By means of columnar and thin-layer chromatography, the presence of carotenoids in Niphargus casimiriensis Skalski from an artesian well was studied. There are qualitative and quantitative differences in the carotenoid contents of the Niphargus casimiriensis Skalski specimens.
Czeczuga, B. and A. Skalski.
Carotenoids in Niphargus casimiriensis Skalski (Amphipoda) from artesian wells.
International Journal of Speleology,
Available at: http://scholarcommons.usf.edu/ijs/vol9/iss2/6