| helminth parasites of the southern sea otter enhydra lutris nereis in central california: abundance, distribution and pathology. | from october 1997 to may 2001, the gastrointestinal tracts from 162 beach-cast southern sea otters enhydra lutris nereis were examined for helminth parasites and associated lesions. carcasses were collected opportunistically in central california between pt. san pedro and pt. arguello. the primary goals of this study were to examine spatial and temporal variability in mortality due to parasite infection, identify factors associated with increased risk of infection, and illustrate the process of ... | 2003 | 12608572 |