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Seven researchers Professor Kozo Watanabe, Yuma Hayashi from the Center for Marine Environmental Studies (CMES), Ehime University, Professor Toru Watanabe, Associate Professor Masateru Nishiyama from Yamagata University, Assistant Professor Masahiro Tokumura From University of Shizuoka, Sui Kanazawa, Bijon Kumer Mitra, from Institute for Global Environmental Strategies (IGES) visited Dhaka, Bangladesh from September 19 to 30, 2026 as part of the SATREPS project aimed at reducing antimicrobial resistance (AMR) risks in Dhaka. The Record of Discussions (R/D) for the SATREPS project was signed on February 25, 2026, and project activities commenced in April 2026 for a five-year period. The delegation also paid a courtesy visit to the Co-Vice Chancellor of the University of Dhaka. Furthermore, they visited the Institute of Epidemiology, Disease Control and Research (IEDCR) and the Department of Environment to discuss the objectives, scope, and planned activities of the SATREPS project.  Furthermore, the team conducted interviews with prospective candidates who may enroll as doctoral students at Ehime University, and held working meetings with University of Dhaka researchers who will participate in the SATREPS project. Furthermore, the delegation visited a private hospital in Dhaka, where they inspected the effluent treatment plant (ETP) and discussed potential sites for the installation of wastewater treatment facilities.  On the final day, a workshop was held with representatives from the Department of Environment (DOE), the Water Supply and Sewerage Authority (WASA), wastewater treatment companies, and hospitals. The workshop aimed to raise awareness of the risks of antimicrobial resistance (AMR) associated with inadequate wastewater treatment infrastructure in Bangladesh, as well as the potential risks posed by residual antibiotics in wastewater. In addition, participants discussed the challenges faced by relevant organizations in developing and maintaining appropriate wastewater treatment technologies and infrastructure. During the group discussions, participants shared their perspectives and concerns from the respective standpoints of government agencies, wastewater treatment companies, and medical institutions. Each group then presented the outcomes of their discussions. Through these activities, the participants were able to share a common understanding of the current situation and challenges surrounding hospital wastewater management in Bangladesh. Written and contributed by: Yuma Hayashi   
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From August 24 to 27, 2026, a group of researcher from University of Leeds visited Shikoku Region to conduct a tropicalization survey. Taking advantage of this opportunity, a joint survey was conducted by Ehime University, the University of Leeds, and the University of the Ryukyus. A total of 10 researchers and students had come together and conducted a marine survey off the coast of Kochi Prefecture, focusing on various marine organisms, including corals, brittle stars, and fishes.  We participated in boat diving at two locations, Kashiwajima and Okinoshima. We had originally planned to conduct shore diving in front of the Kuroshio Biological Research Institute, but due to the typhoon, EU team couldn’t join that site. The main research objectives of the University of Leeds were:
 Boat-diving survey at Kashiwajima and Okinoshima In addition, while traveling by boat between the survey sites, we not only discussed and confirmed the survey plans but also actively shared information about the organisms we had encountered underwater. This provided a valuable opportunity for researchers and students from the three universities to interact and deepen their connections beyond the boundaries of their respective institutions.  Daisuke, Kanei, and Ruki collected environmental DNA (eDNA) samples during the survey either from the shore or from a boat at survey sites. They also measured the temperature, pH, conductivity, and dissolved oxygen (DO) of the seawater collected at the same time. Researchers and students from other universities showed great interest in eDNA sampling and closely observed the process. In addition to the research activities, there were also many opportunities for interaction and knowledge exchange among the members. At the end of the boat diving activities, we visited Ashizuri Aquarium SATOUMI. The aquarium is famous for sea slugs, and I had the opportunity to see a variety of rare species. In addition, there were many cute and unique marine animals, and we were able to see the fish being fed. It was also a good opportunity for the international students to learn more about Japanese culture, and we all had a great time.  Click here to edit. After another day of surveying, we had dinner together at an izakaya. We enjoyed fresh sashimi unique to Kochi, as well as some of our favorite dishes at the restaurant. During dinner, we talked about our research, mutual friends and teachers, interesting stories, and much more! Finally, we became closer not only through our research activities, but also through spending time together in our daily lives. Lastly, we had a very enjoyable and meaningful time throughout these four days. Here, I would like to thank Maria sensei from the University of Leeds and the students from the University of Ryukyus for their cooperation and for making these four days so memorable. Thank you for eveything!  Written and contributed by: Senoo Ruki
From July 19 to 24, 2026, I had the opportunity to attend the 16th International Coral Reef Symposium (ICRS) in Auckland, New Zealand. Held every four years, ICRS is a major international conference that brings together coral reef scientists from around the world. Following the previous meeting in Bremen, Germany, this was the second in-person symposium since the COVID-19 pandemic. New Zealand lies in the Southern Hemisphere, meaning its seasons are the opposite of those in Japan. While I had always known this, experiencing it firsthand was something entirely different. The moment I arrived at the airport, the chilly winter air reminded me that I was far from home. Having left Japan in the middle of summer, I was surprised to find myself shivering in the cold.  Researchers from coral reef regions around the world attended the symposium, presenting studies from a wide range of marine environments, including the Pacific Ocean, Indian Ocean, Atlantic Ocean, and Caribbean Sea. The research topics and methodologies were equally diverse, ranging from traditional laboratory and field experiments to large-scale genetic analyses and even cutting-edge studies employing genome editing technologies. The symposium also provided valuable opportunities to reconnect with colleagues and friends from around the world. Many unexpected reunions made the meeting especially memorable and offered a chance to renew old friendships and strengthen professional networks.  I presented our research on the ongoing tropicalization of the western coast of Shikoku, Japan, as well as the results of our bacterial community metabarcoding analyses. Presentations at the symposium were allocated either 5 or 15 minutes, and I was fortunate to be assigned a 15-minute oral presentation slot. The symposium featured an impressive 1,480 presentations in total, including both oral and poster sessions. Across 14 parallel session rooms, lively discussions took place from morning until evening throughout the conference. Simply keeping track of the presentations I wanted to attend and moving between rooms was a challenge in itself. Among the many highlights of the meeting, one particularly memorable experience was the opportunity to speak with Dr. Cody Clements of the Georgia Institute of Technology, whose recent work on sea cucumber ecology and biology has attracted considerable attention. Meeting researchers whose papers I had been following closely was both inspiring and motivating.  As one might expect from New Zealand, a country renowned for its dairy industry, the food was excellent, and I thoroughly enjoyed every meal throughout the trip. Sharing meals with colleagues and fellow researchers provided a wonderful opportunity to discuss not only our research but also many other topics in a relaxed and friendly atmosphere. Unfortunately, I did not have much time to explore New Zealand beyond the conference venue during this visit. However, the experience left me eager to return in the future. Next time, I hope to venture further afield, including a visit to the South Island, and experience more of the country's remarkable natural beauty and culture.  Overall, attending the symposium was both an enjoyable and highly rewarding experience. In addition to sharing our research, I had the opportunity to learn from leading scientists, exchange ideas with researchers from around the world, and build new connections that will undoubtedly benefit my future work. The next International Coral Reef Symposium is scheduled to be held in Brazil in 2030. By then, I hope to continue advancing my research and contribute findings that will surprise and inspire the scientific community. The experience in Auckland has provided renewed motivation to pursue exciting and impactful research in the years ahead  Contributed and written by: Asst. Prof. Kohei Hamamoto
Posted by: Jomel Limbago I have received a very large number of inquiries and applications — several hundred so far this year— from prospective students wishing to apply with me as their prospective academic supervisor. I sincerely appreciate your interest in my laboratory and research activities.
I also apologize that I have not been able to respond to each inquiry individually. However, the number of available slots for the University Recommendation category is very limited, and I have already selected the candidates whom I will support for application through this route. Therefore, I regret to inform you that I am unable to accept additional candidates for the MEXT University Recommendation application. I kindly ask you to consider other options, such as applying through the Embassy Recommendation category, or seeking scholarship opportunities available in your own country. In addition, when doctoral student or postdoctoral researcher positions funded by research projects become available, we will announce them on the MECOH Lab' website and Facebook page. Please consider applying for such opportunities when they are advertised. Please note that there are currently no open positions. Thank you again for your interest and understanding. Kozo Watanabe (Professor, MECOH lab)  Under the scorching heat of summer, MECOHLab held its annual Summer Camp, one of the laboratory's most anticipated traditions. More than just a recreational event, the Summer Camp provides an opportunity for members to take a well-deserved break from research, strengthen friendships, and build a more connected and supportive laboratory community. On July 13–14, 2026, lab members traveled to Rainbow Highlands for two days filled with exciting activities and meaningful interactions. This year's camp was made even more special with the participation of two MECOHLab alumni, Daiki Tanumura and Haruma Sanuki, who returned to spend time with current lab members. Their visit gave everyone a chance to reconnect, reminisce about their time in the laboratory, and share their experiences after graduation. The camp began with a lively barbecue, where everyone enjoyed delicious food, refreshing drinks, and conversations outside the usual research setting. Throughout the day, members also participated in friendly ball games, creating an atmosphere of teamwork, laughter, and healthy competition. As the sun went down, the fun continued into the evening with homemade curry, refreshments, and card games that kept everyone entertained late into the night. It was also a meaningful occasion to celebrate the exciting paths our alumni have taken. Daiki shared his experiences as he continues his doctoral studies at Osaka University, while Haruma Sanuki prepares for a new chapter with the Japan International Cooperation Agency (JICA), where he will soon begin his work in Africa. We are proud of their achievements and wish them every success in their future endeavors. We hope they carry the spirit of MECOHLab with them wherever their journeys take them. The annual Summer Camp reflects MECOHLab's belief that a strong research group is built not only through scientific collaboration but also through genuine friendships and mutual support. Events like these provide valuable opportunities for members from different backgrounds and academic levels to connect, helping foster a positive and welcoming atmosphere within the lab. As another memorable Summer Camp came to an end, everyone returned refreshed, re-energized, and ready to tackle new research challenges. We look forward to continuing this wonderful tradition and creating even more unforgettable memories together in the years ahead. 
 Members of the MECOH Laboratory actively participated in WET2026. Yuma Hayashi, Dewi Gustari, Md. Shafiujjaman, and Jomel Limbago presented their respective research during the conference, while Diana Rose Mamawal attended the event as a conference participant. Kozo Watanabe, Head of the MECOH Laboratory, also attended and participated in the conference. The scientific program consisted of both oral and poster presentation sessions. The oral presentations followed a three-minute presentation format, in which presenters provided a concise overview of their research, highlighting its significance, objectives, key findings, and potential implications. This session was designed to introduce each study to the audience and did not include a question-and-answer segment.   The poster presentation session, held over one hour, provided an interactive platform for participants to engage in scientific discussions with researchers, students, and faculty members from universities and research institutions around the world. Unlike the oral presentations, the poster session allowed attendees to ask questions, exchange ideas, provide constructive feedback, and discuss potential applications and future directions of the research. It also offered valuable opportunities for networking, knowledge sharing, and the establishment of future research collaborations. The research titles of the members are as follows: Yuma Hayashi presented his research entitled “Assessment of Antibacterial Activity and Antibiotic Resistance Gene Expression Response of Intermediate Products During Ozonation of Enrofloxacin.” Dewi Gustari presented “Genotype–Phenotype Linkage of Antimicrobial Resistance in Escherichia coli Using Whole-Genome Sequencing: A One Health Perspective.” Md. Shafiujjaman presented “Mechanistic Insights into Matrix-Dependent Ozonation for Antibiotic and ARG Removal from Wastewater,” while Jomel Limbago presented “Genomic Colocalization of Adaptive and Species-Divergent Loci Is Strongest During Incipient Speciation.” Their presentations showcased the diverse research interests of the MECOH Laboratory and promoted discussions with experts from various institutions.  The two-day conference concluded with the presentation of the WET2026 Excellent Presentation Award, which recognizes outstanding presentations delivered during the conference. A total of 24 presenters received the award in recognition of the quality, scientific merit, and impact of their research presentations. Among the awardees were Yuma Hayashi and Jomel Limbago of the MECOH Laboratory, whose presentations were selected for this distinction.  The participation of the MECOH Laboratory members in WET2026 strengthened scientific collaborations, facilitated the exchange of knowledge with researchers, and provided an opportunity to showcase the laboratory's research on an international platform.
Written and Contributed by: Diana Rose Mamawal Matsuyama, Ehime — Members of the Molecular Ecology and Health (MECOH) Laboratory participated in the 3rd CMES Workshop for Launching Interdisciplinary Communication and Knowledge Sharing (CLICKs) on July 7, 2026, joining fellow researchers and students from across the Center for Marine Environmental Studies (CMES).  CLICKs is an annual event that promotes in-person communication, knowledge sharing, and interdisciplinary collaboration among researchers, particularly early-career scientists and students. This year's workshop brought together participants from the three CMES divisions: Ecosystem Dynamics, Environmental Chemistry and Ecotoxicology, and Ecosystem Health Sciences. The workshop officially opened with welcoming remarks from Associate Professor Yasutsugu Suzuki. One of the featured sessions was the laboratory introduction, where participating laboratories introduced their research themes, laboratory culture, and collaborative activities. Representing MECOH Laboratory, Von Carlo Dela Torre presented an overview of the laboratory's research and activities. Assistant Professor Kohei Hamamoto also introduced the collaborative research project, "Collaborative Research in Ecology and Oceanography: Dispersal Estimation and Connectivity," highlighting the value of interdisciplinary approaches in addressing ecological questions.  A major highlight of the workshop was the poster presentation session. Unlike conventional conferences, CLICKs encourages participants to present ongoing research and emerging ideas. MECOH Laboratory was well represented by PhD, master's, and undergraduate students, who shared their research and actively exchanged ideas with participants from different scientific disciplines.  The workshop concluded with closing remarks by Professor Kozo Watanabe, Head of the Office for International and Social Cooperation and leader of the MECOH Laboratory. MECOH hopes that this event will strengthen interdisciplinary partnerships while fostering an environment of collaboration, innovation, and scientific exchange among the next generation of researchers.  Ms. Rose Angeli Rioja, a faculty member at the University of the Philippines Los Baños, has recently finished a two-week training program hosted by the MECOH Laboratory. The training, which took place from June 8 to 19, 2026 focused on field sampling of eDNA, DNA extraction and quantification, and sea cucumber mitogenome assembly. Ms. Rioja delivered an introductory seminar on the first week of the training. The seminar provided an overview of the status of sea cucumber research and aquaculture in the Philippines particularly for an emerging culture species Stichopus cf. horrens. Gaps in sea cucumber research in the Philippines were also presented. Laboratory sessions provided Ms. Rioja with practical experience in laboratory workflows. She received hands-on training on DNA extraction and quantification from Asst. Prof. Hamamoto and Ruki Senoo (B4). With guidance from Asst. Prof. Hamamoto, Jomel Limbago (D1) and Jerica Isabel Reyes (D5), she also conducted a preliminary assembly and annotation of the sea cucumber mitogenome.  For the field-based training, Ms. Rioja joined the team of Asst. Prof. Kohei Hamamoto and students Moemu Tsukamoto (M1), Ruki Senoo, Daisuke Murakami (B4), and Kan-ei Nakatsu (B4) in collecting eDNA samples across three locations: Ikata (June 9), Kochi (June 16), and Ainan (June 17). This work involved water filtration using Sterivex filters, and water quality monitoring using a multiparameter checker. These were followed by snorkelling activities, wherein sea cucumber species common to both Japan and the Philippines were observed. Sea cucumber species not found in the Philippines were also observed, particularly in Ainan.  Aside from field sampling, the team also visited Uwajima Fisheries High School on June 17 to present their current research findings. Asst. Prof. Hamamoto conducted a seminar and demonstrated sample collection using Sterivex filters.This engagement provided students with insights on the utility of eDNA metabarcoding in aquatic research.  Overall, the 2-week training served as a vital platform for knowledge sharing and the establishment of professional ties to support future collaborative research. This also served as an opportunity to explore various research methodologies that can be adapted in Philippine sea cucumber research.  We are seeking one Malaysian PhD candidate at Molecular Ecology and Health (MECOH) Lab (PI: Prof Kozo Watanabe) of Ehime University, Japan, to participate in a funded research project on controlling zoonotic malaria in Sabah, Malaysia, under the Science and Technology Research Partnership for Sustainable Development (SATREPS) program ( https://www.amed.go.jp/en/news/release_20240418.html ). The primary focus will be on field surveys and genetic analysis of vector mosquitoes in Sabah. Application deadline: 15 June 2026.
Description of the position The selected PhD candidate will conduct mosquito habitat surveys and collections, gather wide-area environmental information using satellite imagery, and apply machine learning to predict risks, ultimately creating a risk map for zoonotic malaria in Sabah. The candidate will also perform genetic analyses of mosquitoes to estimate migration pattern between local mosquito populations, identify mosquito host animals through residual DNA, and determine malaria infection rates in mosquitoes. The candidate will be enrolled as a PhD student at Ehime University, travelling between Japan (for lab work, data analysis and thesis writing, 80%) and Malaysia (for field work and lab work, 20%). Experience in field work (sample collections), DNA experiments, and knowledge of entomology will be advantageous. Those with a Malaysian driving license are also at an advantage. Application deadline and start date of the position:
Eligibility:
Contract details:
Application and selection processes: Applicants are encouraged to send the files below to Prof. Kozo Watanabe by email ( [email protected] ).
If you have any questions regarding the said position, please contact the email address above. ---------------------------------------------------------------------------------------------------------------------------- Overall framework of the SATREPS project. Please note that the selected candidate will carry out the research described in the "Description of the position" above. Project title: Project for the Sustainable Control of Zoonotic Malaria through an Integrated Approach Project duration: April 2025-March 2030 (5 years) Participating institutions: Nagasaki University, Ehime University, Tokyo Women's Medical University (Japan), and Universiti Malaysia Sabah (Malaysia) PI: Kaneko Osamu (Nagasaki University) Summary: In recent years, cases of "zoonotic malaria" in humans caused by non-human primate Plasmodium species have become increasingly frequent. In Malaysia, in particular, thousands of individuals are infected annually with Plasmodium knowlesi parasites, with reported cases of knowlesi malaria rising rapidly across Southeast Asia. However, conventional malaria control methods have proven ineffective in addressing the zoonotic malaria epidemic, highlighting the need for the development of effective control strategies. This research project will focus on the following activities in Sabah, Malaysia:
 By Kyle Young Low On March 18, Prof. Kozo Watanabe, Miku, and I returned to Miyagi prefecture in Tohoku to collect yet another set of wetland water samples. With most of the wintering migratory birds having already moved on, the wetlands felt calmer, quieter… almost like a reset button had been pressed. That being said, this sampling trip serves as a comparative data point to study the ecological impact of wintering birds in a Japanese wetland. Same place, different season, whole new story. So, it's a perfect time to take a second look at the same wetland but without its wintering guests.  Gone are the wintering birds Revisiting the exact same sites from last year, we couldn’t help but notice the striking absence of flocks filling the sky. Interestingly, the water itself looked much cleaner this time. And with no birds to disturb, I finally got the chance to step right into the wetland to collect the samples. Apparently, the water was surprisingly shallow! Big thanks to Prof. Kozo Watanabe, who jumped right into the sampling with us. Safe to say, his field ecologist instincts are still very much alive and kicking. Even though most migratory birds had left for their nesting grounds, a few wintering stragglers along with some local residents made an appearance. Although not in great numbers, there are still some wintering birds left behind. While on the field, we made a quick lunch break at a local spot. We enjoyed some western-influenced Japanese cuisine (洋食).  Japanese Pork chop with spinach on the side from locally sourced livestock After wrapping up the field work, we returned to our collaborator's lab (Sano-sensei's Environmental Water Quality Lab) at Tohoku University and began sample processing in earnest. Of course, none of these would possibly work without the many people coming together to make this project happen. On behalf of the team, we would like to thank Prof. Sano for his gracious support, Prof. Omura for his subject matter expertise, Dr. Takahashi for his technical know-how on eDNA, and Assoc. Prof. Mohan for the insightful conversations we've shared.
Interlaboratory programs like this is a great experience for Ph.D students. Let us continue to foster this interlaboratory partnership and perhaps .  09/03/2026 ICRL EU-UNPAD Director, Prof. Kozo Watanabe, visited Padjadjaran University (UNPAD) in Bandung City on March 9th 2026. This visit aimed to establish further collaboration between the Faculty of Medicine at UNPAD and Ehime University. One of the agenda items was to finalize the cross-appointment of Dr. Lia Faridah as a researcher at both UNPAD and Ehime University. This visit on the dean's office of the Faculty of Medicine was well received by Dr.med. Muhammad Hasan Bashari, Dr., M.Kes. as the Research, Partnership, and Innovation Manager. Through this meeting, all sides are hoping to expand the coordination between UNPAD and Ehime University.  Prof. Kozo's visit was continued in UNPAD Graduate School on the afternoon, with him giving a Guest Lecture. This Guest Lecture titled “Ecological Approaches to Mosquito Diseases Control” was attended by UNPAD Graduate students. In this lecture, Prof. Kozo discussed the performed method of mosquito vector controls in the Philippines, Indonesia, and Japan, which has collaborated with Ehime University. 09/03/2026 Continuing yesterday's visit on UNPAD, Prof. Kozo visit Functional Nanopowder University - Center of Excellence (FiNder U-CoE) Center in UNPAD Jatinangor Campus on March 10th 2026. While there, Prof. Kozo was also accompanied by ICRL EU-UNPAD Coordinator, Dr. Lia Faridah, and staff, M. Akbar Thufail, to have a tour on the facility. The visiting group was received by the head of FiNder U-CoE, Prof. Dr. I Made Joni, M.Sc., and staff, Prof. Dr. Camelia Panatarani, M.Si., to have a brief discussion and introduction.  After the discussion, Prof. I Made Joni showed the group around the facility to see the working lab of FiNder U-CoE, such as the top-down processing lab, bottom-up molecular lab, and battery-cell lab. Some of the nanotechnology and services have great potential for collaboration in the future. After finishing the discussion with the FiNder U-CoE team, Prof. Kozo continued to the lecture building of UNPAD Faculty of Medicine. Prof. Kozo was invited to give another Guest Lecture to the UNPAD undergraduate medicine students about Ecological Approaches to Mosquito Diseases Control. Prof. Kozo also gave some introductions about ICRL and other collaborations to the audience. Three researchers from the Center for Marine Environmental Studies (CMES), Ehime University — Professor Kozo Watanabe, Professor Tatsuya Kunisue, and Associate Professor Rumi Tanoue — visited Dhaka, Bangladesh from March 1 to 4, 2026 as part of the SATREPS project aimed at reducing antimicrobial resistance (AMR) risks in Dhaka. It is noteworthy that the Record of Discussions (R/D) for the SATREPS project was signed on February 25, 2026, and full project activities are expected to commence in April 2026 for a period of five years.
The team visited Daiki Axis Bangladesh, a company expanding its wastewater treatment business, including septic tank systems, across South Asia. Discussions were held regarding potential collaborative research under this project, and the delegation toured hospital wastewater treatment facilities installed by the company. Given that Daiki Axis is headquartered in Matsuyama, Ehime Prefecture — the same city as Ehime University — a strong and fruitful partnership is highly anticipated going forward. At the University of Dhaka, the team toured several facilities where research equipment will be delivered under the SATREPS project to establish the Dhaka Water Environment Research Center. The delegation also paid courtesy visits to the Vice Chancellor of the University of Dhaka and the Head of the Department of Fisheries. In addition, meetings were held with multiple local companies that may serve as potential suppliers of research instruments and consumables for the project. Furthermore, the team conducted interviews with prospective candidates who may enroll as doctoral students at Ehime University, and held working meetings with University of Dhaka researchers who will participate in the SATREPS project. The delegation also conducted a field inspection of the Buriganga River, one of the key research sites designated under the project.  Laguna, Philippines – From February 8 to 10, 2026, Prof. Kozo Watanabe and MECOH lab member Jomel Limbago visited the Laguna campus of De La Salle University. During the visit, Prof. Watanabe attended student proposal defenses and participated in research meetings to monitor ongoing projects and explore future partnerships. For Jomel, who was visiting DLSU for the first time, the stay included tours of various laboratories and insect breeding facilities, particularly those focused on mosquitoes. He also assisted in setting up Linux systems and installing the necessary software packages for population genomic analyses, with a focus on reduced-representation sequencing approaches. Key DLSU officials present during discussions included Dr. Divina M. Amalin, Dr. Mary Jane C. Flores, Dr. Isagani Janairo, Dr. Thaddeus Carvajal, Dr. Billy Joel Almarinez, and Dr. Karen Lacerna. Iloilo, Philippines – On February 11–12, 2026, Prof. Watanabe and Jomel continued their visit at ISUFST in Barotac Nuevo, Iloilo. They were welcomed by senior faculty member Dr. Dennis K. Gomez, who was also Jomel’s undergraduate professor. The MECOH delegation was formally received by University President Dr. Nordy Siason and College of Fisheries and Aquatic Sciences Dean Dr. Rolindo Demo-os. ISUFST hosted a mini-symposium on Aquatic Science, Evolution, and Biodiversity, featuring presentations from both institutions. Prof. Watanabe introduced the MECOH laboratory and discussed the group’s research on antimicrobial resistance, while Jomel presented his work on speciation and adaptation. Following the symposium, the delegation toured ISUFST facilities and learned about the university’s ongoing initiatives to strengthen its research capacity. The visit reinforced MECOH’s strong partnership with DLSU and laid a promising foundation for future collaboration with ISUFST. These engagements are expected to foster sustained scientific exchange and joint research initiatives that support the laboratory’s long-term research goals in the Philippines.
 I am a researcher specializing in metagenomics with a focus on the detection and environmental fate of antimicrobial resistance genes (ARGs). My work investigates the dissemination of ARGs from hospital wastewater systems into downstream surface water environments, aiming to better understand the dynamics of resistance spread across interconnected ecosystems.
Using a comprehensive suite of computational genomics and bioinformatics tools, I analyze complex metagenomic datasets to characterize resistomes, assess microbial community structure, and track the persistence and mobility of resistance determinants. My research integrates high-throughput sequencing, advanced data analytics, and environmental microbiology to generate insights into ARG transmission pathways and associated public health risks. Through interdisciplinary approaches combining environmental science, microbiology, and computational biology, I contribute to advancing our understanding of antimicrobial resistance in aquatic environments and support the development of evidence-based mitigation strategies. Prepared by Kyle Young Low  Prof. Kozo and his new friends Prof. Kozo Watanabe, Miku, and I took a trip to the Tohoku region to look at some wintering water birds. Between December 2nd and the 7th, together with our Tohoku University counterpart, we've started a new study on the "Impact of transboundary water bird migration on introducing non-native viruses into wetland waters". Being a foreigner, I am absolutely clueless when it comes to the major lakes and wetlands found in Japan. Thankfully, I have Prof. Sano and Prof. Omura from Tohoku University to help in that matter, and they've settled on a Ramsar-designated wetland at Kurihara town, Miyagi, called Izu-numa & Uchi-numa lake. The site is only an hour's drive away from the major city center of Sendai city, where we were based. Joining us were the two professors and a master's student, Yasugi.  From left: Miku, Prof. Daisuke Sano, Yasugi, Prof. Tatsuo Omura, some random tourist, and me surveying the site at Izu-numa and Uchi-numa wetland. Upon arriving, we were greeted by a flock of friendly ducks that aren't camera shy. Not one to waste a good opportunity, Prof. Kozo took a selfie (the picture featured above) to commemorate the start of a good sampling trip.  Prof. Omura walking towards the site as the friendly ducks waddled along to make space for their visitors.  Prof. Sano seen here describing the type of sites we should access while Prof. Omura and I listen on. Since the birds move freely along the wetlands, choosing sites with high sightings of these birds is key. After a quick discussion followed by a drive around the site, we have identified five areas and an additional low bird density area from a neighbouring lake: Lake Naga-numa.  It was reported that about 101,310 wintering birds visited the wetland in December. We certainly felt their presence there. Miku had firsthand experience capturing this natural phenomenon on camera while using a spotting scope.  Miku spotting birds in the distant.  Ducks, swans, and geese were spotted. Although the birds are the highlight of our trip, equally important are the associated viruses and microbes that these wintering water birds bring. So, we sampled the water wherever the birds went. The work was grueling under the rainy weather, but thankfully, I had great help from Yasugi and Miku. Once we got all the samples we needed. We packed our stuff and headed straight back to our collaborator's lab at Tohoku University. There, we've processed the wetland water samples using the equipment and chemicals graciously provided by Prof. Sano's team at Environmental Water Quality Lab and by another long-time collaborator, Dr. Takahashi.  Dr. Takahashi seen here guiding Miku on the experimental set-up at Prof. Sano's Lab. While processing the water samples at an unfamiliar lab, I felt cold, made worse by the frigid weather and the flu that I had caught a week earlier. Yet, the help, generosity, and friendship given by everyone made the sampling trip a resounding success. Research is already tough on its own, and without friends, many things simply could not be done. This sentiment was also echoed by Miku. "In Izunuma and Uchinuma, where I visited for sampling, I observed many bird species. It was challenging to photograph moving birds with a telescope. In the lab, I performed environmental DNA filtration and virus concentration. Carrying 20L of water samples was tough, but with assistance from Tohoku University, I managed to conduct the experiments myself. I believe this experience will be valuable for my future research at Ehime University." - Miku  Having gained the ability to access faraway facilities and execute experiments is definitely a positive experience for us. I felt that inter-lab collaboration programs like this are an opportunity that could expand the range of research I could do while building up my network. My knowledge range on delicious Japanese food has also expanded (left: Pork nabe hot-pot, right: takoyaki). I am grateful that MEcoH has laid the foundation for collaborations like this and hope that I, too, could one day return the favor by expanding its collaborative range further.
The Center for Marine Environmental Studies (CMES) hosted the “JSPS Core-to-Core Symposium on One Health Approaches to Chemical Risk Management in Ehime 2025” on November 18 and 19.  The event kicked off with a opening speeches by Prof. Kozo, Prof. Guo, and Assoc. Prof. Yasutsugu. Over the two-day program, about 120 participants attended, featuring 20 oral presentations and 50 poster presentations. Active discussions on regional challenges and practical solutions, and strengthening international research networks about intersecting topics on human health, the environment, and ecosystems, and promoting sustainable development.  The plenary talk was delivered by Dr. Jose Isagani B. Janairo from De La Salle University (Philippines), who presented an insightful and cutting-edge talk on predicting chemical activity based on molecular complexity, attracting strong interest from the audience.  Many other researcher too had an opportunity to present their findings. Speakers Whereas the poster sessions were led primarily by students and early-career researchers covering a diverse array of studies such as infectious diseases, environmental pollution, marine ecology, chemical risk assessment, etc. The sessions served as a valuable platform for building future international networks with many young researchers exchanging ideas on analytical methods and field challenges.  Poster Presenters This year's JSPS once again attempted at advancing international collaborative research and strengthening cross-border research networks, either through science communication or a good conversation over a meal. CMES will continue to provide opportunities for discussion and collaboration, further reinforcing international and interdisciplinary networks and contributing to sustainable development in South and Southeast Asia.
By 垣鍔こころ Kokoro Kakitsuba From November 2 to 8, 2025, Dr. Kozo Watanabe, Irfan (Researcher), and I visited the Philippines.  _______________________________________________________________________________________________________________ November 3 – Visit to the University of the Philippines Mindanao We met up with Von (Research Student), who was conducting research locally, and visited the University of the Philippines Mindanao. We toured the Philippine Genome Center Mindanao, and had several discussions about research with the Dean and the Assistant to the Executive Director, and faculty members.  The laboratories were highly advanced, and I remember feeling excited about the opportunity to gain hands-on experience with a variety of molecular biology experiments.  Interior of University of the Philippines Mindanao's laboratory We've visited the laboratories, the dean’s office, had lunch with the university staff, and gone sightseeing afterwards. The people at the university were very kind and cheerful. Over traditional Filipino dishes, we discussed Filipino culture and research, enjoying a wonderful time together. In the afternoon, Von guided us on a tour around Davao, where I even tried durian and pomelo for the first time. _______________________________________________________________________________________________________________ November 4 – Setting Mosquito Traps and Visiting Zoo Parks On November 4, we visited the Philippine Eagle Center, Malagos Garden Resort, and Davao Crocodile Park & Zoo to set up mosquito traps. While exploring the parks, we saw many adorable animals, which made the process of choosing trap locations both productive and enjoyable. It was my first time seeing the assembly and placement of mosquito traps, and I found the process fascinating and learned about how different types of traps and their placement can affect the samples collected. We ended the day with dinner overlooking Davao’s night view, enjoying a variety of dishes and a memorable evening together. _______________________________________________________________________________________________________________ November 5 – Sample Collection (Day 1) On this day, Dr. Watanabe went to Manila, and the work continued with Irfan, Von, and me. We collected the traps we had set the previous day and observed the mosquito sampling process for the first time. Finding mosquitoes among many other insects proved challenging and required careful attention. Afterward, we recharged at the popular local chain Jollibee before continuing our research at the University of the Philippines Mindanao.  _______________________________________________________________________________________________________________ November 6 – Sample Collection (Day 2) and Laboratory Work We continued with sample collection and lab work at the university. While the work was demanding, it was very enjoyable to conduct experiments while discussing with everyone. I also participated in the experiments under Von’s guidance. Although some tasks were challenging due to my limited experience, Von and Irfan’s support made the process very rewarding. This experience made me look forward to conducting experiments in Japan as well. After the experiments, we visited a nearby café with university members. Over coffee and cake, we exchanged stories about life in the Philippines and Japan, creating a meaningful cultural exchange. Later, we met Prof. Thaddeus Carvajal at SM Mall for casual dinner. Watching Irfan passionately discuss mosquito research inspired me to study harder so that I can one day discuss research with the same enthusiasm.  _______________________________________________________________________________________________________________ November 7 – Farewell to Davao and Trip to Manila On November 7, we said goodbye to Von with a handshake, promising to meet again in Japan. After arriving in Manila, we reunited with Dr. Watanabe. He suggested we visit the famous San Agustin Church, and Irfan and I had a great time sightseeing and taking photos in front of its beautiful Spanish Baroque architecture. Reflection During this visit, I experienced Filipino culture, daily life, and, most importantly, the warmth of the people. I am deeply grateful to the locals who kindly spoke to me despite my limited English and taught me the joy of conversation. I would also like to thank Von for guiding me through experiments and showing me the fun side of Davao City. Irfan for always supporting and cheering me up with a smile, and Dr. Watanabe for giving me this rare opportunity and gently guiding my growth. I will use the lessons learned from this trip to improve both my English and research skills, striving to become a capable researcher in the future.  On October 20–23, 2025, Jomel attended the Japan PhD Student Meeting in Evolutionary Biology held at the Okinawa Institute of Science and Technology (OIST). The event brought together PhD students in evolutionary biology from across Japan for four days of presentations, discussions, and community building. Research presentations were held on the second and third days, where Jomel also joined the poster session to share his ongoing work. Beyond the academic program, the group explored one of the world’s largest aquariums, the Okinawa Churaumi Aquarium, an experience that added a fun and memorable highlight to the trip. The conference provided not only academic learnings but also opportunities to form meaningful connections, friendships, and collaborations. These experiences, combined with the knowledge gained, will help strengthen our future contributions to evolutionary biology.
Professor Kozo Watanabe paid a courtesy visit to President Evaristo A. Abella, Vice-President for Academic Affairs Ravelina R. Velasco, Vice-President for Research and Extension Emmanuel M. Vera Cruz, and Dean of the College of Fisheries Hazel Monica Peralta at Central Luzon State University (CLSU) in the Philippines on November 5–7, 2025. During the visit, the parties reaffirmed their commitment to advancing preparations for the Ehime University (EU) –CLSU International Collaborative Research Lab (EU-CLSU ICRL), slated to be established in 2026. The agenda included site visits to prepare facilities, the promotion of joint research, and the fostering of academic exchange. The visit was arranged by Professor Khristina Judan Cruz—formerly a postdoctoral researcher at the MECOH Lab—who holds a cross-appointment at both universities. Professor Watanabe received a very warm and generous welcome. By 住岡田莉茄 Rina SUMIOKADA  2025年10月19日(日曜日)に今年もCMESの研究室が集まってソフトボール大会が開催され、70名以上の方が参加してくれました！ On Sunday 19 October 2025, the CMES laboratories came together again this year for the annual softball tournament, this time attended by more than 70 people! 天気予報では昼過ぎから雨の予報で開催できるか不安もありましたが、みんなの思いが届いたのか試合終了まで雨は降らず、過ごしやすい気候で試合ができました。 The weather forecast predicted rain from mid-afternoon, so there was some anxiety about whether the event could be held, but everyone's hopes were answered because the sky cleared up, so the game was played in pleasant weather.  最近新しく仲間に入ったドクター生やB3生も参加してくれて、チーム内での交流も盛んにおこなわれました。 Newly joined doctor students and B3 students also took part, and there was a lot of chatter within the team. 今年の結果は… 今年は惜しくも4位という結果にはなりましたが、ホームランが出たり、みんなバットにボールを当てて全速力で走ったりしました！守備でも好プレーがあり、勝つことはできませんでしたがとても良い試合でした。 たくさん応援の声が響き、みんな楽しく最後までプレーできていました⚾ Aaand this year's results... It was a close fourth place, there were some home runs and everyone did hit the ball on the bat and ran as fast as they could! Although we didn't win, we did play well defensively. Overall, it was a very good game. There was a lot of cheering and everyone had fun playing to the end ⚾.  また来年も力を合わせて楽しみましょう！ Let's join forces and have fun again next year!   MEcoH continues to advance research on antimicrobials and the spread of antimicrobial resistance (AMR) in the environment. This is a pressing global challenge, and tackling it requires collaboration across disciplines and institutions.  Professor Ryo Honda during his seminar presentation On 17 October, we were honoured to host Professor Ryo Honda from Kanazawa University, one of our key collaborators. During MEcoH’s weekly seminar, he delivered a talk titled “Fate of AMR of Wastewater Origin,” sharing his team’s latest findings and vision for understanding and addressing AMR. As a board member of both the Japan Wastewater Surveillance Association (JWWSA) and the Japan National Council for Promoting Wastewater Surveillance, Professor Honda’s insights were invaluable.  from left Prof. Kozo Watanabe providing Japanese translateion to the main speaker, Kenneth Bongulto The main event took place on 18 October (Saturday) at the Ehime Medical Association Hall, where the Ehime One Health Research Association hosted a seminar themed “Antimicrobial Resistance.” Four presentations were featured, including one by MEcoH's Kenneth, translated by Professor Kozo, titled “Differences in Co-selection and Localization of Antimicrobial Resistance and Virulence Genes among Acinetobacter Isolates from Patients, Pig Waste, and the Environment.” MEcoH remains firmly committed to the One Health approach—working to protect human, animal, and environmental health by preventing the loss of effectiveness of antimicrobial drugs and ultimately saving lives. This is a problem at a global scale. We simply can't do this alone.  From left: Kenneth, Diana, and Dewi discussing their research plans as Prof. Ryo Honda listens on over some Yakitori (焼き鳥) chicken skewers. So, let us pave a way and solve this thing together. Whether in the lab or over a meal.
By 佐藤佑紀 Yuki SATO On August 28 and 29, Dr. Kozo Watanabe, Tetsu Kuzukawa (M1), Jomel (D1), and Yuki Sato (B4) participated in the research meeting and river survey of the Habitat Reincarnation Research Institute held in Kyoto.  Commemorative photo after the workshop: From left to right: Dr. Kozo Watanabe, Dr. Shinji Takahashi, Dr. Sohei Kobayashi, Jomel, Tetsu Katsakawa, Dr. Yasuhiro Takemon, Dr. Mikio Kato, Yuki Sato At the research meeting on the 28th, we discussed research reports, information sharing, and future research policies with Dr. Yasuhiro Takemon (Osaka Metropolitan University), Dr. Sohei Kobayashi (Kyoto University), Dr. Shinji Takahashi (Tohoku University), and Dr. Mikio Kato (Osaka Metropolitan University).  Kibune River headwaters In the river survey on the 29th, we conducted surveys in the headwaters of the Kibune River in the upper reaches of the Kamo River, the Takano River, and the Kamo River. In the survey, we conducted a comparative survey of benthic animal communities at different points of sediment (gravel bottom and gravel bottom) and measured environmental parameters (water depth, flow velocity, water temperature, etc.).  Group photo at the Kamo River Through this research meeting and river survey, we were able to gain a variety of knowledge and experience through exchanges with Dr. Takemon and other professors. We will use what we learned this time to our future research and devote ourselves even more!
 Diana Rose Mamawal recently joined MEcoH as a PhD candidate, bringing her research experience in microbial source tracking and antibiotic resistance involving ESBL-producing Escherichia coli. Originally from the Philippines, she holds a Bachelors in Science (BS) Biology from the University of Southeastern Philippines and a Master's in Microbiology from the University of the Philippines Diliman. For her master’s research, Diana focused on identifying sources of microbial eukaryotic contamination in a river system in Metro Manila using metagenomic approach.
Before joining MEcoH, Diana worked as a researcher at the Institute of Biology, University of the Philippines Diliman. There, she was involved in a project using 16S rRNA gene-based metagenomics to trace bacterial contamination in Manila Bay and its surrounding rivers. Currently, she is involved in a project focusing on identifying bacterial indicator species and antibiotic resistance genes (ARGs) for cross-sectoral comparison. The project aims to assess the spread of ARGs within the Chuyo region of Ehime Prefecture, contributing to a broader understanding of environmental antimicrobial resistance dynamics. CLOSED on 30 Sep 2025 The Molecular Ecology and Health (MECOH) Lab at Ehime University, Japan (PI: Prof. Kozo Watanabe), is accepting applications for a doctoral position in the field of Molecular Ecology in Rivers. The position includes full financial support. Description of the position: The successful candidate will conduct field surveys using riverine organisms (macroinvertebrates, bacteria, and fish) and environmental DNA (eDNA). The main focus will be on the bioinformatics analysis of next-generation sequencing (NGS) data, such as metabarcoding, metagenomics, ddRADseq, and transcriptomics, to understand biodiversity (genetic and species diversity) and evolutionary patterns. The successful candidate will be expected to contribute to a recently funded project entitled “Optimization of River Habitat Structure Based on Functional Diversity of Aquatic Insect Communities.” The aim of this research is to propose a molecular biological approach to evaluate the various functions of river ecosystems, such as organic matter decomposition and nutrient cycling, which have lost habitat diversity (e.g., rapids, pools, backwaters) due to human influence and are no longer able to demonstrate these functions. If the selected candidate contributes to the above-mentioned project, he/she will be able to propose and carry out other research projects, such as NGS-based analysis of fish and bacteria at community and population level, if he/she wishes. Application deadline and start date of the position:
Eligibility:
Contract details:
Desired Qualifications (Not all must be met)
Application and selection processes: Applicants are encouraged to send the following files to Prof. Kozo Watanabe by email ([email protected]). In the "Subject" field, please write: “MECOH PhD Application”.
If you have any questions regarding the said position, please contact the email address above.   A new Malaysian PhD candidate has arrived at MEcoH! Ahmad Irfan bin Abdul Razak, specializes in entomology, focusing on insect diversity, distribution, systematics, phylogeny, morphometrics, and vector surveillance. Irfan holds a Bachelor of Science (Honours) in Animal Resource Science and Management from Universiti Malaysia Sarawak, where his undergraduate research investigated the faunistic composition of parasitic wasps across different habitats in West Sarawak. His master’s thesis examined the systematics and phylogeny of lantern flies in Sabah and Sarawak, Malaysian Borneo.
Previously, he worked with the State Health Department of the Federal Territory of Labuan, where he focused on insects of medical importance, including mosquito surveillance, dengue and malaria risk assessments, and ecological field surveys. He was also involved in monitoring other public health pests such as rodents, flies, termites, and fleas. Currently, Irfan is researching the sustainable control of zoonotic malaria through field and genetic studies on vector mosquitoes in Sabah, Malaysian Borneo. |
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