- Title
- Effect of water trophic level on the impact of the water hyacinth moth Niphograpta albiguttalis on Eichhornia crassipes
- Creator
- Canavan, Kim N, Coetzee, Julie A, Hill, Martin P, Paterson, Iain D
- Subject
- To be catalogued
- Date
- 2014
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/423740
- Identifier
- vital:72090
- Identifier
- xlink:href="https://doi.org/10.2989/16085914.2014.893225"
- Description
- Eutrophication contributes to the proliferation of alien invasive weed species such as water hyacinth Eichhornia crassipes. Although the South American moth Niphograpta albiguttalis was released in South Africa in 1990 as a biological control agent against water hyacinth, no post-release evaluations have yet been conducted here. The impact of N. albiguttalis on water hyacinth growth was quantified under low-, medium- and high-nutrient concentrations in a greenhouse experiment. Niphograpta albiguttalis was damaging to water hyacinth in all three nutrient treatments, but significant damage in most plant parameters was found only under high-nutrient treatments. However, E. crassipes plants grown in high-nutrient water were healthier, and presumably had higher fitness, than plants not exposed to herbivory at lower-nutrient levels. Niphograpta albiguttalis is likely to be most damaging to water hyacinth in eutrophic water systems, but the damage will not result in acceptable levels of control because of the plant's high productivity under these conditions. Niphograpta albiguttalis is a suitable agent for controlling water hyacinth infestations in eutrophic water systems, but should be used in combination with other biological control agents and included in an integrated management plan also involving herbicidal control and water quality management.
- Format
- computer, online resource, application/pdf, 1 online resource (6 pages), pdf
- Publisher
- Taylor and Francis
- Language
- English
- Relation
- African Journal of Aquatic Science, Canavan, K., Coetzee, J.A., Hill, M.P. and Paterson, I.D., 2014. Effect of water trophic level on the impact of the water hyacinth moth Niphograpta albiguttalis on Eichhornia crassipes. African Journal of Aquatic Science, 39(2), pp.203-208, African Journal of Aquatic Science volume 39 number 2 p. 203 2014 1727-9364
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Taylor and Francis Online Terms and Conditions Statement (https://www.tandfonline.com/terms-and-conditions)
- Rights
- Closed Access
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Collections
Coetzee, Julie A (Prof)
Hill, Martin Patrick (Distinguished Professor)
RU DST/NRF SARChI for Insects in Sustainable Agricultural Ecosystems
Paterson, Iain D (Associate Professor)
RU Department of Botany
SDG 14. Life Below Water
SDG 15. Life On Land
RU Department of Zoology and Entomology
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