SS4.04 The Relevance of Gelatinous Zooplankton to Interdisciplinary Linkages
Date: Friday, June 14, 2002
Time: 9:00:00 AM
Location: Saanich
 
BoltonTF, Dauphin Island Sea Lab, Dauphin Island, USA, tbolton@disl.org
Dawson, M, N, University of New South Wales, Sydney, Australia, mndawson@disl.org
Graham, W, M, Dauphin Island Sea Lab, Dauphin Island, USA, mgraham@disl.org
 
MOLECULAR STUDIES OF THE PHYLOGEOGRAPHIC STRMOLECULAR STUDIES OF THE PHYLOGEOGRAPHIC STRUCTURE OF THE TROPICAL INVADER PHYLLORHIZA PUNCTATA.
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The invasive jellyfish Phyllorhiza punctata von Lendenfeld (Cnidaria: Scyphozoa) bloomed in spectacular numbers in the northern Gulf of Mexico during 2000. This medusa has successfully invaded tropical and sub-tropical seas around the world, and it has potential for ecological harm in coastal waters of the Gulf of Mexico. Like most jellyfish, P. punctata has shown considerable morphological heterogeneity over its distributional range. In some areas, locally invading populations display dramatic morphological differences to their potential source populations. We will present mitochondrial and nuclear DNA sequence data examining the phylogeographic structure of P. punctata populations from the Gulf of Mexico, the Caribbean Sea, and coastal fringes of the Pacific and Atlantic oceans. We are currently developing a molecular revision of the existing taxonomic classification of P. punctata using this phylogeographic approach. Supporting data on morphological variation among the various populations will also be presented.