Robert Kuhn

Robert Kuhn

Jan 14, 2025

Group 6 Copy 14
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Molecular Work Almost Finished

We have worked through most of our pillbug samples, extracting DNA and doing PCR for CO1 mitochondrial haplotypes and SRDs through 4 primer sets. It has been a lot of work on a school schedule but we are almost there, with Washington state the remaining group and some redo samples for failed extractions or PCRs.

One interesting surprise was the lack of any Wolbachia in our Hawaiian samples. We evaluated almost 50 pillbugs from one location on the big island and had no positives for Wolbachia or the f-element.

I will adjust the timeline a bit since we hope to have all of the molecular work finished by March and then spent time looking at the data. So far we have done ~250 pillbugs and 1500 PCR reactions, sequencing all CO1 and those positive for Wolbachia and/or f-element!

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About This Project

The maternally vertical transmitted bacterial reproductive parasite Wolbachia occurs in ~50% of all arthropods including the pillbug Armadillidium vulgare. In some pillbugs, Wolbachia feminizes genetic male offspring into functioning anatomical females. A second feminizing phenomenon is a nuclear insert called the f-element. We will be the first to determine the frequency of thes two sex ratio distorter distribution in A. vulgare across the United States.

Blast off!

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