Searching for a sign of exotic Aedes albopictus (Culicidae) introduction in major international seaports on Kyushu Island, Japan

Autor: Toshihiko Sunahara, Hitoshi Kawada, Jinping Hu, Kyoko Futami, Noboru Minakawa, Chao Yang
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Male
Insecticides
Topography
Heredity
Philippines
RC955-962
Population genetics
Distribution (economics)
Transportation
Disease Vectors
Mosquitoes
Haplogroup
Insecticide Resistance
Geographical Locations
Medical Conditions
Japan
Aedes
Arctic medicine. Tropical medicine
Medicine and Health Sciences
Phylogeny
Data Management
Islands
education.field_of_study
biology
Ecology
Eukaryota
Phylogenetic Analysis
Thailand
Insects
Phylogenetics
Fixation (population genetics)
Genetic Mapping
Geography
Infectious Diseases
Engineering and Technology
Female
Public aspects of medicine
RA1-1270
Research Article
Computer and Information Sciences
Aedes albopictus
Asia
Arthropoda
Population
Mosquito Vectors
Disease cluster
Genetics
Animals
Evolutionary Systematics
education
Ships
Taxonomy
Evolutionary Biology
Landforms
Population Biology
business.industry
Public Health
Environmental and Occupational Health
Organisms
Genetic Variation
Biology and Life Sciences
Geomorphology
biology.organism_classification
Invertebrates
Insect Vectors
Species Interactions
Haplotypes
Vector (epidemiology)
People and Places
Earth Sciences
Haplogroups
business
Zoology
Entomology
Population Genetics
Microsatellite Repeats
Zdroj: PLoS Neglected Tropical Diseases, Vol 15, Iss 10, p e0009827 (2021)
PLoS Neglected Tropical Diseases
ISSN: 1935-2735
1935-2727
Popis: Background The Asian tiger mosquito, Aedes albopictus, has spread around the world. The migration was mainly mediated by maritime transportations. This species is known as an efficient vector for arboviruses, and it was responsible for the recent dengue outbreak in Tokyo, Japan. As the vector competence varies among geographical populations, and insecticide resistant populations have emerged, it is important to reveal their movements. The present study uses molecular techniques to search for a sign of introduction of an exotic population in three major international seaports on Kyushu Island. Methodology/principal findings Adults of Ae. albopictus were sampled around the international seaports of Fukuoka, Kitakyushu, and Nagasaki. Pairwise fixation indexes were estimated between the sampled populations based on 13 microsatellite markers. There was no clear genetic differentiation between distant and port populations in Kitakyushu and Nagasaki. However, the analysis found one distinct group near the container terminal in Fukuoka, which handles international freight containers mainly from adjacent countries. DNA samples were also obtained from Goto, Tsushima, Honshu, Ryukyu, Thailand, and the Philippines; and a cluster analysis and discriminant analysis revealed that the distinct group in Fukuoka did not belong to these groups. Combined with the results of phylogenetic analysis based on CO1, these results implied that this group originated from one Asian temperate region outside of Japan. Neutrality test and mismatch distribution analysis suggested that the establishment of this group was not recent. Conclusions/significance The present study found a sign of Ae. albopictus introduction from a temperate region of Asia through maritime freight container transportation. The genetically distinct group found in Fukuoka likely originated from a temperate region outside of Japan. Maritime container transportation may introduce to Japan mosquitoes with greater vector competence/insecticide resistance. This is the first study to describe the spatial population structure of Ae. albopictus in Japan using molecular techniques.
Author summary Aedes albopictus is an invasive species and an efficient disease vector. The bioecological traits of this species and human-mediated transportations have fueled its worldwide spread. Because the levels of vector competence and insecticide resistance vary among geographical strains, the worldwide migration of this species is a concern for public health and vector control. While numerous studies have been done in non-native areas, within its native areas in Asia movements have not been explored. This study used molecular techniques to search for signs of introduction of an exotic population through three major international seaports on Kyushu Island, Japan. The present study found a genetically distinct group of Ae. albopictus near the container terminal in Fukuoka. The study suggests that its origin was one temperate region of East Asia outside of Japan, and the establishment of this group was not recent. As vector competence varies among different populations and the knock down resistance gene has been reported from some populations outside Japan, the risk of introducing mosquitoes with greater vector competence/insecticide resistance needs to be considered. This is the first study to describe the spatial population structure of Ae. albopictus in Japan using molecular techniques.
Databáze: OpenAIRE
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