| Threatened
mothers have tougher offspring
Radishes and water
fleas that soup up their defenses as needed pass down weaponry to their
offspring even when the world has become safe again.
References:
Agrawal, A.A.,
C. Laforsch, and R. Tollrian. 1999. Transgenerational induction of
defences in animals and plants. Nature 401(Sept. 2):60.
Further Readings:
1999. The
Ecology and Evolution of Inducible Defenses, R. Tollrian, and C.D.
Harvell, eds. Princeton: Princeton University Press.
Sources:
Anurag A.
Agrawal
University of California, Davis
Department of Entomology
Davis, CA 95616-8584
Ellen Simms
University of California, Berkeley
Department of Integrative Biology
3060 VLSB
Berkeley, CA 94720
Ralph Tollrian
Ludwig-Maximilian University
Zoological Institute
Karlstr. 25
D-80333 Muenchen
Germany
From Science
News, Vol. 156, No. 10, September 4, 1999, p. 151. Copyright ©
1999, Science Service. |