Squid, octopus, and cuttlefish populations have been rising since the 1960s. Why? | Hacker News Reader

Squid, octopus, and cuttlefish populations have been rising since the 1960s. Why?

theatlantic.com

65 pointsPetiver56 comments

Overfishing

Less amount of economically valuable species of fishes = increase in squids, jellyfishes and unedible species. Nothing really new here.

Squid, octopus & cuttlefish are eaten all over the world...

Nowhere near as commonly as other fish, though (at least in most regions). In my circle of acquaintances very few are even willing to try octopus or squid, and I don't know anyone who eats cuttlefish. I live in the Midwest US, though. If I lived in Japan, I'm sure that'd be very different.

I'll grant that other fish are eaten more, but cephalopods are commercially fished as well.

And for anecdotes, I live in the Midwest US and had cuttlefish last week.

And I eat octopus on a semi-regular basis (and squid when I can convince people to get a Calamari appetizer), but it's not suuuper common here, unless they're big fans of sushi.

Those people do exist in the area, or the restaurants wouldn't bother to have them on the menu, it's just uncommon.

Not all, many species of cephalopods are unedible in fact.

Remotely relevant story from The Guardian this week:

Do you care about animals? Then you really shouldn't eat octopus - http://www.theguardian.com/commentisfree/2016/may/26/do-you-...

We should only care about animals if they're smart?

Who said anything about "only"? The article says:

> No one who considers themselves interested in the inner lives of animals, the wonders and mysteries of the natural world, can eat cephalopods in good conscience.

The article never says other animals are less deserving of care. The author is just particularly interested in octopus, and is appealing to the trait of intelligence.

I care about plants, therefore I do not eat them.

Many plants prefer you eat them as a method of seed propagation. If you care about plants eat their seeds and crap them on the forest floor...

Maybe it beats "because they're cute"?

(FWIW, I eat meat and think squid are delicious. Just posting a related link to see what discussion comes of it.)

I actually kill lobsters with a knife before eating them.

Argh. Horror.

That's honestly my criteria. Cephalopods, birds, and mammals are smart enough that I have personal moral issues with killing them for food, so I exclude them from my diet.

So what do you eat? Because grain and vegetable farming destroys ecosystems which causes the death of many of these animals too.

Where do you think animal feed comes from? It takes the times more farmland to raise a cow vs making bread.

How much protein do you get from bread, though? A calorie is not a calorie.

From 100 g of soybeans you get 36 g of protein, vs 30 g of protein from 100 g of beef.

Barring strange niche medical concerns that don't affect the vast majority of the population, humans can live healthily without any meat products.

Whether or not you personally choose to is not my concern, but the root of your argument doesn't really hold water.

Yes, but farming soybeans destroys land and is dependent on pesticides and chemicals from companies like Monsanto. Pasture-raised grass-fed beef instead revitalizes land, provides natural fertilizer for plant growth, and sequesters carbon from the atmosphere to combat climate change. Not all meat is the same.

The majority of beef raised in the US is raised on corn and soybeans.

Right. This needs to change.

I actually agree entirely, but factory farm meat will continue to be cheaper so long as corn subsidies are so high, and those aren't going anywhere any time soon. Which means that for the time being, meat consumption is the less environmentally friendly option.

Not all meat is the same. A slice of deli bologna isn't the same as a cut of pasture-raised sirloin. One comes from a factory that requires animal feed and antibiotics, the other comes from a farm that only needs sunlight, rain, and grass.

The argument was that it destroys habitats. "Pasture raised" animals are still taking up vastly more land per calorie produced, than regular farmland. In fact they take up even more than regular factory farm, because the factory farm is optimized towards efficiency and corn is more economically efficient feed than grass. There isn't enough pastures in the world to feed everyone pasture raised meat.

This is not true at all. The majority of the land mass on Earth is grassland. At least it used to be. What are now cornfields in North America used to be plains full of bison that fed on grass. We can re-create a similar ecosystem using high-yielding methods popularized by modern grass-fed operations like Polyface Farms, and management techniques like rotational grazing.

A grassy plain supports many fewer animals than the equivalent corn field. Otherwise there would be no economic incentive to grow corn instead of raising livestock on the same land. So you would need much more land to support the same amount of animals, land we just don't have.

Prior to Europeans arriving, it's estimated there were 60 million wild buffalo in the US. There are now 93 million cows in the US. And those cows are much fatter. Bred to produce more meat, grow faster. So consume much more food (and produce more per unit), so the comparison is even worse than that.

If you take the argument to those extremes, you'll end up not eating anything. Or you'll spend your entire life trying to work out what impact your actions might have in order to justify whether to take them or not. The OP clearly stated their criteria. You also have criteria for what you choose to eat which could just as easily be picked apart with similar reductio-ad-absurdum 'reasoning'.

Not necessarily. Eating pastured-raised grass-fed meat benefits the environment by nurturing soil and sequestering carbon. So if you base your diet around pasture raised meat and local produce, you can overcome many of the downsides of industrial farming while benefitting animals and the environment at the same time.

Well... very few pastures actually store anywhere near that amount of co2. my numbers are based on evaluations of carbon sinks in northern Europe (northern germany and Scandinavia) that my wife did. the publication is in Swedish, but if anyone is interested I can dig it up. The result was that less than 10% of optimal pastures(current and potential) were effective carbon sinks.

The females of the species have a most unfortunate habit:

http://www.bbc.com/earth/story/20150223-mysteries-of-canniba...

The males are kind of accustomed to being eaten.

"They're not just tentacles, they're genticles!"

With apologies to Futurama.

I'll suggest just ignoring this type of moral based statements structured as:

1- if A is true (meaning are you a good citizen or not?)

2- then do B

Hiding the fact that A is a emotional statement and can fit in lots of opposite cases and circumstances because is ambiguous and moral based, and "moral" is an elusive and unmeasurable concept.

Thus, A and B are presented as dependent variables without any proof of this, and in fact in most of the cases are unrelated.

"Do you care about animals (preyed by nasty tentacular predators)? then you really should eat octopus", works perfectly also.

A more useful conditional might be, "Do you avoid eating more intelligent animals? If so, you should avoid eating octopus."

Is it possible they have less predators?

Not only possible, that's the reason, as the article said.

It's simple. Natural habitants such as salmon have been fished to near extinction, and the squids are simply replacing their place in the eco system.

It appears this may be one of nature's "shock absorber" effects in response to reduction of fish population. The increase in cephalopods increase the food accessible by fish.

not if we can help it. Time to eat all the squids too!

If there is so much octopus, why do I rarely see it on a menu?

There's not much demand for it outside of Japanese cuisine. I keep hearing about how much better crickets and other insects are more efficient for protein, but supply and demand is why I have yet to see any sold for human consumption.

"There's not much demand for it outside of Japanese cuisine."

Some Spaniards will beg to differ.

Also, some Chinese. But there's only up to a billion of them, so not much demand.

Actually, flour made from crickets has been already available for some time: http://www.amazon.com/Cricket-Flour-made-100-22/dp/B00OMCTOD...

In Italy it's pretty normal to eat them.

I think they're fairly commmonly eaten in East Asia, e.g., Korea & coastal parts of China. Both as part of a meal and as snacks (dried squid is fairly common in Asian markets).

The little suckers on the tentacles are a pain to deal with. They can even get stuck in your mouth if you eat it wrong.

Do you live in a landlocked red state, by any chance?

That is not dead which can eternal lie, and with strange aeons, even death may die.

This is gonna be really dumb, but what's the difference between aeons, and eons? Or did I miss a really important day of school?

Edit: nevermind, I googled it, as I should have the first time. Turns out I was just too 'Merican.

AE often comes from Latin words, so yeah you'll see it more in European languages

Aeon comes from Greek αιών, that's why it has the ae.

Don't feel bad. I had exactly the same thought when I posted this, and also decided to Google it. I assumed aeon and eon where synonyms, but realized I'd never actually looked it up to confirm that. Now we know...

Well, the quote is from Lovecraft, who was himself American.

This is gonna be really dumb, but what's the difference betwen American and 'Merican ...

These are words of wisdom, let it be! https://www.youtube.com/watch?v=Lz1PtyYCrZQ

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