3 in Phylum Nematoda: feeding habits for all valid genera using a new, universal scheme encompassing the entire phylum, with descriptions of morphological characteristics of the stoma, a key, and discussion of the evidence for trophic relationships

<p>3. Parasites</p><table><tbody><tr><th><b>Host type</b></th><th><b>Host or host relationship</b></th><th><b>Main location</b></th><th><b>Equivalent in plant-parasitic terrestrial scheme (Yeates <i>et al</i>. 1993)</b> 1</th></tr></tbody><tbody><tr><th>Plant</th><td>Internal modifier</td><td>Aerial</td><td>Sedentary parasite-part (1a)</td></tr><tr><th></th><td></td><td>Below ground</td><td>Sedentary parasite-part (1a)</td></tr><tr><th></th><td>Internal migrator</td><td>Aerial</td><td>Migratory parasite-part (1b)</td></tr><tr><th></th><td></td><td>Below ground</td><td>Migratory parasite-part (1b)</td></tr><tr><th></th><td>External root feeder</td><td>Subsurface</td><td>Semi-endoparasite (1c)</td></tr><tr><th></th><td></td><td>Surface</td><td>Ectoparasite (1d)</td></tr><tr><th></th><td>Plant browser</td><td></td><td>Epidermal (1e) Algal-part (1f)</td></tr><tr><th></th><td>Wood or bark associate</td><td></td><td>Unicellular Eucaryote-part (6) Hyphal feeding-part (2) Bacterial (3) Predator (5)</td></tr><tr><th>Invertebrate</th><td>Arthropod</td><td></td><td>Dispersal or infective-part (7)</td></tr><tr><th></th><td>Other host</td><td></td><td>Dispersal or infective-part (7)</td></tr><tr><th>Vertebrate</th><td>Fish</td><td></td><td></td></tr><tr><th></th><td>Amphibian</td><td></td><td>Dispersal or infective-part (7)</td></tr><tr><th></th><td>Reptile</td><td></td><td>Dispersal or infective-part (7)</td></tr><tr><th></th><td>Bird</td><td></td><td>Dispersal or infective-part (7)</td></tr><tr><th></th><td>Mammal</td><td></td><td>Dispersal or infective-part (7)</td></tr><tr><th>Unknown</th><td></td><td></td><td>Dispersal or infective-part (7)</td></tr></tbody></table>