Moreover, without apex predators to remove old and weak prey, diseases become epidemics and ecosystems collapse - quickly.
Therefore, according to a deterministic predator-prey model, this paper investigates the stationary distribution and ergodic property of a stochastic infected predator-prey with Beddington-DeAngelis and explores the influence of white noise on the persistence in mean and extinction of the predator-prey-disease system.
Weakened populations fell prey to disease and pestilence, themselves worsened by environmental and living conditions.
In captivity, they reach sexual maturity too quickly, fall prey to disease and, to top it off, tend to eat one another.
In Hinduism, if a Brahmin (a member of the highest caste) enters a street of the untouchables (outcastes), he is polluted, but the whole street also falls prey to disease, famine, and sterility.
But they have been more reluctant to dwell on the high number of newly emancipated slaves that fell prey to disease, dismissing earlier accounts as propaganda generated by racist 19th-century doctors and early-20th-century scholars bent on arguing that blacks were biologically inferior and unsuited to full political rights.
To be born is to be vulnerable, to fall prey to disease and suffering, and ultimately to die.
Documenting each of Gorongosa's lions is part of a larger effort to understand how factors like prey, genetics, disease, illegal bushmeat hunting, and park boundaries are impacting the population.
Chronically inadequate diets leave children easy prey to disease and diarrhoea.
Feeding and treatment centres Without enough food to go around, the weakest children easily fall prey to disease.
UNICEF said that unless immediate national priority is put on protecting children from these threats, thousands of Iraqi youngsters will die unnecessarily – and hundreds of thousands more will be injured, fall prey to disease, suffer from abuse and exploitation, or fall behind in school.
