Research Article

Marine Biology

, Volume 144, Issue 1, pp 183-202

Introduced and cryptogenic species in Port Phillip Bay, Victoria, Australia

  • Chad L. HewittAffiliated withCentre for Research on Introduced Marine Pests, CSIRO Marine ResearchMinistry of Fisheries Email author 
  • , Marnie L. CampbellAffiliated withCentre for Research on Introduced Marine Pests, CSIRO Marine ResearchMinistry of Fisheries
  • , Ronald E. ThresherAffiliated withCentre for Research on Introduced Marine Pests, CSIRO Marine Research
  • , Richard B. MartinAffiliated withCentre for Research on Introduced Marine Pests, CSIRO Marine Research
  • , Sue BoydAffiliated withMuseum Victoria
  • , Brian F. CohenAffiliated withMarine and Freshwater Resources Institute
  • , David R. CurrieAffiliated withMarine and Freshwater Resources Institute
  • , Martin F. GomonAffiliated withMuseum Victoria
  • , Michael J. KeoughAffiliated withDepartment of Zoology, University of Melbourne
    • , John A. LewisAffiliated withPlatforms Sciences Laboratory, Defence Science and Technology Organisation
    • , Matthew M. LockettAffiliated withMuseum VictoriaDepartment of Environmental Science, University of Technology Sydney
    • , Nicole MaysAffiliated withCentre for Research on Introduced Marine Pests, CSIRO Marine ResearchNortheast-Midwest Institute
    • , Matthew A. McArthurAffiliated withMarine and Freshwater Resources Institute
    • , Tim D. O'HaraAffiliated withMuseum Victoria
    • , Gary C. B. PooreAffiliated withMuseum Victoria
    • , D. Jeff RossAffiliated withCentre for Research on Introduced Marine Pests, CSIRO Marine ResearchDepartment of Zoology, University of Melbourne
    • , Melissa J. StoreyAffiliated withMuseum VictoriaDepartment of Zoology, University of Melbourne
    • , Jeanette E. WatsonAffiliated withHydrozoan Research Laboratory
    • , Robin S. WilsonAffiliated withMuseum Victoria

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

Port Phillip Bay (PPB) is a large (1,930 km2), temperate embayment in southern Victoria, Australia. Extensive bay-wide surveys of PPB have occurred since 1840. In 1995/1996 the Commonwealth Scientific and Industrial Research Organization (CSIRO) Centre for Research on Introduced Marine Pests (CRIMP) undertook an intensive evaluation of the region with the aims of developing a comprehensive species list of native and introduced biota and contrasting previous bay-wide assessments with a current field survey in order to detect new incursions and discern alterations to native communities. Two methods were used to meet these aims: a re-evaluation of regional museum collections and published research in PPB to identify and determine the timing of introductions; and field surveys for benthic (infauna, epifauna and encrusting) organisms between September 1995 to March 1996. One hundred and sixty introduced (99) and cryptogenic (61) species were identified representing over 13% of the recorded species of PPB. As expected, the majority of these are concentrated around the shipping ports of Geelong and Melbourne. Invasions within PPB appear to be increasing, possibly due to an increase in modern shipping traffic and an increase in aquaculture (historically associated with incidental introductions); however the records of extensive biological surveys suggest that this may, in part, be an artefact of sampling effort. In contrast to Northern Hemisphere studies, PPB (and Southern Hemisphere introductions in general) have significantly different suites of successfully invading taxa. PPB is presented as one of the most invaded marine ecosystems in the Southern Hemisphere.