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Journals / Turkish Journal of Zoology / 2006 / Cilt: 30 - Sayı: 4

Hatching Success of Original and Hatchery Nests of the Green Turtle, Chelonia mydas, in Northern Cyprus

Kuzey Kıbrıs Yeşil Deniz Kaplumbağası, Chelonia mydas, Orijinal ve Taşıma Yuvalarında Yavru Çıkış Başarısı

Burcu ÖZDEMİR
Oğuz TÜRKOZAN
Pages
377–381
Publication Date
2006-04-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The correlation coefficient equals -0.30, indicating a relatively weak relationship between variables.

📌 3 Key Takeaways

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Objective & Hypothesis:This paper provides information on the relation of abiotic factors (moisture content, nest depth, distance of nest from the sea and distance from vegetation) and a biotic factor (clutch size) with the hatching success of green sea turtles, Chelonia mydas, in original nests and hatcheries in Northern Cyprus.
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Key Findings & Data:A hundred and twenty-nine randomly selected clutches (67 original and 62 hatchery) were examined.
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Conclusion & Impact:The correlation coefficient equals -0.30, indicating a relatively weak relationship between variables.
🔬Design:Lab & Field Experiment
📍Scope:Comprehensive Sample
⚙️Variables:Chelonia mydas · yavru ç›k›fl baflar›s› · yuva

Abstract

This paper provides information on the relation of abiotic factors (moisture content, nest depth, distance of nest from the sea and distance from vegetation) and a biotic factor (clutch size) with the hatching success of green sea turtles, Chelonia mydas, in original nests and hatcheries in Northern Cyprus. A hundred and twenty-nine randomly selected clutches (67 original and 62 hatchery) were examined. First, original and hatchery nests were tested separately and none of the factors were found to be associated with hatching success. Since no differences were detected between the original and hatchery nests in terms of hatching success, both were pooled and tested with general linear models (GLMs) by taking locality and nest type as categorical predictors. Accordingly, moisture was found to be associated with the hatching success (F = 5.02; P < 0.05) of green turtles in Northern Cyprus. However, R-squared statistics indicate that the model fitted explains 26% of the variability in hatching success. The correlation coefficient equals -0.30, indicating a relatively weak relationship between variables.

Özet

Bu çal›flmada Kuzey K›br›s’ta yeflil deniz kaplumba¤alar›na, Chelonia mydas, ait orijinal ve tafl›ma yuvalardaki baz› abiyotik (nem, yuva derinli¤i, yuvan›n denize uzakl›¤›, yuvan›n vejetasyona uzakl›¤›) ve bir biyotik faktörün (kuluçka büyüklü¤ü) yavru ç›k›fl baflar›s›yla iliflkisi incelenmifltir. Çal›flma rasgele seçilen 129 yuvada (67 orijinal ve 62 tafl›ma yuva) gerçeklefltirilmifltir. Öncelikleorijinal ve tafl›ma yuvalar ayr› ayr› test edilmifller ve incelenen faktörlerin hiç birisi yavru ç›k›fl baflar›s›yla iliflkili bulunmam›flt›r. Orijinal yuvalarla tafl›ma yuvalar aras›nda yavru ç›k›fl baflar›s› aç›s›ndan bir fark bulunmad›¤› için (P > 0,05) daha sonra her iki yuva tipi de genel lineer modelleme (GLM) tekni¤iyle lokalite ve yuva tipi kategorik de¤iflken olarak al›n›p test edildi¤inde yuva içindeki nemin yavru ç›k›fl baflar›s›yla iliflkili oldu¤u saptanm›flt›r (F = 5,02; P < 0,05). Ancak R kare de¤eri uygun modelin yavru ç›k›fl baflar›s›ndaki de¤iflkenli¤in ancak % 26 s›n› aç›klamaktad›r. Korelasyon katsay›s›n›n –0,30 olmas› de¤iflkenler aras›nda nispeten zay›f bir iliflkinin oldu¤unu göstermektedir.

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Cite This Article

ÖZDEMİR, B., TÜRKOZAN, O. (2006). Hatching Success of Original and Hatchery Nests of the Green Turtle, Chelonia mydas, in Northern Cyprus. Turkish Journal of Zoology, Cilt: 30 - Sayı: 4, 377–381. https://ajindex.com/articles/724432

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References (12)

  1. Ackerman, A.R. 1997. The nest environment and the embryonic development of sea turtles. In Biology of Sea Turtles (ed. P.L. Lutz and J.A. Musick), pp. 83-106.
  2. Blamires, S.J. and Guinean, M. 2003. Emergence success of Flatback sea turtles (Natator depressus) at Fog Bay, Northern Territory, Australia. Chelonian Conservation and Biology. 4: 548-556.
  3. Bustard, H.R. and Greenham, P. 1968. Physical and chemical factors affecting hatching in the green turtle, Chelonia mydas (L.). Ecology. 49: 269-276.
  4. Fowler, L. 1979. Hatching success and nest predation in the green sea turtle, Chelonia mydas, Tortuguero, Costa Rica. Ecology. 60: 946-955.
  5. Hall, K.V. 1990. Hatching success of leatherback turtle (Dermochelys coriacea) clutches in relation to biotic and abiotic factors. In: Proceedings of the Tenth Annual Workshop on Sea turtle Biology and Conservation (eds. T.H. Richardson, J. I. Richardson and M. Donnelly), NOAA Technical Memorandum NMFS-SEFC-278, pp. 197-200.
  6. Head, K.H. 1992. Manual of Soil Laboratory Testing. Halsted Press,
  7. New York. Hewavisenthi, S. and Parmenter, J. 2002. Incubation environment and nest success of the flatback turtle (Natator depressus) from a natural nesting beach. Copeia. 2: 302-312.
  8. Huerta, B.F. 1995. Relationship between sand moisture and hatching success of olive ridley (Lepidochelys olivacea), at Escobilla, Oaxaca. In: Proceedings of the Twelfth Annual Workshop on Sea Turtle Biology and Conservation (eds. J.I. Richardson and T.H. Richardson); NOAA Technical Memorandum, 361, pp. 162-165. IUCN 2000. 2000 IUCN Redlist of Threatened Species. The IUCN Species Survival Commission. www.redlist.org. Kasparek, M., Godley, B.J. and Broderick, A.C. 2001.
  9. Nesting of green turtle, Chelonia mydas, in the Mediterranean: a review of status and conservation needs. Zoology in the Middle East. 24: 45-74.
  10. Limpus, C.J., Baker, V. and Miller, J.D. 1983. Island and turtles. The influence of choice of nesting beach on sex ratio. In: Proceedings of the Inaugural Great Barrier Reef Conference (eds. J.T. Baker, R.M. Carter, P. W. Sammarco and K.P Stark) JCU Press, Townsville, pp. 397-402.
  11. McGehee, M.A. 1990. Effects of moisture on eggs and hatchlings of loggerhead sea turtles (Caretta caretta). Herpetologica. 46: 251- 258. Miller, J.D. 1985. Embryology of marine turtles. In: Biology of the Reptilia (eds C. Gans, R.G Northcutt and P. Ulinsky), Vol. 14, Academic Press, London and New York, pp. 269-328.
  12. Miller, J.D. 1997. Reproduction in sea turtles. In: Biology of Se