Fruit flies part 6: Troubleshooting common problems

A home-made fly trap thats very effective

Media consistancy problems

When preparing food for the flies, it is easy to make it too hard or too soft. This is an advantage of the Sussex media mentioned in Fruit fly food which is right every time. Too wet media can be countered by inserting twisted or screwed kitchen roll or newspaper - both absorbing some moisture and creating walkways for the flies. This can be done in any case, and can increase fly yields if there is often a shortage of pupation sites.

Mold

Mold is scarcely a problem if mold inhibitors are used, but also moldy cultures are usually lightly populated. The flies (and larvae) prevent mold when present in great enough numbers. Using narrow vials with a small surface area certainly helps. When reusing old vials ensure they are cleaned efficiently - failure to do so will also increase the likelihood of mold. A soak in weak bleach can help, but make sure they are rinsed thoroughly afterwards.

Mites

Can destroy a culture. Some merely feed on the media with the flies, but some are parasitic or egg eating. Mites can be treated with Benzyl benzoate soaked bungs, but it is probably easier to discard all cultures and get clean fly stocks. Mite prevention is probably more appropriate, and flies should be housed away from possible contamination, such as in a larger closeable cabinet.

Flightless flies starting to fly

This does happen. Flies can breed with wild flies through thin vial tops (netting for example), or mix with them during handling. Where possible use foam bungs, and try to keep your flies in a closed space away from potential contamination. Once this happens, you really need to replace your stocks and start again.

Fly explosions

Yes they will get out. I use a vinegar trap; vial of vinegar with a perforated tin foil lid. The flies head straight for it.

Fruit fly cultures for sale

Fruit Fly Culture 3Pack Variety Live Flightless, Turkish Gliders, & Golden Hydei

Dover, Pennsylvania, 173**, UNITED STATES OF AMERICA

$25

Introducing a pack of four fruit fly cultures, specially designed for reptile supplies. These live cultures are brought to you by Crazy Frog Lady L L.C. and are perfect for feeding your pets. You will receive a variety of Turkish Gliders, Golden Hydei, and Flightless fruit flies in this pack.
The high-quality brand ensures that your pets get the best nutrition. These cultures are suitable for pet owners looking for fresh and healthy food for their reptiles. So, if you are looking for a new ... more

Wood Wool Gift Filler 8 Oz (0 5 Lbs) Crafts, Packing Fragile, Fruit Flies Medium

Rohnert Park, California, 949**, UNITED STATES OF AMERICA

$4

This product is perfect for those who love to create unique and handcrafted items. The pack contains 8 oz of Wood Wool Excelsior, which is perfect for packing fragile items or even as a decorative material. The product is made from high-quality materials and is designed to provide maximum comfort and protection for your reptile pets.
With its exceptional quality and versatility, this product is a must-have for all crafting enthusiasts. It is ideal for creating various items, from fruit flies... more

"Turkish Glider" Melanogaster (Fruit Fly Culture) - LIVE FEEDER INSECT DART FROG

Cleveland, Georgia, 305**, UNITED STATES OF AMERICA

$40

??PLEASE READ BEFORE PURCHASING??
- IN EXTREME TEMPS LIVE ARRIVAL GUARANTEE
WILL ONLY BE IN EFFECT WHEN UPGRADED TO
PRIORITY MAIL OR IN TEMPS BETWEEN 0 - 85F
- COOL PACKS WILL BE ADDED IF NEEDED
(I CHECK TEMPS BEFORE SHIPMENT)
- UPGRADED PRIORITY SHIPPING IS RECOMMENDED
FOR THE SAFEST ARRIVAL
(WHAT YOU RECEIVE)
---------------------------------------------------------------
Name: "Turkish Glider" Melanogaster Fruit Fly
Size: 1 / ... more

Fruit Fly Culture (Large Fruit Fly: D. hydei) - 32oz

Shullsburg, Wisconsin, 535**, UNITED STATES OF AMERICA

$10

Looking for a reliable and nutritious feeder insect for your dart frogs, fish, mantids, or juvenile reptiles? Our D. hydei Fruit Fly Cultures are the perfect solution! These small, flightless fruit flies can be easily produced at home offering a continuous supply for 30-50 days!
Product Features:
Species: Drosophila Hydei (D. hydei) Fruit FliesPerfect for: Dart frogs, fish, mantids, juvenile reptiles, and other insectivoresCulture Lifespan: Each culture typically produces fruit flies for ... more

Biology Genetics Drosophila Fruit Fly Spoonflower Fabric by the Yard

Durham, NC, UNITED STATES OF AMERICA

$22

... more