2018:groups:g4:start
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===== Introduction ===== | ===== Introduction ===== | ||
- | Herbivory is known to cause several different responses in plants, from morphological to biochemical mechanisms, which constitute complex defense mechanisms against herbivore attacks. The biochemical mechanisms against herbivores are usually complex and dynamic, and are constituent of both direct and indirect defenses. In a recent work (Orrock et al, 2017), the authors report experiments of induced defense mechanisms against herbivores in tomato plants (//Solanum lycopersicum// | ||
- | {{: | + | {{: |
- | ===== Extension ===== | + | Herbivory is known to cause several different responses in plants, from morphological to biochemical mechanisms, as defenses against herbivore attacks. The biochemical mechanisms against herbivores are usually complex and dynamic, and can be both direct and indirect. In a recent work (Orrock et al, 2017), the authors report experiments of induced defense mechanisms against herbivores in tomato plants (//Solanum lycopersicum// |
- | Induced cannibalism among herbivores may be beneficial to the plant in two ways: (i) herbivores eat less plant biomass (by a possible alteration on palatability or leaf quality for the caterpillars), | ||
- | ===== Extension ===== | + | {{ : |
+ | Induced cannibalism among herbivores may be beneficial to the plant in two ways: (i) herbivores eat less plant biomass (possibly by an alteration on palatability or leaf quality for the caterpillars), | ||
- | How would the infection by horizontally-transmitted pathogens on the caterpillar population be altered with the induction of cannibalism? | + | ===== Assignment ===== |
+ | Build a hypothetical field scenario for this plant-herbivore interaction, | ||
+ | |||
+ | ===== Questions and challenges ===== | ||
+ | |||
+ | * Are there different approaches to introduce (i) and (ii) into population dynamics? | ||
+ | * How the relative strength of these two effects may influence population balance? | ||
+ | === Challenge === | ||
+ | How would the infection by horizontally-transmitted pathogens on the caterpillar population be altered with the induction of cannibalism? | ||
===== Reference ===== | ===== Reference ===== | ||
**Induced defences in plants reduce herbivory by increasing cannibalism** | **Induced defences in plants reduce herbivory by increasing cannibalism** | ||
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Orrock, J., Connolly, B. and Kitchen, A.. //Nature ecology & evolution// 1, no. 8 (2017): 1205. | Orrock, J., Connolly, B. and Kitchen, A.. //Nature ecology & evolution// 1, no. 8 (2017): 1205. | ||
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2018/groups/g4/start.1513869892.txt.gz · Last modified: 2024/01/09 18:45 (external edit)