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European hydromedusa Eleutheria dichotoma (Cnidaria: Hydrozoa: Anthomedusae) found at high densities in New South Wales, Australia: distribution, biology and habitat
Fraser, C.; Capa, M.; Schuchert, P. (2006). European hydromedusa Eleutheria dichotoma (Cnidaria: Hydrozoa: Anthomedusae) found at high densities in New South Wales, Australia: distribution, biology and habitat. J. Mar. Biol. Ass. U.K. 86(4): 699-703
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

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Keywords
    Geographical distribution; Habitat; Introduced species; New records; Population number; Eleutheria dichotoma Quatrefages, 1842 [WoRMS]; PSE, Australia, New South Wales [Marine Regions]; Marine

Authors  Top 
  • Fraser, C.
  • Capa, M.
  • Schuchert, P., more

Abstract
    Eleutheria dichotoma, a hydrozoan not previously recorded from the southern hemisphere, was found at high densities at several locations along the coast of New South Wales (NSW), Australia, between August and November 2005. The identity of the species was confirmed by morphological and molecular (16S rDNA) comparisons with European specimens. Local densities, distribution and habitat (algal substrate) were examined. The medusae were found along a 400 km stretch of coastline between Bateau Bay (33°23'S 151°29'E) and Pebbly Beach (35°35'S 150°43'E), primarily on the green alga Ulva, at mean densities of more than 50 individuals per 10 cm2 plot. The species is probably a recent introduction to Australia.

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