2020:groups:g8:start
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===== Introduction ===== | ===== Introduction ===== | ||
- | Ants and plants | + | Many ants and plants |
{{: | {{: | ||
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The two strategies are: | The two strategies are: | ||
- | i) The typical strategy of foraging on leaves, actively searching for herbivores. | + | i) The typical strategy of foraging on leaves, stems and trunk, actively searching for herbivores. |
{{: | {{: | ||
- | ii)The innovative strategy of using galleries for prey capture: the hollow porous tubes are filled with ants ready to ambush. Unsuspecting insects land on the trap and quickly become overwhelmed by the voracious invertebrates. Also the fungus improves nutrient uptake by the host plant. | + | ii) The innovative strategy of using galleries for prey capture: the ants cut plant ' |
- | However, because of a limited worker force in their colonies, the prey capture behaviour of the ants results in a trade-off between | + | However, because of a limited worker force in their colonies, the prey capture behaviour of the ants results in a trade-off between the strategies of patrolling |
- | The quantification | + | Less investment in the galleries (i.e. in fungal cultivation) translated into more benefits for the plant in terms of less herbivory |
- | Less investment in the galleries (i.e. in fungal cultivation) translated into more benefits for the plant in terms of less herbivory and higher growth rates and vice-versa. However, the greater vegetative growth of the plants did not produce a positive fitness effect for the better mutualistic ant species in terms of colony size and production of sexuals nor was the mutualism compensated by the wider dispersal of its queens. | + | In a nutshell: this tripartite relationship is fascinating! The plants receive nutrients and protection from the ants, while the ants get a place to live. The ants help to disperse and propagate the fungus, while the fungus helps hold the trapping structure together. The fungus also gets a place to live provided by the plants, and in turn, efficiently transfers nutrients from ant waste into the plant. |
- | + | ||
- | In a nutshell: this tripartite relationship is fascinating! The plants receive nutrients and protection from the ants, while the ants get a place to live. The ants help disperse and propagate the fungus, while the fungus helps hold the trapping structure together. The fungus also gets a place to live provided by the plants, and in turn, efficiently transfers nutrients from ant waste into the plant. | + | |
===== Assignment ===== | ===== Assignment ===== | ||
- | Write a model to investigate mutualistic investment, its potential trade-offs and their consequences for the longevity | + | Propose |
- | ===== Questions & Suggestions | + | ===== Suggested questions |
- | 1) A possible consequence of competing strategies is exclusion of the worse strategy. Although the better ant mutualism is the one that provides more benefits to its host plant, its lower host–plant exploitation does not give this ant species a competitive advantage. Can your model support local coexistence of the two ant species? | + | - Is the coexistence of the two ant species |
+ | - Will the scenario proposed by Orivel //et al.// lead to competitive | ||
+ | - Is there an optimal proportion | ||
- | 2) Can your model help elucidate | + | Further well-grounded questions from the group are welcome. |
===== References ===== | ===== References ===== | ||
- | Orivel | + | Jérôme |
- | Leroy, C., Séjalon‐Delmas, | + | Leroy, C., Séjalon‐Delmas, |
- | Dejean, Alain; Solano, Pascal J., Ayroles, Julien; Corbara, Bruno and Orivel, Jérôme | + | Dejean, Alain; Solano, Pascal J., Ayroles, Julien; Corbara, Bruno and Orivel, Jérôme |
2020/groups/g8/start.txt · Last modified: 2024/01/09 18:45 by 127.0.0.1