Rare Male Sea Dragon Pregnant


After setting the mood with lighting and finessing, the Georgia Aquarium’s attempts to coax rare sea dragons to mate have finally worked — just in time for Father’s Day. The pregnant male weedy sea dragon is now only the third of its kind in the United States to successfully become pregnant outside of its natural habitat.

The sea dragon, found in nature only in the waters off southern Australia, became pregnant Tuesday when a female transferred her eggs onto his tail. Dennis Christen, assistant manager of animal care and husbandry, said that male sea horses, sea dragons and pipe fish all carry the eggs instead of the female.

Christen said that recently the staff took steps to try to assist in mating. They altered the mood by adjusting the lighting and thinning the plants, Christen said.

But so much is unknown about the creatures, including their mating routines, that a lot about the pregnancy remains a mystery, Christen said.

When the animals finally do mate, the sea dragons arch their tails and swim side by side until they latch onto each other before swimming vertically together during their version of a “date.”

“When they’re courting they do a really ritualistic dance,” he said.

What little is known about that dance could hold a key to problems with breeding the animals in small tanks similar to those at the aquarium.

“Some people think that problems are if the tank isn’t deep enough they don’t have enough time to swim vertically,” Christen said.

Of the 70 small pink eggs wrapped around the male’s tail, nobody knows how many are viable and could actually hatch. Christen said that they are relying on other experiences with breeding, where about 60 percent of the eggs survived, to estimate how things may go. At the Georgia Aquarium, children and teachers were abuzz about the pregnant dragon and circled around the tank trying to pick it out.

“Which one is the mommy?” one little boy shouted before a guide corrected him and said the male was carrying the eggs.

When the eggs hatch, Christen said they will essentially be miniature versions of the adults. And unlike many animals the weedy sea dragons will not spend their first days, weeks and months shadowing their parents to learn.

“They basically hatch and are on their own,” he said. “There’s no real parental training.”

The eggs are expected to hatch in four to six weeks

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{ 1 comment… read it below or add one }

Ted November 8, 2008 at 5:21 pm

So did they hatch???

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