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Old 04-06-2005, 09:24 PM   #1
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Tree Frog question for Frog Girl

Frog Girl,

I have Eastern Gray Treefrogs (Hyla versicolor) that visit my ponds to breed. I live on the edge of a 15-20 acre mini-forest, very mature trees I guess 80+years for the biggest.
I can't find any info on this, just observation from myself and my wife. We've noticed that these frogs only seem to come around to breed every two years? Is this true?

I swear, they are only out calling every other year, and that's the only time I find eggs/tadpoles. They are impossible to miss, they are loud as... motorcycles or so.

You know anything about this?


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Old 04-06-2005, 11:47 PM   #2
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I have never heard of this corvus. Frog breeding is highly tied to rainfall though so if you were having rainy years every other year that would account for it. It is also possible that some sort of predator prey cycle is going on & that frog populations peek every other year (Unlikely though because most things that eat frogs eat other things too so a low frog population probably wouldn't cause the predator population to crash).

I can't really think of another reason unless they are doing spraying for mosquitos only every other year or something. Those sort of toxins can zap frogs sometimes. I am not sure of the lifespan of Hyla versicolor (if they are annual or usually live for a couple years). I'm sorta stumped but there are so many undocumented biological phenomenon out there that it doesn't suprise me that you have a cyle going.

Anyway I am sooo jealous. I am working hard to turn my little piece of the city into something resembling a wildlife habitat but its sure slow going. The frogs here are explosive breeders that come out just for a couple months and then burrow back into the ground to sleep until the next spring rains. My pond is permanent so it isn't really suitable for them. We are going to try to put in a wee playa lake (they dry up seasonally & have no fish) in the prarie I am planting though & then I can import some tads from nearby.
"great spirits have always encountered violent opposition from mediocre minds" - Albert Einstein
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Old 10-30-2005, 02:51 PM   #3
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I have tons of wetlands near my house and am sort of hoping that the frogs will breed in my pond. No luck yet though. Would it be ok to bring a few frogs over or a few tadpoles if I can catch them?
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