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Titolo:
IMPACT OF FLORAL HERBIVORY BY PARSNIP WEBWORM (OECOPHORIDAE, DEPRESSARIA-PASTINACELLA DUPONCHEL) ON POLLINATION AND FITNESS OF WILD PARSNIP(APIACEAE, PASTINACA-SATIVA L)
Autore:
LOHMAN DJ; ZANGERL AR; BERENBAUM MR;
Indirizzi:
UNIV ILLINOIS,DEPT ENTOMOL URBANA IL 61801 UNIV ILLINOIS,DEPT ENTOMOL URBANA IL 61801 BRADLEY UNIV,DEPT BIOL PEORIA IL 61625
Titolo Testata:
The American midland naturalist
fascicolo: 2, volume: 136, anno: 1996,
pagine: 407 - 412
SICI:
0003-0031(1996)136:2<407:IOFHBP>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLOWERS; DEFENSE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
D.J. Lohman et al., "IMPACT OF FLORAL HERBIVORY BY PARSNIP WEBWORM (OECOPHORIDAE, DEPRESSARIA-PASTINACELLA DUPONCHEL) ON POLLINATION AND FITNESS OF WILD PARSNIP(APIACEAE, PASTINACA-SATIVA L)", The American midland naturalist, 136(2), 1996, pp. 407-412

Abstract

Herbivory by the parsnip webworm, Depressaria pastinacella (Lepidoptera: Oecophoridae), on the flowers of wild parsnip, Pastinaca sativa (Apiaceae), has been shown to decrease the plant's reproductive success. This pilot study provides evidence that this reduction in fitness extends beyond physical removal of reproductive structures. Umbels infested with a single webworm were visited by potential pollinators less frequently and produced fewer (but heavier) seeds than uninfested umbels. While much of the reduction in seed production can be attributed to consumption of flowers by webworms, this study suggests that reduced rates of pollination also contribute to reduced seed set. Reduced pollination may result from decreased rates of pollinator visitation due toalteration of chemical orientation cues used by pollinators and by decreased pollinator access to flowers due to the presence of silken webbing.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 12:37:05