研究者詳細 - 石川　由希

論文 - 石川　由希

分割表示 34 件中 21 - 34 件目／全件表示 >>

Identification of novel vibration- and deflection-sensitive neuronal subgroups in Johnston’s organ of the fruit fly 査読有り

Eriko Matsuo, Daichi Yamada, Yuki Ishikawa, Tomonori Asai, Hiroshi Ishimoto, Azusa Kamikouchi

Frontiers in Physiology 5 巻 ( 179 ) 頁： 179 2014年5月

Developmental Link between Sex and Nutrition; doublesex Regulates Sex-Specific Mandible Growth via Juvenile Hormone Signaling in Stag Beetles 査読有り

Hiroki Gotoh, Hitoshi Miyakawa, Asano Ishikawa, Yuki Ishikawa, Yasuhiro Sugime, Douglas J. Emlen, Laura C. Lavine, Toru Miura

PLoS Genetics 10 巻 ( 1 ) 頁： e1004098 2014年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：1

Sexual dimorphisms in trait expression are widespread among animals and are especially pronounced in ornaments and weapons of sexual selection, which can attain exaggerated sizes. Expression of exaggerated traits is usually male-specific and nutrition sensitive. Consequently, the developmental mechanisms generating sexually dimorphic growth and nutrition-dependent phenotypic plasticity are each likely to regulate the expression of extreme structures. Yet we know little about how either of these mechanisms work, much less how they might interact with each other. We investigated the developmental mechanisms of sex-specific mandible growth in the stag beetle Cyclommatus metallifer, focusing on doublesex gene function and its interaction with juvenile hormone (JH) signaling. doublesex genes encode transcription factors that orchestrate male and female specific trait development, and JH acts as a mediator between nutrition and mandible growth. We found that the Cmdsx gene regulates sex differentiation in the stag beetle. Knockdown of Cmdsx by RNA-interference in both males and females produced intersex phenotypes, indicating a role for Cmdsx in sex-specific trait growth. By combining knockdown of Cmdsx with JH treatment, we showed that female-specific splice variants of Cmdsx contribute to the insensitivity of female mandibles to JH: knockdown of Cmdsx reversed this pattern, so that mandibles in knockdown females were stimulated to grow by JH treatment. In contrast, mandibles in knockdown males retained some sensitivity to JH, though mandibles in these individuals did not attain the full sizes of wild type males. We suggest that moderate JH sensitivity of mandibular cells may be the default developmental state for both sexes, with sex-specific Dsx protein decreasing sensitivity in females, and increasing it in males. This study is the first to demonstrate a causal link between the sex determination and JH signaling pathways, which clearly interact to determine the developmental fates and final sizes of nutrition-dependent secondary-sexual characters. © 2014 Gotoh et al.

DOI： 10.1371/journal.pgen.1004098

Scopus

PubMed

Genetic and Neural Bases for Species-Specific Behavior in Drosophila Species. 査読有り

Yamamoto D, Ishikawa Y

27 巻 ( 3 ) 頁： 130-142 2013年9月

Soldier Morphogenesis in the Damp-Wood Termite Is Regulated by the Insulin Signaling Pathway 査読有り国際誌

Hattori, A; Sugime, Y; Sasa, C; Miyakawa, H; Ishikawa, Y; Miyazaki, S; Okada, Y; Cornette, R; Lavine, LC; Emlen, DJ; Koshikawa, S; Miura, T

JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 320 巻 ( 5 ) 頁： 295 - 306 2013年7月

Screening of Upregulated Genes Induced by High Density in the Vetch Aphid Megoura crassicauda 査読有り国際誌

Ishikawa, A; Ishikawa, Y; Okada, Y; Miyazaki, S; Miyakawa, H; Koshikawa, S; Brisson, JA; Miura, T

JOURNAL OF EXPERIMENTAL ZOOLOGY PART A-ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY 317 巻 ( 3 ) 頁： 194 - 203 2012年3月

Hidden aggression in termite workers: plastic defensive behaviour dependent upon social context 査読有り

Ishikawa, Y; Miura, T

ANIMAL BEHAVIOUR 83 巻 ( 3 ) 頁： 737 - 745 2012年3月

Gene expression changes during caste-specific neuronal development in the damp-wood termite Hodotermopsis sjostedti 査読有り国際誌

Ishikawa, Y; Okada, Y; Ishikawa, A; Miyakawa, H; Koshikawa, S; Miura, T

BMC GENOMICS 11 巻 ( 314 ) 頁： 314 - 314 2010年5月

Gene up-regulation in response to predator kairomones in the water flea, Daphnia pulex 査読有り

Miyakawa, H; Imai, M; Sugimoto, N; Ishikawa, Y; Ishikawa, A; Ishigaki, H; Okada, Y; Miyazaki, S; Koshikawa, S; Cornette, R; Miura, T

BMC DEVELOPMENTAL BIOLOGY 10 巻 ( 45 ) 頁： 45 2010年4月

A mathematical model for caste differentiation in termite colonies (Isoptera) by hormonal and pheromonal regulations 査読有り

Ikemoto Y, Ishikawa Y, Miura T, Asama H

Sociobiology 54 巻頁： 841-859 2009年

Soldier-Specific Modification of the Mandibular Motor Neurons in Termites 査読有り国際誌

Ishikawa, Y; Aonuma, H; Miura, T

PLOS ONE 3 巻 ( 7 ) 頁： e2617 2008年7月

Differences in mechanosensory hairs among castes of the damp-wood termite Hodotermopsis sjostedti (Isoptera: Termitidae) 査読有り

Ishikawa Y, Koshikawa S, Miura T

Sociobiology 50 巻頁： 895-907 2007年

Differences in mechanosensory hairs among castes of the damp-wood termite Hodotermopsis sjostedti (Isoptera: Termitidae). 査読有り

Yuki Ishikawa, Shigeyuki Koshikawa, Toru Miura

Sociobiology 50 巻頁： 895 - 907 2007年

Soldier-specific neural modification in termites

Ishikawa Yuki, Miura Toru

NEUROSCIENCE RESEARCH 58 巻頁： S231 - S231 2007年

Differences in mechanosensory hairs among castes of the damp-wood termite Hodotermopsis sjostedti (Isoptera: Termopsidae)

Ishikawa, Y; Koshikawa, S; Miura, T

SOCIOBIOLOGY 50 巻 ( 3 ) 頁： 895 - 907 2007年

　前のページ - 次のページ　

<石川 由希>

論文 - 石川 由希

<石川　由希>

論文 - 石川　由希