Shigeyuki Koshikawa
Hokkaido University
65 Papers
205 Citations
Shigeyuki Koshikawa is an academic researcher from Hokkaido University. The author has contributed to research in topics: Biology & Gene. The author has an hindex of 20, co-authored 54 publications. Previous affiliations of Shigeyuki Koshikawa include Howard Hughes Medical Institute & University of Tokyo.
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Papers
Functions of melanin synthesis genes, yellow and tan, in wing pigmentation revealed by CRISPR/Cas9-mediated mutagenesis in Drosophila guttifera.
Keiji Matsumoto,Wataru Yamamoto,Yuichi Fukutomi,Shigeyuki Koshikawa +3 more
- 22 Dec 2025
TL;DR: This study uses CRISPR/Cas9 to investigate the roles of melanin synthesis genes, yellow and tan, in Drosophila guttifera wing pigmentation, revealing essential functions in pigmentation intensity and additive effects in double mutants.
The color pattern inducing gene wingless is expressed in specific cell types of campaniform sensilla of a polka-dotted fruit fly, Drosophila guttifera
TL;DR: In the case of Drosophila guttifera, a morphogen-encoding gene, wingless, is expressed in species-specific positions and induces a unique pigmentation pattern as discussed by the authors.
Photoreceptor genes in a trechine beetle,<i>Trechiama kuznetsovi</i>, living in the upper hypogean zone
Shigeyuki Koshikawa
- 01 Mar 2023
TL;DR: In this paper , the photoreception ability in a trechine beetle, Trechiama kuznetsovi , was examined by de novo assembly of genome and transcript sequences, and they were able to identify photoreceptor genes and phototransduction genes.
Photoreceptor genes in a trechine beetle, Trechiama kuznetsovi, living in the upper hypogean zone
TL;DR: In this paper , the photoreception ability in a trechine beetle, Trechiama kuznetsovi , was examined by de novo assembly of genome and transcript sequences, which was able to identify photoreceptor genes and phototransduction genes.
Cis-regulatory evolution that caused change in wingless expression pattern associated with wing pigmentation pattern of Drosophila
TL;DR: In this paper , the changes in the cis-regulatory sequence which caused the co-option of wingless that lead to the expression in a new place were revealed, where the sequence was divided into regions needed to activate expression in the entire wing veins and a region required for repressing expression in excess parts.