Environmental cues for koi carp (Cyprinus carpio) spawning aggregations and bottleneck locations near Huntly, New Zealand

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dc.contributor.authorGarrett-Walker, Jeremyen_NZ
dc.date.accessioned2019-04-14T23:20:37Z
dc.date.available2015en_NZ
dc.date.available2019-04-14T23:20:37Z
dc.date.issued2015en_NZ
dc.description.abstractKoi carp (Cyprinus carpio) were monitored from August to December 2014 near Huntly, in the north Waikato, to document migratory and spawning behaviour. Monitoring involved a combination of daily water level and temperature logging, as well as semi-weekly observations of koi carp numbers and spawning activity. These data were used to examine the influence of water level and temperature on migration and spawning behaviour. No correlation between water level and koi carp migration was found; however, the monitoring period followed two years of drought in the region resulting in unusually low water levels for the time of year. In contrast, koi carp migration and spawning behaviour appeared to be related to water temperature, with spawning consistently observed after water temperatures were stable at 15°C. This temperature spawning threshold is lower than previously observed for northern New Zealand, but is within the range identified in overseas literature. It is recommended that future studies investigate a greater range of seasonal and climatic variations, and address the potential for increased activity at night when fish may be more active.
dc.format.mimetypeapplication/pdf
dc.identifier.citationGarrett-Walker, J. (2015). Environmental cues for koi carp (Cyprinus carpio) spawning aggregations and bottleneck locations near Huntly, New Zealand. ERI report No. 63. Client report prepared for Waikato regional Council. Hamilton, New Zealand: Environmental Research Institute, Faculty of Science and Engineering, The University of Waikato.en
dc.identifier.issn2350-3432en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/12471
dc.language.isoen
dc.publisherEnvironmental Research Institute, Faculty of Science and Engineering, The University of Waikatoen_NZ
dc.relation.ispartofseriesERI report
dc.rights© 2015 copyright with the authors.
dc.titleEnvironmental cues for koi carp (Cyprinus carpio) spawning aggregations and bottleneck locations near Huntly, New Zealanden_NZ
dc.typeReport
pubs.commissioning-bodyClient report prepared for Waikato regional Councilen_NZ
pubs.confidentialfalseen_NZ
pubs.elements-id236470
pubs.organisational-group/Waikato
pubs.organisational-group/Waikato/FSEN
pubs.organisational-group/Waikato/FSEN/Environmental Research Institute
pubs.place-of-publicationHamilton, New Zealanden_NZ
uow.relation.series63
uow.verification.statusverified
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