[Coral-List] Sea Turtle Imprinting on Natal Beach
Booth, Charles E. (Biology)
booth at easternct.edu
Sat Jul 26 12:45:22 EDT 2014
John Ware asked when sea turtles imprint on their natal place. You might
want to check out the following:
The Imprinting Hypothesis and Sea Turtle Reproduction
David W. Owens, Mark A. Grassman and John R. Hendrickson
Herpetologica
Vol. 38, No. 1, Reproductive Biology of Reptiles (Mar., 1982), pp. 124-135
(available through JSTOR
http://www.jstor.org/discover/10.2307/3892367?uid=3739576&uid=2&uid=4&uid=37
39256&sid=21104395499527)
Geomagnetic imprinting: A unifying hypothesis of long-distance natal homing in
salmon and sea turtles
PNAS December 9, 2008 vol. 105 no. 49
[1]Kenneth J. Lohmann[2]^1,
[3]Nathan F. Putman, and
[4]Catherine M. F. Lohmann
Here we propose that salmon and sea turtles imprint on the magnetic field of
their natal areas and later use this information to direct natal homing.
This novel hypothesis provides the first plausible explanation for how
marine animals can navigate to natal areas from distant oceanic locations.
The hypothesis appears to be compatible with present and recent rates of
field change (secular variation); one implication, however, is that
unusually rapid changes in the Earth's field, as occasionally occur during
geomagnetic polarity reversals, may affect ecological processes by
disrupting natal homing, resulting in widespread colonization events and
changes in population structure.
http://www.pnas.org/content/105/49/19096.full
References
1. http://www.pnas.org/search?author1=Kenneth+J.+Lohmann&sortspec=date&submit=Submit
2. http://www.pnas.org/content/105/49/19096.full#corresp-1
3. http://www.pnas.org/search?author1=Nathan+F.+Putman&sortspec=date&submit=Submit
4. http://www.pnas.org/search?author1=Catherine+M.+F.+Lohmann&sortspec=date&submit=Submit
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