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Sara Jobson

πŸ‘€ Speaker
31 total appearances
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Appearances Over Time

Podcast Appearances

Science Friday
A vast whale graveyard + Zombie sea cucumbers

Thank you for having us.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

Thanks for having us.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

Yeah.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

So I have to first give credit to one of the collaborators in the paper, Emmy Montgomery, who was a graduate student just before Sarah.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

And Emmy was the one to first say, why are there still feet in this space?

Science Friday
A vast whale graveyard + Zombie sea cucumbers

The feet became detached from the organism and they stayed in their general state for extended periods of time, days, weeks.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

months.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

And really, they shouldn't.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

So in marine systems, they should degrade, bacteria should attack them, and they should pretty much disappear.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

That didn't happen.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

So when Emmy Montgomery discovered that these feet were still here, we wanted to understand why.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

Yeah, that's part of the question that we're still trying to discover is what factors within the tube feet and the organism themselves allow them to persist under pretty significant bacterial pressure.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

Yeah, I think that the understanding that we can gain from this is pretty impressive.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

I mean, think about when you have an organ transplant or something like that, you're rushing so that the tissue doesn't die and nothing happens.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

If we can learn more about how a tissue is able to survive outside of the organism, maybe we can understand how to preserve it for longer for our benefit.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

That was one of our questions.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

So we actually added some nutrients in the form of amino acids.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

So we added supplemental amounts of that to the water.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

And we found that the podia or the tube feet were actually able to take up those nutrients without needing a digestive tract or mouth.

Science Friday
A vast whale graveyard + Zombie sea cucumbers

There's a number of different areas of research that will benefit.

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