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。423Please respect copyright.PENANA0GbKhEHULU423Please respect copyright.PENANAKkLmbVLvsX
423Please respect copyright.PENANA0pLuW1dSYN
(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。423Please respect copyright.PENANAnTKgbJEXwZ423Please respect copyright.PENANAw3ZHibmgtW
423Please respect copyright.PENANAbIC7VcjXw4
為何會塗糞上身,而且為何又如此揀擇呢?423Please respect copyright.PENANAAGAmxtdGAo
423Please respect copyright.PENANAxUCiL14Ee5
(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。423Please respect copyright.PENANAJKHYNgHdsy423Please respect copyright.PENANAvqJzIBMzZu
423Please respect copyright.PENANArLeIhSIYF1
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。423Please respect copyright.PENANAeP4PNSU6yL
423Please respect copyright.PENANATuAvjhLU1Q
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。423Please respect copyright.PENANAbGzyDOLHJw
423Please respect copyright.PENANAvRrma54laK
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。423Please respect copyright.PENANAG7tw5wnYAs
亦有可能的是,馬糞還有另外的功用尚未被揭曉出來。423Please respect copyright.PENANAlgkWGeSN14
423Please respect copyright.PENANAWXZvy40AO4
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。423Please respect copyright.PENANAZpFXLfRhF7
423Please respect copyright.PENANA8z00hGeuAF
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/toc423Please respect copyright.PENANAWcnIKi2mF7
423Please respect copyright.PENANAjMa2pVnofW
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。423Please respect copyright.PENANAFRdcKQMOAE
423Please respect copyright.PENANA020bGa7pHb
Link:423Please respect copyright.PENANA4mjQb4Brmg
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio423Please respect copyright.PENANArGax6MJneW
423Please respect copyright.PENANABk5RKOM9Ht
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。423Please respect copyright.PENANAvfeDKpKXe9
423Please respect copyright.PENANAaFBcGwuur4
https://www.instagram.com/potatopigtongue/423Please respect copyright.PENANARaYps3csGp
423Please respect copyright.PENANAUjHD7soeI4
Ref1:https://www.pnas.org/content/early/2020/12/01/2004640117423Please respect copyright.PENANAg8Lc5DdkyQ
423Please respect copyright.PENANAuB9Yfz8O5Q
423Please respect copyright.PENANAnXDurYzY6Y
真實影片:https://www.sciencemag.org/sites/default/files/120720-pandas.mp4423Please respect copyright.PENANAj21B4vdtBx
423Please respect copyright.PENANAJQE9KtHM1j