Do 8 string basses need some special kind of pickup, or do normal 4 string pickups work?

I checked Google and used the search bar, but I didn't see anything.
Moser Custom Shop 5-string Scimitar
Moser Arachnid
Fender Jazz MIM
Digitech Bass Driver
Morley Dual Bass Wah
Genz Benz GBE750
Genz Benz GB410T-XB2