plasma is basically controlled, concentrated electricity, and a yautjas shoulder cannon shoots plasma, so i would expect a xenomorph to get hurt depending on how much they take, i'm sure they would be able to resist and absorb the electricity if it was a smaller amount and not as concentrated as that of a plasma caster.
~i draw things...it is delicious~
~first female on teh site! w00t w00t!~
I ARE A XENOMORPH! MOOF