ArticleScientific reports2017
Brain size is reduced by selection for tameness in Red Junglefowl- correlated effects in vital organs.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed, 37 citations in OpenAlex.
- Comprehensive transcriptomics comparison reveals switch of gene networks in the brain during silkworm domestication.Insect science · 2026Article
- Selection for Tameness in Red Junglefowl Recapitulates Genetic Loci Associated With Domestication-Related Brain Composition.Molecular ecology · 2025Article
- Selection for tameness alters play-like behaviour in red junglefowl in line with effects of domestication.Biology letters · 2025Article
- Feeding flaxseed to chicken hens changes the size and fatty acid composition of their chicks' brains.Frontiers in physiology · 2024Article
- Domesticated chickens interact more with humans and are more explorative than Red Junglefowl.Frontiers in veterinary science · 2024Article
- Quantum Leaps in Human Biocultural Evolution and the Relationship to Cranial Capacity.Life (Basel, Switzerland) · 2023Article
- Article
- Endocranial volume increases across captive generations in the endangered Mexican wolf.Scientific reports · 2022Article
- Article
- Cranial volume and palate length of cats,Royal Society open science · 2022Article
- Article
- Gut Microbiota Linked with Reduced Fear of Humans in Red Junglefowl Has Implications for Early Domestication.Advanced genetics (Hoboken, N.J.) · 2021Article
- Role of juvenile hormone receptorZoological research · 2021Article
- Tameness correlates with domestication related traits in a Red Junglefowl intercross.Genes, brain, and behavior · 2021Article
- Cerebellum size is related to fear memory and domestication of chickens.Biology letters · 2021Article
- Domestication and Feed Restriction Programming Organ Index, Dopamine, and Hippocampal Transcriptome Profile in Chickens.Frontiers in veterinary science · 2021Article
- Selection for reduced fear in red junglefowl changes brain composition and affects fear memory.Royal Society open science · 2020Article
- Transcriptome changes underlie alterations in behavioral traits in different types of chicken.Journal of animal science · 2020Article
- Hypotheses for the Evolution of Reduced Reactive Aggression in the Context of Human Self-Domestication.Frontiers in psychology · 2019Article
- The Australian dingo: untamed or feral?Frontiers in zoology · 2019Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
During domestication animals have undergone changes in size of brain and other vital organs. We hypothesize that this could be a correlated effect to increased tameness. Red Junglefowl (ancestors of domestic chickens) were selected for divergent levels of fear of humans for five generations. The parental (P0) and the fifth selected generation (S5) were culled when 48-54 weeks old and the brains were weighed before being divided into telencephalon, cerebellum, mid brain and optic lobes. Each single brain part as well as the liver, spleen, heart and testicles were also weighed. Brains of S5 birds with high fear scores (S5 high) were heavier both in absolute terms and when corrected for body weight. The relative weight of telencephalon (% of brain weight) was significantly higher in S5 high and relative weight of cerebellum was lower. Heart, liver, testes and spleen were all relatively heavier (% of body weight) in S5 high. Hence, selection for tameness has changed the size of the brain and other vital organs in this population and may have driven the domesticated phenotype as a correlated response.
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