| phylogeny and cocoon production in the parasitic leech myzobdella lugubris leidy, 1851 (hirudinidae, piscicolidae). | myzobdella lugubris is a commensal leech on crustaceans and a parasite to fishes, surviving predominantly in brackish waters throughout north america. specimens in this study were collected within the tidal zone of the delaware river basin (new jersey and pennsylvania). to compare regional m. lugubris specimens, defined characters were scored after dorsal and ventral dissections, and phylogenetic relationships were resolved using cytochrome c oxidase subunit 1 (co1), 12s ribosomal rna (rdna) and ... | 2018 | 29351062 |