New Records of Mosquito Species for Different Islands of the Ryukyu Archipelago, Japan

Toma, Takako; Miyagi, Ichiro; Tamashiro, Mikako; Higa, Yukiko

doi:10.2987/10-6075.1

Cited by 8 publications

(8 citation statements)

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“…However, Japan has experienced a steady increase in the number of imported cases, mainly from South and Southeast Asian countries [15][16][17]. Despite only sporadic abundance of Aedes aegypti, the species Aedes albopictus is widespread across Honshu Island and all western parts of Japan, theoretically allowing for chains of dengue transmission to exist [18][19][20][21][22][23]. Dengue was eliminated in the country by 1945 and transmission has not been observed for 70 years [24]; however, a German traveler visiting Japan in the summer of 2013 was later diagnosed with DENV2 infection upon returning to Germany [25].…”

Section: Introductionmentioning

confidence: 99%

Assessing dengue control in Tokyo, 2014

2019

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Background In summer 2014, an autochthonous outbreak of dengue occurred in Tokyo, Japan, in which Yoyogi Park acted as the focal area of transmission. Recognizing the outbreak, concerted efforts were made to control viral spread, which included mosquito control, public announcement of the outbreak, and a total ban on entering the park. We sought to assess the effectiveness of these control measures. Methodology/Principal findings We used a mathematical model to describe the transmission dynamics. Using dates of exposure and illness onset, we categorized cases into three groups according to the availability of these datasets. The infection process was parametrically modeled by generation, and convolution of the infection process and the incubation period was fitted to the data. By estimating the effective reproduction number, we determined that the effect of dengue risk communication together with mosquito control from 28 August 2014 was insufficiently large to lower the reproduction number to below 1. However, once Yoyogi Park was closed on 4 September, the value of the effective reproduction number began to fall below 1, and the associated relative reduction in the effective reproduction number was estimated to be 20%–60%. The mean incubation period was an estimated 5.8 days. Conclusions/Significance Regardless of the assumed number of generations of cases, the combined effect of mosquito control, risk communication, and park closure appeared to be successful in interrupting the chain of dengue transmission in Tokyo.

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Section: Introductionmentioning

confidence: 99%

Assessing dengue control in Tokyo, 2014

2019

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“…D e biodiversity, distribution and ecology as well as taxonomy of mosquitoes of the Ryukyu Archipelago, Japan are well studied. To date, the Ryukyu Archipelago consisting of 77 mosquito species including subspecies in 17 genera, and their habits and habitat have been well-documented (Miyagi et al, 1992;Reinert and Harbach, 2005;Tanaka, 2003;Toma and Miyagi, 1986;Toma et al, 2011). To ascertain the utility of DNA barcoding for mosquito identi cation, 228 specimens from 37 species of the genera Anopheles, Aedes and Culex from nine islands of the Ryukyu Archipelago were examined in the present study.…”

Section: Phylogenetic Analysismentioning

confidence: 99%

“…e mosquito fauna of di erent islands in the Archipelago are rich and well studied, consisting of 77 species including the subspecies of 17 genera (Miyagi et al, 1992;Reinert and Harbach 2005;Tanaka, 2003;Toma and Miyagi, 1986;Toma et al, 2011).…”

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confidence: 99%

“…However, to date, no study using DNA barcoding has yet been conducted for the identication of mosquito species in Japan. One hundred twenty-two species including subspecies of mosquitoes are known in Japan including the Ryukyu Archipelago (Kamimura, 2009;Reinert et al, 2009;Tanaka et al, 1979;Toma and Miyagi, 1986;Toma et al, 2011). e Ryukyu Archipelago, consisting of approximately 160 islands, lies in a curved island chain between Taiwan and the Kyushu District of Japan, extending about 1,000 km from 24 to 28 N, and 122 to 132 E (Fig.…”

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DNA barcoding for identification of mosquitoes (Diptera: Culicidae) from the Ryukyu Archipelago, Japan

Taira

Toma

Tamashiro

et al. 2012

Jap. J. Sanit. Zool.

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Abstract:e utility of cytochrome c oxidase subunit I (COI) DNA barcoding for the identi cation of 37 mosquito species belonging to the genera Anopheles (6 spp.), Aedes (14 spp.) and Culex (17 spp.) including subspecies from nine islands of the Ryukyu Archipelago, Japan was examined. A 658 bp fragment of the COI gene was sequenced from 228 specimens. Nucleotide sequence divergences were calculated using the Kimura-two parameter (K2P) distance model and a neighbor-joining (NJ) phylogenetic tree analysis was performed to provide a graphic display of the patterns in divergence among species. e mean intraspeci c variations of 35 species including the medically important vector species showed a less than 2 range with 0 1.5 divergences, but higher divergences of more than 2 were detected in Ae. aureostriatus okinawanus Bohart (2.2 ) and Cx. hayashii ryukyuanus Tanaka et al. (3.3 ). ey showed di erences in divergence between specimens from di erent islands. All 37 species were discriminated as distinct clusters in the NJ tree. e results in this study prove the utility of DNA barcoding for identi cation of mosquitoes from the Ryukyu Archipelago, Japan.

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“…Frog‐biting midges (Diptera, Culicomorpha, Corethrellidae) form a family of small midges with larvae inhabiting small standing water bodies and hyporheic zones of tropical streams and adult females feeding on blood from frogs and toads (Borkent, ). Together with members of two genera of Culicidae (Borkent & Belton, ; Toma et al , ), they are unique among blood‐feeding dipterans in initially locating their hosts by sound rather than by chemical or visual cues, being attracted to the male mating calls (Bernal et al , ; Borkent, ). The family comprises 107 described recent species and seven fossil species, which are all assigned to the single genus Corethrella Coquillett (Borkent, , ; Borkent & Grafe, ; Yu et al , ; Amaral & Pinho, ).…”

Section: Introductionmentioning

confidence: 99%

Two new species of fossil Corethrella Coquillett from Late Eocene Rovno amber, with a species‐level phylogeny for the family based on morphological traits (Diptera: Corethrellidae)

Baranov

Kvifte

Perkovsky

2016

Systematic Entomology

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Species in the genus Corethrella Coquillett, the only genus in the family Corethrellidae, feed on the blood of frogs and toads and are unique among Diptera in locating their hosts by sound. Their fossil record goes back to the Cretaceous and comprises seven previously described species from various amber deposits. Herein, we present the first records of Corethrella from Late Eocene Rovno amber (35 Ma), with the description of two new species: Corethrella sontagae sp.n. based on a single male, and Corethrella rovnoensis sp.n. based on a single female. A revised key to fossil species of Corethrella is given. Phylogenetic relationships within Corethrella are investigated based on Bayesian and parsimony analysis, including the new data. All species groups recognized by Borkent (2008) are recovered as monophyletic, with the exception of the drakensbergensis group, which is found to be a paraphyletic grade. Both of the newly described species can be accommodated within modern species groups: C. sontagae shows affinities with the quadrivittata group and C. rovnoensis with the rotunda group. This published work has been registered in ZooBank, http://zoobank.org/urn:lsid:zoobank.org:pub:AE394C59-775F-42DC-A5A8-AF9C91E16464.

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New Records of Mosquito Species for Different Islands of the Ryukyu Archipelago, Japan

Cited by 8 publications

References 7 publications

Assessing dengue control in Tokyo, 2014

Assessing dengue control in Tokyo, 2014

DNA barcoding for identification of mosquitoes (Diptera: Culicidae) from the Ryukyu Archipelago, Japan

Two new species of fossil Corethrella Coquillett from Late Eocene Rovno amber, with a species‐level phylogeny for the family based on morphological traits (Diptera: Corethrellidae)

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