ArticleEvolution; international journal of organic evolution2015
The effect of brain size evolution on feeding propensity, digestive efficiency, and juvenile growth.
Article in Evolution; international journal of organic evolution, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Fermentation technology as a driver of human brain expansion.Communications biology · 2023Review
- Divergence in brain size and brain region volumes across wild guppy populations.Proceedings. Biological sciences · 2022Article
- Understanding fish cognition: a review and appraisal of current practices.Animal cognition · 2021Review
- Lifetime Observation of Cognition and Physiological Parameters in Male Mice.Frontiers in behavioral neuroscience · 2021Article
- Annual variation in predation risk is related to the direction of selection for brain size in the wild.Scientific reports · 2019Article
- Large brains, short life: selection on brain size impacts intrinsic lifespan.Biology letters · 2019Article
- Early neurogenomic response associated with variation in guppy female mate preference.Nature ecology & evolution · 2018Article
- The Expensive-Tissue Hypothesis in Vertebrates: Gut Microbiota Effect, a Review.International journal of molecular sciences · 2018Review
- Testing ontogenetic patterns of sexual size dimorphism against expectations of the expensive tissue hypothesis, an intraspecific example using oyster toadfish (Ecology and evolution · 2018Article
- Female brain size affects the assessment of male attractiveness during mate choice.Science advances · 2017Article
- Increased juvenile predation is not associated with evolved differences in adult brain size in Trinidadian killifish (Ecology and evolution · 2017Article
- Predation pressure shapes brain anatomy in the wild.Evolutionary ecology · 2017Article
- Artificial selection on male genitalia length alters female brain size.Proceedings. Biological sciences · 2016Article
- On the role of body size, brain size, and eye size in visual acuity.Behavioral ecology and sociobiologyArticle
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
One key hypothesis in the study of brain size evolution is the expensive tissue hypothesis; the idea that increased investment into the brain should be compensated by decreased investment into other costly organs, for instance the gut. Although the hypothesis is supported by both comparative and experimental evidence, little is known about the potential changes in energetic requirements or digestive traits following such evolutionary shifts in brain and gut size. Organisms may meet the greater metabolic requirements of larger brains despite smaller guts via increased food intake or better digestion. But increased investment in the brain may also hamper somatic growth. To test these hypotheses we here used guppy (Poecilia reticulata) brain size selection lines with a pronounced negative association between brain and gut size and investigated feeding propensity, digestive efficiency (DE), and juvenile growth rate. We did not find any difference in feeding propensity or DE between large- and small-brained individuals. Instead, we found that large-brained females had slower growth during the first 10 weeks after birth. Our study provides experimental support that investment into larger brains at the expense of gut tissue carries costs that are not necessarily compensated by a more efficient digestive system.
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