Evolution: Parasite Pressure Favors Fortress-like Defence
نویسنده
چکیده
Why are some defence mechanisms expressed constitutively, while others are induced only upon exposure? Experimental evolution in a bacteria-phage system provides empirical support for the prediction that high frequency of exposure to parasites selects for constitutive defence despite associated costs.
منابع مشابه
Collective defence portfolios of ant hosts shift with social parasite pressure.
Host defences become increasingly costly as parasites breach successive lines of defence. Because selection favours hosts that successfully resist parasitism at the lowest possible cost, escalating coevolutionary arms races are likely to drive host defence portfolios towards ever more expensive strategies. We investigated the interplay between host defence portfolios and social parasite pressur...
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ورودعنوان ژورنال:
- Current Biology
دوره 25 شماره
صفحات -
تاریخ انتشار 2015