Only 1 female has given birth so far and it was 5 live + 7 slugs ,3 of the babies died within 48 hours and the last 2 are doing well 30+ days later.Last year my 2 females gave birth to 22 babies and all lived. My best female ever (16 years ago) always gave 15-25 babies a year but some always died within the first month
I been breeding pink tongue skinks for nearly 30 years and it seems that when they have large litters the babies are small and not so hardy but if you take them out and keep them alone in a box you will have more that will live but I leave mine in with the adults and they have to look for food themselves and so when I sell the babies I know that they are good and eating
I been doing this a lot of years now, I have between 10 and 40 babies every year and maybe 3-5 a year dies and would have in nature aswell.I always leave the babies in with the adult until they are sold and mine never eat their young but seem to show where to feed and sleep (even the male)
Whether or not they would have survived in the wild is irrelevant, natural selection shouldn't be applied to a captive animal. Unless the ones that died were deformed or something as such