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Cooperative predation on mutualistic prey communities.

07:00 EST 11th January 2020 | BioPortfolio

Summary of "Cooperative predation on mutualistic prey communities."

Positive interactions are quite common in nature but are less studied. While positive association among species has been studied in ecological literature, how such interactions will impact the ecological dynamics when they occur within antagonist communities is not understood. Motivated by this, we studied a community module consisting of two prey species and a predator population where the prey species are in mutualistic relationship while the predators exhibit hunting cooperation. Our result reconfirms that both mutualism and hunting cooperation destabilizes the system. Predator cooperation may result in extinction of the relatively more attacked prey and a minimal mutualism strength is required in order to retain the coexistence equilibrium. A higher degree of cooperation among predators can lead to bistable dynamics which increases the survival chance of the otherwise extinct prey. Mutualistic association further enhances this effect thereby increasing the chance of coexistence. Generally, cooperative hunting is known to produce bistability but this system also demonstrated tristable dynamics. Moreover, the wide range of multi-stability exhibited by our model indicate the high sensitivity of the system to small perturbations. Overall, our study suggests that the interplay between the prey mutualism and predator cooperation may result in unintuitive dynamics which might be important in the context of community ecology.

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This article was published in the following journal.

Name: Journal of theoretical biology
ISSN: 1095-8541
Pages: 110156

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