Laurel
Kitty Mama
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- Aug 27, 1999
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http://blogs.scientificamerican.com/octopus-chronicles/files/2013/12/octopus_sucker_label.jpg
We all know that the male octopus uses his third right arm as a penis. (Oh, you didn’t? It’s true. Sometimes he even detaches it to give to the female.)
In fact, all of the arms, if not so specialized, are easily identifiable—as numbers one, two, three or four on the left or right side. This simple scheme helps scientists track whether an octopus prefers a left or right side (they do seem to exhibit a “handedness”) and how frequently it uses different arms for various tasks—from crawling to feeling.
But we have no such way to identify each arm’s hundreds of suckers. This is a sticking point for scientists, who are not able to dive into more specific research of the capabilities, sizes and various uses of these impressive organs—which can vary in size to a matter of millimeters to several centimeters across.
A team of researchers is thus calling for a universal code to ID specific octopus suckers. “In scientific communication, a common terminology is essential,” the team wrote in a paper on the matter, published last month in Marine and Freshwater Behavior and Physiology.
But it is not so simple as appending numbers one through 2,240 to these appendages.
We all know that the male octopus uses his third right arm as a penis. (Oh, you didn’t? It’s true. Sometimes he even detaches it to give to the female.)
In fact, all of the arms, if not so specialized, are easily identifiable—as numbers one, two, three or four on the left or right side. This simple scheme helps scientists track whether an octopus prefers a left or right side (they do seem to exhibit a “handedness”) and how frequently it uses different arms for various tasks—from crawling to feeling.
But we have no such way to identify each arm’s hundreds of suckers. This is a sticking point for scientists, who are not able to dive into more specific research of the capabilities, sizes and various uses of these impressive organs—which can vary in size to a matter of millimeters to several centimeters across.
A team of researchers is thus calling for a universal code to ID specific octopus suckers. “In scientific communication, a common terminology is essential,” the team wrote in a paper on the matter, published last month in Marine and Freshwater Behavior and Physiology.
But it is not so simple as appending numbers one through 2,240 to these appendages.
- read the full article Octopus, How Do You Count Your Suckers? (from Scientific American)