Years After Mating, Eagle Rays Finally Give Birth
by Stephen Messenger
The marine biologists at Australia’s Oceanworld Manly aquarium may be well-versed in the facts of life, but it’s never too late to learn a bit more about how exactly babies are made. Recently, twelve healthy baby rays were birthed at the facility by a pair of females, much to the confusion of aquarium staff. What’s so puzzling about that? Well, the new mothers haven’t had any contact with a male stingray for over two years.
Researchers point out that some female marine animals, like rays and sharks, have been known to store sperm until just the right moment to conceive. But, according to a report from Australia’s Daily Telegraph, never before have biologists observed rays put off starting a family so long after the initial reproductive deed was done. In fact, pregnancy was the last thing on their minds when they noticed two of their rays were starting to plump up…
(read more: TreeHugger)
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