Derald wrote:
Frank wrote:

Don't know what's going on with the wasp they were looking at for control:

http://www.delawareonline.com/VideoN...ill-stink-bugs

Nor do I but it begs the question: "What happens when the wasps
run out of stink bugs?".

it is rare that a biological control will reach 100%.
so they are unlikely to get them all, instead it just
helps to moderate the damage to acceptable levels.


Unless the wasps feed exclusively on the stink
bugs, other species may be put at risk either by becoming a food source
or by being displaced in the hunt for food in much the same manner that
imported honeybees displace native bees when they're allowed to
"naturalize" in the wild. I am not averse to "natural" controls and use
them myself in my own garden (Bt, "carnivorous" nematodes, and "nolo")
but they all require thorough investigation in order to avoid or, at
least, to minimize the chances of unintended consequences.

yes, i consider it a rare event that if a bug feeds
on other bugs that it only feeds on one.

i think the broader question is to look at what
happens over time. like it has been mentioned (in
the wiki page i think it was) that there seems to be
some adaptation and feeding by local bugovores to
reduce the population.

if what we have is them about then i'm not seeing
the supposed damage they can cause. and we do have
plenty of them about in the fall and spring based upon
how many i find indoors. as i never actually find
them on plants i can't say what they might be feeding
upon.


songbird