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Why are the offspring of older mothers less fit to live long and prosper?

In a new study in rotifers (microscopic invertebrates), scientists tested the evolutionary fitness of older-mother offspring in several real and simulated environments, including laboratory culture, under threat of predation in the wild, or with reduced food supply. They confirmed that this effect of older maternal age, called maternal effect senescence, does reduce evolutionary fitness of the offspring in all environments, primarily through reduced fertility during their peak reproductive period. They also suggest an evolutionary mechanism for why this may occur.
Disclaimer: This story is auto-aggregated by a computer program and has not been created or edited by HFACULTY News. Publisher: Top Health News — ScienceDaily Click this link to read the full content from the Publisher Read More

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