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Sample questions
In terms of professional recommendation and risk, how is the fruit fly categorized?
- Professional recommended: high; Risk level: high.
- Professional recommended: contextual; Risk level: low.
- Professional recommended: rarely; Risk level: nuisance.
- Professional recommended: sanitation; Risk level: low.
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Professional Recommended: rarely; sanitation usually resolves it... Risk Level: low... Treatment Recommended: contextual.🔗 Source
Which environmental conditions are associated with the cessation of egg-laying in fruit flies?
- Temperatures below 54°F or above approximately 91°F.
- Temperatures below 40°F or above 100°F.
- Temperatures below 60°F or above 85°F.
- Temperatures below 50°F or above 95°F.
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UC IPM notes egg-laying stops below about 54°F and above about 91°F, with development best in the low 80s°F.🔗 Source
How does the Spotted Wing Drosophila (*Drosophila suzukii*) differ from other vinegar flies in its egg-laying habits?
- It lays eggs only in fermenting residue in drains.
- Its larvae feed on the skins of unripe fruit only.
- Its females lay eggs in ripe, undamaged fruit rather than only in rotting material.
- It does not produce larvae; it reproduces via parthenogenesis.
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Unlike its relatives, its females lay eggs in ripe, undamaged fruit rather than only in rotting material.🔗 Source
Which of the following describes the larval stage of the fruit fly?
- Small, dark-colored organisms with a forked tail.
- Pale, whitish maggots with a dark mouthpart at the head and a small forked breathing tube at the tail.
- Brownish, tiny organisms that feed on undamaged fruit.
- Dark-colored organisms that feed on the water film in drains.
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The larvae are pale, whitish maggots with a small forked breathing tube at the tail and dark mouthparts at the head, found in or beside the spoiling fruit they grew up in.🔗 Source
When inspecting for an active fruit fly infestation, what is the most reliable way to confirm a breeding source is present?
- Observing adults in erratic, hovering flight near trash.
- Finding pale maggots in or on soft, damaged, or fermenting fruit.
- Seeing a sudden indoor swarm of flies near a kitchen counter.
- Noting the presence of flies in a clean-looking drain.
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Pale maggots in or on soft, damaged, or fermenting fruit confirm an active breeding source rather than a stray adult passing through.🔗 Source
According to UC IPM data, how does the lifespan and egg output of the strawberry vinegar fly change in cooler temperatures?
- Lifespan shortens and egg output increases.
- Lifespan lengthens to 20 to 30 days and egg output decreases.
- Lifespan remains 7 to 8 days but egg output increases to 800.
- Egg-to-adult development slows, but egg output remains at 500.
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UC IPM's strawberry vinegar fly data puts egg output higher at 700 to 800 over a lifespan of about 7 to 8 days in summer, lengthening to 20 to 30 days when cooler.🔗 Source
According to the provided text, what is the primary recommended method for controlling a fruit fly problem?
- The use of pyrethrins to knock down adult populations.
- The application of traps to lower fly numbers.
- Sanitation and the removal of the breeding source.
- Frequent use of insecticides to suppress abundance.
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The fix is almost always sanitation, not spray... a pest usually managed by cleaning out the breeding material, not by chemicals.🔗 Source
Which of the following is a key morphological difference between vinegar flies (Family Drosophilidae) and true fruit flies (Family Tephritidae)?
- Vinegar flies have red eyes, while true fruit flies have black eyes.
- True fruit flies have larvae that feed inside undamaged fruit and are larger, near 1/4 inch.
- Vinegar flies are larger, measuring up to 1/4 inch in length.
- True fruit flies only breed in drains, while vinegar flies breed in fruit.
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UC IPM gives a distinction that vinegar flies mostly leave sound fruit alone, while true fruit flies have larvae that feed inside undamaged fruit and run larger, near 1/4 inch (6 mm) versus 2 to 3 mm.🔗 Source
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