Publication Date

3-2014

Series Number

252

Publisher

Department of Fisheries

City

Perth, WA

ISBN

978-1-921845-74-1

ISSN

1035 - 4549

Abstract

In Western Australia, the invasive colonial ascidian Didemnum perlucidum was first detected in the Swan River Estuary in 2010 and subsequently recorded at multiple locations across the State. Ongoing research by the Department of Fisheries (the Department) indicates that this species exhibits strong seasonal changes in abundance. Although, D. perlucidum is able to reproduce sexually (larvae) and asexually (budding) year round, larvae density and settlement, and overall colony size significantly decreases during the colder months (winter). From a management point of view this period would present the best opportunity for an attempt at eradication or control of this species.

Number of Pages

40

Keywords

Invasive species, Swan River, Biosecurity, Fisheries

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