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submitted 10 months ago by boem@lemmy.world to c/world@lemmy.world
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[-] trxxruraxvr@lemmy.world 58 points 10 months ago

no one can agree why

I think most people can agree it's a combination of pollution, overfishing and climate change. Probably just unclear which one of those factors in the most.

[-] Enkers@sh.itjust.works 42 points 10 months ago* (last edited 10 months ago)

Crazy idea, but what about fishing-driven evolutionary pressure. If all the biggest fish are getting caught and killed, won't that give smaller fish an evolutionary advantage?

[-] trxxruraxvr@lemmy.world 21 points 10 months ago

Very possible, but with all things happening it's pretty hard to be sure it's that and not fish growing less because they're being poisoned by microplastics.

[-] Enkers@sh.itjust.works 7 points 10 months ago

For sure. That's probably just a +1 on to the factors you already listed.

[-] trxxruraxvr@lemmy.world 6 points 10 months ago

I would list that under overfishing

[-] shalafi@lemmy.world 7 points 10 months ago

Nailed it. Exactly the answer I read in an article way back when. Commented on it above.

Remove the big fish, only the smaller ones that came to maturity faster get to reproduce.

[-] DmMacniel@feddit.de 2 points 10 months ago

Given nature's survival of the fittest, you miiight be onto something.

[-] john89@lemmy.ca 0 points 10 months ago

He's not. It's the big fish that avoid getting caught.

[-] john89@lemmy.ca 1 points 10 months ago* (last edited 10 months ago)

If all the biggest fish are getting caught and killed, won’t that give smaller fish an evolutionary advantage?

Fishing is a little bit different than that. It's the big fish who are able to avoid getting caught, which is how they get to live to be so big.

[-] Enkers@sh.itjust.works 9 points 10 months ago

Maybe if we're talking line fishing, but I'm pretty sure most commercial fishing is done with trawling nets, where everything above a certain size is caught.

[-] illi@lemm.ee 1 points 10 months ago
this post was submitted on 08 May 2024
137 points (98.6% liked)

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