Temporomandibular joint and Giant Panda’s (Ailuropoda melanoleuca) adaptation to bamboo diet

Abstract Here, we present new evidence that evolutionary adaptation of the Ailuripodinae lineage to bamboo diet has taken place by morphological adaptations in the masticatory system. The giant panda in the wild and in captivity removes without an exception the outer skin of all bamboo shoots, rich...

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Autores principales:	Pekka K. Vallittu, Juha Varrela, Jukka Salo, Li Rengui, Ling Shanshan, Huang Shan, Hemin Zhang, Pekka Niemelä
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/45f7c84faddd449f95a03ebbad48d98c
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spelling	oai:doaj.org-article:45f7c84faddd449f95a03ebbad48d98c2021-12-02T16:24:50ZTemporomandibular joint and Giant Panda’s (Ailuropoda melanoleuca) adaptation to bamboo diet10.1038/s41598-021-93808-22045-2322https://doaj.org/article/45f7c84faddd449f95a03ebbad48d98c2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93808-2https://doaj.org/toc/2045-2322Abstract Here, we present new evidence that evolutionary adaptation of the Ailuripodinae lineage to bamboo diet has taken place by morphological adaptations in the masticatory system. The giant panda in the wild and in captivity removes without an exception the outer skin of all bamboo shoots, rich in abrasive and toxic compounds, by the highly adapted premolars P3 and P4. The temporomandibular joint (TMJ) allows sidewise movement of the jaw and the premolars can, in a cusp-to-cusp position, remove the poorly digestible outer skin of the bamboo before crushing the bamboo with molars. Based on the evidence presented here, we suggest that adaptation of TMJ to lateral movement for enabling cusp-to-cusp contact of premolars is the crucial evolutionary factor as which we consider the key to understand the Ailuropodinae lineage adaptive pathway to utilize the bamboo resource.Pekka K. VallittuJuha VarrelaJukka SaloLi RenguiLing ShanshanHuang ShanHemin ZhangPekka NiemeläNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Pekka K. Vallittu Juha Varrela Jukka Salo Li Rengui Ling Shanshan Huang Shan Hemin Zhang Pekka Niemelä Temporomandibular joint and Giant Panda’s (Ailuropoda melanoleuca) adaptation to bamboo diet
description	Abstract Here, we present new evidence that evolutionary adaptation of the Ailuripodinae lineage to bamboo diet has taken place by morphological adaptations in the masticatory system. The giant panda in the wild and in captivity removes without an exception the outer skin of all bamboo shoots, rich in abrasive and toxic compounds, by the highly adapted premolars P3 and P4. The temporomandibular joint (TMJ) allows sidewise movement of the jaw and the premolars can, in a cusp-to-cusp position, remove the poorly digestible outer skin of the bamboo before crushing the bamboo with molars. Based on the evidence presented here, we suggest that adaptation of TMJ to lateral movement for enabling cusp-to-cusp contact of premolars is the crucial evolutionary factor as which we consider the key to understand the Ailuropodinae lineage adaptive pathway to utilize the bamboo resource.
format	article
author	Pekka K. Vallittu Juha Varrela Jukka Salo Li Rengui Ling Shanshan Huang Shan Hemin Zhang Pekka Niemelä
author_facet	Pekka K. Vallittu Juha Varrela Jukka Salo Li Rengui Ling Shanshan Huang Shan Hemin Zhang Pekka Niemelä
author_sort	Pekka K. Vallittu
title	Temporomandibular joint and Giant Panda’s (Ailuropoda melanoleuca) adaptation to bamboo diet
title_short	Temporomandibular joint and Giant Panda’s (Ailuropoda melanoleuca) adaptation to bamboo diet
title_full	Temporomandibular joint and Giant Panda’s (Ailuropoda melanoleuca) adaptation to bamboo diet
title_fullStr	Temporomandibular joint and Giant Panda’s (Ailuropoda melanoleuca) adaptation to bamboo diet
title_full_unstemmed	Temporomandibular joint and Giant Panda’s (Ailuropoda melanoleuca) adaptation to bamboo diet
title_sort	temporomandibular joint and giant panda’s (ailuropoda melanoleuca) adaptation to bamboo diet
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/45f7c84faddd449f95a03ebbad48d98c
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Temporomandibular joint and Giant Panda’s (Ailuropoda melanoleuca) adaptation to bamboo diet

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