Ant Queens Give Birth to Two Species
In a discovery that astonished biologists, researchers revealed that queens of the Iberian harvester ant (Messor ibericus) can produce offspring belonging to two different species. This rare and complex reproductive system has never appeared in animals before and challenges long-standing ideas about what defines a species.
How Two Species Share a Mother
Normally, ant queens give birth only to their own kind. But in this case, Messor ibericus queens produced males that carry the genetic identity of another species, Messor structor. Scientists traced the mitochondrial DNA back to the M. ibericus queens, yet the nuclear DNA of these males matched M. structor. In other words, the queens cloned the genetic material of another species inside their eggs. When they mated with M. structor males, they also created hybrid workers that kept the colony functioning.
A Concept That Redefines Species
Researchers named this phenomenon “xenoparity,” or “foreign birth,” to describe how one species generates individuals of another. The two species diverged more than five million years ago, but the queens still reproduce across this boundary. Such an extraordinary system blurs the traditional definition of species, which assumes members reproduce only with their own kind.
Why This Matters
This reproductive trick may represent an evolutionary strategy in which one species borrows another’s genetics for survival. Scientists now investigate how common this behavior is and what long-term effects it may carry. The discovery forces biologists to rethink ant reproduction and raises deeper questions about how flexible the boundaries of life can be.
