Effect of water trophic level on the impact of the water hyacinth moth Niphograpta albiguttalis on Eichhornia crassipes

Canavan, Kim N; Coetzee, Julie A; Hill, Martin P; Paterson, Iain D

Title: Effect of water trophic level on the impact of the water hyacinth moth Niphograpta albiguttalis on Eichhornia crassipes
Creator: Canavan, Kim N
Creator: Coetzee, Julie A
Creator: Hill, Martin P
Creator: Paterson, Iain D
Subject: To be catalogued
Date Issued: 2014
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
Format: online resource
Format: application/pdf
Format: 1 online resource (6 pages)
Format: pdf
Publisher: Taylor and Francis
Language: English
Relation: African Journal of Aquatic Science
Relation: 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
Relation: 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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Paterson, Iain D (Associate Professor)

Hill, Martin Patrick (Distinguished Professor)

Coetzee, Julie A (Prof)

RU Department of Zoology and Entomology

RU DST/NRF SARChI for Insects in Sustainable Agricultural Ecosystems

SDG 14. Life Below Water

RU Department of Botany

SDG 15. Life On Land

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