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据英国《卫报》网站报道,昆虫的灭绝速度是哺乳动物、鸟类和爬行动物灭绝速度的8倍,昆虫的数目正在以每年2.5%的速度减少。如果不采取保护措施,也许昆虫会在100年内彻底灭绝,从而导致整个生态系统的崩溃!植物会因为失去授粉昆虫而灭绝,以昆虫为食的鸟类、蝙蝠、蛙类等动物将大量饿死,而以这些动物为食的大型食肉动物也势必随之减少。
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与此同时,虽然目前环境让多种昆虫数量锐减,但这种气候温暖、二氧化碳含量较高的环境却有利于蚊子、蠓(Ceratopogouidae)、蚋(Simuliidae)等吸血昆虫形成更多的新品种。因为吸血昆虫喜欢温暖、高二氧化碳的环境,在环境适宜、食物充足的情况下,基因变异的吸血昆虫容易存活下去并形成新物种。这些新物种吸血昆虫可能会传播更多疾病,威胁人畜安全。
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昆虫已在地球生存数亿年,但要让它们灭绝只需百年。人类在自身发展的同时,也应顾及其他生物的生存,否则到头来承担后果的还是人类自己。
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参考文献
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[1] 志留纪是早古生代的最后一个纪,也是古生代第三个纪,约开始于4.4亿年前,结束于4.1亿年前。——编者注
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