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Plagued by predators in the sea, these fish are moving onto land

 
Face Palmer
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03/20/2017 05:13 AM
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Plagued by predators in the sea, these fish are moving onto land
On the remote Pacific island of Rarotonga, some fish are fleeing to land.

Scientists have long suspected that blenny fish leapt out of water to escape the many sea creatures that seek to eat them, but the blennies' true motivations remained a mystery. Now, in a study published this week in The American Naturalist, researchers show that these sausage-shaped fish were over three times more likely to be devoured in the sea than on land, giving credence to this theory.

"It turns out the aquatic environment is a nasty place for blennies, full of enemies wanting to eat these small fish. But life is less hostile on the rocks, with birds their main worry,” says Terry Ord, the study’s lead author and evolutionary ecologist from the University of New South Wales, in Sydney, Australia.

To find out, Ord and his team visited Raratongo Island, where several species of blenny are regularly found lying on the ground near the water. The team fashioned 250 fake plastic blennies, about 2.5 inches long, with lifelike colorings and patterns. Half of the mimics were put in the water, and the other half were fully exposed on dry land. Predatory attacks on the mimics were observed over eight days, and the results suggest that blennies are much safer on land. “There were at least three times more attacks on our model blennies placed in the water than there were on models positioned on land,” says Ord.

So although being hacked to death by predatory seabirds surely isn’t a great way to go, it seems the blennies prefer that alternative to whatever ravenous creatures lurk in the sea.

[link to www.popsci.com]
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whatthehellll?

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03/20/2017 05:23 AM
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Re: Plagued by predators in the sea, these fish are moving onto land
I have often thought, while viewing underwater documentaries, how dog eat dog and ruthless life can be under the water.

Maybe even we fledgling humans jumped ashore and became air breathers for this same reason.

Fascinating story.
whatthehellll?

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03/20/2017 05:26 AM
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Re: Plagued by predators in the sea, these fish are moving onto land
On the remote Pacific island of Rarotonga, some fish are fleeing to land.

Scientists have long suspected that blenny fish leapt out of water to escape the many sea creatures that seek to eat them, but the blennies' true motivations remained a mystery. Now, in a study published this week in The American Naturalist, researchers show that these sausage-shaped fish were over three times more likely to be devoured in the sea than on land, giving credence to this theory.

"It turns out the aquatic environment is a nasty place for blennies, full of enemies wanting to eat these small fish. But life is less hostile on the rocks, with birds their main worry,” says Terry Ord, the study’s lead author and evolutionary ecologist from the University of New South Wales, in Sydney, Australia.

To find out, Ord and his team visited Raratongo Island, where several species of blenny are regularly found lying on the ground near the water. The team fashioned 250 fake plastic blennies, about 2.5 inches long, with lifelike colorings and patterns. Half of the mimics were put in the water, and the other half were fully exposed on dry land. Predatory attacks on the mimics were observed over eight days, and the results suggest that blennies are much safer on land. “There were at least three times more attacks on our model blennies placed in the water than there were on models positioned on land,” says Ord.

So although being hacked to death by predatory seabirds surely isn’t a great way to go, it seems the blennies prefer that alternative to whatever ravenous creatures lurk in the sea.

[link to www.popsci.com]
 Quoting: Face Palmer




Pined!

Last Edited by whatthehellll? on 03/20/2017 05:27 AM
Face Palmer  (OP)

User ID: 43285854
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03/20/2017 07:53 AM
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Re: Plagued by predators in the sea, these fish are moving onto land
I have often thought, while viewing underwater documentaries, how dog eat dog and ruthless life can be under the water.
 Quoting: whatthehellll?


Its not much different on land
"The world will soon wake up to the reality that everyone is broke and can collect nothing from the bankrupt, who are owed unlimited amounts by the insolvent, who are attempting to make late payments on a bank holiday in the wrong country, with an unacceptable currency, against defaulted collateral, of which nobody is sure who holds title."

Never attribute to malice that which is adequately explained by stupidity.

The woman who is not pursued sets up the doctrine that pursuit is offensive to her sex, and wants to make it a felony. No genuinely attractive woman has any such desire. - H.L. Mencken, In Defense Of Women





GLP