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Monday, June 30, 2008 |
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ทำไมกบ จิ้งหรีดร้องเสียงดังหลังฝนตก?
By Joeadmin @ 3:16 PM :: 5203 Views ::  :: วิทยาศาสตร์รอบตัว(จาก สสวท.)
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ท่านที่อยู่ในพื้นที่ธรรมชาติ จะสังเกตได้ว่า ฝนตกเมื่อไหร่ก็ตามจะได้ยินเสียงกบ จิ้งหวีด และสัตว์เล็กสัตว์น้อยอื่นๆ พากันร้องประสานเสียงกันระเบ็งเซ็งแซ่ไปทีเดียว เรื่องนี้คงมีคนสงสัยกันบ้างละว่าการร้องของกบและจิ้งหวีดไปเกี่ยวอะไรกับฝน
ความเชื่อที่ว่าจิ้งหรีดหรือกบร้องเฉพาะเวลาฝนตกหรือหลังฝนตกไม่ใช่ความจริงทางวิทยาศาสตร์ แต่มีเหตุบางอย่างที่ทำให้ดูเหมือนว่าพ้องกัน ข้อเท็จจริงก็คือเมื่อเกิดฝนตกน้ำฝนจะไหลท่วมรูที่กบและจิ้งหรีดอาศัยอยู่ ทำให้พวกมันต้องออกมาข้างนอก และทำกิจกรรมที่ตามปกติจะทำในรูหรือในที่กำบัง เช่น หาอาหาร ผสมพันธุ์ เป็นต้น จนดูเหมือนว่าฝนเป็นปัจจัยที่ทำให้กบหรือจิ้งหรีดส่งเสียงร้อง ความจริงเป็นการส่งเสียงตามปกติอยู่แล้ว แต่เราสามารถได้ยินด้วยก็เท่านั้นเอง นอกจากนั้นความเงียบของโลกหลังฝนตกเป็นเหตุผลเสริมอีกอย่างหนึ่งที่ทำให้เราได้ยินเสียงของสรรพชีวิตได้ดีเป็นพิเศษ
สรุปแล้วเป็นเรื่องของจิตใจและสัญชาตญาณของสัตว์โลกครับ สัตว์ทุกชนิดมีสัญชาตญาณและความรู้สึกนึกคิดคล้ายกับเราที่เป็นมนุษย์เหมือนกัน สิ่งมีชีวิตทั้งหลายจึงควรเห็นอกเห็นใจซึ่งกันและกันโดยมีความจริงทางวิทยาศาสตร์เป็นตัวเสริม |
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