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dc.contributor.authorDuggan, Ian C.
dc.contributor.authorEastwood, Kevin R.
dc.date.accessioned2012-11-21T22:15:22Z
dc.date.available2012-11-21T22:15:22Z
dc.date.issued2012
dc.identifier.citationDuggan, I.C. & Eastwood, K.R. (2012) Detection and distribution of Craspedacusta sowerbii: Observations of medusae are not enough. Aquatic Invasions, 7(2), 271-275en_NZ
dc.identifier.issn1798-6540
dc.identifier.urihttps://hdl.handle.net/10289/6875
dc.description.abstractThe freshwater cnidarian Craspedacusta sowerbii, native to the Yangtze valley, has invaded lakes and ponds throughout the world. Most distribution records have to date been based on observations of the medusa (jellyfish) stage, including numerous recent publications. We aimed to determine whether polyps are widespread in lakes, and geographical areas, outside of where medusae have been observed, and whether constructed waters are more easily invaded than natural waters. Our results show that C. sowerbii is more common and widespread than is apparent from observations of medusae. We argue that observed occurrences of medusae provide little useful information regarding the distribution of this species, and that published records of new jellyfish occurrences provide unreliable estimates of the timing of introduction, establishment or spread of C. sowerbii in new regions. We found no evidence that constructed waters were more readily invaded than natural waters. Overall, accurate determination of Craspedacusta occurrence and distribution requires systematic surveys of the polyp stages.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherRegional Euro-Asian Biological Invasions Centre (REABIC)en_NZ
dc.relation.urihttp://www.aquaticinvasions.net/2012/issue2.html
dc.rights© 2012 The authors. Creative Commons Attribution 2.0 Generic (CC BY 2.0)en_NZ
dc.subjectConstructed watersen_NZ
dc.subjectFreshwater jellyfishen_NZ
dc.subjectPolypsen_NZ
dc.subjectSpecies detectionen_NZ
dc.titleDetection and distribution of Craspedacusta sowerbii: Observations of medusae are not enoughen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.3391/ai.2012.7.2.013en_NZ
dc.relation.isPartOfAquatic Invasionsen_NZ
pubs.begin-page271en_NZ
pubs.elements-id37829
pubs.end-page275en_NZ
pubs.issue2en_NZ
pubs.volume7en_NZ


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