منابع مشابه
Evolution: Predator versus Parasite
Both predators and brood parasites can be major threats to the reproduction of many birds. A new study shows that some cuckoo chicks can help deter nest predators, potentially improving host reproductive success when predation risks are high.
متن کاملParasite Exposure Drives Selective Evolution of Constitutive versus Inducible Defense
In the face of infectious disease, organisms evolved a range of defense mechanisms, with a clear distinction between those that are constitutive (always active) and those that are inducible (elicited by parasites). Both defense strategies have evolved from each other, but we lack an understanding of the conditions that favor one strategy over the other. While it is hard to generalize about thei...
متن کاملEvolution of Parasite Virulence
Diseases causedbyparasite or pathogen infections impair normal functioning in organisms. These impairments can include very diverse symptoms leading to the organism’s morbidity and mortality. Studies of the evolution of the virulence of infectious diseases strive to understand the expression of these symptoms as the result of the evolutionary process. This approach is primarily focused on the e...
متن کاملEvolution in predator-prey systems
We study the adaptive dynamics of predator prey systems modeled by a dynamical system in which the characteristics are allowed to evolve by small mutations. When only the prey are allowed to evolve, and the size of the mutational change tends to 0, the system does not exhibit prey coexistence and the parameters of the resident prey type converges to the solution of an ODE. When only the predato...
متن کاملDistributed predator–prey co-evolution
An evolutionary distribution z (x, t) is a distribution of the density of organisms along the values of adaptive traits x at time t. Predator and prey evolutionary distributions with competition, assortative mating and mutations display dynamics that include cyclic waves and other esoteric phenomena. Such phenomena depend on the parameter space, on the instability of the predator–prey dynamics,...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2014
ISSN: 0960-9822
DOI: 10.1016/j.cub.2014.04.016