Contrasting Behavioral and Electrophysiological Responses of Eucryptorrhynchus scrobiculatus and E. brandti (Coleoptera: Curculionidae) to Volatiles Emitted from the Tree of Heaven, Ailanthus altissima
Open Access
- 14 January 2021
- Vol. 12 (1), 68
- https://doi.org/10.3390/insects12010068
Abstract
Eucryptorrhynchus scrobiculatus and E. brandti (Coleoptera: Curculionidae) are host-specific pests of Ailanthus altissima (Mill.) Swingle (Sapindales: Simaroubaceae), causing extensive damage to the host. There are no effective attractants available for pest management. The main aim of this study was to explore the role of host plant-derived volatiles in the behavioral response of both weevil species. In a field experiment, both weevil species showed positive response to phloem, and there was no preference for phloem associated with healthy or injured trees. Significantly more E. brandti adults responded to the olfactory treatments compared to E. scrobiculatus. In a large-arena experiment, both males and females of E. scrobiculatus significantly preferred phloem from the tree trunk while adults of E. brandti responded in significantly greater numbers to tree limbs than to any other parts of host. Females and males of E. scrobiculatus responded positively to all parts of host tested in the Y-tube bioassay, while E. brandti adults were only attracted by the phloem from healthy and injured trees. There were dissimilar electroantennographic responses to compounds such as 1-hexanol and (1S)-(−)-β-pinene between the two weevil species. This study represents the first report documenting behavioral and electrophysiological responses of E. scrobiculatus and E. brandti to volatiles from various parts of A. altissima and findings may aid efforts to develop attractants.Keywords
This publication has 22 references indexed in Scilit:
- Host-Range Testing of Eucryptorrhynchus brandti (Coleoptera: Curculionidae), a Candidate for Biological Control of Tree-of-heaven, Ailanthus altissimaEnvironmental Entomology, 2012
- Perception of plant volatile blends by herbivorous insects – Finding the right mixPhytochemistry, 2011
- Characterization and Coding of Behaviorally Significant Odor MixturesCurrent Biology, 2009
- Synergism between aromatic compounds and green leaf volatiles derived from the host plant underlies female attraction in the oriental fruit mothEntomologia Experimentalis et Applicata, 2007
- Insect host location: a volatile situationTrends in Plant Science, 2005
- Echolocation signals reflect niche differentiation in five sympatric congeneric bat speciesNature, 2004
- Host acceptance behaviour of Colorado potato beetle larvae influenced by potato glandular trichomesPhysiological Entomology, 1988
- FEEDING AND BORING BEHAVIOR OF THE BARK BEETLEIPS PARACONFUSUS(COLEOPTERA: SCOLYTIDAE) ON THE BARK OF A HOST AND NON-HOST TREE SPECIESThe Canadian Entomologist, 1980
- The Competitive Exclusion PrincipleScience, 1960