title: Geographical variability in the colour polymorphism of Idotea baltica (Isopoda) in the northern Baltic.
mesh_terms: D000818:Animals; D003445:Crustacea / Q000235:genetics*; D004463:Ecology; D005260:Female; D008297:Male; D010641:Phenotype; D010858:Pigmentation; D011110:Polymorphism, Genetic; D012537:Scandinavian and Nordic Countries