CMarZ Species Page




Thalia democratica (Forskal, 1775)


Salpa mucronata (Froskal, 1775)
Salpa spinosa (Otto, 1823)
Dubreuillia cirrhosa (Lesson, 1830)
Salpa caboti (Desor, 1848)
Thalia democratica var. orientalis (Tokioka, 1937)
Thalia democratica f. typica (Sewell, 1953)
Thalia democratica ssp. democratica (Borgelt, 1968)


Salpa democratica (Froskal, 1775)



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  Kingdom Animalia --
   Phylum Chordata --
  Subphylum Tunicata --
  Class Thaliacea --
  Subclass --
  Infraclass --
  Superorder --
  Order Salpida
  Family Salpidae
  Genus Thalia
  Species democratica

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Distinguishing features:

Aggregate form with anterior end of body rounded, the posterior end is somewhat fusiform. The test is bluntly pentagonal and never echinate. M1-M3 and M4-M5 are fused mid-dorsally; both groups of muscle bands are separated in lateral view. The nucleus has a posterior projection. The test is pentagonal posteriorly. The number of muscle fibres in M1-M5 is 15-17, normally 16. The atrial opening is not central and there is a posterior lateral protuberance on one side only. Solitary form with smooth test, atrial palps simple and straight; lateralprojections small, medioventral projections are small and of unequal length, the anterior ones are the smallest. All test projections are echinate. M1-M4 are continuous dorsally and ventrally; M5 is narrowly interupted ventrally. M2-M4 and M5-M6 are converged mid-dorsally over a short distance only. The stomach partly extends into the middle posterior projection.


Prosome length:

Total length:
Agregate; 1.8 mm (, 0) - 18.2 mm (, 0)
Solitary; 2.3 mm (, 0) - 11.7 mm (, 0)


Cosmopolitan, eurythermic species from warmer waters; roughly occurring between ca. 60 N and ca. 40 S. Also present in the Mediterranean Sea.

Depth distribution: Epipelagic, living in the upper 100 m, does not perform diurnal vertical migration.


The marine pelagic tunicate Thalia democratica has one of the fastest individual growth rates and shortest generation times of any multicellular animal.


Accession Numbers:

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Links to literature:

   topModification History:

History Link

This information was compiled and submitted by Paola Batta Lona.

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Distribution Map

Specimen Data Map from OBIS



Program, Version August 30, 2012/V1.09
Page generated Fri Apr 20 17:51:22 2018 from the live database