| helminth parasitism in the neotropical cormorant, phalacrocorax brasilianus, in southern brazil: effect of host size, weight, sex, and maturity state. | forty-seven specimens of neotropical cormorants, phalacrocorax brasilianus, from lago guaíba, guaíba, state of rio grande do sul, brazil (30° 00' s, 51°15' w), were examined for helminth parasites between 1999 and 2003. twenty species of helminth parasites were found: ten digeneans: austrodiplostomum mordax, austrodiplostomum compactum, clinostomum sp., drepanocephalus olivaceus, drepanocephalus spathans, hysteromorpha triloba, ignavia olivacei, paryphostomum segregatum, prosthogonimus ovatus, a ... | 2011 | 21431903 |