The Paradox of Predictability Provides a Bridge Between Micro- and Macroevolution DOI Creative Commons
Masahito Tsuboi, Jacqueline L. Sztepanacz, Stephen P. De Lisle

et al.

Journal of Evolutionary Biology, Journal Year: 2024, Volume and Issue: 37(12), P. 1413 - 1432

Published: Aug. 29, 2024

Abstract The relationship between the evolutionary dynamics observed in contemporary populations (microevolution) and evolution on timescales of millions years (macroevolution) has been a topic considerable debate. Historically, this debate centers inconsistencies microevolutionary processes macroevolutionary patterns. Here, we characterize striking exception: emerging evidence indicates that standing variation rates phenotypic divergence is often positively correlated. This apparent consistency micro- macroevolution paradoxical because it contradicts our previous understanding so far unexplained. explore prospects for bridging through an examination “paradox predictability.” We begin by explaining why divergence–variance correlation paradox, followed data analysis to show general phenomenon across broad range temporal scales, from few generations tens years. Then review complementary approaches quantitative genetics, comparative morphology, evo-devo, paleontology argue they can help address paradox shared vantage point recent work evolvability. In conclusion, recommend methodological orientation combines different kinds short-term long-term using multiple analytical frameworks interdisciplinary research program. Such program will increase how works within timescales.

Language: Английский

The evolution of mammalian brain size DOI Creative Commons
Jeroen B. Smaers, Ryan S. Rothman, Daphne R. Hudson

et al.

Science Advances, Journal Year: 2021, Volume and Issue: 7(18)

Published: April 28, 2021

An in-depth look at mammalian brain size evolution prompts a reevaluation of traditional paradigm.

Language: Английский

Citations

136
Complexity of avian evolution revealed by family-level genomes DOI Creative Commons
Josefin Stiller, Shaohong Feng,

Al-Aabid Chowdhury

et al.

Nature, Journal Year: 2024, Volume and Issue: 629(8013), P. 851 - 860

Published: April 1, 2024

Abstract Despite tremendous efforts in the past decades, relationships among main avian lineages remain heavily debated without a clear resolution. Discrepancies have been attributed to diversity of species sampled, phylogenetic method and choice genomic regions 1–3 . Here we address these issues by analysing genomes 363 bird 4 (218 taxonomic families, 92% total). Using intergenic coalescent methods, present well-supported tree but also marked degree discordance. The confirms that Neoaves experienced rapid radiation at or near Cretaceous–Palaeogene boundary. Sufficient loci rather than extensive taxon sampling were more effective resolving difficult nodes. Remaining recalcitrant nodes involve are challenge model due either extreme DNA composition, variable substitution rates, incomplete lineage sorting complex evolutionary events such as ancient hybridization. Assessment effects different partitions showed high heterogeneity across genome. We discovered sharp increases population size, rates relative brain size following extinction event, supporting hypothesis emerging ecological opportunities catalysed diversification modern birds. resulting estimate offers fresh insights into birds provides taxon-rich backbone for future comparative studies.

Language: Английский

Citations

87
The evolution of brain neuron numbers in amniotes DOI Creative Commons
Kristina Kverková, Lucie Marhounová, Alexandra Polonyiová

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2022, Volume and Issue: 119(11)

Published: March 7, 2022

SignificanceThe evolution of brain processing capacity has traditionally been inferred from data on size. However, similarly sized brains distantly related species can differ in the number and distribution neurons, their basic computational units. Therefore, a finer-grained approach is needed to reveal evolutionary paths increased cognitive capacity. Using new, comprehensive dataset, we analyzed cellular composition across amniotes. Compared reptiles, mammals birds have dramatically neuron numbers telencephalon cerebellum, which are parts associated with higher cognition. Astoundingly, phylogenetic analysis suggests that as few four major changes neuron-brain scaling over 300 million years pave way intelligence endothermic land vertebrates.

Language: Английский

Citations

68
Bird neurocranial and body mass evolution across the end-Cretaceous mass extinction: The avian brain shape left other dinosaurs behind DOI Creative Commons
Christopher R. Torres,

Mark A. Norell,

Julia A. Clarke

et al.

Science Advances, Journal Year: 2021, Volume and Issue: 7(31)

Published: July 30, 2021

Ecological or sensory system shifts associated with brain shape and size change may have contributed to unique avian survivorship.

Language: Английский

Citations

60
Neuron numbers link innovativeness with both absolute and relative brain size in birds DOI
Daniel Sol, Seweryn Olkowicz, Ferran Sayol

et al.

Nature Ecology & Evolution, Journal Year: 2022, Volume and Issue: 6(9), P. 1381 - 1389

Published: July 11, 2022

Language: Английский

Citations

52
Co-evolutionary dynamics of mammalian brain and body size DOI Creative Commons
Chris Venditti, Joanna Baker, Robert A. Barton

et al.

Nature Ecology & Evolution, Journal Year: 2024, Volume and Issue: 8(8), P. 1534 - 1542

Published: July 8, 2024

Despite decades of comparative studies, puzzling aspects the relationship between mammalian brain and body mass continue to defy satisfactory explanation. Here we show that several such arise from routinely fitting log-linear models data: correlated evolution is in fact log-curvilinear. This simultaneously accounts for phenomena which diverse biological explanations have been proposed, notably variability scaling coefficients across clades, low encephalization larger species so-called taxon-level problem. Our model implies a need revisit previous findings about relative mass. Accounting true relationship, document dramatically varying rates phylogeny, resolve question whether there an overall trend increase through time. We find only three orders, by far strongest primates, setting stage uniquely rapid directional ultimately producing computational powers human brain.

Language: Английский

Citations

12
A phylogenomic supermatrix of Galliformes (Landfowl) reveals biased branch lengths DOI
Rebecca T. Kimball, Peter A. Hosner, Edward L. Braun

et al.

Molecular Phylogenetics and Evolution, Journal Year: 2021, Volume and Issue: 158, P. 107091 - 107091

Published: Feb. 3, 2021

Language: Английский

Citations

45
Parental provisioning drives brain size in birds DOI Creative Commons
Michael Griesser, Szymon M. Drobniak,

Sereina M. Graber

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2023, Volume and Issue: 120(2)

Published: Jan. 6, 2023

Large brains support numerous cognitive adaptations and therefore may appear to be highly beneficial. Nonetheless, the high energetic costs of brain tissue have prevented evolution large in many species. This problem also a developmental dimension: juveniles, with their immature poorly performing brains, would face major hurdle if they were pay for construction own brain, especially larger-brained Here, we explore possible role parental provisioning development adult size birds. A comparative analysis 1,176 bird species shows that various measures (precocial vs. altricial state at hatching, relative egg mass, time spent young) strongly predict across The hypothesis provides an explanation well-documented but so far unexplained pattern birds larger than precocial ones. We conclude allowed overcome seemingly insurmountable constraint on growing which turn enabled increase survival population stability. Because including eco- socio-cognitive predictors only marginally improved explanatory value our models, these findings suggest traditionally assessed abilities largely successful provisioning. Our results indicate underlying provide behavioral flexibility facilitating reproductive success survival.

Language: Английский

Citations

19
Avialan-like brain morphology in Sinovenator (Troodontidae, Theropoda) DOI Creative Commons
Congyu Yu, Akinobu Watanabe, Zichuan Qin

et al.

Communications Biology, Journal Year: 2024, Volume and Issue: 7(1)

Published: Feb. 10, 2024

Many modifications to the skull and brain anatomy occurred along lineage encompassing non-avialan theropod dinosaurs modern birds. Anatomical changes endocranium include an enlarged endocranial cavity, relatively larger optic lobes that imply elevated visual acuity, proportionately smaller olfactory bulbs suggest reduced capacity. Here, we use micro-computed tomographic (μCT) imaging reconstruct its neuroanatomical features from exceptionally well-preserved of Sinovenator changii (Troodontidae, Theropoda). While overall morphology resembles typical other troodontids, also exhibits unique are similar paravian taxa non-maniraptoran theropods. Landmark-based geometric morphometric analysis on shape avialan points most closely resembling Archaeopteryx, thus indicating acquisition avialan-grade in troodontids wide existence such architecture Maniraptora.

Language: Английский

Citations

7
Comparative brain structure and visual processing in octopus from different habitats DOI Creative Commons
Wen‐Sung Chung, Nyoman D. Kurniawan, N. Justin Marshall

et al.

Current Biology, Journal Year: 2021, Volume and Issue: 32(1), P. 97 - 110.e4

Published: Nov. 18, 2021

Language: Английский

Citations

36