How do cockroaches and mosquitoes know the difference betwee

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kumar985
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How do cockroaches and mosquitoes know the difference betwee

Post by kumar985 » Mon Nov 04, 2013 12:23 pm

How do cockroaches and mosquitoes know the difference between light and dark?
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dgm
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Post by dgm » Mon Nov 04, 2013 1:33 pm

What do you mean?
They have eyes so they can see if there is light around or not..

Indeed, eyes can be used for both perception of forms and intensity of ligth (and thus perception of a light or dark environment) but invertebrates can also have specific receptors for the intensity of light.
From this post
http://www.macrostylis.com/en/articles/ ... ptors.html
it seems that some insect larvae can even perceive the intensity of light from organs in the trunk, although I do not know if it is the case for cockroaches and mosquitoes..

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bioduchamp
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Post by bioduchamp » Fri Nov 29, 2013 12:52 pm

yep. Eyes are good for that
Evolution is the fundamental idea in all of life science - in all of biology.

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