Host location behaviour in the desert caterpillar, Heliothis punctifera

Cunningham, John Paul, Lange, Corinna L., Walter, Gimme H., & Zalucki, Myron P. (2011) Host location behaviour in the desert caterpillar, Heliothis punctifera. Entomologia Experimentalis Et Applicata, 141(1), pp. 1-7.

View at publisher

Abstract

The host location behaviour of foraging caterpillars has received little attention, despite the wealth of theoretical and empirical studies that have been directed at this behavioural trait in adult Lepidoptera. Here, we study caterpillars of the moth Heliothis punctifera Walker (Lepidoptera: Noctuidae), which inhabits the arid inland desert areas of Australia. Caterpillars of this species consume many flowerheads before completing development and can be observed moving across the sand in search of new hosts. Consequently, if host location behaviour favours attraction to certain plant species, it might be expected to influence the distribution and abundance of caterpillars in the field. We present field data showing that H. punctifera caterpillars are unevenly distributed throughout mixed patches of two of its host species, with a higher abundance on Senecio gregorii F. Muell., the annual yellow top, compared to Myriocephalus stuartii (F. Muell. & Sond.) Benth., the poached egg daisy (both Asteraceae). Using laboratory studies, we test whether this distribution may, in part, be due to host location behaviour of caterpillars. Our results show that caterpillars exhibit a preference for locating S. gregorii in their pre- and post-contact foraging behaviour. In addition, our results provide evidence that feeding history plays a role in host location behaviour in this insect. We propose that key features of the desert environment and the ecology of H. punctifera would favour adaptations to host location behaviour by immatures.

Impact and interest:

7 citations in Scopus
Search Google Scholar™
6 citations in Web of Science®

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

ID Code: 60995
Item Type: Journal Article
Refereed: Yes
Additional Information: Times Cited: 0
Keywords: Lepidoptera, Noctuidae, larval, host-plant selection, preference, Senecio gregorii, Myriocephalus
DOI: 10.1111/j.1570-7458.2011.01163.x
ISSN: 0013-8703
Subjects: Australian and New Zealand Standard Research Classification > BIOLOGICAL SCIENCES (060000) > ECOLOGY (060200) > Behavioural Ecology (060201)
Divisions: Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 04 Jul 2013 00:24
Last Modified: 10 Jul 2013 03:10

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page