A5002179552- Insect behavior and control techniques
- Insect symbiosis and bacterial influences
- Animal Behavior and Reproduction
- Insect Pest Control Strategies
- Neurobiology and Insect Physiology Research
- Genetic diversity and population structure
- Insect Utilization and Effects
- Insect and Arachnid Ecology and Behavior
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Insect-Plant Interactions and Control
- CRISPR and Genetic Engineering
- Insect Resistance and Genetics
- Plant and animal studies
- Forest Insect Ecology and Management
- Chromosomal and Genetic Variations
- Plant Molecular Biology Research
- Evolution and Genetic Dynamics
- Scheduling and Timetabling Solutions
- Vector-Borne Animal Diseases
- Plant Reproductive Biology
- Sperm and Testicular Function
- Advanced Manufacturing and Logistics Optimization
- Vehicle Routing Optimization Methods
- Genetic Mapping and Diversity in Plants and Animals
- Optimization and Mathematical Programming
Tokyo Metropolitan University
2018-2022
Oxford Brookes University
2013-2020
Osaka Prefecture University
2006-2015
National Institute of Genetics
2008-2014
Kirin (Japan)
2011
The Graduate University for Advanced Studies, SOKENDAI
2008-2009
Shimizu (Japan)
2008
Kyoto Institute of Technology
2008
The University of Tokyo
2008
Nara Institute of Science and Technology
2006
Abstract A collaborative international trial was conducted to evaluate the reproducibility and transferability of an in vivo mutation assay based on enumeration CD59‐negative rat erythrocytes, a phenotype that is indicative Pig‐a gene mutation. Fourteen laboratories participated this study, where anti‐CD59‐PE, SYTO 13 dye, flow cytometry were used determine frequency erythrocytes (RBC CD59− ) reticulocytes (RET ). To provide samples with range mutant cell frequencies, male rats exposed N...
While the majority of Drosophila species lays eggs onto fermented fruits, females suzukii pierce skin and lay into ripening fruits using their serrated ovipositors. The changes oviposition site preference must have accompanied this niche exploitation. In study, we established an assay to investigate effects commensal microbes deposited by conspecific heterospecific individuals showed that presence on substrate enhances egg laying melanogaster biarmipes , but discourages D. . This result...
Abstract Male sexual characters are often among the first traits to diverge between closely related species and identifying genetic basis of such changes can contribute our understanding their evolutionary history. However, little is known about architecture or specific genes underlying evolution male genitalia. The morphology claspers, posterior lobes, anal plates exhibit striking differences Drosophila mauritiana D. simulans. Using QTL introgression-based high-resolution mapping, we...
SUMMARY Eye and head morphology vary considerably among insects even between closely related species of Drosophila . Species the D. melanogaster subgroup, other species, exhibit a negative correlation eye size face width (FW); for example, mauritiana generally has bigger eyes composed larger ommatidia conversely narrower than its sibling species. To better understand evolution morphology, we investigated genetic developmental basis differences in FW male simulans QTL mapping showed that...
Limited attention has been given to ecological factors influencing the coevolution of male and female genitalia. The innovative ovipositor Drosophila suzukii , an invading fruit pest, represents appealing case document this phenomenon. serrated saw-like is used pierce hard skin ripening fruits that are not by other flies prefer soft decaying fruits. Here, we highlight another function related its involvement in genital coupling during copulation. We compared morphology genitalia species...
Male genital structures are among the most rapidly evolving morphological traits and often only features that can distinguish closely related species. This process is thought to be driven by sexual selection may reinforce species separation. However, while genetic bases of many phenotypic differences have been identified, we still lack knowledge about genes underlying evolutionary in male organs organ size more generally. The claspers (surstyli) periphallic play an important role copulation...
Summary Segmental duplications are enriched within many eukaryote genomes, and their potential consequence is gene duplication. While previous theoretical studies of duplication have mainly focused on the silencing process after fixation, leading to fixation even more important for segmental duplications, because majority would be lost before reaching a significant frequency in population. Here, by series computer simulations, we show that purifying selection against loss-of-function...
Mechanical incompatibility of male and female genitalia is common in animals with internal fertilization. However, our knowledge regarding the precise mechanisms limited. One key question regards susceptibility match between to morphological modification. To address this issue, we generated six different second‐chromosome introgression lines possessing partially Drosophila mauritiana‐like genital morphology multiple structures D. simulans background. Three males showed elevated mobility at...
Abstract In the last 240,000 years, males of Drosophila simulans species clade have evolved striking differences in morphology their epandrial posterior lobes and claspers (surstyli). These appendages are used for grasping female during mating so divergence is most likely driven by sexual selection. Mapping studies indicate a highly polygenic generally additive genetic basis these morphological differences. However, we limited understanding gene regulatory networks that control development...
The spatiotemporal regulation of gene expression is essential to ensure robust phenotypic outcomes. Pigmentation patterns in Drosophila are determined by pigments biosynthesized the developing epidermis and cis-regulatory elements genes involved this process well-characterized. Here, we report that known primary epidermal enhancer dispensable for transcriptional activation ebony (involved light-colored pigment synthesis) melanogaster. evidence was obtained introducing an approximately 1 kbp...
The ovipositors of some insects are external female genitalia, which have their primary function to deliver eggs. Drosophila suzukii and its sibling species D. subpulchrella known acquired highly sclerotized enlarged upon shifts in oviposition sites from rotting ripening fruits. Inside the ovipositor plates, there scale-like polarized protrusions termed "oviprovector scales" that likely aid mechanical movement size spatial distribution scales need be rearranged following divergence...
Cell death is a mechanism utilized by organisms to eliminate excess cells during development. Here, we describe novel regulator of caspase-independent cell death, Mabiki (Mabi), that involved in the repair head patterning defects caused extra copies bicoid Drosophila melanogaster. functions together with caspase-dependent mechanisms provide robustness
The model organism Drosophila melanogaster has become a focal system for investigations of rapidly evolving genital morphology as well the development and functions insect reproductive structures. To follow up on previous paper outlining unifying terminology structures male terminalia in this species, we offer here detailed description female D. melanogaster. Informative diagrams micrographs are presented to provide comprehensive overview external internal females. We propose collection...
Abstract Male genital structures are among the most rapidly evolving morphological traits and often only features that can distinguish closely related species. This process is thought to be driven by sexual selection may reinforce species separation. However, while genetic basis of many phenotypic differences have been identified, we still lack knowledge about genes underlying evolutionary in male organs organ size more generally. The claspers (surstyli) periphallic play an important role...
This paper deals with an education planning method of human operators considering production plans. The carry out machining operations by using manual machine tools based on their skills in target manufacturing systems. individual can obtain new to operate the receiving trainings. New is proposed mixed integer programming problems this research. problem determines suitable numbers trainings and that executed for productions. Objective functions are minimizing overtime hours maximizing sum...
Natural selection is assumed to act more strongly on X-linked loci than autosomal because the fitness effect of a recessive mutation X chromosome fully expressed in hemizygous males. Therefore, expected fix or remove mutations efficiently those autosomes. However, assumption that hemizygosity selectively accelerates changes allele frequency has not been confirmed directly. To examine this assumption, we investigated current natural chemoreceptor genes population Drosophila melanogaster by...
The model organism Drosophila melanogaster has become a focal system for investigations of rapidly evolving genital morphology as well the development and functions insect reproductive structures. To follow up on previous paper outlining unifying terminology structures male terminalia in this species, we offer here detailed description female D. melanogaster. Informative diagrams micrographs are presented to provide comprehensive overview external internal females. We propose collection...
A new tool allocation method is proposed in this paper to consider both the load balancing and optimization of a transportation based on mathematical problem. The consists two steps. In first step, individual tools are divided into sets 0-1 programming problem order balance total machining time by using reducing number processes. second allocated Machining Centers (MCs) quadratic assignment minimize distances jobs.
Abstract In the last 240,000 years, males of Drosophila simulans species clade have evolved striking differences in morphology their epandrial posterior lobes and claspers (surstyli). These changes most likely been driven by sexual selection mapping studies indicate a highly polygenic generally additive genetic basis. However, we limited understanding gene regulatory networks that control development genital structures how they to result this rapid phenotypic diversification. Here, used new...
Abstract While the majority of Drosophila species lay eggs onto fermented fruits, females D. suzukii pierce skin and into ripening fruits using their serrated ovipositors. The changes oviposition site preference must have accompanied this niche exploitation. In study, we established an assay to investigate effects commensal microbes deposited by conspecific heterospecific individuals, showed that presence on substrate enhances egg-laying melanogaster biarmipes , but discourages . This result...
Abstract Background The ovipositors of some insects are external female genitalia, which have their primary function to deliver eggs. Drosophila suzukii and its sibling species D. subpulchrella known acquired highly sclerotized enlarged upon shifts in oviposition sites from rotting ripening fruits. Inside the ovipositor plates, there scale-like polarized protrusions termed “oviprovector scales” that likely aid mechanical movement size spatial distribution scales need be rearranged following...