Behavioral responses of the whitebacked planthopper Sogatella furcifera (Homoptera: Delphacidae) on rice plants whose odors have been masked

In a two-choice test, more S. furcifera females settled more often on exposed plants than on parafilm-masked ones, regardless of the susceptibility of rice varieties. This indicates that rice volatiles play an important role in the insect's short-range orientation to its host. The fact that mor...

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Bibliographic Details
Published in:Journal of insect behavior 1994-05, Vol.7 (3), p.343-353
Main Authors: Liu, G, Saxena, R.C, Wilkins, R.M
Format: Article
Language:English
Subjects:
Animal ethology
Biological and medical sciences
COMPORTEMENT ALIMENTAIRE
Delphacidae
FEEDING HABITS
Fundamental and applied biological sciences. Psychology
HABITOS ALIMENTARIOS
Homoptera
INSECT PESTS
INSECTE NUISIBLE
INSECTOS DANINOS
Invertebrates
OLFACCION
OLFACTION
OLFACTORY STIMULATION
ORIENTACION
ORIENTATION
ORYZA SATIVA
PEST INSECTS
Protozoa. Invertebrata
Psychology. Psychoanalysis. Psychiatry
SOGATELLA FURCIFERA
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Summary:In a two-choice test, more S. furcifera females settled more often on exposed plants than on parafilm-masked ones, regardless of the susceptibility of rice varieties. This indicates that rice volatiles play an important role in the insect's short-range orientation to its host. The fact that more insects settled on exposed resistant Rathu Heenati (RHT) than to masked susceptible Taichung Native 1 (TN1) suggests that there must be certain common volatiles released by both varieties. Few females landed on masked plants of either RHT or TN1. This implies that the insect could not recognize at a distance that a plant was resistant or susceptible without olfactory stimuli. S. furcifera excreted less honeydew on masked plants than on exposed ones for both varieties and more on masked TN1 than on exposed RHT. The electronic monitoring of feeding behavior demonstrates that the insect made more frequent probes and had shorter phloem ingestion durations on exposed RHT than on exposed TN1 and on masked RHT than on masked TN1. Moreover, the insect had longer phloem ingestion durations on masked TN1 than on exposed RHT. These results suggest that volatile chemicals given off by resistant RHT plants have a negative effect on feeding.
ISSN:0892-7553
1572-8889
DOI:10.1007/BF01989740