Unexpected bite‐force conservatism as a stable performance foundation across mesoeucrocodylian historical diversity
Unexpected bite‐force conservatism as a stable performance foundation across mesoeucrocodylian historical diversity
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意外的咬伤——迫使保守主义成为跨越中真鳄鱼历史多样性的稳定表现基础
DOI:
10.1002/ar.24768
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
O'Brien, Haley D.
中科院分区:
文献类型:
--
作者:
Gignac, Paul M.;Smaers, Jeroen B.;O'Brien, Haley D.
Effective interpretation of historical selective regimes requires comprehensivein vivoperformance evaluations and well‐constrained ecomorphological proxies. The feeding apparatus is a frequent target of such evolutionary studies due to a direct relationship between feeding and survivorship, and the durability of craniodental elements in the fossil record. Among vertebrates, behaviors such as bite force have been central to evaluation of clade dynamics; yet, in the absence of detailed performance studies, such evaluations can misidentify potential selective factors and their roles. Here, we combine the results of a total‐clade performance study with fossil‐inclusive, phylogenetically informed methods to assess bite‐force proxies throughout mesoeucrocodylian evolution. Although bite‐force shifts were previously thought to respond to changing rostrodental selective regimes, we find body‐size dependent conservation of performance proxies throughout the history of the clade, indicating stabilizing selection for bite‐force potential. Such stasis reveals that mesoeucrocodylians with dietary ecologies as disparate as herbivory and hypercarnivory maintain similar bite‐force‐to‐body‐size relationships, a pattern which contrasts the precept that vertebrate bite forces should vary most strongly by diet. Furthermore, it may signal that bite‐force conservation supported mesoeucrocodylian craniodental disparity by providing a stable performance foundation for the exploration of novel ecomorphospace.
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影响因子:
4.6
作者:
Gignac PM;Erickson GM
通讯作者:
Erickson GM
DOI:
10.1093/iob/obz006
发表时间:
2019
期刊:
Integrative organismal biology (Oxford, England)
影响因子:
--
作者:
O'Brien HD;Lynch LM;Vliet KA;Brueggen J;Erickson GM;Gignac PM
通讯作者:
Gignac PM
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
D. Poole
通讯作者:
D. Poole
影响因子:
2.6
作者:
Gignac P;O'Brien H
通讯作者:
O'Brien H
影响因子:
2.7
作者:
S. Emerson
通讯作者:
S. Emerson