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Ryosuke Fujita Last modified date：2024.06.03

Associate Professor / Department of Bioresource Sciences
Faculty of Agriculture


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Homepage
https://kyushu-u.elsevierpure.com/en/persons/ryosuke-fujita
　Reseacher Profiling Tool　Kyushu University Pure
Phone
092-802-4970
Academic Degree
Doctor of Agriculture
Country of degree conferring institution (Overseas)
No
Field of Specialization
Medical entomology, Molecular biology, Cellular biology, Virology, Insect pathology
ORCID(Open Researcher and Contributor ID)
orcid.org/0000-0002-0098-8878
Total Priod of education and research career in the foreign country
00years00months
Research
Academic Activities
Reports
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Papers
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1. Ryosuke Fujita, Takuji Tachi, Masato Hino, Kosuke Nagata, Masahiro Saiki, Mizue Inumaru, Yukiko Higa, Kentaro Itokawa, Nozomi Uemura, Ryo Matsumura, Izumi Kai, Kyoko Sawabe, Mutsuo Kobayashi, Haruhiko Isawa, Takahiro Kusakabe, Kazunori Matsuo, Shinji Kasai, Blowflies are potential vector for avian influenza virus at enzootic area in Japan., Scientific reports, 10.1038/s41598-024-61026-1, 14, 1, 10285-10285, 2024.05, High pathogenicity avian influenza (HPAI) poses a significant threat to both domestic and wild birds globally. The avian influenza virus, known for environmental contamination and subsequent oral infection in birds, necessitates careful consideration of alternative introduction routes during HPAI outbreaks. This study focuses on blowflies (genus Calliphora), in particular Calliphora nigribarbis, attracted to decaying animals and feces, which migrate to lowland areas of Japan from northern or mountainous regions in early winter, coinciding with HPAI season. Our investigation aims to delineate the role of blowflies as HPAI vectors by conducting a virus prevalence survey in a wild bird HPAI-enzootic area. In December 2022, 648 Calliphora nigribarbis were collected. Influenza virus RT-PCR testing identified 14 virus-positive samples (2.2% prevalence), with the highest occurrence observed near the crane colony (14.9%). Subtyping revealed the presence of H5N1 and HxN1 in some samples. Subsequent collections in December 2023 identified one HPAI virus-positive specimen from 608 collected flies in total, underscoring the potential involvement of blowflies in HPAI transmission. Our observations suggest C. nigribarbis may acquire the HPAI virus from deceased wild birds directly or from fecal materials from infected birds, highlighting the need to add blowflies as a target of HPAI vector control..
Membership in Academic Society
  • the Japanese Society of Sericultural Science
  • THE JAPAN SOCIETY OF MEDICAL ENTOMOLOGY AND ZOOLOGY
  • THE MOLECULAR BIOLOGY SOCIETY OF JAPAN
  • Society for Invertebrate Pathology


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