DETROIT-- Officials at the aquarium on Belle Isle are trying to figure out how one of their sharks got pregnant with no male shark around. A white spotted bamboo shark hatched several eggs, but had not mated with a male shark, according to officials at the facility. The shark was in a tank with another female shark. "We think it is a case of parthogenosis, virgin birth," said Doug Sweet, curator of fishes. Zoo and aquarium officials across the nation are trying to figure out what happened. They think it may be something genetic in the shark triggered in females...
