Matrix XD

Matrix XD: Octopus Coconut shell

Octopus Coconut shellAustralian scientists have found an octopus in Indonesia coconut shell collecting to be home. This could be the discovery of advanced behavior for the first invertebrate animals (without the spine) that can use a tool.

Scientists have filmed the octopus marginatus that Amphioctopus middle-sorted collection of coconut shell on the ocean floor, emptied it, brought in under his body as far as 20 meters, and then set the two to form a ball shell hiding place.

Julian Finn and Mark Normann, from the Museum Victoria in Melbourne, for several times to visit North Sulawesi and Bali for diving, between the period 1998 to 2008, had seen strange activity carried out by four different octopus. Published their findings on Tuesday (15/12/2009) in Current Biology magazine.

"I got surprised," said Finn, a research biologist from the museum that specializes in Cephalopoda. "I mean, I often see octopus hiding behind a coconut shell, but I had never seen anyone able to take the shell, and pulled. I had to stifle a laugh."

Octopuses frequently use any goods for the shelter. But scientists have discovered that the blood vascular octopus was a step forward because it can set up shell from the coconut shell, carried by a good distance, then set them elsewhere.

"That is an example of the use of tools, which has never been found in invertebrate creatures before," said Finn.

"The difference from the land hermit crab is this octopus-shell collecting shell for use later, so when I move the shell, the octopus was not protected," said Finn. This is unique because the shell is not directly applicable, means the octopus is able to think for the future. "Because the shell can be collected for future use of this octopus is unique."

The researchers theorize that the most likely type of octopus that once was shelled. But once people know the split coconut shell and throw into the sea, the octopus was found a better way to take cover, said Finn.

This finding means, because it shows that animals are able to demonstrate a more complex behavior, according to Simon Robson, associate professor of tropical biology from James Cook University in Townsville.

"Octopus's prominence as an intelligent invertebrates," Robson explained. "They have the sense of sight is sufficiently developed and the brain smart enough. So I think these findings indicate a complex behavior ability to do this organism."

In scientific circles there is always debate about the definition of 'use of' in the animal world, according to Robson. Australian researchers describe the 'tool' as the goods are carried or stored for later use. But there are other scientists also different opinions, so it is difficult to determine with certainty whether this was the behavior of the use of invertebrate animals or not, Robson said. But somehow he still found it very interesting discovery.

"This is one more example that makes us realize how similar people and nature. We are merely an extension of this planet," he said.


Posted By Sutrisno
Created on Friday, December 18, 2009


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