New Zealand Journal of Marine and Freshwater Research abstracts
First New Zealand records of three non-indigenous zooplankton species: Skistodiaptomus
pallidus, Sinodiaptomus valkanovi,and Daphnia dentifera
Ian C. Duggan
John D. Green
David F. Burger
Centre for Biodiversity and Ecology Research
Department of Biological Sciences
University of Waikato, Private Bag 3105
Hamilton, New Zealand
email: i.duggan@waikato.ac.nz
Abstract We present the first records
from New Zealand of three non-indigenous freshwater zooplankton species: the
Japanese Sinodiaptomus valkanovi, North American Skistodiaptomus
pallidus (Copepoda), and Daphnia dentifera (Anomopoda). Owing
to their geographic origins, introduction to New Zealand by natural passive
dispersal is highly unlikely. Skistodiaptomus pallidus was found
in Auckland ponds at two localities, and also among live fish food sold in
an aquarium store. As such the aquarium trade is an active vector. Skistodiaptomus pallidus and S.
valkanovi are currently restricted in distribution to constructed ponds
and, although they have the potential to spread, eradication may still be possible.
However, D. dentifera is widespread and eradication is not feasible.Prevention
of further zooplankton invasions will rely on examination of potential introduction
vectors, and adoption of effective management strategies for each vector (e.g.,
the prevention of the sale of live food containing non-indigenous species from
aquarium stores).
Keywords biological invasions;
exotic species; biosecurity; aquaria; invertebrates; Centropagidae; Diaptomidae;
Cladocera
New Zealand Journal of Marine and Freshwater Research, 2006, Vol. 40:
561–569
0028–8330/06/4004–0561 © The Royal Society
of New Zealand 2006
M06018; Online publication date 28 September 2006. Received 19 April
2006; accepted 7 August 2006
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