Parabodonida

Summary.mw-parser-output table.commons-file-information-table,.mw-parser-output.fileinfotpl-type-information{border:1px solid #a2a9b1;background-color:#f8f9fa;padding:5px;font-size:95%;border-spacing:2px;box-sizing:border-box;margin:0;width:100%}.mw-parser-output table.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{vertical-align:top}.mw-parser-output table.commons-file-information-table>tbody>tr>td,.mw-parser-output table.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:4px}.mw-parser-output.fileinfo-paramfield{background:#ccf;text-align:right;padding-right:0.4em;width:15%;font-weight:bold}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{border-top:0;padding-top:0;margin-top:-8px}@media only screen and (max-width:719px){.mw-parser-output table.commons-file-information-table,.mw-parser-output.commons-file-information-table.fileinfotpl-type-information{border-spacing:0;padding:0;word-break:break-word;width:100%!important}.mw-parser-output.commons-file-information-table>tbody,.mw-parser-output.fileinfotpl-type-information>tbody{display:block}.mw-parser-output.commons-file-information-table>tbody>tr>td,.mw-parser-output.commons-file-information-table>tbody>tr>th,.mw-parser-output.fileinfotpl-type-information>tbody>tr>td,.mw-parser-output.fileinfotpl-type-information>tbody>tr>th{padding:0.2em 0.4em;text-align:left;text-align:start}.mw-parser-output.commons-file-information-table>tbody>tr,.mw-parser-output.fileinfotpl-type-information>tbody>tr{display:flex;flex-direction:column}.mw-parser-output.commons-file-information-table+table.commons-file-information-table,.mw-parser-output.commons-file-information-table+div.commons-file-information-table>table{margin-top:-1px}.mw-parser-output.fileinfo-paramfield{box-sizing:border-box;flex:1 0 100%;width:100%}} Description: English: Cryptobia helicis, scanning EM, trophozoite, x15,000. Date: 15 September 2012, 17:22:26. Source: Own work. Author: Rosser1954.

Ribadelago de Franco, Castille and Leon, Spain

Bodo caudatus (beau-dough), bodonids are common and widespread in many habitats. In the olden days (more than 20 years ago) any small heterotrophic flagellate was referred to as a bodonid - such was the state of ignorance. This species glides along the ground, picking up individual bacteria with the mouth - located in the slightly prominent region to the left of the point of flagellar insertion. The anterior flagellum can be seen to insert into a small subapical depression. Phase contrast.

Bodo caudatus (beau-dough caw-dat-us), bodonids are common and widespread in many habitats. In the olden days (more than 20 years ago) any small heterotrophic flagellate was referred to as a bodonid - such was the state of ignorance. This species glides along the ground, picking up individual bacteria with the mouth - located in the slightly prominent region to the left of the point of flagellar insertion. Phase contrast

Bodo caudatus (Dujardin, 1841) Stein 1878. Bodo cells that are usually ovate, compressed and are 11 - 16 microns long with a conspicuous apical mouth. The cell body is very flexible but not amoeboid. Two flagella emerge from a subapical pocket, the anterior flagellum is about the cell length, is recurved so that it is directed towards the rear and beats with a paddling motion. The acronematic posterior flagellum is 2 - 2.5 times the cell length, emerges from the pocket about 1/6 along cell and appears to attach to the cell body or to lie in a groove when the cells are not moving. The cells move by skidding or swimming using the anterior flagellum. This species is predatory.

Cryptobia are monogenetic (single host) bodonid flagellates with an anteriorly directed flagellum and a recurrent flagellum attached along the entire length of the body, but does not form a prominent undulated membrane. The cytostome is situated far from the flagellar pocket but is linked to it by a prominent preoral ridge. The cell bears a kinetoplast at the base of the flagella. All are parasitic or endo-commensals in host cavities such as reproductive system of gastropods, the gut of fishes. This species, Cryptobia helicis, is from the seminal receptacle of Helix - a snail, contracted and elongated form with the anterior kinetoplast close to the nucleus, the anterior free flagellum and the recurrent adherent flagellum (Giemsa). 

From snails, phase contrast showing the anterior flagellum and the recurrent adhering flagellum.

Grom snails, phase contrast showing the anterior flagellum and the recurrent adhering flagellum.

Cryptobia are monogenetic (single host) bodonid flagellates with an anteriorly directed flagellum and a recurrent flagellum attached along the entire length of the body, but does not form a prominent undulated membrane. The cytostome is situated far from the flagellar pocket but is linked to it by a prominent preoral ridge. The cell bears a kinetoplast at the base of the flagella. All are parasitic or endo-commensals in host cavities such as reproductive system of gastropods, the gut of fishes. This species, Cryptobia intestinalis from the gut of the fish Box boops (Giemsa). 

Trypanoplasma (trip-anne-o-plas-ma) parasitic kinetoplastid flagellates, with one free anterior flagellum and one recurrent one attaching to the cell surface to form an undulating membrane. The recurrent flagellum projects behind the cell. Phase contrast.

Trypanoplasma (trip-anne-o-plas-ma) parasitic kinetoplastid flagellates, with one free anterior flagellum and one recurrent one attaching to the cell surface to form an undulating membrane. The recurrent flagellum projects behind the cell. Also in the image is a red blood cell. Phase contrast.

Trypanoplasma are digenetic (two hosts) bodonid flagellates in which the recurrent flagellum is attached along the entire length of the body to form a prominent undulating membrane. Most of them live in the blood of fishes and in the vector leech. Trypanoplasma borelli infects carp and several European cyprinid fishes and is transmitted by leeches such as Piscicola geometra or Hemiclepsis marginata. Trypanoplasma borelli in the blood of fish (Giemsa), nucleus (n), kinetoplast (k), anterior flagellum (fa), recurrent flagellum (fr).