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Vertebrate evolution has made surprising differences: larger brains with lower longevity and fecundity

 Last Update: 2022-09-10
 Source: Internet
 Author: User

Only part of the current hypothesis is universally valid

In their study, recently published in the Journal of Evolutionary Biology, the two researchers tested three of the most prominent of these hypotheses in fish — the expensive organization hypothesis, the social brain hypothesis, and the cognitive buffering hypothesis

However, the study failed to test other hypotheses, explaining Stefan Fischer, lead author from the Konrad Lorenz Institute of Animal Behavior in Vetmeduni: "Contrary to expectations, the lifespan of large-headed fish has been shortened, and there is a trend that species undergoing parenting have smaller

Basic assumptions should be tested with different taxonomic units

In summary, some of the potential costs and benefits of the big brain (reduced fertility) and benefits (increased sociality) seem to be pervasive for vertebrates, while others have more lineage-specific effects

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