| population biology and host-parasite relationships of triganodistomum attenuatum (trematoda: lissorchiidae) infecting the white sucker, catostomus commersoni (lacépède). | triganodistomum attenuatum demonstrated similar seasonal infection patterns in white suckers, catostomus commersoni, from the bellamy and oyster rivers, new hampshire. mean intensity was highest in spring 1975 and 1976. nongravid and gravid worms were common in the spring, and in the spring and summer, respectively. most individuals of t. attenuatum parasitized the posterior portion of the sucker's intestine. no definite changes in prevalence and mean intensity were evident at either river as fi ... | 1980 | 7391871 |