Topic
Aedes hensilli
About: Aedes hensilli is a research topic. Over the lifetime, 8 publications have been published within this topic receiving 258 citations.
Papers
TL;DR: Infection rates of up to 86%, 62%, and 20% and dissemination rates of 23%, 80%, and 17% for Zika, chikungunya, and dengue-2 viruses respectively were found supporting the possibility that this species served as a vector during the Zika outbreak and that it could play a role in transmitting other medically important arboviruses.
Abstract: An epidemic of Zika virus (ZIKV) illness that occurred in July 2007 on Yap Island in the Federated States of Micronesia prompted entomological studies to identify both the primary vector(s) involved in transmission and the ecological parameters contributing to the outbreak. Larval and pupal surveys were performed to identify the major containers serving as oviposition habitat for the likely vector(s). Adult mosquitoes were also collected by backpack aspiration, light trap, and gravid traps at select sites around the capital city. The predominant species found on the island was Aedes (Stegomyia) hensilli. No virus isolates were obtained from the adult field material collected, nor did any of the immature mosquitoes that were allowed to emerge to adulthood contain viable virus or nucleic acid. Therefore, laboratory studies of the probable vector, Ae. hensilli, were undertaken to determine the likelihood of this species serving as a vector for Zika virus and other arboviruses. Infection rates of up to 86%, 62%, and 20% and dissemination rates of 23%, 80%, and 17% for Zika, chikungunya, and dengue-2 viruses respectively, were found supporting the possibility that this species served as a vector during the Zika outbreak and that it could play a role in transmitting other medically important arboviruses.
197 citations
TL;DR: Entomologic investigations implicated the native mosquito species, Aedes hensilli, a member of the Scutellaris Group of Aedes (Stegomyia), as a previously unrecognized epidemic vector of dengue viruses.
Abstract: A dengue fever/dengue hemorrhagic fever (DF/DHF) outbreak in Yap State caused by dengue-4 virus was confirmed serologically and by virus isolation from serum samples collected on each of three island groups. Most DF/DHF cases occurred during a three-month period between mid-May and early August 1995. Five fatal cases, three of which were in children between the ages of four and 11, occurred between June 20 and July 26. A serosurvey conducted in late August revealed anti-dengue IgM prevalence rates of 18% on Yap, 36% on Eauripik, and 6% on Woleai. The majority of residents (93-100%) on the three islands were positive for anti-dengue IgG antibodies, indicating widespread exposure to dengue viruses. The IgG titers indicative of secondary antibody response were noted on Eauripik (6.5%) and Woleai (17%), but were rare on Yap (0.7%). Entomologic investigations implicated the native mosquito species, Aedes hensilli, a member of the Scutellaris Group of Aedes (Stegomyia), as a previously unrecognized epidemic vector of dengue viruses. Aedes hensilli was the most abundant and widespread member of Ae. (Stegomyia) in Yap State, the only species of Ae. (Stegomyia) on Woleai, and the only mosquito species present on Eauripik. New distribution records for mosquito species are reported.
56 citations
TL;DR: Variation in cold hardiness was studied in the laboratory for the nondiapausing eggs of nine Aedes species from eastern Asia and Pacific islands, ranging from the tropics to the cool-temperate zone.
Abstract: Variation in cold hardiness was studied in the laboratory for the nondiapausing eggs of nine Aedes (Stegomyia) species from eastern Asia and Pacific islands, ranging from the tropics to the cool-temperate zone. Species included were Aedes aegypti (L.), Aedes albopictus (Skuse), Aedes flavopictus Yamada, Aedes galloisi Yamada, Aedes hensilli Farner, Aedes palauensis Bohart, Aedes paullusi Stone and Farner, Aedes riversi Bohart and Ingram, and Aedes scutellaris (Walker). For species with distributions covering two or three climatic zones, at least one population was included from each zone, except for Ae. aegypti (subtropical populations were unavailable). Some eggs of four species confined to the tropical zone survived short exposure to freezing temperature (> or = -5 degrees C) when humidity was high. There were inter- and intraspecies variations in cold hardiness of nondiapausing eggs. Cold hardiness in each climatic zone differed in that populations of species with more northerly distributions were more cold-hardy than species with southerly distributions. In Ae. albopictus and Ae. flavopictus that cover three climatic zones, populations from cooler regions were more cold-hardy than populations from warmer regions. A possibility of southern species without diapausing eggs to colonize temperate eastern Asia was discussed.
20 citations
15 Dec 2005
10 citations
1 Jan 2014
TL;DR: Aedes hensilli was the predominant species on Yap Proper, Ulithi Atoll, and it was also distributed on Romanum Island and Piis-Paneu Island (Chuuk State).
Abstract: Several investigations of mosquito fauna in the Federated States of Micronesia (FSM) have been conducted, but there is currently little information on the mosquito species, which may be the vector to dengue fever. This review is a summary of the geographical distribution and breeding sites of the mosquito species on four states: Yap, Chuuk, Pohnpei and Kosrae, the FSM. Major vectors for dengue fever and dengue hemorrhagic fever are Aedes aegypti and Ae. albopictus in urban areas of Southeast Asia and in the Western Pacific Resion. Aedes aegypti was collected on Pingelap Island (Pohnpei State) and on Kosrae Island (Kosrae State), and it was the predominant species on Pingelap Island. Aedes albopictus was collected on Weno Island (Chuuk State), Pohnpei Island and Kahlap Island (Mokil Atoll) (Pohnpei State), and on Kosrae Island (Kosrae State), and it was the predominant species on Kahlap Island and Kosrae Island. Entomological investigations designated the native mosquito species, Ae. hensilli, as a vector of the dengue virus on Yap Proper. Aedes hensilli was the predominant species on Yap Proper, Ulithi Atoll (Mogmog, Falarop, Asor and Fassarai Island) and Fais Island (Yap State) and Weno Island (Chuuk State), and it was also distributed on Romanum Island and Piis-Paneu Island (Chuuk State). Therefore, four states of the FSM seems to be highly dengue-sensitive. Environmental management programs are necessary to
5 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2015 | 1 |
| 2014 | 3 |
| 2011 | 1 |
| 2005 | 1 |
| 2001 | 1 |
| 1998 | 1 |