%0 Journal Article %T A comprehensive comparison of sex-inducing activity in asexual worms of the planarian Dugesia ryukyuensis: the crucial sex-inducing substance appears to be present in yolk glands in Tricladida %A Haruka Nakagawa %A Kazuya Kobayashi %A Kiyono Sekii %A Makoto Kitamura %A Marina Abukawa %A Midori Matsumoto %A Soichiro Miyashita %A Takanobu Maezawa %J Archive of "Zoological Letters". %D 2018 %R 10.1186/s40851-018-0096-9 %X The online version of this article (10.1186/s40851-018-0096-9) contains supplementary material, which is available to authorized users %K Turbellaria %K Triclad %K Polyclad %K Planarian %K Dugesia ryukyuensis %K Asexual reproduction %K Sexual reproduction %K Sexual induction %K Sex-inducing substance %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5996458/