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Titolo:
Effects of exposure to event 176 Bacillus thuringiensis corn pollen on monarch and black swallowtail caterpillars under field conditions
Autore:
Zangerl, AR; McKenna, D; Wraight, CL; Carroll, M; Ficarello, P; Warner, R; Berenbaum, MR;
Indirizzi:
Univ Illinois, Dept Entomol, Urbana, IL 61801 USA Univ Illinois Urbana ILUSA 61801 ois, Dept Entomol, Urbana, IL 61801 USA
Titolo Testata:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
fascicolo: 21, volume: 98, anno: 2001,
pagine: 11908 - 11912
SICI:
0027-8424(20011009)98:21<11908:EOETE1>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
ECOLOGY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Berenbaum, MR Univ Illinois, Dept Entomol, 320 Morrill Hall, Urbana, IL 61801 USA Univ Illinois 320 Morrill Hall Urbana IL USA 61801 61801 USA
Citazione:
A.R. Zangerl et al., "Effects of exposure to event 176 Bacillus thuringiensis corn pollen on monarch and black swallowtail caterpillars under field conditions", P NAS US, 98(21), 2001, pp. 11908-11912

Abstract

The widespread planting of corn genetically modified to produce Bacillus thuringiensis endotoxin has led to speculation that pollen from these fieldsmight adversely affect nearby nontarget lepidopterans. A previous study ofBt corn engineered with Monsanto event 810 failed to detect an effect of pollen exposure on the black swallowtail, Papilio polyxenes, in either the field or the laboratory. Here, we report results of a field study investigating the impact of exposure to pollen from a Bt corn hybrid containing Novartis event 176 on two species of Lepidoptera, black swallowtails and monarchbutterflies, Danaus plexippus. Nearly half of the 600 monarch larvae died within the first 24 h; this and subsequent mortality was not associated with proximity to St corn and may have been due in part to predation. Survivorship of black swallowtails was much higher than that of the monarchs and was also independent of proximity to the transgenic corn. However, despite five rainfall events that removed much of the pollen from the leaves of theirhost plants during the experiment, we observed a significant reduction in growth rates of black swallowtail larvae that was likely caused by pollen exposure. These results suggest that Bt corn incorporating event 176 can have adverse sublethal effects on black swallowtails in the field and underscore the importance of event selection in reducing environmental impacts of transgenic plants.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 07:23:05