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Posted on Wednesday, May 23, 2007
Female sharks 'can give birth without mating'
The discovery could have solved a mystery which has baffled experts studying the species in captivity.
An international team of researchers based in Northern Ireland and the United States made the breakthrough after a hammerhead shark gave birth without mating with a male.
No traces of any paternal DNA were detected in the offspring.
The researchers, from Queen's University Belfast, the Guy Harvey Research Institute at Nova Southeastern University in Florida, and Henry Doorly Zoo in Nebraska, found evidence that sharks can reproduce asexually by the unusual parthenogenesis method.
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