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Respiratory protein-driven selectivity during the Permian-Triassic mass extinction
- Source :
- The Innovation, Vol 5, Iss 3, Pp 100618- (2024)
- Publication Year :
- 2024
- Publisher :
- Elsevier, 2024.
-
Abstract
- Extinction selectivity determines the direction of macroevolution, especially during mass extinction; however, its driving mechanisms remain poorly understood. By investigating the physiological selectivity of marine animals during the Permian-Triassic mass extinction, we found that marine clades with lower O2-carrying capacity hemerythrin proteins and those relying on O2 diffusion experienced significantly greater extinction intensity and body-size reduction than those with higher O2-carrying capacity hemoglobin or hemocyanin proteins. Our findings suggest that animals with high O2-carrying capacity obtained the necessary O2 even under hypoxia and compensated for the increased energy requirements caused by ocean acidification, which enabled their survival during the Permian-Triassic mass extinction. Thus, high O2-carrying capacity may have been crucial for the transition from the Paleozoic to the Modern Evolutionary Fauna.
- Subjects :
- Science (General)
Q1-390
Subjects
Details
- Language :
- English
- ISSN :
- 26666758
- Volume :
- 5
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- The Innovation
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.787f0183d0844085b21f04c090d61d76
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.xinn.2024.100618