Do Plants "Psychomanipulate" Insects?

Murdock, Larry L.; Brookhart, Gary L.; Edgecomb, Robert S.; Long, Thomas F.; Sudlow, Leland C.

doi:10.1021/bk-1985-0276.ch024

Cited by 7 publications

(2 citation statements)

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“…walking off by mites, irritancy in cabbage loopers, and decreased activity in aphids) and reproductive behavior (e.g. calling and mate-finding), and many affect host-finding (80,116). All of these behaviors will affect subsequent exposure to insecticide, and thus affect survival and fitness; however, they generally are less effective in this respect than are behaviors elicited by olfactory stimuli (83).…”

Section: Behavioral Responses Resulting From Sublethal Toxic Effectsmentioning

confidence: 99%

“…Other forms of learning, such as induction (152) and habituation (158), can lead to acquisition of larger toxin doses in subsequent encounters, although the concentration experienced initially could determine whether the insect leaves a plant. Some plant toxins may reduce learning in herbivores, as one way of reducing herbivore damage, through sublethal effects on the central nervous system (116).…”

Section: Behavioral Responses Resulting From Sublethal Toxic Effectsmentioning

confidence: 99%

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Spatial Heterogeneity and Insect Adaptation to Toxins

Hoy

Head

Hall

1998

Annu. Rev. Entomol.

119

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Behavioral responses of insect herbivores to toxins are examined in managed and natural systems with reference to two important but largely ignored factors: heterogeneity in toxin distributions and the nature of the relationship between behavioral responses and physiological adaptation to the same toxins. Heterogeneous toxin distributions, which provide the opportunity for behavioral responses, are ubiquitous in managed and natural systems. Insect herbivores have evolved a wide variety of behavioral responses to such toxins. The nature of behavioral responses reflects toxin apparency, mode of action, and the extent to which sublethal effects influence behavior. The interaction between these behavioral responses to heterogeneously distributed toxins and physiological mechanisms of tolerance has influenced the evolution of insecticide resistance in managed systems and the evolution of plant defensive strategies in natural systems. An understanding of this interaction could lead to more evolutionarily stable methods of crop protection.

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Section: Behavioral Responses Resulting From Sublethal Toxic Effectsmentioning

confidence: 99%

Section: Behavioral Responses Resulting From Sublethal Toxic Effectsmentioning

confidence: 99%

Spatial Heterogeneity and Insect Adaptation to Toxins

Hoy

Head

Hall

1998

Annu. Rev. Entomol.

119

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Effects of some β‐carbolines on the concentrations of 5‐hydroxytryptamine, dopamine, and some related metabolites in the cerebral ganglia of the cockroach (Periplaneta americana)

Sloley

1988

J. Exp. Zool.

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The effects of the p-carbolines, harmaline, harmalol, harmane, and harmine on 5-hydroxytryptamine, dopamine, and tryptophan concentrations in the cerebral ganglion of the cockroach (Periplanela americana) were investigated. Injections of harmaline and harmine-induced decreases in the concentrations of 5-hydroxytryptamine and dopamine. The 5-hydroxytryptamine depletion was greater than the dopamine depletion. Injections of harmalol had no effect. Tryptophan concentrations were variable, although significant decreases were observed in harmaline-treated animals. N-acetyl 5-hydroxytryptamine, 5-hydroxyindoleacetic acid, and 5-hydroxytryptophan remained below the level of detection in all tissues examined, indicating that these compounds do not accumulate within the central nervous system as a result of the various treatments. A number of alkaloids are believed to render plants resistant to predation by insects (Waller and Nowacki, '78; Murdock et al., '85). It is therefore conceivable that some plants have evolved the capacity to produce carbolines in order to defend themselves against insect and, possibly, vertebrate predation by interfering with aminergic components in the central nervous system. As insects appear to utilize Nacetyltransferase rather than monoamine oxidase in the metabolism of aminergic neurotransmitters (Evans and Fox, '75a,b; Sloley and Downer, ,841, the effects of carbolines reported to act through inhibition of both vertebrate monoamine oxidase and N -

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10.1007/BF00164944

2011

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Do Plants "Psychomanipulate" Insects?

Cited by 7 publications

References 0 publications

Spatial Heterogeneity and Insect Adaptation to Toxins

Spatial Heterogeneity and Insect Adaptation to Toxins

Effects of some β‐carbolines on the concentrations of 5‐hydroxytryptamine, dopamine, and some related metabolites in the cerebral ganglia of the cockroach (Periplaneta americana)

10.1007/BF00164944

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