Mosquitoes collected on Pohnpei Island, Mokil Atoll and Pingelap Atoll, Pohnpei State, the Federated States of Micronesia (Diptera: Culicidae)

抄録

Mosquito larval surveys were carried out on Pohnpei Island, Mokil Atoll and Pingelap Atoll, Pohnpei State, the Federated States of Micronesia in November 2007 and August 2010. On Pohnpei Island, a total of 1,161 larval mosquitoes belonging to six species were collected at 59 various natural and artificial habitats. They were identified as Aedes albopictus, Ae. hakansoni, Ae. oakleyi, Culex quiquefasciatus, Cx. maplei and Cx. annulirostris. Aedes albopictus was only collected in two habitats, a small plastic container and a tire. It may be notable that Ae. albopictus and Ae. oakleyi were newly reported in Pohnpei State. Aedes hakansoni was the predominant species. On Mokil Atoll, a total of 682 larval mosquitoes belonging to three species were collected at 49 habitats. They were identified as Ae. albopictus, Ae. marshallensis and Cx. quiquefasciatus. Aedes albopictus was collected in 20 habitats (40.8%) that were of small or medium size. Aedes marshallensis was also collected from small- and medium-sized habitats. On Pingelap Atoll, a total of 870 larval mosquitoes belonging to four species were collected from 46 habitats. They were identified as Ae. aegypti, Ae. marshallensis, Ae. vexans noctunus and Cx. quiquefasciatus. Among them, Ae. aegypti was the predominant species which was collected in 21 (45.7%) small to large habitats. Aedes marshallensis was also collected from a wide range of habitat sizes. Mokil Atoll and Pingelap Atoll are highly dengue-sensitive, because Ae. albopictus and Ae. aegypti were widely distributed on them. Efforts should be taken to reduce potential breeding sites for Aedes mosquitoes in these areas.