Pillbug

Sample information

Picture
Photos by: Remi P
Location
Collection date 09/26/2025
Captive / Cultivated? Wild-caught
Group Berkshire Community College
Observations

It was outside near the corner of the building in moist dirt near leaves and rocks.

Putative identification Arthropoda Malacostraca Isopoda Armadillidae

Methods

Extraction kit Monarch DNA extraction (NEB)
DNA extraction location Abdomen
Single or Duplex PCR Duplex Reaction
Gel electrophoresis system Edvotek Gel Electrophoresis
Buffer 1X TAE
DNA stain SYBR Safe
Gel images
Protocol notes

Our first PCR reaction was set up on 10/14/25 and was a duplex reaction because we used both the Arthropod CO1 and Wolbachia 16S primes together. We used an annealing temperature of 49 degrees celsius. We used this Taq polymerase: New England Biolabs OneTaq Hot Start Quick-Load 2X Master Mix with Standard Buffer (#M0488S).

 

We used a DNA extraction protocol based on the insect adaptation of New England Biolabs Monarch Spin gDNA Extraction kit. (Product #T3010).

The specimen was incubated for 30 minutes in a hot water bath at 56 degrees C.

 

Our second PCR reaction was set up on 10/28, we used the same Taq polymerase as the first PCR reaction and it was a duplex reaction that used Arthropod C01 and Wolbachia 16S primers. We used an annealing temperature of 49 degrees celsius.

Our second gel image was taken on 11/4/25 and was run at 125 volts for 25 minutes. We used the New England Biolabs 1 kb Plus DNA Ladder for safe stains (product #N0559S)

Results

Wolbachia presence Unknown
Confidence level High
Explanation of confidence level

My arthropod tested positive for Wolbachia, but it did not have a band for arthropod DNA. Therefore, I am not confident in the results.

I ran another duplex PCR, and my results showed nothing for Wolbachia. There was also no band showing any arthropod DNA, so I am confident that something went wrong in the beginning, maybe the DNA extraction.

Wolbachia 16S sequence
Arthropod COI sequence
Summary
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