frass expulsion

Grkovich, Alex agrkovich at tmpeng.com
Mon Aug 6 14:39:52 EDT 2001


Eating fresh garlic before going out also keeps the bugs away for awhile.
Keeps a lot of things away as well.

> -----Original Message-----
> From:	Bill Cornelius [SMTP:billcor at mail.mcn.org]
> Sent:	Monday, August 06, 2001 2:12 PM
> To:	leps-l at lists.yale.edu
> Subject:	Re: frass expulsion
> 
> Maybe larvae grow bacteria in their gut & the early instars don't have the
> right kind yet? sounds sort of lame, how'bout parasites locate early
> larvae by
> the vitamin B content of their poop? I know ticks & fleas don't bite me if
> I've eaten Vit B. Somebody else do the test.
> 
> Bill
> 
> Liz Day wrote:
> 
> > >As for the projectile frass thing, could it be that the caterpillars
> > >simply want to get the frass of the leaves they're on? Big
> caterpillars
> > >would have no problem with this as their frass is heavy and drops
> > >easily, where as small caterpillars' frass does not.
> >
> > It could be. It seems the few kinds of larvae I've watched, they
> either
> > shoot the frass or they don't, from the time they're tiny until they're
> > large. As we talk about this, and the advantages of making sure your
> > frass doesn't fall to rest on a nearby leaf, I'm wondering why ALL
> larvae
> > don't shoot it out. Saturniids just let it fall. Even if you are
> > hanging on the underside of a leaf, it might come to rest on the leaf
> below
> > you. And they have plenty of parasitoids. Mysterious.
> >
> > Liz
> >
> > -------------------------------------------------------------
> > Liz Day
> > Indianapolis, Indiana, central USA (40 N, ~86 W)
> > Home of budgerigar Tweeter and the beautiful pink inchworm (Eupithecia
> > miserulata).
> > USDA zone 5b. Winters ~20F, summers ~85F. Formerly temperate deciduous
> > forest.
> > daylight at kiva.net
> > www.kiva.net/~daylight
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