1-KV

Sample information

Picture
Entry by: Kamryn_V
Location
Collection date 02/15/2026
Captive / Cultivated? Wild-caught
Group Berkshire Community College
Observations

Captured inside of home after specimen had entered through opening in window during winter. Likely seeking warmth and food source. Killed the specimen before collection.

Putative identification Arthropoda Insecta Diptera Muscidae Musca Musca domestica

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

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 53 minutes in a hot water bath at 56 degrees C. The written protocol was followed closely.

Our first PCR reaction was set up on 10 March 2026, and was a duplex reaction because we used both the Arthropod CO1 and Wolbachia 16S primers together. We used an annealing temperature of 49 degrees celcius and Taq polymerase – New England Biolabs OneTaq Hot Start Quick-Load 2X Master Mix with Standard Buffer (#M0488S).

Our first gel image was taken on 3-24-2026 and was run at 120V for 25 minutes using the New England Biolabs 1 kb Plus DNA Ladder for Safe Stains (product # N0559S).

Results

Wolbachia presence Yes
Confidence level High
Explanation of confidence level

Confidence is high because the results of the positive (+A) and negative (-A) arthropod controls were as expected, as well as the DNA control results. This shows that PCR was successful and that contamination of the samples did not take place.

Wolbachia 16S sequence
Arthropod COI sequence
Summary The Musca domestica was found to be postive for Wolbachia.
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