%0 Journal Article %T Phylogenetic Evidence for the Gain and Loss of a Sexually Selected Trait in Sailfin Mollies %A Margaret B. Ptacek %A Michael J. Childress %A Jennifer A. Petersen %A Anne O. Tomasso %J ISRN Zoology %D 2011 %I Hindawi Publishing Corporation %R 10.5402/2011/251925 %U http://dx.doi.org/10.5402/2011/251925