The conditions under which early euprimates (adapids and omomyids) originated and evolved is an area of longstanding debate. The leading hypotheses of euprimate origins promulgate diet as a core component of the early evolution of this group, despite the role of dietary competition in euprimate originations never being tested directly. This study compared three competition models (non-competition, competitive displacement, competitive coexistence) with observed patterns of dietary niche overlap, reconstructed from three-dimensional molar morphology, at the time of the euprimate radiation in North America (at the Paleocene-Eocene boundary). Overlap of reconstructed multidimensional dietary niches between euprimates and members of their guild were analysed using a modified MANOVA to establish the nature of the competitive environment surrounding euprimate origins in North America (an immigration event). Results indicated that adapids entered the mammalian guild in the absence of competition, suggesting dietary adaptations that were unique within the community. Conversely, omomyids experienced strong, but transitory, competition with nyctitheriids, suggesting that omomyids possessed the ability to out-compete this group. These results show that adapids and omomyids experienced different competitive scenarios upon their arrival (origination) in North America and confirm the significance of diet (and dietary adaptations) in euprimate origination and early diversification in mammalian communities.
|Original language||English (US)|
|Journal||Proceedings of the Royal Society B: Biological Sciences|
|State||Published - Aug 15 2018|
- Dietary niche
- Paleogene mammals
- Primate evolution
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Immunology and Microbiology(all)
- Environmental Science(all)
- Agricultural and Biological Sciences(all)
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Per the website instructions (http://rspb.royalsocietypublishing.org/final-file-submission-guidelines), all but 1 ESM file was combined into a single file with captions provided for each separate figure, table, or document. from The role of dietary competition in the origination and early diversification of North American euprimates.
Schwartz, G. (Contributor) & Stroik, L. K. (Contributor), figshare Academic Research System, Jan 1 2018
Supplementary material from "The role of dietary competition in the origination and early diversification of North American euprimates"
Stroik, L. K. (Creator) & Schwartz, G. (Creator), Figshare, 2018
Table S1. Scaled morphometric measures for each specimen included in the full dataset. from The role of dietary competition in the origination and early diversification of North American euprimates.
Stroik, L. K. (Creator) & Schwartz, G. (Creator), figshare Academic Research System, 2018