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

!!HYDEI COMBO PACK!! - Flightless Fruit Fly Culture - LIVE FEEDER INSECTS

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

$70

??PLEASE READ BEFORE PURCHASING??
(WHAT YOU RECEIVE)
-------------------------------------------------------------------------------------
Name: Drosophila hydei (x1 CULTURE)
"Golden" Drosophila hydei (x1 CULTURE)
Sizes: Flies, Larva & Eggs
Count: 50+ Per Culture (will produce prolifically)
Sex: M / F
WITH EXTREME TEMPS THERE WILL ONLY BE
LIVE ARRIVAL GUARANTEE WHEN UPGRADE TO
EXPRESS MAIL OR IN TEMPS BETWEEN 0 - 85F
(CULTURE ... more

Fruit Fly Culture Flightless 1 and 2 EMPTY Lizard And Dart Frog Food Live

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

$30

Live fruit flies are a great option for feeding small lizards and many species of frogs, especially because of their reproduction cycle. Each culture of flightless fruit flies has a lifespan of about one month, and even after they die, they will continually pupate from eggs laid by the adults in the culture! This will allow you to keep fruit flies for a while, as long as they are taken care of accurately. Then make your own by adding a few into the empty cultures the wait a week ... more

Fruit Fly Culture

Flintstone, Maryland, 215**, UNITED STATES OF AMERICA

$14

Our melanogaster flightless fruit fly cultures arrive well started with adult flies that will produce larvae within a few days. To care for the culture, simply keep it around 75 degrees, and do not feed off the flies until new flies have emerged. The culture will produce flies for up to 2-3 weeks.
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"Golden" Drosophila Hydei (Flightless Fruit Fly Culture) - LIVE FEEDER INSECTS

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

$40

??PLEASE READ BEFORE PURCHASING??
(WHAT YOU RECEIVE)
-------------------------------------------------------------------------------------
Name: "Golden" Drosophila hydei Fruit Flies
Sizes: Flies, Larva & Eggs
Count: 50+ (will produce prolifically)
Sex: M / F
WITH EXTREME TEMPS THERE WILL ONLY BE
LIVE ARRIVAL GUARANTEE WHEN UPGRADE TO
PRIORITY MAIL OR IN TEMPS BETWEEN 0 - 85F
COOL PACKS WILL BE ADDED IF NEEDED
(CULTURE ... more

Flightless Fruit Fly Culture (Drosophila Hydei) Reptile Food

San Juan, Puerto Rico, 009**, UNITED STATES OF AMERICA

$26

Flightless Fruit Fly Culture (Drosophila Hydei) Reptile Food
LIVE ARRIVAL GUARANTEED!
If you experience any issues, contact us within 1 hour of delivery and include photos of any DOA
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No need! We offer affordable shipping on qualifying orders, and most orders are eligible for our live arrival guarantee. Plus, we include a 10% overcount to compensate for any insects that may be injured during transit
Live... more