Abstract:To evaluate vector situations in the disaster areas of the Great East Japan Earthquake we conducted eld studies on the occurrence of mosquitoes in Rikuzentakata City, Iwate Prefecture and Kesennuma City, Miyagi Prefecture almost every three weeks from June to October and in Minamisoma City, Fukushima Pefecture in September 2011.For adult collections we placed dry-ice baited CDC-light traps at selected sites and captured totals of 3,088 Culex pipiens, 1,430 Cx. tritaeniorhynchus, 62 Aedes albopictus, 58 Cx. inatomii, 13 Anopheles sinensis, and 8 Ae. togoi. e rst two species were captured in large quantities. Mean adult density of Cx. pipiens pallens, Cx. tritaeniorhynchus and Cx. inatomii at Tsunami sub-area was signi cantly higher than No Tsunami and boundary sub-area. In
Abstract:We surveyed the ies in the tsunami disaster region a er 2011 the Great East Japan Earthquake. Mass occurrence of ies were observed there, which mainly consist of Calliphora nigribarbis in early spring, Phormia regina in spring-summer and Musca domestica in summer. Of these, P. regina was the most abundant species, and emerged from dead shes dispersed from destroyed marine product processing factories.
We investigated the occurrence of mosquitoes in both disaster areas of the 2011 Great East Japan earthquake and tsunami and the 2016 Kumamoto earthquake in the summers after the disasters respectively. In the former area, Culex pipiens group was the most common taxa in adult stage (157.01 individuals per trap per day; 82.55%). In larval stage, Cx. pipiens gr., Cx. tritaeniorhynchus and Anopheles sinensis were collected. While in the latter area, Aedes albopictus (19.29; 62.21%), Cx. pipiens gr. (5.23; 16.87%) and Armigeres subalbatus (4.34; 14.0%) were common in adult catch. The larvae of the three species were also commonly collected in the larval sampling. We compared the mosquito's occurrence between the two areas to find that abundance and species composition were completely different. In the 2011 Japan earthquake and tsunami area, a great number of comparatively large sized water bodies were made by the tsunami, and they became good habitats for Cx. pipiens gr. In contrast in the Kumamoto earthquake area, there were collapsed houses and a large number of small artificial containers left there as well as the tarpaulins used to cover damaged property, all of which served as good breeding sites for Ae. albopictus.
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