| anguillicola crassus infection in anguilla rostrata from small tributaries of the hudson river watershed, new york, usa. | we studied the invasion of the exotic nematode parasite anguillicola crassus in the american eel anguilla rostrata using tributaries of the hudson river estuary. yellow-phase american eels were sampled from 6 tributaries, and their swim bladders were examined for nematode infection. prevalence averaged 39% with an intensity of 2.4 nematodes per eel. parasite distribution was not significant along a latitudinal gradient; on the other hand, physical barriers (dams and natural waterfalls) significa ... | 2008 | 18429440 |