Nc. Noriega et Tb. Hayes, DDT congener effects on secondary sex coloration in the reed frog Hyperolius argus: a partial evaluation of the Hyperolius argus endocrine screen, COMP BIOC B, 126(2), 2000, pp. 231-237
Citations number
28
Categorie Soggetti
Biochemistry & Biophysics
Journal title
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
Organochlorine compounds such as o,p'DDT can mimic estrogen effects. We com
pared the effects of o,p'DDT and six other DDT congeners to the effects of
estradiol by comparing in vivo color changes in the reed frog (Hyperolius a
rgus). Premature female color pattern induction in H. argus is specific to
estrogens and the current study suggests that this assay has potential for
use in discriminating between xenobiotic estrogens and non-estrogens. Anima
ls were treated at forelimb emergence and maintained in treated solution un
til final evaluation. Estradiol, o,pDDT (0.1 mu g/ml), o,p'DDE (1 mu g/ml)
and o,p'DDD (1 mu g/ml) prematurely induced adult female coloration pattern
s in juvenile animals, whereas p,p'DDT, p,p'DDE and p,p'DDD did not. (C) 20
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