نتایج جستجو برای: host selection
تعداد نتایج: 523257 فیلتر نتایج به سال:
For over 25 years, many evolutionary ecologists have believed that sexual reproduction occurs because it allows hosts to change genotypes each generation and thereby evade their coevolving parasites. However, recent influential theoretical analyses suggest that, though parasites can select for sex under some conditions, they often select against it. These models assume that encounters between h...
The coevolution of interacting species can lead to codependent mutualists. Little is known about the effect of selection on partners within verses apart from the association. Here, we determined the effect of selection on bacteria (Xenorhabdus nematophila) both within and apart from its mutualistic partner (a nematode, Steinernema carpocapsae). In nature, the two species cooperatively infect an...
It has been recently realized that parasite virulence (the harm caused by parasites to their hosts) can be an adap-tive trait. Selection for a particular level of virulence can happen either at at the level of between-host tradeoos or as a result of shortsighted within-host competition. This paper describes some simulations which study the eeect that mod-iier genes for changes in mutation rate ...
Host plant selection ofChrysolina clathrata(Coleoptera: Chrysomelidae) from Mpumalanga, South Africa
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