Polar Biology

, Volume 11, Issue 1, pp 19–25 | Cite as

Medusae from Mcmurdo Sound, Ross Sea including the descriptions of two new species, Leuckartiara brownei and Benthocodon hyalinus

  • R. J. Larson
  • G. R. Harbison
Article

Summary

Seven species of medusae were collected using scuba equipment in neritic waters of McMurdo Sound, Ross Sea, Antarctica. Two species dominated, the narcomedusa Solmundella bitentaculata and the scyphomedusa Diplulmaris antarctica. Two new taxa were found. Leuckartiara brownei n. sp., a pandeid anthomedusa, has gonads with two major longitudinal folds in the interradii and several smaller perradially directed folds. Besides four large perradial tentacles, it has up to 28 short “rudimentary” tentacles. This is the first report of this genus from the Southern Ocean. Benthocodon hyalinus n. gen., n. sp., a rhopalonematoid trachymedusa, has 8 linear to sinuous gonads on the radial canals. The tubular manubrium is attached to a gastric peduncle. The tentacles are numerous (about 800) and grow successively. This is the second reported trachymedusa from the Ross Sea. Solmundella bitentaculata ate the thecosome pteropod Limacina helicina. Diplulmaris antarctica medusae fed on the gymnosome pteropod Clione antarctica and on L. helicina. The hyperiid amphipod Hyperiella dilatata, mostly females, was seen attached to the exumbrellas of both D. antarctica and S. bitentaculata. Up to 54 amphipods were seen on each D. antarctica medusa. The amphipods did no visible damage to the medusae.

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References

  1. Bigelow H (1913) Medusae and siphonophorae collected by the U.S. fisheries Steamer “Albatross” in the northwestern Pacific, 1906, Proc US Nat Mus 44:1–119.Google Scholar
  2. Browne ET (1910) Coelenterata V. Medusae. National Antarctic Expedition (1901–1904). Nat Hist, Zool Bot 5:1–62Google Scholar
  3. Bowman TE (1973) Pelagic amphipods of the genus Hyperia and closely related genera (Hyperiidea: Hyperiidae). Smithsonian Cont Zool 136. 76 ppGoogle Scholar
  4. Bowman TE, Meyers CD, Hicks SD (1963) Notes on associations between hyperiid amphipods and medusae in Chesapeake and Narragansett Bays and the Niantic River. Chesapeake Sci 4:141–146Google Scholar
  5. Curtsinger W (1986) Under Antarctic ice. Nat Geo Mag 169:497–511Google Scholar
  6. Dana JD (1853) Crustacea, Part II. US Explor Exped 14:689–1618Google Scholar
  7. Foster BA (1989) Time and depth comparisons of the sub-ice zooplankton in McMurdo Sound, Antarctica. Polar Biol 9:431–435Google Scholar
  8. Gosse PH (1853) A naturalist's rambles on the Devonshire Coast. John van Voorst, 451 ppGoogle Scholar
  9. Harbison GR, Smith KL Jr, Backus RH (1973) Stygiomedusa fabulosa from the North Atlantic: its taxonomy, with a note on its natural history. J Mar Biol Assoc UK 53:615–617Google Scholar
  10. Harbison GR, Biggs DC, Madin LP (1977) The associations of Amphipoda Hyperiidea with gelatinous zooplankton II. Associations with Cnidaria, Ctenophora and Radiolaria. Deep-Sea Res 24:465–488Google Scholar
  11. Kramp PL (1961) Synopsis of the medusae of the world. J Mar Biol Assoc UK 40:1–469Google Scholar
  12. Larson RJ (1986) Pelagic Scyphomedusae (Scyphozoa: Coronatae and Semaeostomeae) of the Southern Ocean. In: Kornicker L. (ed) Biology of the Antarctic Seas XVI. Antarct Res Ser 41:59–165Google Scholar
  13. Larson RJ, Mills CE, Harbison GR (in press) Western Atlantic midwater hydrozoan and scyphozoan medusae: in situ studies using manned submersibles. HydrobiologiaGoogle Scholar
  14. Laval P (1974) Une modé le mathématique de l'évitement d'un filet à plancton, son application practique, et sa vérification indirecte in recourant au parasitisme de l'amphipode hypéride Vibilia armata Bovallius. J Exp Mar Biol Ecol 14:57–87Google Scholar
  15. Madin LP, Harbison GR (1977) The associations of Amphipoda Hyperiidea with gelatinous zooplankton. I. Associations with salpidae. Deep-Sea Res 24:449–463Google Scholar
  16. Naumov DV (1971) Hydromedusae and scyphomedusae from the Kurile-Kamchatka trench. Trudy Inst Okeanol 92:9–17Google Scholar
  17. O'Sullivan D (1982) A guide to the hydromedusae of the Southern Ocean and adjacent waters. ANARE Res Notes 5:1–136Google Scholar
  18. Russell FS (1953) The medusae of the British Isles, vol 1. Anthomedusae, Leptomedusae, Limnomedusae, Trachymedusae and Narcomedusae. Cambridge University Press, Cambridge, 530 ppGoogle Scholar
  19. Stebbing TRR (1881) Report on the amphipoda collected by HMS Challenger during the years 1873–76. Rep Sci Res Voyage HMS Challenger, Zool 29:1–1737Google Scholar
  20. White MG, Bone DG (1972) The interrelationship of Hyperia galba (Crustacea, Amphipoda) and Desmonema gaudichaudi (Scyphomedusa, Semaeostomeae) from the Antarctic. Br Antarct Surv Bull 27:39–49Google Scholar

Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • R. J. Larson
    • 1
  • G. R. Harbison
    • 1
  1. 1.Harbor Branch Oceanographic InstitutionFort PierceUSA

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