（前排生病，測試咗唔係武肺。現在正常更番。)448Please respect copyright.ＰＥＮＡＮＡECU7TSBmVz
448Please respect copyright.ＰＥＮＡＮＡf9km0SaI03
沙漠經常被描繪成為鳥不生蛋的地方。雖有不少動物均會採取夜行性方針躲避有機會超過50度高溫的日間環境。但現實上仍有選擇在日間行動的沙漠雀鳥。
448Please respect copyright.ＰＥＮＡＮＡShqadc8bJt
448Please respect copyright.ＰＥＮＡＮＡqtGvjFnlmt
448Please respect copyright.ＰＥＮＡＮＡZvA3DkSBNT
(圖2)有資料顯示，居住在沙漠的雀鳥，每天有數小時可以維持自己體溫低於外間溫度10-20度左右。448Please respect copyright.ＰＥＮＡＮＡkLxoMylNL5
448Please respect copyright.ＰＥＮＡＮＡlEm0SsgfYA
448Please respect copyright.ＰＥＮＡＮＡ38D6O1dQPH
而斑胸草雀是其中一種能適應沙漠氣溫的雀鳥，有研究發現，牠們在高溫下會發出獨特快速節奏的高音叫聲，下稱「熱叫」。448Please respect copyright.ＰＥＮＡＮＡp0AkKsc9dK
448Please respect copyright.ＰＥＮＡＮＡaAim1tVvFe
研究人員找來44隻斑胸草雀，其中有32隻(73%)會遇熱時會發出熱叫。448Please respect copyright.ＰＥＮＡＮＡ4TGOmoKXHG
如圖中所示，隨著溫度逐漸提升，喘氣所佔用的時間開始增加。448Please respect copyright.ＰＥＮＡＮＡwWjhuuFK3w
而當溫度達40度的時候，雀鳥們會開始熱叫。448Please respect copyright.ＰＥＮＡＮＡasYTUh7J2Q
448Please respect copyright.ＰＥＮＡＮＡ38E35y7H6F
448Please respect copyright.ＰＥＮＡＮＡyXMna0G30E
(圖3)不懂熱叫的雀仔，在42度的時候開始出現失去平衝等不適狀態，實驗立即停止。448Please respect copyright.ＰＥＮＡＮＡrpUueSFfU6
448Please respect copyright.ＰＥＮＡＮＡ48XomRaHJD
448Please respect copyright.ＰＥＮＡＮＡsP3e99HzfT
而會熱叫的雀仔，有部份能44度支撐20分鐘有多。448Please respect copyright.ＰＥＮＡＮＡbhMedgNNrN
448Please respect copyright.ＰＥＮＡＮＡQrMnzdh5ci
448Please respect copyright.ＰＥＮＡＮＡDYPQYZCgfm
448Please respect copyright.ＰＥＮＡＮＡyaiMx9y8ur
有部分雀鳥會透過gular flutter來抵禦高溫，如下面影片一樣，雀鳥會透過振盪來讓熱空氣與內裡濕潤的內壁環境接觸，熱空氣會蒸發內壁環境的水滴（水滴的能量會轉移到空氣中，因此水滴的溫度會降低），因而盡量減低身體溫度。448Please respect copyright.ＰＥＮＡＮＡi3xzkZhQUd
448Please respect copyright.ＰＥＮＡＮＡgLAowc6HyC
https://www.youtube.com/watch?v=NggVoJ7mOos448Please respect copyright.ＰＥＮＡＮＡPrgDzQyRJf
448Please respect copyright.ＰＥＮＡＮＡWvt8vujfqH
但並不是所有雀鳥也能這樣做，至少班胸雀鳥沒有這功能。448Please respect copyright.ＰＥＮＡＮＡXXYeBGSIJI
448Please respect copyright.ＰＥＮＡＮＡpY4b5kXjc9
或計熱叫就是牠們發展出的一種散熱方式，可能原理非常接近，但還需進一步的確認。448Please respect copyright.ＰＥＮＡＮＡUbcohOL85b
448Please respect copyright.ＰＥＮＡＮＡU1Ue5K8UYx
至少，懂得熱叫的雀鳥也較抵禦高溫。448Please respect copyright.ＰＥＮＡＮＡjvh47yRMGm
448Please respect copyright.ＰＥＮＡＮＡsIwzIS19EI
448Please respect copyright.ＰＥＮＡＮＡgxor3DImLq
448Please respect copyright.ＰＥＮＡＮＡ2DGFQKeDIn
448Please respect copyright.ＰＥＮＡＮＡA7GS4jrW1S
448Please respect copyright.ＰＥＮＡＮＡElS4n5SvVa
如果想我快啲出文的話，請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark，這對我非常之重要。448Please respect copyright.ＰＥＮＡＮＡnNYtIwszH0
448Please respect copyright.ＰＥＮＡＮＡz58w2Gjyon
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc448Please respect copyright.ＰＥＮＡＮＡ4vgZB7pXAK
448Please respect copyright.ＰＥＮＡＮＡ9YojgFSJqx
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」，以課金的方式推動我繼續搜羅資料寫文，多謝。448Please respect copyright.ＰＥＮＡＮＡRAc7TTYk3X
448Please respect copyright.ＰＥＮＡＮＡIOIW1LQSa1
Link:448Please respect copyright.ＰＥＮＡＮＡtzKFaRIPCH
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio448Please respect copyright.ＰＥＮＡＮＡMEn4pa11Hx
448Please respect copyright.ＰＥＮＡＮＡgtqhtqBXGa
448Please respect copyright.ＰＥＮＡＮＡU4UI4H9N4I
除非Facebook及IG重開侵侵的account，否則我的IG將不會再作更新，只會寄居本土LIHKG及Penana。448Please respect copyright.ＰＥＮＡＮＡ2m3ZgxnpCF
448Please respect copyright.ＰＥＮＡＮＡrFthW8NuBF
Ref1:https://www.nature.com/articles/s41598-020-75909-6448Please respect copyright.ＰＥＮＡＮＡnHKEe2d7bs
Penana
search
登入arrow_drop_down
註冊arrow_drop_down
