Functional Autonomy of Land and Sea Orientation Systems in Sea Turtle Hatchlings.

@article{Lohmann1990FunctionalAO,
  title={Functional Autonomy of Land and Sea Orientation Systems in Sea Turtle Hatchlings.},
  author={Kenneth J. Lohmann and Michael Salmon and Jeanette Wyneken},
  journal={The Biological bulletin},
  year={1990},
  volume={179 2},
  pages={
          214-218
        }
}
Sea turtle hatchlings emerge from underground nests on oceanic beaches and immediately confront two separate problems in orientation. First they must locate the ocean and crawl to it; then they must orient offshore while they swim out to sea in a migration lasting several days. Visual cues guide hatchlings from the nest to the sea (1, 2) but little is known about the cues used by turtles in the ocean. Nevertheless, the crawl across the beach has long been considered essential to swimming… 
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Orientation and open-sea navigation in sea turtles
  • Lohmann
  • Environmental Science
    The Journal of experimental biology
  • 1996
TLDR
Evidence suggests that hatchlings sequentially use three different sets of cues to maintain orientation during their initial migration offshore, raising the possibility that adult sea turtles navigate using a bicoordinate magnetic map.
Migratory guidance mechanisms in marine turtles
TLDR
Hatchling sea turtles from eastern Florida, U.S.A., appear to use three different sets of orientation cues sequentially as they migrate offshore, and adults may exploit geomagnetic features in one of several different ways to guide themselves into the vicinity of a nesting area.
Orientation to oceanic waves by green turtle hatchlings
TLDR
Calculations indicate that, at the depth at which hatchlings swim, accelerations produced beneath typical waves and swells along the Florida coast are sufficient to be detected by the vertebrate inner ear.
Do swimming loggerhead sea turtles (Caretta caretta L.) use light cues for offshore orientation
TLDR
It is concluded that responses evoked by shapes were due to “light trapping”; effects, and it is unlikely that such photic stimuli are of primary importance in guiding hatchling movements offshore.
Responses of hatchling sea turtles to rotational displacements
Effects of exposure to artificial lighting on orientation of hatchling sea turtles on the beach and in the ocean
TLDR
It is demonstrated that orientation toward artificial light sources compromises the ability of hatchlings to respond to natural orientation cues, both on land and in the sea.
Perception of wave surge motion by hatchling sea turtles
ACQUISITION OF MAGNETIC DIRECTIONAL PREFERENCE IN HATCHLING LOGGERHEAD SEA TURTLES
  • Lohmann
  • Environmental Science
    The Journal of experimental biology
  • 1994
TLDR
It is hypothesized that hatchlings initially establish a seaward course using visual cues available on or near land, then maintain the course using magnetic cues as they migrate into the open sea, and that light cues can set the preferred direction of magnetic orientation by loggerhead hatchlings.
Nearshore wave characteristics as cues for swimming orientation in flatback turtle hatchlings
Discrimination of ocean wave features by hatchling loggerhead sea turtles, Caretta caretta
TLDR
It is demonstrated that hatchling loggerheads can distinguish between waves with different periods and amplitudes, and that Florida hatchlings respond most strongly to orbital movements closely resembling those of waves that occur near their natal beach.
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References

SHOWING 1-10 OF 18 REFERENCES
Orientation and swimming behavior of hatchling loggerhead turtles Caretta caretta L. during their offshore migration
Orientation and behaviour of hatchling green turtles (Chelonia mydas) in the sea
  • J. Frick
  • Environmental Science
    Animal Behaviour
  • 1976
Field experiments on the sense organs and directional cues involved in offshore-oriented swimming by Aplysia brasiliana Rang (Mollusca:Gastropoda)
Orientation Mechanisms of Marine Turtles
The principal mechanism in the sea-finding orientation of hatchling turtles when they move from the nest to the water is based on a photo-tropotactic reaction to light and a complex balancing of…
Directional orientation in blue crabs, Callinectes sapidusRathbun: Escape responses and influence of wave direction
The Hatching and Emergence of Loggerhead Turtle (Caretta caretta) Hatchlings
TLDR
Loggerhead turtle eggs collected during the summer of 1977 were concluded that hatching and emergence were socially facilitated and predators are likely to be less efficient than they would be if hatchlings emerged singly.
Nearshore Biomechanics. (Book Reviews: Biology and the Mechanics of the Wave-Swept Environment)
This text introduces and draws together pertinent aspects of fluid dynamics, physical oceanography, solid mechanics, and organismal biology to provide a much-needed set of tools for quantitatively…
The sea turtle : so excellent a fishe
Conserving Sea Turf / es . British Herpetological Society , London . Salmon , M . , and J . Wyneken .
  • 1983
Conserving sea turtles
...
1
2
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