Exploiters pt 5

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  • Created by: Tabitha
  • Created on: 20-03-15 20:55
How many nematodes per 100cm3 of grassland soil?
Above 2000
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What are entomopathogenic nematodes?
Those that are parasitic on insects
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Use of Entomopathogenic nematodes?
Mass produced and sold as pest control
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Example in which insect the nemotodes have multiplied in in the practical
Galleria Mellonella (wax moth larvae)
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How do Entomopathogenic nematodes use the larvae?
Associated with bacteria held in its mouthparts (acting as vector), bacteria kills host larvae and then nematodes feed/multiply on insect cadavar
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What determines the type of nematode?
The mouth pats
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Benefits of parasitic pest control
Unlikely to become resistant as they are natural emenies and unharmful to environment
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Define Parasitoids
Uses and kills host in the end
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Percentage of Hymenoptera that are parasitoids?
about 50%
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2 example of insect parasitoids
Cotesia glomerata (butterfly larvae) and Aphelinus Abdomnalis (Aphid)
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Information on Cotesia Glomerata - A biocontrol
Same order as honey bees, search out caterpillers, lay eggs inside the larvae which develop inside without killing it, until they emerge fully grown
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Information about the Mosquito (Latin, order, body structure)
Culicidae, Order Diptera, 1 pair of wings, blood through Labium, compound eye
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Information about the Flea (Latin, Order, body structure)
Pulex irritans, Order Siphonaptera, similar to Mosquito, blood through labium, have lateral ocellus
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How many parasitic plants are there?
About 4000 from 20 families
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Define Holo or Hemi parasite?
Holo - No chlorophyll, completely parasitic, Hemi - Some degree photosynthetic
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Obligate or Facultative parasite?
Obligate - can't complete life cycle without host, Facultative, host independent but prefered
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Stem or Root Parasite?
Attach to stem or Root
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Whats a haustorium?
Modified root that penetrates host
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3 examples of parasite plants
Dodder Root parasite (Cuscuta Eurpeae), Rafflesia Arnoldii Holoparasite,Mistletoe (Viscum album) Stem hemi parasite
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Example and Explanation of key species
Mistletoe (Viscum album) - a group whose impact on ecosystem is dis-proportionally large compared to its abundance
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Percentage of flowering plants that are parasitic?
1%
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Other cards in this set

Card 2

Front

What are entomopathogenic nematodes?

Back

Those that are parasitic on insects

Card 3

Front

Use of Entomopathogenic nematodes?

Back

Preview of the front of card 3

Card 4

Front

Example in which insect the nemotodes have multiplied in in the practical

Back

Preview of the front of card 4

Card 5

Front

How do Entomopathogenic nematodes use the larvae?

Back

Preview of the front of card 5
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