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。398Please respect copyright.PENANAfqhsJzPXG4398Please respect copyright.PENANAk4kHQuGLgz
398Please respect copyright.PENANAtLawWv1Hfn
(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。398Please respect copyright.PENANAPckw41FDdq398Please respect copyright.PENANAtqBx5FKFxd
398Please respect copyright.PENANAOT1u4vfBh9
為何會塗糞上身,而且為何又如此揀擇呢?398Please respect copyright.PENANAPY4ufZenn9
398Please respect copyright.PENANA4Ms9T0YSGt
(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。398Please respect copyright.PENANAyLTmkBV91j398Please respect copyright.PENANAY5CL9GGLq4
398Please respect copyright.PENANA75j898VdB7
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。398Please respect copyright.PENANAviPt8ABHmg
398Please respect copyright.PENANAgwhr3PDy1L
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。398Please respect copyright.PENANAxdRKx4MRmE
398Please respect copyright.PENANADDT4fmMHi5
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。398Please respect copyright.PENANARuiCjvRKPw
亦有可能的是,馬糞還有另外的功用尚未被揭曉出來。398Please respect copyright.PENANAup2k6xXQjr
398Please respect copyright.PENANA5msmwDJZJH
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。398Please respect copyright.PENANAq6RTJS2nM2
398Please respect copyright.PENANAfLBDthbBzS
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/toc398Please respect copyright.PENANAyNiZZnOYxH
398Please respect copyright.PENANAd6Rkm24vGk
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。398Please respect copyright.PENANAsQfz0xSITu
398Please respect copyright.PENANAIfns3kaajw
Link:398Please respect copyright.PENANAsDwj3gzhsR
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio398Please respect copyright.PENANA6pZoDWZVVS
398Please respect copyright.PENANAh6ABah90CY
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。398Please respect copyright.PENANAxmU3W1e4zM
398Please respect copyright.PENANA4SOIvVQwhB
https://www.instagram.com/potatopigtongue/398Please respect copyright.PENANAaSmRPPGQ31
398Please respect copyright.PENANAtso5NTG44P
Ref1:https://www.pnas.org/content/early/2020/12/01/2004640117398Please respect copyright.PENANAcZk2fIqSMi
398Please respect copyright.PENANA2EpJm7awV1
398Please respect copyright.PENANA5uTsxIRvTG
真實影片:https://www.sciencemag.org/sites/default/files/120720-pandas.mp4398Please respect copyright.PENANAPkFTKGy6If
398Please respect copyright.PENANAg0p1MJaLvp