Predicting the risk of non-target damage to a close relative of a target weed using sequential no-choice tests, paired-choice tests and olfactory discrimination experiments

Sutton, Guy F; Paterson, Iain D; Compton, Stephen G; Paynter, Quentin

Title: Predicting the risk of non-target damage to a close relative of a target weed using sequential no-choice tests, paired-choice tests and olfactory discrimination experiments
Creator: Sutton, Guy F
Creator: Paterson, Iain D
Creator: Compton, Stephen G
Creator: Paynter, Quentin
Subject: To be catalogued
Date Issued: 2017
Date: 2017
Type: text
Type: article
Identifier: http://hdl.handle.net/10962/417511
Identifier: vital:71459
Identifier: xlink:href="https://doi.org/10.1080/09583157.2015.1118615"
Description: We investigated host-plant utilisation by the candidate biocontrol agent Paradibolia coerulea (Coleoptera: Chrysomelidae) on the target plant Spathodea campanulata Beauv. (Bignoniaceae) and a closely related non-target plant, Kigelia africana (Lam.) Benth. (Bignoniaceae). Paired-choice and sequential no-choice experiments were performed and coupled with olfactory discrimination experiments to test the insects’ responses to volatiles from both plant species as well as to cues from conspecific beetles. Although K. africana was utilised by P. coerulea, S. campanulata was preferred for both adult feeding and oviposition. Interestingly, whereas females were attracted to olfactory cues emitted by S. campanulata, males demonstrated no such olfactory discrimination. Females were also attracted to cues deposited by males, and males were deterred by cues from other males, but neither sex responded to female olfactory cues. Very few eggs were recorded on K. africana and none of the larvae that hatched on K. africana survived the first instar. Both S. campanulata and K. africana are suitable for adult feeding, but persistent utilisation of K. africana in the field is unlikely because larval development is only possible on S. campanulata and because the adult females are strongly attracted to volatiles emitted by the target plant. Nevertheless, if P. coerulea is released as a biocontrol agent, spill-over adult feeding could potentially occur on K. africana growing sympatrically with S. campanulata. Because P. coerulea cannot complete its development on K. africana, non-target damage will only occur where the target plant is present, with an intensity dependent on densities of adult beetles locally.
Format: computer
Format: online resource
Format: application/pdf
Format: 1 online resource (13 pages)
Format: pdf
Publisher: Taylor and Francis Online
Language: English
Relation: Biocontrol Science and Technology
Relation: Sutton, G.F., Paterson, I.D., Compton, S.G. and Paynter, Q., 2017. Predicting the risk of non-target damage to a close relative of a target weed using sequential no-choice tests, paired-choice tests and olfactory discrimination experiments. Biocontrol Science and Technology, 27(3), pp.364-377
Relation: Biocontrol Science and Technology volume 27 number 3 p. 364 2017 1360-0478
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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Sutton, Guy Frederick (Dr)

RU DST/NRF SARChI for Insects in Sustainable Agricultural Ecosystems

Hill, Martin Patrick (Distinguished Professor)

Compton, Stephen G (Prof)

Paterson, Iain D (Associate Professor)

SDG 15. Life On Land

RU Department of Zoology and Entomology

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