingerprinting reveals natal origins of male leatherback turtles encountered in the Atlantic Ocean and Mediterranean Sea. Marine Biology 164: 1-9.

Santidrián Tomillo, P., Spotila, J.R. (2020) Temperature‐dependent sex determination in sea turtles in the context of climate change: uncovering the adaptive significance. BioEssays 42(11): 2000146.

Sönmez, B., Sammy, D., Yalçın-Özdilek, Ş., Gönenler, Ö.A., Açıkbaş, U., Ergün, Y., Kaska, Y. (2008) A stranded leatherback sea turtle in the Northeastern Mediterranean, Hatay, Turkey. Marine Turtle Newsletter 119: 12-13.

Taşkavak, E., Akçınar, S.C., İnanlı, Ç. (2015) Rare occurrence of the Leatherback sea turtle, Dermochelys coriacea, in İzmir Bay, Aegean Sea, Turkey. Ege Journal of Fisheries and Aquatic Sciences 32(1): 51-52.

The Northwest Atlantic Leatherback Working Group (2019) Dermochelys coriacea (Northwest Atlantic Ocean subpopulation) (errata version published in 2020). The IUCN Red List of Threatened Species 2019: e.T46967827A184748440. https://dx.doi.org/10.2305/IUCN.UK.2019-2.RLTS.T46967827A184748440.en. (accessed 16 Jul 2024).

Tokat, E., Beşiktepe, Ş. (2023) Climatology and variability of sea surface temperature in the region of Turkish Straits System, 1982-2021. EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-15096. doi: https://doi.org/10.5194/egusphere-egu23-15096.

Tonay, A.M., Oruç, A. (2016) Sea turtle records in the Sea of Marmara. In: The Sea of Marmara Marine Biodiversity, Fisheries, Conservation and Governance (eds., Özsoy, E., Çağatay, M.N., Balkıs, Ne., Balkıs, Nu., Öztürk, B.) Turkish Marine Research Foundation, Publication no: 42, İstanbul, pp.843-848.

Türkozan, O., Kaska, Y. (2010) Turkey. In: Sea Turtles in the Mediterranean: Distribution, Threats and Conservation Priorities (eds., Casale, P., Margaritoulis, D.) IUCN/SSC Marine Turtle Specialist Group, Gland, Switzerland, pp. 257-293.

Wallace, B.P., Tiwari, M., Girondot, M. (2013) Dermochelys coriacea. The IUCN Red List of Threatened Species 2013: e.T6494A43526147. https://dx.doi.org/10.2305/IUCN.UK.2013-2.RLTS.T6494A43526147.en. (accessed 10 Jul 2024)

Zaitsev, Yu., Mamaev, V. (1997) Marine Biological Diversity in the Black Sea: A Study of Change and Decline. Black Sea Environment Series, Vol. 3 NY: United Nations Publications.

Zinenko, O., Vishnyakova, K.A., Stoyanov, L., Gol’din, P.E. (2021) The northernmost record of the loggerhead sea turtle, Caretta caretta (Testudines, Cheloniidae), in the Black Sea with the review of the species occurrence in the region. Zoodiversity 55(2): 127-132.