（前排生病，測試咗唔係武肺。現在正常更番。)462Please respect copyright.ＰＥＮＡＮＡKO33a802lP
462Please respect copyright.ＰＥＮＡＮＡ3eZwWclpT6
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。
462Please respect copyright.ＰＥＮＡＮＡ6bYnppn9r1
462Please respect copyright.ＰＥＮＡＮＡvxX0uerefe
462Please respect copyright.ＰＥＮＡＮＡsJX1lQKk5A
(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。462Please respect copyright.ＰＥＮＡＮＡv4WlsmE3zp
462Please respect copyright.ＰＥＮＡＮＡxPnZqgYa11
462Please respect copyright.ＰＥＮＡＮＡpVf8bjP8oS
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」。462Please respect copyright.ＰＥＮＡＮＡZVDmnOy3Fs
462Please respect copyright.ＰＥＮＡＮＡ3NIWlG6N2h
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。462Please respect copyright.ＰＥＮＡＮＡC1xJd4UTCw
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。462Please respect copyright.ＰＥＮＡＮＡXYZgPzX2TP
而當溫度達40度的時候，雀鳥們會開始熱叫。462Please respect copyright.ＰＥＮＡＮＡeT8EMb0Iei
462Please respect copyright.ＰＥＮＡＮＡa5qWzrfBQB
462Please respect copyright.ＰＥＮＡＮＡghMorQVRDx
(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。462Please respect copyright.ＰＥＮＡＮＡydyqBRKsvU
462Please respect copyright.ＰＥＮＡＮＡXBErwJZ870
462Please respect copyright.ＰＥＮＡＮＡ5rYEkKdOYv
而會熱叫的雀仔，有部份能44度支撐20分鐘有多。462Please respect copyright.ＰＥＮＡＮＡswM0NmFcuO
462Please respect copyright.ＰＥＮＡＮＡRIIG51iwnC
462Please respect copyright.ＰＥＮＡＮＡ6mM1WMqSTg
462Please respect copyright.ＰＥＮＡＮＡYuGw65qzFI
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。462Please respect copyright.ＰＥＮＡＮＡeJrs5QD47w
462Please respect copyright.ＰＥＮＡＮＡyI5uoHBSwB
https://www.youtube.com/watch?v=NggVoJ7mOos462Please respect copyright.ＰＥＮＡＮＡa9X9lzNIIz
462Please respect copyright.ＰＥＮＡＮＡk4kEQeJr6s
但並不是所有雀鳥也能這樣做，至少班胸雀鳥沒有這功能。462Please respect copyright.ＰＥＮＡＮＡ5n0tZaakFq
462Please respect copyright.ＰＥＮＡＮＡItJyGWQu7Z
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。462Please respect copyright.ＰＥＮＡＮＡBvCjtkMcQ1
462Please respect copyright.ＰＥＮＡＮＡyrcgUYqDM5
至少，懂得熱叫的雀鳥也較抵禦高溫。462Please respect copyright.ＰＥＮＡＮＡlcaeXDQRxh
462Please respect copyright.ＰＥＮＡＮＡ5S3qhMG573
462Please respect copyright.ＰＥＮＡＮＡX694pfHh6o
462Please respect copyright.ＰＥＮＡＮＡAGugunsBnK
462Please respect copyright.ＰＥＮＡＮＡyCEfBq83AM
462Please respect copyright.ＰＥＮＡＮＡjWsxiD84r7
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。462Please respect copyright.ＰＥＮＡＮＡSe6W7QPcV6
462Please respect copyright.ＰＥＮＡＮＡbeeDJJrN4X
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/toc462Please respect copyright.ＰＥＮＡＮＡVO7thR0plu
462Please respect copyright.ＰＥＮＡＮＡnHpEFfsuV1
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。462Please respect copyright.ＰＥＮＡＮＡWe4O1aW6I1
462Please respect copyright.ＰＥＮＡＮＡ0uCbdPfohq
Link:462Please respect copyright.ＰＥＮＡＮＡJDyVkKB42l
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio462Please respect copyright.ＰＥＮＡＮＡpzIUFu7tSG
462Please respect copyright.ＰＥＮＡＮＡ1dbC4wqBtI
462Please respect copyright.ＰＥＮＡＮＡoqO6HCRFng
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。462Please respect copyright.ＰＥＮＡＮＡUtraqX2xca
462Please respect copyright.ＰＥＮＡＮＡw8XrARBs5E
Ref1:https://www.nature.com/articles/s41598-020-75909-6462Please respect copyright.ＰＥＮＡＮＡB3tXnAtiPR
Penana
search
登入arrow_drop_down
註冊arrow_drop_down
