Research Article

Marine Biology

, Volume 146, Issue 5, pp 1039-1049

Patterns in the emergence of green (Chelonia mydas) and loggerhead (Caretta caretta) turtle hatchlings from their nests

  • F. GlenAffiliated withSchool of Biological Sciences, Institute of Environmental Sustainability, University of Wales Swansea Email author 
  • , A. C. BroderickAffiliated withMarine Turtle Research Group, Centre for Ecology and Conservation, University of Exeter in Cornwall
  • , B. J. GodleyAffiliated withMarine Turtle Research Group, Centre for Ecology and Conservation, University of Exeter in Cornwall
  • , G. C. HaysAffiliated withSchool of Biological Sciences, Institute of Environmental Sustainability, University of Wales Swansea

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

The emergence patterns of both green (Chelonia mydas) and loggerhead (Caretta caretta) turtle hatchlings were observed in great detail over three seasons at Alagadi beach, northern Cyprus. In total, 38 green turtle and 50 loggerhead turtle nests were monitored, accounting for the emergence of 2,807 and 2,259 hatchlings, respectively. We quantified these emergences into 397 green turtle and 302 loggerhead turtle emergence groups. Overall, 85.0% of green turtle and 79.5% of loggerhead turtle groups emerged at night; these accounted for 85.5 and 90.8% of hatchlings, respectively. The remaining emergences were dispersed throughout the day for green turtle nests but confined to the morning in loggerhead turtle nests. Hatchling emergence from individual nests occurred over periods of between 1 and 7 nights, with most hatchlings typically emerging on the first night. Group sizes of green turtles emerging during the day were significantly smaller than those emerging at night. Hatchlings of both species that emerged from nests during the day had longer emergence durations than those that emerged from nests at night only.