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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Anopheles walkeri ： ウィキペディア英語版 Anopheles walkeri ''Anopheles walkeri'' (Theobald 1901) is found predominantly throughout the Mississippi River Valley,〔 with its habitat ranging as far north as southern Quebec, Canada.〔 The eggs of ''A. walkeri'' are laid directly on the water surface in freshwater swamp habitats.〔 Since its eggs are not resistant to desiccation, this species is restricted to swampy regions with plenty of water. ''A. walkeri'', as with many other anophelines, begins to become active later in the evening than most other mosquito species in its range. This species becomes especially active late at night when in search of a blood meal.〔 Feeding activity is affected greatly by environmental conditions within its microclimate. Wind, low humidity and cool temperatures (around 10 °C and below), are all negatively correlated with feeding aggression.〔 ==Life Cycle== ''Anopheles walkeri'' is a multivoltine species.〔 It produces a hardy winter egg which differs morphologically from the more vulnerable summer eggs by having enlarged floats on the dorsal side.〔 By overwintering in egg form, this species is able to mature through one full larval generation before hibernating adults of other species are able to become active. The multivoltine life cycle means this species is active during both the swampy, open water conditions of early spring, as well as later in the year after the swampland has become thickened with plant growth. It takes about 10 days to mature through the larval stages and pupate, dependent on temperature and water conditions.〔 Adults will typically mate within a few hours of emergence from their pupated form.〔 The females then begin to seek out a blood meal to provide necessary protein to facilitate egg development. The female will then rest while the eggs develop. Once mature, the eggs are oviposited and the female begins the process all over again, feeding and laying for the 40 days or so that it lives for.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Anopheles walkeri」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.