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Repoductive phenology of the introduced kelp Undaria pinnatifida (Phaeophyscae,Laminariales) in Port Phillip Bay(Victoria, Australia)


Primo, C and Hewitt, CL and Campbell, ML, Repoductive phenology of the introduced kelp Undaria pinnatifida (Phaeophyscae,Laminariales) in Port Phillip Bay(Victoria, Australia), Biological Invasions, 12, (9) pp. 3081-3092. ISSN 1387-3547 (2010) [Refereed Article]

DOI: doi:10.1007/s10530-010-9700-4


A thorough understanding of the reproductive phenology of introduced species is crucial for effective management and control. Undaria pinnatifida is an invasive macroalga from the Northwest Pacific which has been recently introduced into three countries in the Southern Hemisphere: Australia, New Zealand and Argentina. Reproductive phenological studies in Port Phillip Bay, Australia, were undertaken and compared with other populations in the Southern Hemisphere, especially with those from Tasmania which were suspected to be very different. The growth season began earlier in Port Phillip Bay than in Tasmanian populations, and abundance was higher. Growth rates were lower in Port Phillip Bay, but this might be due to the different morphology of both populations. The maximum spore release competency of U. pinnatifida in Port Phillip Bay was 12.1 × 105 spores cm-2 h-1 which is 20 times the maximum obtained in Tasmania (0.6 × 105 spores cm-2 h-1). For most of the growth season, spore release competency ranged between 2 and 3 × 105 spores cm-2 h-1, 3-5 times more than in Tasmania. Undaria pinnatifida has not been established outside Port Phillip Bay in continental Australia, but a precautionary approach should be undertaken in order to avoid further spread. Monitoring for early detection and removal of immature sporophytes prior to spore release seem to be the best options. This monitoring should be continuous since new recruits may appear throughout the growth season (April-February) and it should be combined with informative programmes to reduce the chances of spread. © 2010 Springer Science+Business Media B.V.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Phycology (incl. marine grasses)
Objective Division:Environmental Management
Objective Group:Coastal and estuarine systems and management
Objective Field:Control of pests, diseases and exotic species in coastal and estuarine environments
UTAS Author:Primo, C (Dr Carmen Primo Perez)
UTAS Author:Hewitt, CL (Professor Chad Hewitt)
UTAS Author:Campbell, ML (Associate Professor Marnie Campbell)
ID Code:64428
Year Published:2010
Web of Science® Times Cited:15
Deposited By:NC Marine Conservation and Resource Sustainability
Deposited On:2010-07-28
Last Modified:2011-03-24

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