Hello Schnaggli (are you I suppose?), I see sometimes Rumina decollata (native here) feeding at night within the large-mouthed shells of some Cantareus apertus or Cornu aspersus, so I suppose they would prefer large access ways to their "food". Yet it would be worthwhile to try... do you intend to use them as a population control for Achatina ?
-I know there are some species, -sadly I never saw any as available since now-, as Gonaxis sp., smaller, roundish snails that prey Achatina (even adult ones) in the wild.
Euglandina would do, too, yet it is not easy at all to rear and breed, as I learnt from experienced peoples.
Gonaxis would be their "true" natural enemies, and perhaps easier to rear and breed, provided some Achatina is available.
Hopefully, someone would breed and introduce them -making before all an interesting addition to reared species range, too...
I am considering various options to put unwanted eggs/hatchlings to good use, before I start breeding my mutant fulica. And since my Rumina would benefit of a carnivorous diet, if it worked it could be a win-win scenario.
Another option would be feeding the eggs to some of my local carnivorous snails, such as Oxychilus.
Yes I believe Oxychilus would be surely good feeders upon them, as they are "carnivorous" even to a higher degree than Rumina, it seems... -Othrwise, some slugs could "help" you, as Arion sp., or others even in Limacidae, although I couldn't tell what is the most "voracious" one...
Zonitoides arboreus is found in parts of California, but not in my part (San Francisco Bay Area), according to Roth's Checklist of the Land Snails and Slugs of California, second edition. They are indeed very similar to garlic snails.
Very similar indeed, and the respective families are quite strictly related, although "distinct".
Gastrodontidae have a non-calcareous love dart, as a main difference. Here in Italy I am not sure Z. arboreus do live (perhaps accidental in some greenhouses), yet I found here outside -almost identical- Zonitoides nitidus; next time I'll find some, I'll try snail eggs (provided I get some in the meanwhile!)
I brought home a few Oxychilus specimens the other night and put them in a small terrarium of their own. I left a few aspersa hatchlings in the same terrarium, but so far the Oxychilus haven't shown any predatory behaviour towards them and have fed on non-live food instead. I'll keep an eye on them...
Last Edit: Sept 25, 2010 10:19:38 GMT by Schnäggli