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Journals / Turkish Journal of Zoology / 2021 / Cilt: 45 - Sayı: 6

Male-biased in-water population of loggerhead turtle (Caretta caretta) in Dalyan, Turkey as a possible important marine turtle area in the Mediterranean

Eyup BAŞKALE
Doğan SÖZBİLEN
Yakup KASKA
Pages
486–498
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Our results indicate that some of the overwintering individuals also contribute to the nesting population in the region.

📌 3 Key Takeaways

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Objective & Hypothesis:Abstract: In this study, we present the first in-water monitoring results of loggerhead turtles (Caretta caretta) in Köyceğiz-Dalyan specially protected area (SPA), Turkey.
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Key Findings & Data:The capture-mark-recapture (CMR) study encompassed a total of 113 capture events of 88 individuals across two sampling years.
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Conclusion & Impact:Our results indicate that some of the overwintering individuals also contribute to the nesting population in the region.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Abstract: In this study, we present the first in-water monitoring results of loggerhead turtles (Caretta caretta) in Köyceğiz-Dalyan specially protected area (SPA), Turkey. The capture-mark-recapture (CMR) study encompassed a total of 113 capture events of 88 individuals across two sampling years. The majority of the population was adults (88.6%) with a highly male-biased (70.5%) sex ratio. Our results indicate that some of the overwintering individuals also contribute to the nesting population in the region. Biometric characteristics of captured individuals were also presented. Additionally, we found the population to be under heavy anthropogenic threats with 54.5% of the captured individuals exhibiting results of previous anthropogenically caused injuries. Our results suggest that Köyceğiz-Dalyan SPA is an important overwintering and foraging area for loggerhead turtles, which is currently an indexed nesting site for loggerhead turtles in the Mediterranean. Given the possible feminization effects of climate change on future marine turtle populations, the male-biased population in the study area is of the greatest importance, and together with having an indexed nesting site, the area should therefore be regarded as an important marine turtle area.Key words: Overwintering area, in-water population, sex ratio, hotspot, anthropogenic impact

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Cite This Article

BAŞKALE, E., SÖZBİLEN, D., KASKA, Y. (2022). Male-biased in-water population of loggerhead turtle (Caretta caretta) in Dalyan, Turkey as a possible important marine turtle area in the Mediterranean. Turkish Journal of Zoology, Cilt: 45 - Sayı: 6, 486–498. https://ajindex.com/articles/615955

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References (3)

  1. Avşar Ö, Avşar U, Arslan Ş, Kurtuluş B, Niedermann S, Güleç N (2017). Subaqueous hot springs in Köyceğiz Lake, Dalyan Channel and Fethiye-Göcek Bay (SW Turkey).: Locations, chemistry and origins. Journal of Volcanology and Geothermal Research 345: 81- 97. doi: 10.1016/j.jvolgeores.2017.07.016 Başkale E, Katılmış Y, Azmaz M, Sözbilen D, Polat F et al. (2016). Monitoring and conservation of loggerhead turtle's nests on Fethiye Beaches, Turkey. Biharean Biologist 10: 20-23.
  2. Başkale E, Sözbilen D, Katılmış Y, Azmaz M, Kaska Y (2018a). An evaluation of sea turtle strandings in the Fethiye-Göcek Specially Protected Area: An important foraging ground with an increasing mortality rate. Ocean & Coastal Management 154: 26-33. doi: 10.1016/j.ocecoaman.2018.01.003 Başkale E, Sözbilen D, Katılmış Y et al (2018b). The sporadic nesting sites of loggerhead and green turtles on western Anatolian coasts. In: Proceedings of the 38th Annual Symposium on Sea Turtle Biology and Conservation, p. 237. Bentivegna F, Breber P, Hochscheid S (2002). Cold stunned loggerhead turtles in the South Adriatic Sea. Marine Turtle Newsletter 97 Berglund A (1994). The operational sex ratio influences choosiness in a pipefish. Behavioral Ecology 5: 254-258. doi: 10.1093/beheco/5.3.254 Bolten AB (1999). Techniques for measuring sea turtles. In: Eckert KL, Bjorndal KA, Grobo FAA, Donnelly M (eds). Research and management techniques for the conservation of sea turtles. IUCN/SSC Marine Turtle Specialist Group Publication, pp 110- 114 Bowen BW, Bass AL, Chow SM, Bostrom M, Bjorndal KA et al., (2004). Natal homing in juvenile loggerhead turtles (Caretta caretta). Molecular Ecology 13: 3797-3808 doi: 10.1111/j.1365- 294X.2004.02356.x Bowen BW, Karl S (2007). Population genetics and phylogeography of sea turtles. Molecular Ecology 16: 4886-4907. doi: 10.1111/j.1365- 294X.2007.03542.x Broderick AC, Glen F, Godley BJ, Hays GC (2003). Variation in reproductive output of marine turtles. Journal of Experimental Marine Biology and Ecology 288: 95-109.
  3. Broderick A.C., Coyne M.S., Fuller W.J., et al. 2007. Fidelity and overwintering of sea turtles. Proc. R. Soc. B Biol. Sci. 274: 1533-1538. doi: 10.1098/rspb.2007.0211 Camedda A, Marra S, Matiddi M, Massaro G, Coppa S et al., (2014). Interaction between loggerhead sea turtles (Caretta caretta). and marine litter in Sardinia (Western Mediterranean Sea). Marine environmental research 100: 25-32. doi: 10.1016/j.marenvres.2013.12.004 Canbolat AF (2004). A review of