八重山群島の蚊科に関する研究 : 2. 石垣島で 1975 年および 1976 年に採集したイエカ族の蚊について

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In 1975 and 1976,a brief mosquito survey was carried out in Ishigakijima, the southern Ryukyus. Human- and dry ice-baited net-traps, unbaited net-trap and larval dipping were employed as collecting methods. The results were as follows : 1. Ten 5-hour nocturnal and six 2-hour daytime human-baited net catches were made during April, July and August 1976 and a total of 549 females consisting of 22 species was taken. In an urban area, Arakawa, the predominant species in the nocturnal catches were Cx. p. fatigans and Ar. subalbatus, together making up 91% of the total catch. In a mountain village, Hoshino C, Cx. p. fatigans was also predominant, forming 49% of the total catch. Ae. vexans nipponii and Cx. bitaeniorhynchus were the other common mosquitoes. In a forest area, Hoshino A and Noromizu, the species collected by nocturnal catches in considerable numbers were Ma. uniformis, Cx. bitaeniorhynchus, Cx. tritaeniorhynchus, Cx. pseudovishnui, Cq. crassipes and Ar. subalbatus. The predominant species in the daytime catches were Ae. riversi and Tr. bambusa. 2. One 5-hour nocturnal dry ice- and cowbaited net-trap catches were made at Hoshino A on April and July 1976,and a total of 113 and 950 female mosquitoes was collected respectively. The major mosquitoes were Cx. tritaeniorhynchus, Ma. uniformis, Cx. pseudovishnui, Ae. v. nipponii, Cq. crassipes, Mi. luzonensis and Cx. bitaeniorhynchus. 3. Seven 12-hour nocturnal unbaited net-trap catches were also tried at Hoshino A, on July and August. A total of 30 mosquitoes consisting of 10 species of 5 genera were found in the traps. They were small numbers of Ae. riversi, Ur. ohamai, Ur. macfarlanei, Cx. bitaeniorhynchus, Cx. tritaeniorhynchus, Cx. pseudovishnui, Cx. tuberis, Cx. fuscocephala, Cq. crassipes and Mi. elegans. 4. From April 1975 to August 1976,85 light-trap collections were made at four different areas and a total of 2,185 mosquitoes representing 20 species of 7 genera was taken. There was a marked difference between predominant mosquito species taken in the urban area, Misaki, and the forest and irrigated areas, Noromizu, Kabira and Nagura. On the urban area, 90% of the total catch was Cx. p. fatigans, while on the forest and irrigated areas, Cx. tritaeniorhynchus (29% of the total catch in the areas), Cx. pseudovishnui (29%), Ma. uniformis (10%), Ae. v. nipponii (6.0%) and Mi. luzonensis (6.0%) were predominant species.
1978-12-15

八重山群島の蚊科に関する研究 : 2. 石垣島で 1975 年および 1976 年に採集したイエカ族の蚊について

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