A5021158920- Viral Infections and Vectors
- Vector-borne infectious diseases
- Bird parasitology and diseases
- Mosquito-borne diseases and control
- Vector-Borne Animal Diseases
- Identification and Quantification in Food
- Genomics and Phylogenetic Studies
- Avian ecology and behavior
- Genetic diversity and population structure
- Coccidia and coccidiosis research
- Ichthyology and Marine Biology
- Amoebic Infections and Treatments
- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Malaria Research and Control
- Study of Mite Species
- Parasitic Infections and Diagnostics
- Yersinia bacterium, plague, ectoparasites research
National Institute of Infectious Diseases
2022-2025
Nihon University
2017-2025
Abstract Aim Macroecological analyses provide valuable insights into factors that influence how parasites are distributed across space and among hosts. Amid large uncertainties arise when generalizing from local regional findings, hierarchical approaches applied to global datasets required determine whether drivers of parasite infection patterns vary scales. We assessed haemosporidian infections a broad diversity avian host clades zoogeographical realms depict hotspots prevalence identify...
Avian haemosporidia have been reported in various birds of Japan, which is part the East Asian-Australian flyway and an important stopover site for migratory potentially carrying new pathogens from other areas. We investigated prevalence avian malaria injured wild birds, rescued Tokyo surrounding also evaluated effects migration by examining each status. 475 80 species were sampled four facilities. All samples examined haemosporidian infection via nested polymerase chain reaction (PCR)...
Abstract High pathogenicity avian influenza (HPAI) poses a significant threat to both domestic and wild birds globally. The virus, known for environmental contamination subsequent oral infection in birds, necessitates careful consideration of alternative introduction routes during HPAI outbreaks. This study focuses on blowflies (genus Calliphora ), particular nigribarbis , attracted decaying animals feces, which migrate lowland areas Japan from northern or mountainous regions early winter,...
Abstract The polymerase chain reaction (PCR) is a very powerful method to detect and identify pathogens. high sensitivity of the method, however, comes with cost; any millions artificial DNA copies generated by PCR can serve as template in following experiment. If not identified contaminations, these may result erroneous conclusions on occurrence pathogen, thereby inflating estimates host range geographic distribution. In present paper, we evaluate whether several published records avian...
Avian malaria has been a continuous problem in both wild and captive populations of penguins throughout the world. In Japan, where there are over 3000 penguins, avian (by Plasmodium spp.) haemoproteosis Haemoproteus have sporadically detected country. However, no comprehensive studies carried out, national status infection unknown until now. this study, prevalence lineage composition haemosporidian parasites was investigated Japan for first time. A total 1203 from 55 facilities were sampled...
During their blood-feeding process, ticks are known to transmit various viruses vertebrates, including humans. Recent viral metagenomic analyses using next-generation sequencing (NGS) have revealed that arthropods like harbor a large diversity of viruses. However, many these not been isolated or cultured, and basic characteristics remain unknown. This study aimed present the identification difficult-to-culture virus in NGS understand its epidemic dynamics molecular biology techniques....
Abstract Background The majority of penguins (Sphenisciformes) have evolved in areas with weak or absent transmission haemosporidian parasites and are usually naïve to avian infections. Plasmodium transmitted by mosquitoes, lethal malaria has been often reported captive many countries. related belonging Haemoproteus Leucocytozoon also detected but less than infection reports based solely on PCR-based diagnostics. It remains unclear if haemoproteids can complete their life-cycle produce...
Abstract Background Captive populations of penguins outside their natural distributions are often maintained in outdoor facilities, such as zoos and aquariums. Consequently, captivity constantly exposed to mosquito vectors risk avian malarial infection during active period from spring autumn, which can be lethal these naïve birds. Previous studies have investigated parasite prevalence mosquitoes or penguins, but simultaneous investigations, would crucial monitor the transmission dynamics...
Avian malaria is a mosquito-borne disease of birds caused by avian Plasmodium spp. in worldwide scale. Some naïve show serious symptoms which can result death. Surveillance vectors and parasites are important to understand control this disease. Although has been found Japan, detailed prevalence dynamics remained understudied. We aimed observe annual changes the abundance mosquitoes Japan. Mosquitoes were collected using dry ice traps over 10-year period, at fixed research area located...
ABSTRACT Avian haemosporidian parasites and avian pox virus (APV) are well‐known pathogens for their impact on populations, especially in oceanic islands where introduced show strong virulence endemic naïve birds. The Bonin Islands a group of 1000 km south Tokyo. Like the Hawaiian Islands, there many endangered species as well species, which have greatly affected native fauna. However, wild birds this archipelago had not been investigated. In study, we investigated prevalence APV among...
Although wild bird rehabilitation facilities are important for the conservation of species, individuals may be kept within long periods, consequently posing a risk to infected with pathogens which they not naturally exposed. In turn, novel introduced through rescued migratory species. Avian malaria and West Nile fever avian diseases transmitted by mosquitoes. To understand transmission dynamics such at facilities, ecology vector mosquitoes, including species composition, seasonality, feeding...
Migratory birds are important carriers of pathogens such as viruses, bacteria and protozoa. Avian haemosporidia have been detected from many wild Japan, but the infection status migratory transmission area still largely unknown. Gallinago snipes long-distance shorebirds, five species migrate to or through including Latham's snipe which is near threatened. Haemosporidian parasites in four were investigated understand role avian haemosporidia. Namely, this study aimed: i) investigate...
Widespread surveys of avian haemosporidia (Plasmodium, Haemoproteus, and Leucocytozoon) in wild birds have substantially advanced information on the haemosporidian fauna Japan. However, many areas bird species remain insufficiently investigated. Bird carcasses collected for personal specimen collection seldom reach academic audience particularly veterinary field. The presence was investigated these personally carcasses, order to better understand were donated through contact upon approval...
One captive musophagid bird at a zoological garden in Japan showed clinical symptoms and was found to be infected with avian haemosporidia. We subsequently collected blood from all birds kept the examined for haemosporidia using both microscopic molecular examination. Only Haemoproteus gametocytes were observed of two Guinea turaco (Tauraco persa). Three genetic lineages identified three turacos one lineage Leucocytozoon grey plantain-eater (Crinifer piscator). Detected identical completely...
The complete sequencing of mitochondrial DNA the Japanese Cormorant Phalacrocorax capillatus was performed using long PCR and primer walking methods. assembled genome 19,105 bp in length. It contained 13 protein-coding genes, two ribosomal RNA 22 transfer control regions. phylogenetic analysis obtained sequence showed that P. is closest to carbo.
Thirty years have passed since the last surveillance of mosquito fauna on entire Chichi-jima, Ogasawara Islands, Japan. Herein, we report results a study conducted Islands in 2015 and 2017. In this study, 2,371 individuals belonging to seven species three genera were collected, including 262 mosquitoes five collected 2,109 specimens representing six obtained The dominant dry-ice trap collections Culex boninensis Cx. quinquefasciatus, latter was yeast collections. Aedes albopictus, Ae....
We determined the complete mitochondrial DNA sequence of a subspecies great cormorant, Phalacrocorax carbo hanedae (Kuroda, 1925) using long PCR and primer walking methods. The genome was 19,020 bp in length contained 13 protein-coding genes (PCGs), two ribosomal RNA genes, 22 transfer control regions. It is basically consistent with characteristics genomes other Suliformes species. Phylogenetic analysis 12 species based on sequences concatenated confirmed monophyly P. ssp.
Background: Biting midges (Ceratopogonidae) are capable of transmitting a variety pathogens including viruses, trypanosomes and haemosporidia. The majority Haemoproteus parasites transmitted by biting predominantly the genus Culicoides known to cause significant physical reproductive impacts on both wild domestic birds. In Japan, had been detected from various avian hosts, but not arthropod vectors. this study, we investigated prevalence haemosporidia at an educational forest in central...