Herdmania Subpallida
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''Herdmania'' is a genus of ascidian tunicates in the family Pyuridae. Species within the genus ''Herdmania'' include:Sanamyan, K. (2015)
''Herdmania'' Lahille, 1888 .
In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, R.; Swalla, B.J.; Turon, X. (2015) Ascidiacea World Database. Accessed through: World Register of Marine Species on 2015-12-29.
* '' Herdmania armata'' Monniot & Monniot, 2001 * '' Herdmania colona'' Monniot & Monniot, 2003 * '' Herdmania coutieri'' Monniot, 2002 * '' Herdmania fimbriae'' Kott, 2002 * ''
Herdmania grandis ''Herdmania'' is a genus of ascidian tunicates in the family Pyuridae. Species within the genus ''Herdmania'' include:Sanamyan, K. (2015)''Herdmania'' Lahille, 1888 .In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, ...
'' (Heller, 1878) * '' Herdmania inflata'' (Van Name, 1918) * '' Herdmania insolita'' Monniot & Monniot, 2001 * '' Herdmania japonica'' (Hartmeyer, 1909) * '' Herdmania kiiensis'' Nishikawa, 2002 * ''
Herdmania mauritiana ''Herdmania'' is a genus of ascidian tunicates in the family Pyuridae. Species within the genus ''Herdmania'' include:Sanamyan, K. (2015)''Herdmania'' Lahille, 1888 .In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, ...
'' (Drasche, 1884) * '' Herdmania mentula'' Kott, 2002 * '' Herdmania mirabilis'' (Drasche, 1884) * ''
Herdmania momus The solitary ascidian ''Herdmania momus'' is one of the most commonly encountered species of ascidians. While commonly referred to simply as ''sea squirts'', this name is ambiguous, as it can refer to any member of the sub-phylum Tunicata. Thi ...
'' (Savigny, 1816) * '' Herdmania pallida'' (Heller, 1878) * '' Herdmania pennata'' (Monniot & Monniot, 1991) * '' Herdmania polyducta'' (Monniot & Monniot, 1989) * '' Herdmania subpallida'' Nishikawa, 2002 Species names currently considered to be synonyms: * ''Herdmania bostrichobranchus'' Metcalf, 1900: synonym of ''
Bostrichobranchus pilularis ''Bostrichobranchus'' is a genus of ascidian tunicates in the family Molgulidae Molgulidae is a Family (biology), family of tunicates in the Class (biology), class Ascidiacea. Following a revision in 2007, the family Hexacrobylidae was synon ...
'' (Verrill, 1871) * ''Herdmania claviformis'' Ritter, 1903: synonym of ''
Euherdmania claviformis Euherdmaniidae is a family of tunicates belonging to the order Aplousobranchia. Genera: * '' Euherdmania'' Ritter, 1904 References Aplousobranchia {{tunicata-stub ...
'' (Ritter, 1903) * ''Herdmania contorta'' Monniot, 1992: synonym of ''
Herdmania momus The solitary ascidian ''Herdmania momus'' is one of the most commonly encountered species of ascidians. While commonly referred to simply as ''sea squirts'', this name is ambiguous, as it can refer to any member of the sub-phylum Tunicata. Thi ...
'' (Savigny, 1816) * ''Herdmania curvata'' Kott, 1952: synonym of ''
Herdmania momus The solitary ascidian ''Herdmania momus'' is one of the most commonly encountered species of ascidians. While commonly referred to simply as ''sea squirts'', this name is ambiguous, as it can refer to any member of the sub-phylum Tunicata. Thi ...
'' (Savigny, 1816) * ''Herdmania vasculosa'' (Herdman, 1888): synonym of ''
Ascidia bathybia ''Ascidia'' is a genus of tunicates in the family Ascidiidae. Selected species * '' Ascidia achimotae'' Millar, 1953 * '' Ascidia adamanensis'' Oka, 1915 * ''Ascidia ahodori'' Oka, 1927 * '' Ascidia alisea'' Monniot & Monniot, 2006 * ''Ascid ...
'' Hartmeyer, 1922


Habitat

''Herdmania'' is a sedentary filter feeding tunicate found in marine habitats. The animal often occurs in gregorious form.


Characters

The body flat purse like structure with length of 6-13 cms. Breadth is 4-7 cms. Colour is brownish. The animal is pretty buried in sand by means of foot. The body proper has two projections-atrial and branchial siphons. Branchial siphon has a branchial or incurrent aperture or mouth. The atrial siphon has atrial or excurrent aperture or cloaca. Each aperture is surrounded by four lobes or lips. The whole body is covered by thick leathery and translucent Tunic or test. The same is wrinkled. It is formed of cellulose like organic substances known as tunicin. ''Herdmania'' is filter or ciliary feeder. Digestive tract is complete. Liver and pyloric glands are present. Respiration is with the help of branchial sac. Water enters the body from the region of mouth or branchial aperture, passes through the pharynx where food is picked up. It comes out through atrial aperture. The current is maintained by cilia lining the gill slits. Water current also helps in gaseous exchange.


Reproduction

When disturbed, ''Herdmania'' emits a jet of water through both of its apertures. The animal is hermaphrodite. Cross fertilisation occurs which is external. Larval stage or tadpole undergoes retrogressive metamorphosis to become an adult. *


References

Stolidobranchia Tunicate genera Taxa named by Fernando Lahille {{tunicata-stub