上集我們講述了小臭鼩應對寒冬的一道機制,今集我們將會講述熊貓應付寒冬的一道怪招。345Please respect copyright.PENANAtOF6m259L8
345Please respect copyright.PENANAUqE9nUuR7B
345Please respect copyright.PENANANIMdQsJdKu
(圖2)有研究發現(Ref1),當攝氏低過15度的時候,熊貓會將馬糞塗滿全身,而且選糞中亦有一定的揀擇,牠們並不會採用暴露於大自然間超過10日的馬糞。345Please respect copyright.PENANA5GK0Z6D7Vz
345Please respect copyright.PENANApsAsI06gHe
345Please respect copyright.PENANAv5s3d5fS5h
為何會塗糞上身,而且為何又如此揀擇呢?345Please respect copyright.PENANAv6WEXJhbgL
345Please respect copyright.PENANAz89bBDbWdr
(圖3)最後科學家發現,新鮮馬糞含有一定份量的化合物,BCP/BCPO (beta-caryophyllene/caryophyllene oxide) ,而這些化合物具有抑壓負責感測寒冷的TRPM8蛋白質功效。345Please respect copyright.PENANAziE1JB0qGo
345Please respect copyright.PENANAK61Wy2hcuw
345Please respect copyright.PENANARBPizgFLGZ
利用老鼠作實驗體,在牠們身體塗上BCP/BCPO液體以模仿熊貓塗馬糞的舉動,對比塗上鹽水的對照群組,塗上化合物液體的老鼠較傾向行走寒冷的地方,而且亦較少互相擁抱取暖。345Please respect copyright.PENANASkWfdBMmzW
345Please respect copyright.PENANAFcZ9kLoGSA
因此科學家推斷,熊腦大有可能透過馬糞中的化合物抑制身體的TRPM8蛋白質,以自欺欺人的方式盡量減低身體感知寒冷的能力,使自己感覺良好渡過寒冬。345Please respect copyright.PENANA77MJTTvuD5
345Please respect copyright.PENANAxK93H6mmPT
但為何熊貓會懂得馬糞中含有對應的化合物,那就還是一個無法拆解的謎。345Please respect copyright.PENANALzG9DBEEWi
亦有可能的是,馬糞還有另外的功用尚未被揭曉出來。345Please respect copyright.PENANACvZsO8w6HD
345Please respect copyright.PENANA9ZZVnGgS7H
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。345Please respect copyright.PENANAKZrsn2ofpk
345Please respect copyright.PENANAu0y2a4U6SR
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/toc345Please respect copyright.PENANAlusBuBrfrJ
345Please respect copyright.PENANAd8rAL0i2qC
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。345Please respect copyright.PENANAvWdQSMI5n9
345Please respect copyright.PENANAlRrdlFCsI5
Link:345Please respect copyright.PENANAXlkNCaklXu
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio345Please respect copyright.PENANATl1wkvzZhJ
345Please respect copyright.PENANAEn1TIW6nTR
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。345Please respect copyright.PENANA8H3Zyj7Ajo
345Please respect copyright.PENANAYZlXK6MiVu
https://www.instagram.com/potatopigtongue/345Please respect copyright.PENANAz2jBBZakjo
345Please respect copyright.PENANAYomqSyl0VO
Ref1:https://www.pnas.org/content/early/2020/12/01/2004640117345Please respect copyright.PENANAILFFPFCosj
345Please respect copyright.PENANA4K7l4mPHLY
345Please respect copyright.PENANAnelGgZxt1v
真實影片:https://www.sciencemag.org/sites/default/files/120720-pandas.mp4345Please respect copyright.PENANAcF158cQznu
345Please respect copyright.PENANAmZDyy63hGB