Just logically speaking, I think yes, you get a backup queen or two. I got a 6 queen Veromessor pergandei colony (as an unexpected freebie lol) and months later half have died and I'm down to 3. I've gotten a couple sets of 3- or 4-queen Pogonomyrmex subnitidus and while one set lost 1 queen, the other set lost 1 AND 1 is a dud and might be eating brood.
So the downsides for me have been:
One queen may be either a dud or even less than helpful (she could actually eat brood).
One or more queens (even all) may die if someone made a mistake and it turns out the ants are pleo and not really poly. (Haven't seen this myself, but have heard of it.)
Multiple queens, iirc, don't necessarily multiply the quantity of brood. That is, I don't think it's a strict multiplication of 2 queens = double everything, etc.
It's possible workers may take somewhat less care of multiple queens than they would of a single queen. Though I get the impression they'll tend to take care of the most productive, healthiest queen first.
The risks appear to go down a lot once a colony is established, with a healthy population of workers.
Other than that, yeah, go for poly queens. I would.
Edited by OhNoNotAgain, October 21 2020 - 2:40 PM.
Formiculture Journals::
Veromessor pergandei, andrei; Novomessor cockerelli
Camponotus fragilis; also separate journal: Camponotus sansabeanus (inactive), vicinus, laevigatus/quercicola
Liometopum occidentale; Prenolepis imparis; Myrmecocystus mexicanus (inactive)
Pogonomyrmex subnitidus and californicus (inactive)
Tetramorium sp.
Termites: Zootermopsis angusticollis
Isopods: A. gestroi, granulatum, kluugi, maculatum, vulgare; C. murina; P. hoffmannseggi, P. haasi, P. ornatus; V. parvus
Spoods: Phidippus sp.