Analysis of the spectrophotometric reflectance response of frogs to melanophore hormone,

✍ Scribed by Teague, Robert S. ;Patton, Jane R.

• Book ID: 102878059
• Publisher: Wiley (John Wiley & Sons)
• Year: 1960
• Tongue: English
• Weight: 628 KB
• Volume: 56
• Category: Article
• ISSN: 0095-9898
• DOI: 10.1002/jcp.1030560104

✦ Synopsis

Chromatophore responses have traditionally been evaluated by observation of the position of pigment granules in the cells, the position being sometimes assigned a number on an arbitrary scale described by Hogben and Slome ('31). In searching for an objective method of measuring melanosome migration within melanophores of frogs, certain objective techniques have been introduced. These were reviewed by Thing ( ' 5 2 ) , who devised a reflection photometer to measure responses in living Rana esculenta and compared the results with the melanophore index. Shizume, Lerner and Fitzpatrick ('54) measured responses in isolated skin of Rann pipiens with a reflection photometer, a method which was compared with similar measurements in intact frogs by Deutsch, Angelakos and Loew ('57). Rigler and Holzbauer ('53) have measured the relative absorbance of isolated skin.

This communication contains basic information concerning the physical aspects of amphibian color change and its relationship to melanophore hormone, as revealed by the use of spectrophotometric directional reflectance.