Developmental Cell, Год журнала: 2025, Номер unknown
Опубликована: Май 1, 2025
Язык: Английский
Science Advances, Год журнала: 2021, Номер 7(18)
Опубликована: Апрель 28, 2021
An in-depth look at mammalian brain size evolution prompts a reevaluation of traditional paradigm.
Язык: Английский
Процитировано
139
Nature, Год журнала: 2024, Номер 629(8013), С. 851 - 860
Опубликована: Апрель 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.
Язык: Английский
Процитировано
92
Proceedings of the National Academy of Sciences, Год журнала: 2022, Номер 119(11)
Опубликована: Март 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.
Язык: Английский
Процитировано
68
Science Advances, Год журнала: 2021, Номер 7(31)
Опубликована: Июль 30, 2021
Ecological or sensory system shifts associated with brain shape and size change may have contributed to unique avian survivorship.
Язык: Английский
Процитировано
61
Nature Ecology & Evolution, Год журнала: 2022, Номер 6(9), С. 1381 - 1389
Опубликована: Июль 11, 2022
Язык: Английский
Процитировано
54
Nature Ecology & Evolution, Год журнала: 2024, Номер 8(8), С. 1534 - 1542
Опубликована: Июль 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.
Язык: Английский
Процитировано
14
Molecular Phylogenetics and Evolution, Год журнала: 2021, Номер 158, С. 107091 - 107091
Опубликована: Фев. 3, 2021
Язык: Английский
Процитировано
45
Proceedings of the National Academy of Sciences, Год журнала: 2023, Номер 120(2)
Опубликована: Янв. 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.
Язык: Английский
Процитировано
20
Communications Biology, Год журнала: 2024, Номер 7(1)
Опубликована: Фев. 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.
Язык: Английский
Процитировано
7
Current Biology, Год журнала: 2021, Номер 32(1), С. 97 - 110.e4
Опубликована: Ноя. 18, 2021
Язык: Английский
Процитировано
37