蟬聲擾人|蟬叫聲太大以為響警報 美警收太多報案發文澄清: 有人甚至攔住警員追問

文: 程家健
2024.04.28

蟬聲唧唧,代表炎夏即將到來,不過最近美國有一一個縣,因為蟬叫聲太大,以致居民以為響警報、有意外發生,不斷打電話報案,以致警方要在網上發文澄清,並呼籲大家忍耐。

據《美聯社》報道,美國南卡羅來納州一個縣,因蟬叫聲音太大,使大量居民以為響起警報,或聽到巨大的轟鳴聲,於是打電話至警長辦公室了解。

紐伯里縣(Newberry)一名警長指,有些人甚至攔下警員詢問這些噪音何來,他解釋該蟬群正在該縣來遷移,並因應其移動位置,有不同地點的居民致電警方。

因此,該縣警長辦公室遂於本周二(23日)在Facebook上發布消息,指出該些聽起來像警報、咆哮的噪音,其實只是蟬叫聲,指蟬會在每年春天出現,尖銳的聲音僅是雄蟬為了吸引配偶而發出,並指這些蟬群每13年至17年便會出現一次。報道指,蟬群的集體叫聲可以像噴射機引擎一樣大,研究這些蟬的科學家也戴上耳罩以保護聽力。

蟬叫為交配 若蟲期可長達十年以上

本港同樣有市民受夏蟬叫聲困擾,去年6月有市民指有一隻蟬誤飛入屋,每隔約一小時便會鳴叫,而且十分響亮。漁護署的香港郊野公園facebook介紹本港其中4種蟬(草蟬、斑蟬、紅鼻蟬、慶斑蟬),並指只有腹節具發音器的雄蟬才會發出鳴叫聲,而叩得落力只為吸引雌蟬交配。

蟬是一種不完全變態的鳴蟲,成蟲一般在樹上棲息,而若蟲(即幼蟲)一般居於泥土裏。視乎種類,若蟲期為一年至數年,有些可長達逾十年。另外,一隻雌蟬可以產卵多達500至600粒,如果蟬一出世便潛入泥土吸食樹根汁液,該樹很快便會枯死,若蟲亦會斷糧而死。因此,部分若蟲會慢慢吸食樹根汁液,拉長生命周期,與寄主植物共存。

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↓免費意式雪條|杯裝意式雪糕買一送一↓

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