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submitted 1 month ago by boem@lemmy.world to c/world@lemmy.world
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[-] trxxruraxvr@lemmy.world 58 points 1 month 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 1 month ago* (last edited 1 month 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 1 month 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 1 month ago

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

[-] trxxruraxvr@lemmy.world 6 points 1 month ago

I would list that under overfishing

[-] shalafi@lemmy.world 7 points 1 month 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 1 month ago

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

[-] john89@lemmy.ca 0 points 1 month ago

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

[-] john89@lemmy.ca 1 points 1 month ago* (last edited 1 month 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 1 month 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 1 month ago
this post was submitted on 08 May 2024
137 points (98.6% liked)

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