科普專欄–薯不揀單 - 深入淺出–熊貓渡過寒冬的一道妙計

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。517Please respect copyright.ＰＥＮＡＮＡV5gG1OgGas
517Please respect copyright.ＰＥＮＡＮＡvTIMAeam2f
517Please respect copyright.ＰＥＮＡＮＡJ5uur5eBko
（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。517Please respect copyright.ＰＥＮＡＮＡM8TYjSns1I
517Please respect copyright.ＰＥＮＡＮＡHBTQ96SbPB
517Please respect copyright.ＰＥＮＡＮＡk87Fd3uaMo
為何會塗糞上身，而且為何又如此揀擇呢？517Please respect copyright.ＰＥＮＡＮＡcFbMh6I40R
517Please respect copyright.ＰＥＮＡＮＡWPnpHBKSI1
（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。517Please respect copyright.ＰＥＮＡＮＡgVjEw1pImi
517Please respect copyright.ＰＥＮＡＮＡ7ZyC4r6mV0
517Please respect copyright.ＰＥＮＡＮＡWzDLt3HDNu
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。517Please respect copyright.ＰＥＮＡＮＡvA1qCCdRhO
517Please respect copyright.ＰＥＮＡＮＡeaI3gK2ua3
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。517Please respect copyright.ＰＥＮＡＮＡLyWyEpfIAT
517Please respect copyright.ＰＥＮＡＮＡNVKy4iy9Lv
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。517Please respect copyright.ＰＥＮＡＮＡjt1vc2L3ti
亦有可能的是，馬糞還有另外的功用尚未被揭曉出來。517Please respect copyright.ＰＥＮＡＮＡ8TQXuQ6dXd
517Please respect copyright.ＰＥＮＡＮＡZ0KcawjbiI
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。517Please respect copyright.ＰＥＮＡＮＡqZOs3SMjeR
517Please respect copyright.ＰＥＮＡＮＡI0QNVCNjGj
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/toc517Please respect copyright.ＰＥＮＡＮＡVrm6vBq6Af
517Please respect copyright.ＰＥＮＡＮＡUm5CS0GZGY
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。517Please respect copyright.ＰＥＮＡＮＡ7xDAkGQsu4
517Please respect copyright.ＰＥＮＡＮＡZloaod58IK
Link:517Please respect copyright.ＰＥＮＡＮＡOeMoYIG2rC
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio517Please respect copyright.ＰＥＮＡＮＡ334pA8ncXW
517Please respect copyright.ＰＥＮＡＮＡTKkoPjOzL6
有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。517Please respect copyright.ＰＥＮＡＮＡIug0YaNpB8
517Please respect copyright.ＰＥＮＡＮＡsRagDfeEil
https://www.instagram.com/potatopigtongue/517Please respect copyright.ＰＥＮＡＮＡIEFljNhf5N
517Please respect copyright.ＰＥＮＡＮＡQkMSe0Hb34
Ref1:https://www.pnas.org/content/early/2020/12/01/2004640117517Please respect copyright.ＰＥＮＡＮＡ9EK7guhDeT

517Please respect copyright.ＰＥＮＡＮＡ0kpyIjaanl

517Please respect copyright.ＰＥＮＡＮＡIm6MeRbDF9

真實影片:https://www.sciencemag.org/sites/default/files/120720-pandas.mp4517Please respect copyright.ＰＥＮＡＮＡ5QzKi85aO1
517Please respect copyright.ＰＥＮＡＮＡwxVL8MxmtN

ns216.73.216.138da2

介面主題:

字體大小:

行距:

段距:

自動加載下一章