Thursday, May 27, 2010

Two videos

I wanted to add a couple videos in addition to the pictures from the previous post. These two videos show the view from our microscope of a pollinating foundress. We were taking measurements of female-phase fruits (as opposed to male-phase fruits, which we've spent the majority of our time collecting). Fruits are in female-phase when new foundress pollinators arrive and start to oviposit into the ovules within the syconia. Usually we open these syconia up, and the foundresses are dead. But in a few of the syconia we opened earlier, the foundresses awoke and started doing their thing. It's quite amazing; their bodies are torn apart after squeezing through the ostiole (a small hole) of the syconia. Despite this, they continue to actively pollinate and oviposit. I had never seen this behavior in action before. The small yellow ovipositor is actually pulled down from the black sheath during oviposition. You can almost see it hanging down from her abdomen in the first video.


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