Behavioral responses of adult female tobacco hornworms, Manduca sexta, to hostplant volatiles change with age and mating status.

W. L. Mechaber, C. T. Capaldo, J. G. Hildebrand

Research output: Contribution to journalArticle

Abstract

We present evidence for two behaviors influenced by intact, vegetative plant odor - upwind flight and abdomen curling - in female Manduca sexta and demonstrate the influence of the age and mating status of the moths on these behaviors. We compared the behavioral responses of laboratory-reared M. sexta. of discrete ages and physiological states (2,3, and 4 day old for virgin; 2 and 3 day old for mated) as individual moths flew upwind in a flight tunnel to a source of hostplant volatiles. We monitored odor-modulated flight and abdomen curling in the presence of volatiles released by potted hostplants. Mated 3 day old females exhibited the highest incidence of odor-modulated flight and abdomen curling. Similarly, as virgin moths aged, a greater percentage of the individuals displayed odor-modulated flight patterns and abdomen curling. In contrast, younger virgin moths exhibited high levels of abdomen curling only after contact with the plant.

Original languageEnglish (US)
Pages (from-to)5
Number of pages1
JournalJournal of Insect Science
Volume2
StatePublished - 2002

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Manduca
Manduca sexta
abdomen
Abdomen
Moths
flight
odors
moths
Psychodinae
physiological state
incidence
Odorants
Incidence

ASJC Scopus subject areas

  • Medicine(all)

Cite this

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title = "Behavioral responses of adult female tobacco hornworms, Manduca sexta, to hostplant volatiles change with age and mating status.",
abstract = "We present evidence for two behaviors influenced by intact, vegetative plant odor - upwind flight and abdomen curling - in female Manduca sexta and demonstrate the influence of the age and mating status of the moths on these behaviors. We compared the behavioral responses of laboratory-reared M. sexta. of discrete ages and physiological states (2,3, and 4 day old for virgin; 2 and 3 day old for mated) as individual moths flew upwind in a flight tunnel to a source of hostplant volatiles. We monitored odor-modulated flight and abdomen curling in the presence of volatiles released by potted hostplants. Mated 3 day old females exhibited the highest incidence of odor-modulated flight and abdomen curling. Similarly, as virgin moths aged, a greater percentage of the individuals displayed odor-modulated flight patterns and abdomen curling. In contrast, younger virgin moths exhibited high levels of abdomen curling only after contact with the plant.",
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year = "2002",
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T1 - Behavioral responses of adult female tobacco hornworms, Manduca sexta, to hostplant volatiles change with age and mating status.

AU - Mechaber, W. L.

AU - Capaldo, C. T.

AU - Hildebrand, J. G.

PY - 2002

Y1 - 2002

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AB - We present evidence for two behaviors influenced by intact, vegetative plant odor - upwind flight and abdomen curling - in female Manduca sexta and demonstrate the influence of the age and mating status of the moths on these behaviors. We compared the behavioral responses of laboratory-reared M. sexta. of discrete ages and physiological states (2,3, and 4 day old for virgin; 2 and 3 day old for mated) as individual moths flew upwind in a flight tunnel to a source of hostplant volatiles. We monitored odor-modulated flight and abdomen curling in the presence of volatiles released by potted hostplants. Mated 3 day old females exhibited the highest incidence of odor-modulated flight and abdomen curling. Similarly, as virgin moths aged, a greater percentage of the individuals displayed odor-modulated flight patterns and abdomen curling. In contrast, younger virgin moths exhibited high levels of abdomen curling only after contact with the plant.

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