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Island-finding ability of marine turtles

In English

Författare

  • Graeme C. Hays
  • Susanne Åkesson
  • Annette C. Broderick
  • Fiona Glen
  • Brendan J. Godley
  • Floriano Papi
  • Paolo Luschi

Summary, in English

Green turtles (Chelonia mydas) swim from foraging grounds along the Brazilian coast to Ascension Island to nest, over 2200 km distant in the middle of the equatorial Atlantic. To test the hypothesis that turtles use wind-borne cues to locate Ascension Island we found turtles that had just completed nesting and then moved three individuals 50 km northwest (downwind) of the island and three individuals 50 km southeast (upwind). Their subsequent movements were tracked by satellite. Turtles released downwind returned to Ascension Island within 1, 2 and 4 days, respectively. By contrast, those released upwind had far more difficulty in relocating Ascension Island, two eventually returning after 10 and 27 days and the third heading back to Brazil after failing to find its way back to the island. These findings strongly support the hypothesis that wind-borne cues are used by turtles to locate Ascension Island.

Publiceringsår

2003

Språk

Engelska

Sidor

5-7

Publikation/Tidskrift/Serie

Royal Society of London. Proceedings B. Biological Sciences

Volym

270

Issue

Suppl. 1, Aug 7

Dokumenttyp

Artikel i tidskrift

Förlag

Royal Society Publishing

Ämne

  • Biological Sciences

Status

Published

Forskningsgrupp

  • Animal Navigation Lab

ISBN/ISSN/Övrigt

  • ISSN: 1471-2954