Frog sex and phototaxis

April 10, 2017  •  Leave a Comment

The day's adventure took place after dark: a return trip to the University of Rhode Island's W. Alton Jones campus in very rural West Greenwich, Rhode Island, to go on a night walk with the Environmental Education Center staff. Our agenda was to explore the vernal pools and, if we were lucky, observe Woodcock doing the courtship flying routine that pioneer conservation biologist Aldo Leopold dubbed the "sky dance." Sadly, the Woodcock weren't cooperating, but the vernal pools provided everything we might have hoped for. There were Spring Peepers calling everywhere, including one announcing its presence in a wet spot in a field that was supposed to harbor Woodcock. When we, using all of our patience skills... and many eyes... finally located the amphibian, one turned out to be two: a pair in amplexus—Latin for "embrace." Any of the teachers unfamiliar with the term embraced it, and we all had a good time talking about how we might teach the concept of amphibian mating techniques to middle-schoolers. At the vernal pool proper, we experienced a less-red-faced discussion topic: phototaxis, or, easier on the student ear, the attraction many invertebrates, Fairy Shrimp among them, have for light.


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