Maria Eduarda Alves dos Santos, JSPS Postdoctoral Research Fellow

PhD in Marine Science, University of the Ryukyus, Japan
MSc. in Coastal and Oceanic Systems, Federal University of Paraná, Brazil
BSc. in Oceanography, Federal University of Santa Catarina, Brazil

I am interested in understanding the processes that shape the origin and distribution of marine species. Currently, my work focuses on the two most common protists associated with corals: dinoflagellates of the family Symbiodiniaceae and the apicomplexan lineage of corallicolids. My research combines fieldwork and different “omics” approaches, including genomics, transcriptomics, and spatial metabolomics, to shed light on the diversity and functions of these symbioses. I have worked as a postdoctoral researcher at the University of the Ryukyus and as a visiting fellow at the Naturalis Biodiversity Center in the Netherlands. I am passionate about Brazilian music, good beer, and summertime (even better when combined).

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Courtney M. Dunphy, JSPS Postdoctoral Research Fellow

PhD in Ecology, Evolution and Marine Biology, Northeastern University, USA
BSc. in Environmental Sciences, University of Texas, USA

I am broadly interested in coral reef microbial ecology and how bacteria and other microorganisms interact with and regulate coral reef ecosystems. Specifically, how coral-associated microbial communities across coral species provide resistance and resilience to both anthropogenic and environmental stressors from the perspective of genetics, spatial patterns, and functional diversity. In particular, my research at OIST relates to uncovering the underlying mechanisms structuring coral microbiomes and elucidating their functional contributions to coral host health and climate resilience. Outside of the lab, you’ll find me hanging out with my dog, Chopper, hiking, biking, and/or exploring any and all food and beverage scenes.

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Jinyeong Choi, Postdoctoral Researcher (from March 2021)

PhD & MSc. in Entomology, Seoul National University, South Korea
BSc. in Applied Biology, Kangwon National University, South Korea

I am interested in the evolution of plant-feeding insects and their microbial symbionts. Specifically, my research focuses on understanding the role of symbiont replacements and host niche expansion on diversification of scale insects. Previously, I have studied the taxonomy and phylogeny of scale insects, especially mealybugs (Pseudococcidae) and soft scales (Coccidae). In my research, I try to combine comparative genomics, microscopy, insect systematics, ecology, and phylogenomics to approach my scientific questions. To have even more fun, I enjoy outdoors activities such as swimming, skin diving, fly fishing, as well as collecting scale insects!

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Dewi Langlet, Staff Scientist

PhD & MSc. in Environmental Sciences, Angers University, France

I am interested in the role of protists in benthic biogeochemical cycles. My research is especially focused on the effects of anthropogenic disturbances such as anoxia, heatwaves and microplastic pollution on foraminifera and their symbionts. I am studying their ecology, metabolism, behavior as well as their impact on sediment geochemistry to better understand their role in benthic ecosystem functioning. I previously worked as a JSPS fellow at JAMSTEC and as a postdoctoral researcher at Lille University. Besides science, I enjoy rugby, photography, and playing board games.

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Yumiko Masukagami, Research Technician

PhD in Veterinary Microbiology, University of Melbourne, Australia
BSc. in Veterinary Science, University of Miyazaki, Japan

I am interested in host-symbiont interactions and reductive genome evolution in bacteria. My research focuses on how the simplest self-replicating bacteria such as Mycoplasma spp. persist in the host and how bacteria become symbiotic in the host cells using multi-omics and microscopy approaches. I previously worked as a postdoc at the National Institute of Animal Health and in the Membranology Unit at OIST. Apart from science, I enjoy my time with family and our cats, badminton, and exploring Okinawa.

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Kimberlie Ward, Research Technician (maternity leave)

MRes & BSc. (Hons) in Marine Biology, Plymouth University, UK

I am interested in evolution and the marine environment. I obtained my MRes in 2015 looking at the origin of synaptic transmission in Porifera. In my spare time, I enjoy baking, the outdoors, and playing football with OIST FC.

Chihiro Arasaki, Research Unit Administrator


I joined the Husnik Unit in April 2020 when Prof. Husnik joined OIST. My job as a research unit administrator is to provide administrative support for the unit members. Outside work, I enjoy baking breads and biscuits, and knitting.

Kamila Kozik, Rotation Student (2021)

MSc. in Animal Bioengineering, Warsaw University of Life Sciences, Poland

I have a master's degree in animal bioengineering, but I decided to follow the path of cell biology and that is why I had worked at IIMCB in Warsaw for 4 years on a project devoted to receptor tyrosine kinase endocytosis in human cancer cells. I have experience in synthesis of nanoparticles and had tried to use multi-walled carbon nanotubes as a drug delivery system. I also like confocal microscopy and anything that can be fluorescently stained and visualized. At Husnik Unit I am developing my interest in marine microorganisms, in particular, I will focus on imaging of coral symbioses. In my spare time, I enjoy cooking, spending time outdoors and playing board games with my friends.

Sourjya Baibhabee Nath, Rotation Student (2021)

MSc. & BSc. in Biological Sciences, Indian Institute of Science Education and Research, India

I am interested in animal behavior and genetics. I did my master’s project partly at the Seoul National University in South Korea and at the Oklahoma State University in the US. I studied the relationship between MHC-II alleles and kin recognition behavior in Bufo gargarizans tadpoles. During my rotation in the Husnik Unit, my aim is to perform comparative genomics and microscopy of various endosymbiotic bacteria found in bacteriocytes of mealybugs. During my leisure time, I enjoy cooking new cuisines and going out drinking with friends.

Yong Heng Phua, Research Intern (2021)

BSc. student of Biology, Hokkaido University, Japan

I am an undergraduate student of Biology from Hokkaido University. I have been working on different species of Coolia dinoflagellates during my undergraduate course. During my internship, I plan to explore the interactions between marine dinoflagellates from Okinawa and their endosymbionts. When I am not working, I am usually cooking or hiking in the mountains.


Koh Ishikawa, Research Intern (2020)

BSc. student of Medial Biosciences, Imperial College London, UK

I am currently an undergraduate studying Medical Biosciences at Imperial College London (UK). I am from Okinawa, but I have been studying abroad for most of my life, so it was nice to stay in Okinawa for an internship. During the internship, I mostly worked with marine protists such as diplonemids and foraminifera. I was involved in projects on 3D electron microscopy (SBF-/FIB-SEM) and I also helped establish single cell genomics and transcriptomics protocols for a pipetting robot in the lab. In my free time, I enjoy playing basketball, volleyball and going fishing. Joining the sports clubs in OIST is definitely recommended!