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Digitale Medien

The role of phytoecdysteroids in bracken fern,Pteridium aquilinum (L.) Kuhn as a defense against phytophagous insect attack (1978)

Jones, C. G. ; Firn, R. D.

Springer

Journal of chemical ecology 4 (1978), S. 117-138

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Details

ISSN: 1573-1561

Schlagwort(e): Bracken fern ; Pteridium aquilinum ; phytoecdysteroids ; insect feeding deterrents

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: Abstract Analysis of green bracken fronds collected during July, August, and October, 1975, for phytoecdysteroids showed that these compounds occur in only trace amounts (0.25–0.53 μg/kg fresh weight [FW]). The effect of ecdysteroids on the feeding behavior of seven species of insect showed that four species were deterred at ecdysteroid concentrations at or above 60 mg/kg FW diet; one species of insect at 6 mg/kg or above, and two species which were not affected at the higher concentrations. It was concluded that the levels of phytoecdysteroids in bracken would not deter insects from feeding on the plant. The previously published data relevant to the possible role of phytoecdysteroids as defense compounds are also discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00988049

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