Defence and counter defence

Wolbachia infection suppresses both host defence and parasitoid counter-defence.

Endosymbiotic bacteria in the genus Wolbachia have been linked to several types of reproductive parasitism, which enhance their own transmission, while their direct effects on the host vary from beneficial to neutral or detrimental. Here, we report negative effects of infection on immunity-related traits of Drosophila simulans and the parasitoid wasp Leptopilina heterotoma. Infected D. simulans...

Counter Argument In Defence of Common Sense

Cooperation & Conflict in Transatlantic Defence and Security Structure

The both Atlantic side relations from the ancient time had been faced with too much challenge but the continuing of this relation is due to the common political and economical interests. The upper Atlantic and the two organizations (NATO, EU) still exist to gain the essential goals and the political and security connection which are boosting with the economical integration at the same time. But...

Evolutionarily stable defence and signalling of that defence.

We examine the evolution and maintenance of defence and conspicuousness in prey species using a game theoretic model. In contrast to previous works, predators can raise as well as lower their attack probabilities as a consequence of encountering moderately defended prey. Our model predicts four distinct possibilities for evolutionarily stable strategies (ESSs) featuring maximum crypsis. Namely ...

Medical Defence