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by KRISTIN LARMORE
Intern News Reporter
Senior criminal justice major Katherine “Katie” McSwain caught a small freshwater jellyfish swimming around the edge of Appalachian State University’s Duck Pond Thursday.
McSwain said she was standing in front of the metal railing bordering the side of the pond, looked into the water and saw the jellyfish.
“No one believed me, and I got a net…it was easy because [it] was available,” McSwain said.
She said she put the jellyfish in a cup and took it to James S. Barbee, one of her former professors in the biology department.
Barbee said the paper-thin organism was about half-inch to one-third inch thick in diameter.
The freshwater jellyfish, “Craspedacusta sowerbyi,” has two main phases or life cycles during its lifetime, he said.
It could
be in the asexual reproducing hydra stage, in which it attaches itself
to some surface like a rock or vegetation with its tentacles.
Or, the jellyfish could be in the medusa phase or sexual phase, when it takes on an umbrella-like shape.
“It is a very exotic thing to see…normally we attribute jellyfish to salt water,” Barbee said.
Shea R.
Tuberty, an Appalachian biology professor who specializes in freshwater
marine biology said there has been a jellyfish in Duck Pond before, but
it has probably been around 10 years since one was found.
“A lot
of fish eggs can be carried on the feet and feathers of foul,” Tuberty
said in regards to how he thinks the jellyfish made its way to Duck
Pond.
Though fairly rare, there have been jellyfish sightings throughout the United States.
The
particular jellyfish found in Duck Pond happened to be in the medusa
stage, a rare occurrence because it is in the hydra stage most of its
life.
Scientists currently cannot explain why they do this, or predict when or how often they change, Tuberty said.
He said
many people do not realize even as scientists there are many things he
and his colleagues still do not know about what they study.
“That is
kind of the way things are…what we know about them is that we don’t
know much about them…no one is able to study them on a regular basis,”
he said.
The
jellyfish was released back into the pond, but university biologists
would like to retrieve it again so they can do some testing and learn
more about these rare creatures.
There
might be more jellyfish in the pond, Tuberty said, but they would be
very difficult to find, and it would involve some exhaustive collecting
to accurately report the number, if there were more.
Tuberty
said he attributes the sighting to the warmer weather this summer, as
freshwater jellyfish are only found in warm waters.
If
students are concerned about seeing jellyfish at the annual Polar
Plunge held spring semester, Tuberty said the water would not be warm
enough.
He said he does not believe the jellyfish found in Duck Pond could sting a person.
Although
the tentacles are poisonous and sting tiny protozoans, they are
extremely small and most likely do not pose any danger, Tuberty said.
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