埃及斑蚊,英文名為yellow fever mosquito,學名為Aedes aegypti,是白紋伊蚊的近親。658Please respect copyright.PENANAtSpoA7e0AY
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(圖1)男性品種不會叮人,只有女性品種才會叮人,藉著吸血等途徑傳播登革熱(Dengue Fever)等疾病。658Please respect copyright.PENANAAdMrqy6ETa658Please respect copyright.PENANAJGKfLxcYGl
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殺蟲劑雖能殺滅蚊子,但蚊子亦逐漸展示出對殺蟲劑的抗藥性。658Please respect copyright.PENANAvAyS4jwZ42
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而基於殺蟲劑會污染環境及危害部份雀鳥昆蟲健康關係,建立另類對付播毒蚊子的方法可謂有著絕對的迫切性。658Please respect copyright.PENANAHTfMFbiStX
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(圖2)有見及此,Oxitec公司(現為美國公司收購)培養出埃及斑蚊OX513A品種。658Please respect copyright.PENANAWTV5WyB30E
牠們在幼蟲的時候需要四環黴素(Tetracycline)才能成功生長。在實驗室培植的時候,研究人員會在食物裡提供四環黴素,但當他們被放到野外的時候,便再也沒能取得足夠的四環黴素,沒能順利生長成為蚊子。658Please respect copyright.PENANAAXOcLxufKv
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男性埃及斑蚊OX513A品種與女性正常品種交配的話,將有機會產生正常品種及OX513A品種的蚊卵。658Please respect copyright.PENANAhOS6DfB0K7
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在野外缺乏四環黴素的情況下,正常品種有86–88%成功長大為蚊子,而OX513A品種則只有3-4%的成功率。658Please respect copyright.PENANAhZJ0aX1qu4
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以這個方式推算下去的話,蚊子下一代的比率將會大幅度減低。658Please respect copyright.PENANAurYVjtcBkJ
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(圖3)Oxitec公司在2010年英國開曼群島藉著此方式消除80%野外埃及斑蚊。658Please respect copyright.PENANA0qdJSkKv75
而亦在2013年巴西巴伊亞州順利用上同樣方式消除~90%野外埃及斑蚊。658Please respect copyright.PENANA2F7BQLOf8C
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今年2020年8月,他們同樣依這種方式在美國佛羅里達發放男性男性埃及斑蚊OX513A品種。658Please respect copyright.PENANA99r4I4AebD
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此舉泛起不少反對聲音,不乏違反動物權利及人權等等。658Please respect copyright.PENANAjJLIgXolNO
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亦有人認為此舉會破壞生態平衡,奈何此方法只會滅殺埃及斑蚊,不會影響其他蚊子品種,其他物種可照樣進食其他蚊子品種代替,不見得有任何大影響。658Please respect copyright.PENANAyUe3qrKEy5
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至於亦有人認為埃及斑蚊有機會因而大遷徙到第二區域,這點反而有著潛在的可能性,值得探討一下。
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睇番一大輪資料後,發覺原來依篇文所寫的方法係佢哋用係巴西的方法,18個月之內係有成效,之後蚊子數量回升。658Please respect copyright.PENANAXt76DhoXkQ
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今次美國所用的方法係OX5034,同舊原理差唔多,但女性BB會死,而男性BB唔會。658Please respect copyright.PENANAhJfSsm8Fmv
658Please respect copyright.PENANA0iQLkfqCL1
無睇到佢哋媒體資料,只係睇咗佢哋之前所發出的學術文章,所以資料有錯,對不起。
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https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio658Please respect copyright.PENANAInHixViTP0
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Ref:658Please respect copyright.PENANAg95Z4aqcFF
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6072261/#R3658Please respect copyright.PENANAYQY4XhcWOU
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4489809/658Please respect copyright.PENANAMPa0hfvZAJ
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1865532/658Please respect copyright.PENANAjU6eyby4pg
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4063546/
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