Science News Week of Feb. 5, 2000; Vol. 157, No. 6 pg.87

DDT treatment turns male fish into mothers

(DDT turning boys into girls)

Injecting into fish eggs an estrogen-mimicking form of the pesticide DDT transforms genetically male Medaka fish into apparent females able to lay eggs that produce young.

References:

Edmunds, J.S.G., R.A. McCarthy, and J.S. Ramsdell. 2000.

Permanent and functional male-to-female sex reversal in d-rR strain medaka (Oryzias laptipes) following egg microinjection of o, pī-DDT. Environmental Health Perspectives

108(March):219.

Further Readings:

Adler, T. 1995. Fishy sex. Science News 148(Oct. 21):266.

Raloff, J. 1999. Pollutant waits to smite salmon at sea. Science News 155(May 8):293.

______. 1997. Is synergy of estrogen mimics an illusion? Science News 152(Aug. 2):69.

______. 1995. Beyond estrogens. Science News 148(July 15):44.

______. 1994. The gender benders. Science News 145(Jan. 8):24.

Sources:


From Science News, Vol. 157, No. 6, February 5, 2000, p. 87.