by damiensharjah » Sat Jun 08, 2013 7:11 am
Hey there.
You should make you little lygo welcome.
On the subject of house geckos becoming invasive though, it's quite rare as wherever they 'invade', they generally take up occupancy in urban settings and are rarely found in natural areas. The genus Hemidactylus, is massively widespread worldwide, well outside of many species' natural range, but seldom come up as a threat to native species.
In SA, relatively few local species take up residence in and around homes (well vertical living species anyway) and those that do generally have solid populations away from urbanization. Things like Turner's gecko and Bibron's gecko seem to do wuite well alongside tropical house geckos and even snack on the odd baby house gecko (Although this can work both ways).
I guess there is a possibility of them being a threat where introduced into an area where a localised endemic species occurs (especially places like abandoned mines etc that the rare species has colonized), but I can't think of a decent example offhand. We also don't have a huge number of rare geckos that occupy the house gecko niche.
D