As much as a quarter of Trinidadian guppy offspring are sired by dead males.
Death doesn't stop some animals from becoming parents, research reveals.
A new study shows that female Trinidadian guppies can store and use sperm from males long after the males die. Up to a quarter of guppy offspring are sired by dead males, maintaining a diverse gene pool even in harsh environments, the study showed.
In many species — including ants, turtles, bats and even whale sharks — females can save up sperm in their reproductive tract and use it later to fertilize eggs and produce offspring.
Sometimes, sperm can be stored sperm for more than a year. But previously, this phenomenon had been observed only in the laboratory.
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