%0 Journal Article
%T Pigment patterns in adult fish result from superimposition of two largely independent pigmentation mechanisms.
%A Ceinos RM
%A Guillot R
%A Kelsh RN
%A Cerdá-Reverter JM
%A Rotllant J
%J Pigment Cell Melanoma Res
%V 28
%N 2
%D Mar 2015
%M 25469713
%F 4.159
%R 10.1111/pcmr.12335
%X Dorso-ventral pigment pattern differences are the most widespread pigmentary adaptations in vertebrates. In mammals, this pattern is controlled by regulating melanin chemistry in melanocytes using a protein, agouti-signalling peptide (ASIP). In fish, studies of pigment patterning have focused on stripe formation, identifying a core striping mechanism dependent upon interactions between different pigment cell types. In contrast, mechanisms driving the dorso-ventral countershading pattern have been overlooked. Here, we demonstrate that, in fact, zebrafish utilize two distinct adult pigment patterning mechanisms - an ancient dorso-ventral patterning mechanism, and a more recent striping mechanism based on cell-cell interactions; remarkably, the dorso-ventral patterning mechanism also utilizes ASIP. These two mechanisms function largely independently, with resultant patterns superimposed to give the full pattern.