Skip to main content
Log in

Polyp and medusa of Dipurena bicircella n. sp. (Hydrozoa: Corynidae) from Northern California

  • Published:
Marine Biology Aims and scope Submit manuscript

Abstract

The polyp and medusa of Dipurena bicircella n. sp., a metagenic hydrozoan from Northern California, USA, is described. The arrangement of capitate tentacles of the polyp, in two alternating cycles or circlets, is unique to the genus Dipurena as well as to the family Corynidae. Medusae released in the laboratory attained sexual maturity in 2 weeks. The adult medusa can be distinguished from other medusae of the genus by means of 2 gonad rings, a slight terminal nematocyst cluster on each tentacle, and a relatively small size (about 2 mm in bell height). The polyp was not found in association with sponges, as is the case with some of the other polyps of the genus Dipurena. The medusa is not yet known from the plankton.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Literature Cited

  • Bouillon, J.: Diagnoses préliminaires des trois hydroides de Roscoff. Trav. Stn biol. Roscoff (N.S.) 16, p. 54 (1965)

    Google Scholar 

  • Brinckmann, A. and K.W. Petersen: On some distinguishing characters of Dipurena reesi Vannucci, 1956 and Cladonema radiatum Dujardin, 1843. Pubbl. Staz. zool. Napoli 31, 386–392 (1960)

    Google Scholar 

  • Calder, D.R.: Hydroid and young medusa stages of Dipurena strangulata (Hydrozoa, Corynidae). Biol. Bull. mar. biol. Lab., Woods Hole 138, 109–114 (1970)

    Google Scholar 

  • Forbes, E.: On the pulmograde medusae of the British seas. Ann. Mag. nat. Hist. (Ser. 1) 18, 284–287 (1846)

    Google Scholar 

  • Haeckel, E.: Das System der Medusen. Erster Theil einer Monographie der Medusen, 360 pp., 20 pls. Jena: Gustav Fischer 1879

    Google Scholar 

  • McCrady, J.: Gymnophthalmata of Charleston Harbour. Proc. Elliott Soc. nat. Hist., Charleston 1, 103–221, Pls. 8-12 (1857)

    Google Scholar 

  • Pardy, R.L.: The feeding biology of the gymnoblastic hydroid Pennaria tiarella. In: Experimental coelenterate biology, pp 84–91. Ed. by H. Lenhoff, L. Muscatine, and L. Davis. Honolulu: University of Hawaii Press 1971

    Google Scholar 

  • Rees, J.T.: Studies on hydrozoa of the central California coast: aspects of systematics and ecology, 267 pp. Ph.D. dissertation, University of California, Berkeley 1975

  • Rees, W.J.: The hydroid of the medusa Dipurena halterata (Forbes). J. mar. biol. Ass. U.K. 23, 343–346 (1939)

    Google Scholar 

  • —: Notes on British and Norwegian hydroids and medusae. J. mar. biol. Ass. U.K. 25, 129–141 (1941)

    Google Scholar 

  • Russell, F.S.: The medusae of the British Isles. I: Hydromedusae, xii+530 pp, 35 pls. Cambridge University Press 1953

  • Vannucci, M.: Biological notes and description of a new species of Dipurena (Hydrozoa, Corynidae). Proc. zool. Soc.Lond. 127, 479–487 (1956)

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

Communicated by J.S. Pearse, Santa Cruz

Rights and permissions

Reprints and permissions

About this article

Cite this article

Rees, J.T. Polyp and medusa of Dipurena bicircella n. sp. (Hydrozoa: Corynidae) from Northern California. Mar. Biol. 39, 197–202 (1977). https://doi.org/10.1007/BF00387005

Download citation

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00387005

Keywords

Navigation