Sunday, May 17, 2009

More backyard ecology

A gray tree frog:

Missesmagette found this little guy hiding in our daylillies this afternoon. There are two species of gray tree frogs found in this area, the common gray tree frog, Hyla versicolor, and the southern (or "Cope's") gray tree frog, Hyla chrysoscelis. These two species appear identical except for their calls. Interestingly, Hyla versicolor is a tetraploid species, meaning that it has 4 sets of chromosomes as an adult (most vertebrates only have two sets of chromosomes and are referred to as "diploid"). Both of these closely related species can change colors to blend into their environment, which is why this little guy is such a pretty green.

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