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FILE – Charlotte, a round stingray, in an undated photo at the Aquarium and Shark Lab by Team ECCO in Hendersonville, N.C. The North Carolina aquarium that said it had a pregnant stingray with no male companion this winter now says the fish has died after suffering from a rare reproductive disease. The Aquarium and Shark Lab posted a statement on Facebook late Sunday, June 30, 2024 that said Charlotte had passed away. (Aquarium and Shark Lab by Team ECCO via AP) (Uncredited)

HENDERSONVILLE, N.C. – A stingray that got pregnant at a North Carolina aquarium this winter despite not having shared a tank with a male of her species for many years has died.

The Aquarium and Shark Lab in Hendersonville said on Facebook late Sunday that the stingray, Charlotte, died after getting a rare reproductive disease. It didn’t go into further detail.

The aquarium, which is in the Blue Ridge Mountains, announced in February that Charlotte had gotten pregnant despite not having shared a tank with a male stingray in at least eight years. But it said in late May that she was suffering from a rare reproductive disease and announced in early June that she hadn’t given birth and was no longer pregnant.

The pregnancy was thought to be the result of a type of asexual reproduction called parthenogenesis, in which offspring develop from unfertilized eggs, meaning there is no genetic contribution by a male. The mostly rare phenomenon can occur in some insects, fish, amphibians, birds and reptiles, but not in mammals. Documented examples have included California condors, Komodo dragons and yellow-bellied water snakes.

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