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= the beneficial effect of the density of species j on species i. Mutualism is in essence the logistic growth equation modified for mutualistic interaction. The mutualistic interaction term represents the increase in population growth of one species as a result of the presence of greater numbers of another species.
Close and long-term interactions are described as symbiosis; [a] symbioses that are mutually beneficial are called mutualistic. [2] [3] [4] The term symbiosis was subject to a century-long debate about whether it should specifically denote mutualism, as in lichens or in parasites that benefit themselves. [5]
In game theory, a win–win game or win–win [1] scenario is a situation that produces a mutually beneficial outcome for two or more parties. [2] It is also called a positive-sum game as it is the opposite of a zero-sum game.
This is also called mutually beneficial cooperation as both actor and recipient depend on direct fitness benefits, which are broken down into two different types: by-product benefit and enforcement. By-product benefit arises as a consequence of social partners having a shared interest in cooperation.
It is putatively mutually beneficial, but biologists have long debated whether it is mutual selfishness, or simply exploitative. Cleaning symbiosis is well known among marine fish, where some small species of cleaner fish – notably wrasses , but also species in other genera – are specialized to feed almost exclusively by cleaning larger ...
There are many explanations in place that justify the evolution of mutually beneficial interactions. Most importantly, in order for the production of public goods to be evolutionarily beneficial, the behaviour must provide a direct benefit to the reproductive performance of the actor that outweighs the cost of performing the behaviour. [5]
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Cleaning symbiosis is a mutually beneficial association between individuals of two species, where one (the cleaner) removes and eats parasites and other materials from the surface of the other (the client).