Caroline Durif

speaker

146 appearances 1 recordings 1 series first heard Nov 2025 last heard 26 Nov

Caroline Durif’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 1 in all, peaking in Nov 2025 with 1.

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The Infinite Monkey Cage · What’s the deal with eels? – Lucy Porter, David Righton and Caroline Durif · 26 Nov 2025 podcast

Some scientists believe that there are spawning areas in the Mediterranean.

So this, I think for me, that was a species where there's so many mysteries.

Also, we don't know what triggers sexual maturation.

So there's been experiments where we inject them with hormones, but we've never really found the natural triggers for sexual maturation.

So there...

If they stay in continental waters, then they're eternal adolescents in a way.

I just wanted to add also that we don't know how to farm or do aquaculture of eels.

Because we manage to fertilize them and to get larvae, but we don't know what to feed them.

So they die.

And that's a big problem.

So everybody relies on fishing glass eels and having on-growing farms, aquaculture.

We don't know what to feed the larvae.

We think that in nature, in the wild, they feed on what we call marine snow, and they have these, like David was describing, these very long teeth, and they don't really swim, so they drift with the Gulf Stream after they hatch, and they probably latch on to marine snow and feed on that.

And also since their drift takes two to three years to reach the coastline, then their diet probably changes and we're not able to reproduce that.

So there's a lot of fishing pressure also on the glass seals to have some kind of aquaculture.

Yeah, every other year.

There's a German team who sends a boat cruise, and they trawl, and they haven't caught any eels.

They catch larvae, and so they add to the database of the size of the larvae, but they've never...

They've even tried to, because the way now we can make an eel sexually mature by injecting hormones.

So the people, the first scientists who did that, that was in the 60s in Paris, in actually where Pierre and Marie Curie worked.

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