Carotenoid scarcity, synthetic pteridine pigments and the evolution of sexual coloration in guppies (Poecilia reticulata)
Author: Grether, Gregory F..  Published in: Proceedings of the Royal Society of London. Series B: Biological Sciences, v. 268  no. 1473, pp. 1245- 1253  Date: 2001
ISSN:  0962-8452,  EISSN:  1471-2954  DOI:  10.1098/rspb.2001.1624 
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