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June 13, 2008

Friday Squid Blogging: Cuttlefish Embryos Can See

Usually, cuttlefish eggs lie in an envelope full of black ink. But this clears as the embryos grow older, leaving them growing within translucent eggs.
These unborn cuttlefish also have fully developed eyes. That leads the researchers to conclude that the cuttlefish embryos must peer through their eggs, and learn to recognise their prey, a behaviour which will help give them a head-start in life.

Tags: squid

Posted on June 13, 2008 at 4:39 PM • 7 Comments

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Comments

Old Bogus • June 13, 2008 11:20 PM

Within the stated parameters of the experiment, how would the cuttlefish know crabs they had seen as embryos were prey? Obviously once free and hungry, they intuit what is food and what is not.

Maybe what they learned was crab behavior making them easier to catch once they know they are food.

These are opportunistic eaters, kinda like cane toads, and, unless conditioned against against a species by taste, will eat anything. I think the researchers need a more in depth interview process with the universal carnivores.

Singularity Shores • June 14, 2008 2:50 AM

> the researchers need a more in depth
> interview process with the universal
> carnivores.

I've heard that Bruce can communicate with sea life if you give him a decent smart phone.

Markus • June 15, 2008 6:06 AM

> I've heard that Bruce can communicate with sea life if you give him a decent smart phone.

Bruce Schneier already knows what sea live are thinking due to a flaw in their random number generation algorithm.

Andre LePlume • June 15, 2008 11:09 PM

Well, blowfish he probably knows...

Davi Ottenheimer • June 16, 2008 12:19 AM

That *is* weird.

The only purpose the researchers could think of for developed eyes was to recognize prey?

Bill • June 16, 2008 3:31 AM

If the eyes were fully transparent then they wouldn't work. Simple.

danetta • November 9, 2008 11:07 PM

i was told of cuttlefish covering large areas of water near hervey bay islands.what would they be and where do they come from?

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