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21 Cards in this Set
- Front
- Back
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During which stage of the insect life cycle does growth take place in a complete and incomplete metamorphosis? |
In a complete metamorphosis growth takes place in the larval stages and in an incomplete metamorphosis growth takes place in the Nymphal stages. |
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Name five different types of insects which undergo complete metamorphosis |
Fruit fly, Clothes Moth, Human Flea, Thrip, Larder Beetle |
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Name three problems that can arise from poor sighting of an electronic fly killer. |
Competition with natural light sources. Positioned to high can make it difficult to service. Can attract flies over unprotected food. |
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How does diatomaceous earth kill insects? |
Interferes with water absorption through physical disruption of the cuticle |
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Why does diatomaceous earth not need approval under the control of pesticides act 1986? |
Because it is a natural product and is not toxic and is used as a physical means. |
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Why are German Cockroaches more likely to be attracted to a trap already containing cockroaches than an empty one? |
The aggregation of pheromones attract other Cockroaches. |
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Name two insecticides designed to be used in cockroach baits. |
Fiprinol Imidacloprid |
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Some insect infestations can be detected by the presence of cast moults. What is a cast moult? |
Its the old exoskeleton of insect typically shed to allow growth to take place |
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Why is the absence of cast moults not a reliable indicator for the lack of cockroaches? |
They can be eaten by other cockroaches and or easily moved during cleaning. |
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Explain why an insecticide smoke generator is less effective than a fumigant. |
Gas penetrates all areas and smoke dust only lands on surfaces. |
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Name five formulations of insecticide. |
Gels, Lacquers, Emulsions, powders, aerosols. |
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List three features in a commercial kitchen where German cockroaches are likely to be found. |
Inside hotplates, Fridge motors, around hot pipes. |
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List two features in a commercial kitchen where Oriental cockroaches are more likely to be found than the German cockroaches. |
Kitchen drains, under floor tiles, inside dishwashers. |
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To which groups of insecticides do the following belong? Pirimiphos-methyl, Bendiocarb, Permethrin. |
Pirimiphos-methyl = Organophosphorus compound. Bendiocarb = Carbamate Permethrin = Pyrethroid |
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Name three insect growth regulators. |
Methoprene, Cyromazine, Piripoxyfen |
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Manufacturers provide bait stations for gel baits. State one advantage and one disadvantage of using bait stations. |
One advantage is it gives the bait a good residual life span and the disadvantage is it has a competition with other food sources. |
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What does the term Diptera mean? |
Two wings |
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What does the term arthropod mean? |
Jointed legs |
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In normal conditions how long do the ootheca take to hatch in German cockroaches |
Within a few hours of being dropped. |
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In normal conditions how long do the ootheca of Oriental cockroaches take to hatch? |
6-12 weeks |
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Explain the term domino or cascade effect when talking about pesticides. |
When an insect has ingested another insect that has been killed by another insect. |
