Change search
ReferencesLink to record
Permanent link

Direct link
Host plant selection behaviour of Chilo partellus and its implication for effectiveness of a trap crop
Stockholm University, Faculty of Science, Department of Zoology.ORCID iD: 0000-0003-4195-8920
2011 (English)In: Entomologia Experimentalis et Applicata, ISSN 0013-8703, E-ISSN 1570-8703, Vol. 138, no 1, 40-47 p.Article in journal (Refereed) Published
Abstract [en]

Female lepidopterans can display a hierarchy of preference among potential host species, a trait thought to arise from the balance between attractants and deterrents to which the insects respond. Host plant ranking by moths and larvae of Chilo partellus Swinhoe (Lepidoptera: Crambidae), an important pest of cereals in Africa, was investigated, and whether eggs deposited on specific host plants yield larvae of particular host preferences. Trap plants are used in management of this pest. However, any 'disagreement' in host ranking between moths and larvae could potentially reduce effectiveness of trap crops as larvae emigrate to the main crop from the parent's preferred trap plant. We also investigated whether host plant preference is influenced by the diet upon which larvae fed as part of an integrated assessment of the relationship between host plant selection and learning in C. partellus. Five host plants (all Poaceae) were used: maize (Zea mays L.), sorghum (Sorghum bicolor Moench), Napier grass (Pennisetum purpureum Schumach), and two varieties of signal grass [Brachiaria brizantha (A. Rich.) Stapf], viz., local (henceforth signal grass) and improved ('Mulato'). In multiple choice tests, C. partellus female moths preferentially oviposited on Napier grass, followed by sorghum, maize, and signal grass, and least preferred 'Mulato'. Larvae however equally orientated and settled on leaf cuts of maize, sorghum, signal grass, and Napier grass, but least preferred 'Mulato'. Moreover, eggs from specific host plants did not yield larvae of particular host preferences. Furthermore, oviposition preference was not altered by the larval food. These results imply only a slight 'disagreement' in host ranking behaviour between moths and larvae, which is beneficial for trap cropping as larvae would not 'reject' the trap plant and appreciably disperse to the neighboring plants. Moreover, absence of larval learning behaviour indicates that regardless of the larval food C. partellus moths would still be attracted to the selected trap plant.

Place, publisher, year, edition, pages
2011. Vol. 138, no 1, 40-47 p.
Keyword [en]
host plant ranking, Hopkins host plant selection, trap cropping, Lepidoptera, Crambidae
National Category
Natural Sciences
URN: urn:nbn:se:su:diva-69714DOI: 10.1111/j.1570-7458.2010.01073.xISI: 000284962900005OAI: diva2:477999
authorCount :4Available from: 2012-01-15 Created: 2012-01-15 Last updated: 2014-10-28Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Nylin, Sören
By organisation
Department of Zoology
In the same journal
Entomologia Experimentalis et Applicata
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 85 hits
ReferencesLink to record
Permanent link

Direct link