| helminth parasites in ringed seals (pusa hispida) from svalbard, norway with special emphasis on nematodes: variation with age, sex, diet, and location of host. | complete gastrointestinal tracts from 257 ringed seals (pusa hispida) from svalbard, norway, were examined for helminth parasites. three different helminth groups were recorded (acanthocephalans 61.1%; nematodes 38%; cestodes 0.9%). acanthocephalans (polymorphidae) and cestodes (anophryocephalus and diphyllobothrium sp(p)., as well as unidentified species, were confined to the intestines. the anisakid nematodes phocascaris phocae, pseudoterranova sp(p)., anisakis sp(p)., and phocascaris/contraca ... | 2010 | 20950103 |