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20 Cards in this Set
- Front
- Back
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Define Vector |
insect carries/transmits a disease or parasite from one animal/plant to another |
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How is vectoring associated with woodborers |
MPB vectors blue stain fungus Cerambycids vector the pinewood nematode |
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One genus from the family Buprestidae? |
Melanophilia |
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What is a function of Melanophilia's body? how does it aid in its survival? |
They have infrared sections on their body which detect heat (from firews) They use this to find areas which are newly distressed/dead to lay eggs |
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Difference between Buprestidae and Cerambycidae? |
Buprestidae = metallic, no antennae Cerambycidae = grey/dull, long ass antennae **They look the same when they are larva - cream, chewing mouth, segmented, no legs** |
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species/genus of Cerambycidae? |
Monochamus oregonensis |
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3 obvious symptoms of Ambrosia beetles (Scolytidae) |
fungus stain around pinholes white boring dust size of the hole |
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genus/species of Scolytidae? |
Gnathotrichus sulcatus Trypodendron lineatum |
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What is special about ambrosia beetles? |
They have a symbiotic relationship with fungi which they carry on their bodies and provides the only food source for them |
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What is mycangia? |
the special structure on ambrosia beetles bodies which carries the fungus |
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What are 2 problems ambrosia beetles face? |
trees selected for attack must be able to support the growth of the symbiotic fungi beetles must grow fast enough to consume their food before it consumes them |
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MAnagement technique for ambrosia beetles? |
kiln dry mist to completely wet all surfaces semiochemical traps |
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advantages of misting in dryland sort? |
insects dont like wet reduces chance of sun checking reduces chance of fire keeps dust down |
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disadvantages of misting in a dryland sort? |
need a large water source machines can damage sprinklers expensive |
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how can semiochemicals be used to reduce losses? |
deter insects from an area attract insects to traps |
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characteristics of trap logs? |
- pheromone baited - winter felled - have bark - large diameter - bundled and strapped to ensure their moist and protected |
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When do semiochemicals play a role in the ambrosia beetle life cycle? |
when they emerge from dormancy in search of a host after brood beetles mature and parents want to find another log |
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Differences between Gnathotrichus and Trypodendron? |
Trypodendron: overwinter in organic duff layer; prefer to attack aged logs Gnathotrichus: overwinter inside log; will attack any age log even green timber |
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How to reduce losses from Ambrosia beetles? |
- seasonal time of felling - stacking timber provides protection to inner log - kiln drying - insecticides/fumigants - watering/sprinklers |
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What are 2 chemicals used in the semiochemical traps for ambrosia beetles? |
Sulacatol (host tree lures) Lineatin (specific beetle pheromone) |
