スギモト　マサズミ   Sugimoto Masazumi   杉本　雅純    所属   東邦大学  理学部 生物分子科学科    職種   教授
言語種別	英語
発表タイトル	Androgen influences the distribution of chromatophores and induces male-type nuptial coloration in female rosy bitterling.
会議名	20th International Pigment Cell Conference
学会区分	国際学会
発表形式	ポスター掲示
講演区分	一般
発表者・共同発表者	Tajima C, Kobayashi M, ◎Sugimoto M.
発表年月日	2008/05/08
開催地 （都市, 国名）	札幌
学会抄録	XXth International Pigment Cell Conference - IPCC and Vth International Melanoma Research Congress - IMRC 45-49
概要	The effects of androgen on the body color of the female rosy bitterling were examined at the skin chromatophore level. Treatment with methyltesto-sterone or with 11-ketotestosterone for 30 days induced a rosy coloration of the body. In addition, the fins became darker and were red in some areas. The rosy coloration was caused by increased numbers of red erythrophores and colorful iridophores instead of yellow xanthophores and silvery iridophores, respectively. In the dorsal fin, the black spot disappeared, and the anterior part and the distal region became red and black, respectively. These results suggest that androgen regulates the region-specific differentiation, migration and apoptosis of skin chromatophores and induces a male-type nuptial coloration in the female rosy bitterling.