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Titolo:
N-15-enrichment of plant tissue to mark phytophagous insects, associated parasitoids, and flower-visiting entomophaga
Autore:
Steffan, SA; Daane, KM; Mahr, DL;
Indirizzi:
Univ Calif Berkeley, Dept Environm Sci Policy & Management, Ctr Biol Control, Div Insect Biol, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 ct Biol, Berkeley, CA 94720 USA Univ Wisconsin, Dept Entomol, Madison, WI 53706 USA Univ Wisconsin Madison WI USA 53706 , Dept Entomol, Madison, WI 53706 USA
Titolo Testata:
ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA
fascicolo: 2, volume: 98, anno: 2001,
pagine: 173 - 180
SICI:
0013-8703(200102)98:2<173:NOPTTM>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
N-15-LABELED NITROGEN-FERTILIZER; STABLE-ISOTOPE RATIOS; RUBIDIUM; ASSIMILATION; FIELD; N-15;
Keywords:
Amyelois transitella; Cotesia plutellae; Goniozus legneri; Hippodamia convergens; N-15; stable isotope ratios; elemental enrichment; insect marking; flower-visitation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Steffan, SA Univ Calif Berkeley, Dept Environm Sci Policy & Management, Ctr Biol Control, Div Insect Biol, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 keley, CA 94720 USA
Citazione:
S.A. Steffan et al., "N-15-enrichment of plant tissue to mark phytophagous insects, associated parasitoids, and flower-visiting entomophaga", ENT EXP APP, 98(2), 2001, pp. 173-180

Abstract

New techniques are presented on the use of N-15 to mark insects. N-15, a stable isotope of nitrogen, was enriched above natural abundance in plant and insect tissues. Two laboratory studies demonstrated that enriched N-15- concentrations could be tracked from plant to insect using mass spectrometry. In the first study, adult Cotesia plutellae (Kurdjimov) (Hymenoptera: Braconidae) and Hippodamia convergens Guerin-Meneville (Coleoptera: Coccinellidae) were allowed to feed at the Rowers of rapid-cycling Chinese cabbage plants that had been fertilized with N-15-enriched potassium nitrate (KNO3-(NO3)-N-15). Both insect, groups were found to have significantly elevated N-15 levels after visiting the flowers of the N-15-enriched plants for 48 hours. In the second study, N-15-enriched bean plant. (Phaseolus vulgaris L.) tissue was incorporated into an insect diet and fed to navel orangeworms, Amyelois transitella (Walker) (Lepidoptera: Pyralidae). When the navel orangeworm larvae were 4th instars, they were removed from the diet and exposed to the parasitoid, Goniozus legneri Gordh (Hymenoptera: Bethylidae). Results indicated that the enriched N-15-concentration of the bean plants was transferred to the navel orangeworms and, subsequently, to the parasitoids. This work may provide useful techniques to help establish whether agriculturally important entomophaga visiting N-15-enriched flowers or parasitizing enriched sentinel larvae in the field can be effectively marked with N-15.

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Documento generato il 13/07/20 alle ore 16:33:59