Pigments and Ultrastructures of Pigment Cells in Xanthic Sailfin Mollies (Poecilia latipinna)

Academic Article

Abstract

  • Electron micrographs of skin from xanthic (gold) sailfin mollies revealed numerous xanthophores, as well as scattered melanophores. The melanophores were seen to contain premelanosomes in various stages of development. This is consistent with the fact that xanthic mollies have been shown to be tyrosinase positive. Melanosomes in xanthic mollies appear to develop by one of two pathways: 1) from an endoplasmic reticulumderived vesicle which develops an internal lamellar framework, and 2) by fusion of multiple Golgi‐derived vesicles which lack an internal lamellar framework. Analysis of the pigments in the skin of the xanthic mollies identified four colorless pteridine pigments (xanthopterin, isoxanthopterin, neopterin, and pterin) and a carotenoid with an absorbance spectrum similar to β‐carotene. It appears that, unlike some other poeciliid fishes, sailfin mollies do not use pteridine pigments for orange coloration. Rather, they appear to rely primarily on carotenoids. Copyright © 1991, Wiley Blackwell. All rights reserved
  • Authors

    Digital Object Identifier (doi)

    Author List

  • BLANCHARD PD; ANGUS RA; MORRISON RL; FROST MASON SK; SHEETZ JH
  • Start Page

  • 240
  • End Page

  • 246
  • Volume

  • 4
  • Issue

  • 5-6