Biology and host preference of Selitrichodes neseri : a potential biological control agent of the Eucalyptus gall wasp, Leptocybe invasa

Show simple item record Dittrich-Schroder, Gudrun Harney, Marlene Neser, S. (Stefanus), 1942- Joffe, Tanya Bush, Samantha J. Hurley, Brett Phillip Wingfield, Michael J. Slippers, Bernard 2014-11-18T07:21:56Z 2014-11-18T07:21:56Z 2014-11
dc.description.abstract Selitrichodes neseri (Hymenoptera: Eulophidae) is a parasitoid of the invasive gall-forming wasp Leptocybe invasa (Hymenoptera: Eulophidae), which has caused serious damage to Eucalyptus plantations in many parts of the world. S. neseri is a recently discovered parasitoid considered to be a potentially important biological control agent of L. invasa. The aim of this study was to provide the first basic data on the biology of S. neseri, which is essential for its application in biological control. S. neseri was shown to be a biparental ectoparasitoid. Observation from dissected galls indicated that the parasitoid developed on late larvae, pupae and callow adults, although development did occur in a range of gall ages. Observed nominal parasitism in captivity ranged from 9.7% to 71.8%. Adult S. neseri specimens, fed with honey-water and galled Eucalyptus leaves, survived an average of 26 days at 26 C. The average developmental time from oviposition to emergence was 19.3 days ± 0.2 days. There was no pre-oviposition period. A single female produced a maximum of thirty-nine offspring, with a maximum of ten per day. Dissection of the ovaries showed that twelve ovarioles were present. The sex ratio of S. neseri observed in this study was 1:3.43 males:females. Galls of native insects most closely related to L. invasa and to galls of similar morphology to L. invasa-induced galls, were not suitable for S. neseri oviposition. S. neseri showed considerable potential as a biological control agent of L. invasa due to its relatively short developmental time, long adult life span when supplemented with carbohydrates, ability to utilize a range of gall ages and the fact that it has a high level of host specificity. en_US
dc.description.librarian hj2014 en_US
dc.description.sponsorship The Tree Protection Co-operative Programme (TPCP), the National Research Foundation (NRF), the Technology and Human Resources for Industry Programme (THRIP), the Department of Science and Technology (DST). en_US
dc.description.uri en_US
dc.identifier.citation Dittrich-Schroder, G, Harney, M, Neser, S, Joffe, T, Bush, S, Hurley, B, Wingfield, MJ & Slippers, B 2014, 'Biology and host preference of Selitrichodes neseri : a potential biological control agent of the Eucalyptus gall wasp, Leptocybe invasa', Biological Control, vol. 78, pp. 33-41. en_US
dc.identifier.issn 1049-9644 (print)
dc.identifier.issn 1090-2112 (online)
dc.identifier.other 10.1016/j.biocontrol.2014.07.004
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.rights © 2014 Elsevier Inc. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Biological Control. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Biological Control, vol. 78, pp. 33-41. 2014. doi : 10.1016/j.biocontrol.2014.07.004. en_US
dc.subject Host specificity en_US
dc.subject Adult longevity en_US
dc.subject Ectoparasitoid en_US
dc.subject Parasitism rate en_US
dc.subject Developmental time en_US
dc.subject Eucalyptus en_US
dc.subject Galls en_US
dc.title Biology and host preference of Selitrichodes neseri : a potential biological control agent of the Eucalyptus gall wasp, Leptocybe invasa en_US
dc.type Postprint Article en_US

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